Compact Eight-Band Frequency Reconfigurable Antenna for LTE/WWAN Tablet Computer Applications
|
|
- Amy Potter
- 6 years ago
- Views:
Transcription
1 IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 62, NO. 1, JANUARY Compact Eight-Band Frequency Reconfigurable Antenna for LTE/WWAN Tablet Computer Applications Yong-Ling Ban, Si-Cheng Sun, Peng-Peng Li, Joshua Le-Wei Li, and Kai Kang Abstract A novel eight-band LTE/WWAN frequency reconfigurable antenna for tablet computer applications is proposed in this communication. With a small dimension of , the proposed antenna comprises a loop feeding strip and a shorting strip in which a single-pole fourthrow RF switch is embedded. The RF switch is used to change the resonant modes of lower band among four different working states, so that the antenna can provide a multiband operation of LTE700/GSM850 /900/1800/ 1900/UMTS2100/LTE2300/2500 with return loss better than 6 db. Reasonably good radiating efficiency and antenna gain are also achieved for the practical tablet computer. Index Terms Eight-band antenna, frequency reconfigurable antenna, LTE/WWAN antenna, small antenna, tablet computer antenna. I. INTRODUCTION With the rapid development of wireless communication systems, there is a significant interest in providing more small size and multiband antennas in mobile devices. However, designing an internal compact antenna for multiple bands of LTE/WWAN services in small handsets is still a serious challenge, especially for the tablet computer. For common mobile communication applications, there are some wideband techniques to achieve multiband operating bands. For instance, an internal eight-band antenna with coupled-fed structure for tablet computer applications in [1] is demonstrated. Then a folded monopole/dipole/loop antenna in [2] with four resonances can also cover six operating bands. A novel tablet antenna in [3] applies a band-stop matching circuit structure to realize the multiband coverage. In addition, there are also some other wideband techniques, such as loading the parallel resonant structure in the antennas in [4], and using multi-branch structure in [5] and so on. However, these conventional wideband designs [1] [8] usually cover all the bands of interest at once, and the antenna will occupy a larger size and the design is also difficult. Hence, some other techniques need to be investigated to design compact wideband antennas for the internal antenna applications. Given the very limited volume allocated for the antennas in a mobile terminal, the frequency reconfigurable technique [9] [12] seems an attractive option. In this way a good antenna operation can be reached at several cellular frequency bands while having reasonably small antenna volume. The Manuscript received April 19, 2013; revised September 03, 2013; accepted October 07, Date of publication October 28, 2013; date of current version December 31, This work was supported by the National Higher-education Institution General Research and Development Project (No. ZYGX2013J013) and the National Natural Science Foundation of China (No ). Y.-L. Ban, P.-P. Li, and K. Kang are with Institute of Electromagnetics and School of Electronic Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu , China ( byl@uestc.edu. cn). J. L.-W. Li is with the Institute of Electromagnetics and School of Electronic Engineering, University of Electronic Science and Technology of China (UESTC),Chengdu611731,Chinaandalso with the Advanced Engineering Platform and School of Engineering, Monash University, Selangor 46150, Malaysia and also with the Department of Electrical and Computer Systems Engineering, Monash University, Victoria 3800, Australia. Color versions of one or more of the figures in this communication are available online at Digital Object Identifier /TAP Fig. 1. (a) Geometry of the proposed basic antenna for tablet computer applications. (b) Detailed dimensions of the basic antenna and the structure of the RF switch. (units: mm). reconfigurable technique for tablet applications can also reducing the dependence on chassis modes. In the tablet computer, the system ground plane is much larger than that of the mobile handset, and it generally cannot support the chassis mode as in the mobile handset to aid in enhancing the operating bandwidth of the antenna [3], [7], [8]. This is the biggest difference between the design of mobile phone antenna and tablet computer antenna. However, in the reconfigurable technique for tablet applications, the ground plane does not play the decisive role in designing the bandwidth of lower band such as GSM850/900 or LTE700. At present, some frequency reconfigurable terminal antennas are published, but most of them are for mobile phone applications [11], [12], and few for tablet applications. In this communication, a novel compact frequency reconfigurable antenna with a single-pole four-throw RF switch is proposed for the tablet computer. The RF switch has four states and controls four lumped inductances of different values. The obtained results show that the designed antenna can cover the entire LTE/WWAN bands when combining the four matching states with return loss better than 6 db. The bandwidth is almost free from the impact of the ground plane size, so one designed antenna can be reused in some other tablet computers. The gain and radiation patterns are also measured, and the obtained results are presented in the following sections. II. PROPOSED ANTENNA DESIGN Fig. 1(a) shows a proposed basic antenna structure. In this study, the tablet computer with a (9.7-inch) display is considered. The designed antenna is printed on a 0.8 mm thick FR4 substrate (relative permittivity 4.4 and loss tangent 0.02) of size There is a shielding wall on the ground plane and the shielding wall X 2013 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.
2 472 IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 62, NO. 1, JANUARY 2014 TABLE I THE TRUTH THE RF SWITCH is perpendicular to the ground plane. The antenna is perpendicularly fixed on the shielding wall with a distance of 5 mm from the left edge. The shielding wall of size at the top edge of the display ground can be used to accommodate the embedded antennas and may also provide some isolation between the antennas and the display, but it usually results in some degrading effects on the impedance matching of the internal antenna. By including the shielding wall, the proposed antenna can still cover the desired eight-band LTE/WWAN operation. The detailed dimensions of the metal pattern of the basic antenna and the structure of the RF switch are given in Fig. 1(b). Seen from the figure, the antenna comprises a shorting strip and a loop feeding strip. The shorting strip consists of two radiating strips of different lengths: strip 1 directly short-circuited to the shielding metal wall through the ground behind the RF switch and strip 2 grounded through the integrated RF switch. The two strips are capacitively excited by the loop feeding strip which has a loop structure formed at its front section. Moreover, it can be seen that the RF switch is placed within the dotted line in Fig. 1(b), and the GND pins of the switch are connected with the ground on the back via holes. The four lumped inductors are controlled by the bias voltages on the four ports (V1, V2, V3, V4), and in one state of the RF switch, there is only one lumped inductance used and the other three lumped inductances don t work. Taking RF3 as the example, when the two AA batteries supply a high bias voltage to RF3 and then other three ports (RF1, RF2 and RF4) are in the low level, then the RF3 turns ON and other three ports turns OFF. The truth table of the RF switch can be seen in Table I. In the proposed antenna, the loop feeding strip not only serves as a capacitive feed to couple the energy to the shorting strip, but also functions as an effective radiator to contribute a resonant mode at 2450 MHz for the antenna. This characteristic in functioning as a feed and a radiator is an advantage for the proposed antenna to form a wide bandwidth. Besides, strip 1 of the shorting strip is a T-shape structure and can generate a resonant mode at about 1750 MHz. Then, combining the two modes contributed by the loop feeding strip and strip 1 of the shorting strip, a wide upper band covering MHz for the antenna is achieved. Specifically, a four-state RF switch is used to adjust the impedance matching of strip 2 to produce resonant modes at different frequencies in the lower band. In the proposed procedure, the goal of a reconfigurable matching is to match different portions of the input impedance curve in the antenna s lower band, which can realize different frequency bands coverage. This might sound simple, but in practice the matching must be carefully designed to achieve the desired performance. Fortunately, the single-pole four-throw RF switch can control four inductances via ON and OFF states to realize the frequency reconfigurability and form a wide lower band of MHz for the antenna. The simulated surface current distributions for the proposed antenna are shown in Fig. 2 at 900, 1750 and 2450 MHz. In order to show it more clearly, only one state (the state is ON) is chosen. It is obviously observed from Fig. 2(a), at 900 MHz strong surface current distributions on strip 2 of the shorting strip, which confirm that the proposed antenna s lower resonant mode at about 900 MHz is mainly contributed by strip 2. Also the surface current distributions are same for the other three resonant modes of lower band corresponding to the other three states. In Fig. 2(b), it is seen that strong current distributions Fig. 2. Simulated current distributions on the radiators and system ground of the tablet antenna at (a) 900 MHz, (b) 1750 MHz, and (c) 2450 MHz. Fig. 3. Photo of the manufactured antenna for tablet computer applications. flow along with strip 1 of the shorting strip, which proves strip1 can provide a resonant path for the resonant mode at around 1750 MHz. Moreover, from Fig. 2(c), it can be seen that there are relatively strong current distributions on the loop feeding strip, which suggests that the resonant modes at 2450 MHz is provided by the loop feeding strip. All of the simulated surface current distributions in the resonant modes comply with the structure studied before very well. The photograph of the manufactured eight-band frequency reconfigurable tablet computer antenna is displayed in Fig. 3. The control voltage for the switch is supplied by two AA batteries. In the experiment, a 50 mini coaxial line is used to feed the antenna as in the practical tablet computer applications. The center conductor of the coaxial line is connected to point A which is at the loop feeding strip and the outer grounding sheath is welded on point B which is at the shielding wall, as shown in Fig. 1. The other end of the coaxial line has a SMA connector, which is used to connect to the test instrument. When the antenna is under test, the coaxial line is placed parallel to the ground plane. III. RESULTS AND DISCUSSION The proposed antenna was fabricated and tested. Results of the measured and simulated return loss for the fabricated antenna are shown in Fig. 4(a) and (b), respectively. The simulated results are obtained using full-wave electromagnetic field simulation software HFSS version 12.0 and the experimental results obtained on an Agilent N5247A vector network analyzer. As seen in the two figures, the upper band from 1700 to 2705 MHz can cover the desired GSM1800/1900/UMTS2100/ LTE2300/2500 bands. The lower band of the reconfigurable antenna including five frequencies from 690 to 980 MHz can cover the whole required LTE700/GSM850/900 bands with impedance matching better than 6 db return loss (3:1 VSWR). Notice that the 3:1 VSWR bandwidth definition is widely used in the internal mobile device antenna for LTE/WWAN operation [1] [4], [7] [13]. It can be seen when changing
3 IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 62, NO. 1, JANUARY Fig. 4. Measured and simulated return loss for the proposed antenna against the operating frequency. the states of the switch, only the lower band is affected. That is because the resonant modes of the lower band are generated by the strip 2 where the RF switch is embedded and the resonant modes of the upper band are mainly contributed by the strip 1 and the loop feeding strip. When changing the states of the switch, the impedance of the strip 1 and the loop feeding strip changes little and the upper band is almost no effect. Several main design parameters of the presented antenna are studied and discussed in the following sections. To analyze the operating principle of the proposed antenna, some comparisons are provided. Fig. 5(a) shows the simulated return loss for the case with the loop feeding strip only (Ref1), and the case with the loop feeding strip and strip 1 of the shorting strip only (Ref2). For the Ref1 case, there is only one resonant mode at about 2700 MHz (although the impedance matching is not good), which coincides with the condition of a resonance (zero reactance) occurred in the upper band in Fig. 5(b). Fig. 5(b) shows the input impedance of Ref 1 and Ref 2. Then when strip 1 is added to form Ref2, an additional resonant mode is generated, and then a wide upper band consisting of two resonant modes is achieved to cover the GSM1800/1900/UMTS2100/LTE2300/2500 band. By further embedding strip 2 of the shorting strip and the RF switch to form the proposed antenna, a wide lower band for the antenna can be generated covering the desired LTE700/GSM850/900. Detailed, the RF switch is placed between the shielding wall and the root of strip 2. The single-pole four-throw RF switch has four states and can control the ON and OFF states of four inductances. The inductance values of L1, L2, L3 and L4 are 2.7 nh, 4.7 nh, 8.2 nh and 12 nh. By selecting one of the inductances mentioned above, the proposed antenna can cover any frequency band between 698 MHz and 960 MHz, and the upper band of the antenna almost has no effect. To analyze the operating principle of the RF switch, the corresponding input impedance results of the lower band with different inductance on the Smith chart are shown in Fig. 5(c). Results indicate that the embedded inductance has strong effects on the impedance matching over the lower band. It can be seen from the Smith chart, the series inductor values are increasing from L1 to L4. As we know from matching principle on the Smith chart, when the series inductance becomes larger, the combination impedance of Fig. 5. (a) Simulated return loss for the proposed antenna and reference antenna, (b) comparison of the simulated input impedance for the proposed antenna and reference antenna, (c) the corresponding input impedance results of the lower band with different inductance on the Smith chart. the antenna and the series inductor will move up along the constant resistance circles, just as the change of the impedance curves shown in Fig. 5(c). Hence, different switch states can make different frequency bands of the lower band inside the 3:1 VSWR circle and then different bandwidth coverage can be achieved. So by properly selecting the values of the inductances, the whole operating band of the lower band can be achieved. Fig. 6 shows the simulated return loss as a function of the width and the length of the ground plane; where other dimensions are the same as given in Fig. 1. Considering the actual size of the tablet computer, the discussed sizes here are reasonable. Also, in order to express it more clearly, only the state is chosen and the results of other states are similar. It is clearly seen from the two figures that changing the width and length of the ground plane has little influence on the coverage of the antenna s bandwidth. This behavior once again proved that the frequency reconfigurable technique is not serious reliant on the ground plane. In this study, the tablet computer with a
4 474 IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 62, NO. 1, JANUARY 2014 Fig. 6. Simulated return loss as a function of (a) the width of the ground plane and (b) the length of the ground plane (other dimensions are the same asgiveninfig.1). Fig. 8. Measured and simulated antenna gain and measured radiation efficiency versus frequency: (a) The lower operating bands of LTE700/GSM850/900. (b) The upper operating bands of GSM1800/1900/ UMTS2100/LTE2300/2500. Fig. 7. Measured and simulated 2-D radiation patterns for the proposed antenna: at (a) 830 MHz, (b) 1750 MHz, and (c) 2450 MHz (,,,and ). display is considered, which is currently commercially available size for tablet computer. The measured and simulated radiation patterns at 830 MHz, 1750 MHz and 2450 MHz are plotted in Fig MHz is the center frequency of the lower band, which is representative. Smooth variations in the vertical polarization over all of the angles are seen in the azimuthal plane ( -plane) at the three frequency points. In addition, comparable and components are observed in the radiation patterns, which is advantageous since the position of the tablet computer is usually complex for practical applications. It can be seen that the experimental data exhibit an excellent agreement with the simulation results. Some discrepancies were found too, largely due to the manufacture tolerance and the effects of coaxial cables as well as the switch and the accuracy of the software. Fig. 8 shows the measured and simulated antenna gain and measured radiation efficiency of the designed antenna. As the simulated efficiency calculated by the HFSS V12.0 is not exact, so only the simulated gain is added in Fig. 8. For the lower band shown in Fig. 8(a), by combing the curves of four modes, the improvements of efficiency and gain are clearly observed. For the LTE700 band, the efficiency is greater than 50% and the gain is greater than 1.4 dbi; for the GSM850 band, the efficiency is greater than 58% and the gain is greater than 1.4 dbi; for the GSM900 band, the efficiency is greater than 57% and the gain is greater than 1.4 dbi. The gain and efficiency of the lower bands when connecting RF1, RF2, RF3 and RF4 have been marked with dotted lines respectively in Fig. 8(a). In Fig. 8(b), results for the upper band are presented. As the gain and efficiency of the upper band in the four states are almost the same, so only the results under one state are given. Larger variations of the antenna gain in the range of about dbi are seen for the desired GSM1800/1900/UMTS2100/LTE2300/2500 operation, and the measured radiation efficiency varies from about 50% to 77%. The results are all acceptable for the tablet computer applications. IV. CONCLUSIONS In this communication, a compact frequency reconfigurable coupled-fed antenna for tablet computer applications is proposed. By combining four states of the single-pole four-throw RF switch, eight-band including LTE700/GSM850 /900 and GSM1800/1900/UMTS2100/LTE2300/2500 can be covered with
5 IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 62, NO. 1, JANUARY an antenna volume of , which is much smaller than previous internal antenna designs. A prototype of the proposed antenna is being designed and tested. Good results of efficiency and gain illustrate the potential use of the proposed antenna for tablet computer applications. REFERENCES [1] Y.L.Ban,S.C.Sun,J.L.W.Li,andW.Hu, Compactcoupled-fed wideband antenna for internal eight-band LTE/WWAN tablet computer applications, J. Electromagn. Waves Applicat., vol. 26, pp , [2] M. Zheng, H. Y. Wang, and Y. Hao, Internal hexa-band folded monopole/dipole/loop antenna with four resonances for mobile device, IEEE Trans. Antennas Propag., vol. 60, no. 6, pp , Jun [3] K. L. Wong and P. J. Ma, Small-size WWAN monopole slot antenna with dual-band band-stop matching circuit for tablet computer application, Microw. Opt. Technol. Lett., vol. 54, pp , [4] Z. Chen, Y. L. Ban, S. C. Sun, and L. W. Li Joshua, Printed antenna for penta-band WWAN tablet computer application using embedded parallel resonant structure, Progr. Electromagn. Res., vol. 136, pp , [5] C.L.Hu,D.L.Huang,H.L.Kuo,C.F.Yang,C.L.Liao,andS.T. Lin, Compact multibranch inverted-f antenna to be embedded in a laptop computer for LTE/WWAN/IMT-E applications, IEEE Antenna Wireless Propag. Lett., vol. 9, pp , [6] L. Pazin and Y. Leviatan, Inverted-F laptop antenna with enhanced bandwidth for Wi-Fi/WiMAX applications, IEEE Trans. Antennas Propag., vol. 59, no. 3, pp , Mar [7] K. L. Wong, Y. W. Chang, and S. C. Chen, Bandwidth enhancement of small-size planar tablet computer antenna using a parallel-resonant spiral slit, IEEE Trans. Antennas Propag., vol. 60, no. 4, pp , Apr [8] K. L. Wong, T. J. Wu, and P. W. Lin, Small-size uniplanar WWAN tablet computer antenna using a parallel-resonant strip for bandwidth enhancement, IEEE Trans. Antennas Propag., vol.61,no.1,pp , Jan [9] Y. F. Yu, J. Xiong, H. Li, and S. L. He, An electrically small frequency reconfigurable antenna with a wide tuning range, IEEE Antenna Wireless Propag. Lett., vol. 10, pp , [10] H. Li, J. Xiong, Y. F. Yu, and S. He, A simple compact reconfigurable slot antenna with a very wide tuning range, IEEE Trans. Antennas Propag., vol. 58, no. 11, pp , Nov [11] Y.Li,Z.J.Zhang,J.F.Zheng,Z.H.Feng,andM.F.Iskander, A compact hepta-band loop-inverted F reconfigurable antenna for mobile phone, IEEE Trans. Antennas Propag., vol. 60, no. 1, pp , Jan [12] Y. Li et al., Compact heptaband reconfigurable loop antenna for mobile handset, IEEE Antenna Wireless Propag. Lett., vol. 10, pp , [13] Y. L. Ban, J. H. Chen, L. J. Ying, L. W. Li Joshua, and Y. J. Wu, Ultrawideband antenna for LTE/GSM/UMTS wireless USB dongle applications, IEEE Antennas Wirel. Propag. Lett., vol. 11, pp , Theoretical Limitations for TM Surface Wave Attenuation by Lossy Coatings on Conducting Surfaces Sanghoon Kim and Daniel F. Sievenpiper Abstract In this work, we theoretically analyze the limitations for TM surface wave attenuation on lossy coated conducting surfaces containing electric and/or magnetic loss. We use both an analytical approach as well as numerical simulations, and find excellent agreement between them. We also find that the loss can be described by a simple approximate expression for a wide range of material properties. Furthermore, we analyze lossy slabs with simple equivalent circuit boundaries on top, such as may be provided by frequency selective surfaces or other patterned structures. We find that such composite lossy coating can exceed the attenuation of a simple lossy slab, but with limited bandwidth. We also find that only by increasing permeability, and not permittivity, can the peak absorption frequency be lowered for a given thickness without reducing the relative absorption bandwidth. Index Terms Attenuation measurement, conducting materials, dielectric materials, microwave propagation, surface waves. I. INTRODUCTION It is well-known that a grounded dielectric slab can support bound surface waves [1], [2]. The bound waves are related to the ordinary surface currents that occur in any metal surface in the limit where the dielectric thickness approaches zero. The surface currents contribute significantly to interference between nearby antennas or electronics [3], [4], and suppressing the currents such as by using a lossy coating can be an important tool for interference reduction [5], [6]. An analytical solution to the attenuation by a dielectric slab has been provided by Attwood [7], where he calculated loss terms for both the conductor loss in the metal surface and dielectric loss due to the slab. However, there has been no attempt to analyze general trends or theoretical limits of the attenuation by lossy coatings, particularly for surface waves. The closest general analysis is for plane waves at normal incidence [8]. Furthermore, Attwood s original analysis cannot be applied to many modern lossy coatings which may contain magnetic materials, as well as patterned composite materials such as frequency selective surfaces [9] or metamaterials [10]. In this work, we extend Attwood s analysis to include both of these effects and we verify our analytical solution with numerical simulations. We refer to lossy slabs which may contain impedance sheets, FSS, or other such structures collectively as coatings. Our analytical solution allows us to sweep a wide range of material properties to derive general trends and establish theoretical limits. In particular, we find that the attenuation by a lossy slab can be approximated by a simple formula. Adding an impedance sheet on top of the slab that can be described by an equivalent circuit can provide greater attenuation than the slab alone, but over limited bandwidth. Thus, lossy coatings combined with frequency selective surfaces, metamaterials or other such patterned surfaces can be effective narrowband absorbers. Manuscript received October 11, 2012; revised May 21, 2013; accepted September 26, Date of publication November 01, 2013; date of current version December 31, This work was supported in part by ONR contract N S. Kim is with the Applied Electromagnetic Group, Electrical and Computer Engineering Department, University of California at San Diego, La Jolla, CA USA ( sak041@ucsd.edu). D. F. Sievenpiper is with the University of California at San Diego, La Jolla, CA USA. Color versions of one or more of the figures in this communication are available online at Digital Object Identifier /TAP X 2013 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.
COMPACT COUPLED-FED WIDEBAND ANTENNA FOR INTERNAL EIGHT-BAND LTE/WWAN TABLET COMPUTER APPLICATIONS
J. of Electromagn. Waves and Appl., Vol. 26, x y, 2012 COMPACT COUPLED-FED WIDEBAND ANTENNA FOR INTERNAL EIGHT-BAND LTE/WWAN TABLET COMPUTER APPLICATIONS Y.-L. Ban 1, *, S.-C. Sun 1, J. L.-W. Li 1, and
More informationSize Reduction of Octa-Band WWAN/LTE Antenna using Slotted Spirals with Non Uniform Width for Tablets
Size Reduction of Octa-Band WWAN/LTE Antenna using Slotted Spirals with Non Uniform Width for Tablets R. Brinda Assistant Professor S. Subha S. Susmitha ABSTRACT The effect of slotted spiral technique
More informationTwo-Strip Narrow-Frame Monopole Antenna with a Capacitor Loaded for Hepta-Band Smartphone Applications
Progress In Electromagnetics Research, Vol. 145, 31 38, 2014 Two-Strip Narrow-Frame Monopole Antenna with a Capacitor Loaded for Hepta-Band Smartphone Applications Zhong-Xiang Chen 1, Yong-Ling Ban 1,
More informationA Coupled-Fed Reconfigurable Antenna for Internal LTE Mobile Phone Applications
Progress In Electromagnetics Research Letters, Vol. 7, 39 44, 217 A Coupled-Fed Reconfigurable Antenna for Internal LTE Mobile Phone Applications Xinxing Zhong * Abstract In this paper, a multi-frequency
More informationDESIGN OF PLANAR COUPLED-FED MONOPOLE ANTENNA FOR EIGHT-BAND LTE/WWAN MOBILE HANDSET APPLICATION
Progress In Electromagnetics Research C, Vol. 33, 185 198, 2012 DESIGN OF PLANAR COUPLED-FED MONOPOLE ANTENNA FOR EIGHT-BAND LTE/WWAN MOBILE HANDSET APPLICATION C.-H. Ku 1, H.-W. Liu 2, *, and Y.-X. Ding
More informationCompact Triple-Band Monopole Antenna for WLAN/WiMAX-Band USB Dongle Applications
Compact Triple-Band Monopole Antenna for WLAN/WiMAX-Band USB Dongle Applications Ya Wei Shi, Ling Xiong, and Meng Gang Chen A miniaturized triple-band antenna suitable for wireless USB dongle applications
More informationResearch Article Compact Antenna with Frequency Reconfigurability for GPS/LTE/WWAN Mobile Handset Applications
Antennas and Propagation Volume 216, Article ID 3976936, 8 pages http://dx.doi.org/1.1155/216/3976936 Research Article Compact Antenna with Frequency Reconfigurability for GPS/LTE/WWAN Mobile Handset Applications
More informationSMALL-SIZE MICROSTRIP-COUPLED PRINTED PIFA FOR 2.4/5.2/5.8 GHz WLAN OPERATION IN THE LAPTOP COMPUTER
SMALL-SIZE MICROSTRIP-COUPLED PRINTED PIFA FOR 2.4/5.2/5.8 GHz WLAN OPERATION IN THE LAPTOP COMPUTER Kin-Lu Wong and Wei-Ji Chen Department of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung
More informationA folded loop antenna with four resonant modes
Title A folded loop antenna with four resonant modes Author(s) Wu, D; Cheung, SW; Yuk, TI Citation The 9th European Conference on Antennas and Propagation (EuCAP 2015), Lisbon, Portugal, 13-17 April 2015.
More informationPRINTED WIDEBAND ANTENNA WITH CHIP- CAPACITOR-LOADED INDUCTIVE STRIP FOR LTE/GSM/UMTS WWAN WIRELESS USB DONGLE AP- PLICATIONS
Progress In Electromagnetics Research, Vol. 128, 313 329, 2012 PRINTED WIDEBAND ANTENNA WITH CHIP- CAPACITOR-LOADED INDUCTIVE STRIP FOR LTE/GSM/UMTS WWAN WIRELESS USB DONGLE AP- PLICATIONS Y.-L. Ban 1,
More informationWITH the rapid development of wireless technology, various
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, VOL. 17, NO. 8, AUGUST 2018 1575 A Planar Printed Nona-Band Loop-Monopole Reconfigurable Antenna for Mobile Handsets Yu Liu,PeiqinLiu, Student Member, IEEE,
More informationResearch Article Small-Size Seven-Band WWAN/LTE Antenna with Distributed LC Resonant Circuit for Smartphone Application
Antennas and Propagation Volume 21, Article ID 63674, 9 pages http://dx.doi.org/1.11/21/63674 Research Article Small-Size Seven-Band WWAN/LTE Antenna with Distributed LC Resonant Circuit for Smartphone
More informationIEEE Antennas and Wireless Propagation Letters. Copyright Institute of Electrical and Electronics Engineers.
Title Dual-band monopole antenna with frequency-tunable feature for WiMAX applications Author(s) Sun, X; Cheung, SW; Yuk, TTI Citation IEEE Antennas and Wireless Propagation Letters, 2013, v. 12, p. 100-103
More informationA MINIATURIZED INTERNAL WIDEBAND ANTENNA FOR WIRELESS USB DONGLE APPLICATION
Progress In Electromagnetics Research Letters, Vol. 17, 67 74, 2010 A MINIATURIZED INTERNAL WIDEBAND ANTENNA FOR WIRELESS USB DONGLE APPLICATION J.-G. Gong, Y.-C. Jiao, Q. Li, J. Wang, and G. Zhao National
More informationA COMPACT MULTIBAND MONOPOLE ANTENNA FOR WLAN/WIMAX APPLICATIONS
Progress In Electromagnetics Research Letters, Vol. 23, 147 155, 2011 A COMPACT MULTIBAND MONOPOLE ANTENNA FOR WLAN/WIMAX APPLICATIONS Z.-N. Song, Y. Ding, and K. Huang National Key Laboratory of Antennas
More informationTRIPLE-BAND OMNI-DIRECTIONAL ANTENNA FOR WLAN APPLICATION
Progress In Electromagnetics Research, PIER 76, 477 484, 2007 TRIPLE-BAND OMNI-DIRECTIONAL ANTENNA FOR WLAN APPLICATION Y.-J. Wu, B.-H. Sun, J.-F. Li, and Q.-Z. Liu National Key Laboratory of Antennas
More informationCompact Triple-Band Monopole Antenna with Inverted-L Slots and SRR for WLAN/WiMAX Applications
Progress In Electromagnetics Research Letters, Vol. 55, 1 6, 2015 Compact Triple-Band Monopole Antenna with Inverted-L Slots and SRR for WLAN/WiMAX Applications Yuan Xu *, Cilei Zhang, Yingzeng Yin, and
More informationA NOVEL DESIGN OF LTE SMART MOBILE ANTENNA WITH MULTIBAND OPERATION
Progress In Electromagnetics Research C, Vol. 42, 19 124, 213 A NOVEL DESIGN OF LTE SMART MOBILE ANTENNA WITH MULTIBAND OPERATION Sheng-Ming Deng 1, *, Ching-Long Tsai 1, Jiun-Peng Gu 2, Kwong-Kau Tiong
More informationDesign of Compact Multiband Antenna for Wwan/Lte Mobile Phone Applications
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735. PP 44-48 www.iosrjournals.org Design of Compact Multiband Antenna for Wwan/Lte Mobile Phone Applications
More informationINTERNAL SHORTED PATCH ANTENNA INTEGRATED WITH A SHIELDING METAL CASE FOR UMTS OPER- ATION IN A PDA PHONE
Progress In Electromagnetics Research C, Vol. 10, 63 73, 2009 INTERNAL SHORTED PATCH ANTENNA INTEGRATED WITH A SHIELDING METAL CASE FOR UMTS OPER- ATION IN A PDA PHONE Y.-T. Liu Department of Physics R.O.C.
More informationA compact planar ultra-wideband handset antenna with L-Shaped extended ground stubs
This article has been accepted and published on J-STAGE in advance of copyediting. Content is final as presented. IEICE Electronics Express, Vol.*, No.*, 1 10 A compact planar ultra-wideband handset antenna
More informationDesign of a Short/Open-Ended Slot Antenna with Capacitive Coupling Feed Strips for Hepta-Band Mobile Application
JOURNAL OF ELECTROMAGNETIC ENGINEERING AND SCIENCE, VOL. 18, NO. 1, 46~51, JAN. 2018 https://doi.org/10.26866/jees.2018.18.1.46 ISSN 2234-8395 (Online) ISSN 2234-8409 (Print) Design of a Short/Open-Ended
More informationCitation Electromagnetics, 2012, v. 32 n. 4, p
Title Low-profile microstrip antenna with bandwidth enhancement for radio frequency identification applications Author(s) Yang, P; He, S; Li, Y; Jiang, L Citation Electromagnetics, 2012, v. 32 n. 4, p.
More informationA dual-band antenna for wireless USB dongle applications
Title A dual-band antenna for wireless USB dongle applications Author(s) Sun, X; Cheung, SW; Yuk, TI Citation The 2013 International Workshop on Antenna Technology (iwat 2013), Karlsruhe, Germany, 4-6
More informationCOMPACT WIDE-SLOT TRI-BAND ANTENNA FOR WLAN/WIMAX APPLICATIONS
Progress In Electromagnetics Research Letters, Vol. 18, 9 18, 2010 COMPACT WIDE-SLOT TRI-BAND ANTENNA FOR WLAN/WIMAX APPLICATIONS Q. Zhao, S. X. Gong, W. Jiang, B. Yang, and J. Xie National Laboratory
More informationMultiband Printed Monopole Slot Antenna for WWAN Operation in the Laptop Computer Kin-Lu Wong, Fellow, IEEE, and Li-Chun Lee
324 IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 57, NO. 2, FEBRUARY 2009 Multiband Printed Monopole Slot Antenna for WWAN Operation in the Laptop Computer Kin-Lu Wong, Fellow, IEEE, and Li-Chun
More informationA Very Wideband Dipole-Loop Composite Patch Antenna with Simple Feed
Progress In Electromagnetics Research Letters, Vol. 60, 9 16, 2016 A Very Wideband Dipole-Loop Composite Patch Antenna with Simple Feed Kai He 1, *, Peng Fei 2, and Shu-Xi Gong 1 Abstract By combining
More informationA COMPACT DUAL INVERTED C-SHAPED SLOTS ANTENNA FOR WLAN APPLICATIONS
Progress In Electromagnetics Research Letters, Vol. 17, 115 123, 2010 A COMPACT DUAL INVERTED C-SHAPED SLOTS ANTENNA FOR WLAN APPLICATIONS D. Xi, L. H. Wen, Y. Z. Yin, Z. Zhang, and Y. N. Mo National Laboratory
More informationA CPW-fed Microstrip Fork-shaped Antenna with Dual-band Circular Polarization
Machine Copy for Proofreading, Vol. x, y z, 2016 A CPW-fed Microstrip Fork-shaped Antenna with Dual-band Circular Polarization Chien-Jen Wang and Yu-Wei Cheng * Abstract This paper presents a microstrip
More informationA Multiband Four-Antenna System for the Mobile Phones Applications
Progress In Electromagnetics Research Letters, Vol. 50, 55 60, 2014 A Multiband Four-Antenna System for the Mobile Phones Applications Jingli Guo 1, *,BinChen 1, Youhuo Huang 1, and Hongwei Yuan 2 Abstract
More informationDESIGN OF A NOVEL MICROSTRIP-FED DUAL-BAND SLOT ANTENNA FOR WLAN APPLICATIONS
Progress In Electromagnetics Research Letters, Vol. 13, 75 81, 2010 DESIGN OF A NOVEL MICROSTRIP-FED DUAL-BAND SLOT ANTENNA FOR WLAN APPLICATIONS S. Gai, Y.-C. Jiao, Y.-B. Yang, C.-Y. Li, and J.-G. Gong
More informationChapter 7 Design of the UWB Fractal Antenna
Chapter 7 Design of the UWB Fractal Antenna 7.1 Introduction F ractal antennas are recognized as a good option to obtain miniaturization and multiband characteristics. These characteristics are achieved
More informationDESIGN OF A NOVEL WIDEBAND LOOP ANTENNA WITH PARASITIC RESONATORS. Microwaves, Xidian University, Xi an, Shaanxi, China
Progress In Electromagnetics Research Letters, Vol. 37, 47 54, 2013 DESIGN OF A NOVEL WIDEBAND LOOP ANTENNA WITH PARASITIC RESONATORS Shoutao Fan 1, *, Shufeng Zheng 1, Yuanming Cai 1, Yingzeng Yin 1,
More informationDESIGN OF TRI-BAND PRINTED MONOPOLE ANTENNA FOR WLAN AND WIMAX APPLICATIONS
Progress In Electromagnetics Research C, Vol. 23, 265 275, 2011 DESIGN OF TRI-BAND PRINTED MONOPOLE ANTENNA FOR WLAN AND WIMAX APPLICATIONS J. Chen *, S. T. Fan, W. Hu, and C. H. Liang Key Laboratory of
More informationBROADBAND SERIES-FED DIPOLE PAIR ANTENNA WITH PARASITIC STRIP PAIR DIRECTOR
Progress In Electromagnetics Research C, Vol. 45, 1 13, 2013 BROADBAND SERIES-FED DIPOLE PAIR ANTENNA WITH PARASITIC STRIP PAIR DIRECTOR Junho Yeo 1, Jong-Ig Lee 2, *, and Jin-Taek Park 3 1 School of Computer
More informationA Broadband Omnidirectional Antenna Array for Base Station
Progress In Electromagnetics Research C, Vol. 54, 95 101, 2014 A Broadband Omnidirectional Antenna Array for Base Station Bo Wang 1, *, Fushun Zhang 1,LiJiang 1, Qichang Li 2, and Jian Ren 1 Abstract A
More informationMiniature Multiband Antenna for WLAN and X-Band Satellite Communication Applications
Progress In Electromagnetics Research Letters, Vol. 75, 13 18, 2018 Miniature Multiband Antenna for WLAN and X-Band Satellite Communication Applications Ruixing Zhi, Mengqi Han, Jing Bai, Wenying Wu, and
More informationDesign of a Novel Dual - Band Planar Inverted F Antenna for Mobile Radio Applications
177 Design of a Novel Dual - Band Planar Inverted F Antenna for Mobile Radio Applications N. Chattoraj 1,, Qurratulain 1,, 1 ECE Department, Birla Institute of Technology, Mesra, Ranchi 835215, India.
More informationResearch Article A Compact Experimental Planar Antenna with a USB Connector for Mobile Phone Application
Antennas and Propagation Volume 215, Article ID 217241, 6 pages http://dx.doi.org/1.1155/215/217241 Research Article A Compact Experimental Planar Antenna with a USB Connector for Mobile Phone Application
More informationProgress In Electromagnetics Research C, Vol. 40, 1 13, 2013
Progress In Electromagnetics Research C, Vol. 40, 1 13, 2013 COMPACT MULTIBAND FOLDED IFA FOR MOBILE APPLICATION Shuxi Gong *, Pei Duan, Pengfei Zhang, Fuwei Wang, Qiaonan Qiu, and Qian Liu National Laboratory
More informationA Novel Multiband MIMO Antenna for TD-LTE and WLAN Applications
Progress In Electromagnetics Research Letters, Vol. 74, 131 136, 2018 A Novel Multiband MIMO Antenna for TD-LTE and WLAN Applications Jing Bai, Ruixing Zhi, Wenying Wu, Mengmeng Shangguan, Bingbing Wei,
More informationFour-Element Dual-Band MIMO Antenna System for Mobile Phones
Progress In Electromagnetics Research C, Vol. 6, 47 56, 215 Four-Element Dual-Band MIMO Antenna ystem for Mobile Phones Lingsheng Yang *, Hongling Xu, Jianping Fang, and Tao Li Abstract A dual-band multiple-input-multiple-output
More informationAntenna with Two Folded Strips Coupled to a T-Shaped Monopole
Progress In Electromagnetics Research M, Vol. 60, 197 207, 2017 Antenna with Two Folded Strips Coupled to a T-Shaped Monopole The-Nan Chang * and Yi-Lin Chan Abstract An antenna designated mainly for cellular
More informationSMALL SEMI-CIRCLE-LIKE SLOT ANTENNA FOR ULTRA-WIDEBAND APPLICATIONS
Progress In Electromagnetics Research C, Vol. 13, 149 158, 2010 SMALL SEMI-CIRCLE-LIKE SLOT ANTENNA FOR ULTRA-WIDEBAND APPLICATIONS F. Amini and M. N. Azarmanesh Microelectronics Research Laboratory Urmia
More informationA Phase Diversity Printed-Dipole Antenna Element for Patterns Selectivity Array Application
Progress In Electromagnetics Research Letters, Vol. 78, 105 110, 2018 A Phase Diversity Printed-Dipole Antenna Element for Patterns Selectivity Array Application Fukun Sun *, Fushun Zhang, and Chaoqiang
More informationPrinted =8-PIFA for Penta-Band WWAN Operation in the Mobile Phone Chih-Hua Chang, Student Member, IEEE, and Kin-Lu Wong, Fellow, IEEE
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 57, NO. 5, MAY 2009 1373 Printed =8-PIFA for Penta-Band WWAN Operation in the Mobile Phone Chih-Hua Chang, Student Member, IEEE, and Kin-Lu Wong, Fellow,
More informationPerformance analysis of Meandered loop and Top loaded monopole antenna for Wireless Applications
Performance analysis of Meandered loop and Top loaded monopole antenna for Wireless Applications M. Ilakkia¹, T. Anita Jones Mary², Dr. C. S. Ravichandran³, Abstract This paper presents the design of multiple
More informationPenta-Band Dielectric Loaded Folded Loop Antenna for Mobile Handset
IOSR Journal of Engineering (IOSRJEN) ISSN (e): 2250-3021, ISSN (p): 2278-8719 Vol. 04, Issue 05 (May. 2014), V6 PP 10-16 www.iosrjen.org Penta-Band Dielectric Loaded Folded Loop Antenna for Mobile Handset
More informationVolume 2, Number 4, 2016 Pages Jordan Journal of Electrical Engineering ISSN (Print): , ISSN (Online):
JJEE Volume 2, Number 4, 2016 Pages 270-277 Jordan Journal of Electrical Engineering ISSN (Print): 2409-9600, ISSN (Online): 2409-9619 Folded, Low Profile Multiband Loop Antenna for 4G Smartphone Applications
More informationDUAL-WIDEBAND MONOPOLE LOADED WITH SPLIT RING FOR WLAN APPLICATION
Progress In Electromagnetics Research Letters, Vol. 21, 11 18, 2011 DUAL-WIDEBAND MONOPOLE LOADED WITH SPLIT RING FOR WLAN APPLICATION W.-J. Wu, Y.-Z. Yin, S.-L. Zuo, Z.-Y. Zhang, and W. Hu National Key
More informationUltra Wide Band Compact Antenna with Dual U- Shape Slots for Notch-Band Application
Signal Processing and Renewable Energy June 2018, (pp.45-49) ISSN: Ultra Wide Band Compact Antenna with Dual U- Shape Slots for Notch-Band Application Ferdows B. Zarrabi 1* 1 Faculty of Engineering, Science
More informationCompact and Low Profile MIMO Antenna for Dual-WLAN-Band Access Points
Progress In Electromagnetics Research Letters, Vol. 67, 97 102, 2017 Compact and Low Profile MIMO Antenna for Dual-WLAN-Band Access Points Xinyao Luo *, Jiade Yuan, and Kan Chen Abstract A compact directional
More informationINTERNAL EIGHT-BAND WWAN/LTE HANDSET ANTENNA USING LOOP SHORTING STRIP AND CHIP- CAPACITOR-LOADED FEEDING STRIP FOR BANDWIDTH ENHANCEMENT
INTERNAL EIGHT-BAND WWAN/LTE HANDSET ANTENNA USING LOOP SHORTING STRIP AND CHIP- CAPACITOR-LOADED FEEDING STRIP FOR BANDWIDTH ENHANCEMENT Kin-Lu Wong and Yu-Wei Chang Department of Electrical Engineering,
More informationISSN: [Sherke* et al., 5(12): December, 2016] Impact Factor: 4.116
IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY COMPACT ULTRA WIDE BAND ANTENNA WITH BAND NOTCHED CHARACTERISTICS. Raksha Sherke *, Ms. Prachi C. Kamble, Dr. Lakshmappa K Ragha
More informationCompact UWB antenna with dual band-notches for WLAN and WiMAX applications
LETTER IEICE Electronics Express, Vol.10, No.17, 1 6 Compact UWB antenna with dual band-notches for WLAN and WiMAX applications Hao Liu a), Ziqiang Xu, Bo Wu, and Jiaxuan Liao Research Institute of Electronic
More informationGPS Patch Antenna Loaded with Fractal EBG Structure Using Organic Magnetic Substrate
Progress In Electromagnetics Research Letters, Vol. 58, 23 28, 2016 GPS Patch Antenna Loaded with Fractal EBG Structure Using Organic Magnetic Substrate Encheng Wang * and Qiuping Liu Abstract In this
More informationRCS Reduction of Patch Array Antenna by Complementary Split-Ring Resonators Structure
Progress In Electromagnetics Research C, Vol. 51, 95 101, 2014 RCS Reduction of Patch Array Antenna by Complementary Split-Ring Resonators Structure Jun Zheng 1, 2, Shaojun Fang 1, Yongtao Jia 3, *, and
More informationResearch Article Wideband Dual-Element Antenna Array for MIMO Mobile Phone Applications
Antennas and Propagation Volume 215, Article ID 43482, 7 pages http://dx.doi.org/1.1155/215/43482 Research Article Wideband Dual-Element Antenna Array for MIMO Mobile Phone Applications Yuanqiang Wang,
More informationMultiband Compact Low SAR Mobile Hand Held Antenna
Progress In Electromagnetics Research Letters, Vol. 49, 65 71, 2014 Multiband Compact Low SAR Mobile Hand Held Antenna Haythem H. Abdullah * and Kamel S. Sultan Abstract With the vast emergence of new
More informationCOMPACT TRIPLE-BAND MONOPOLE ANTENNA WITH C-SHAPED AND S-SHAPED MEANDER STRIPS FOR WLAN/WIMAX APPLICATIONS
Progress In Electromagnetics Research Letters, Vol. 15, 107 116, 2010 COMPACT TRIPLE-BAND MONOPOLE ANTENNA WITH C-SHAPED AND S-SHAPED MEANDER STRIPS FOR WLAN/WIMAX APPLICATIONS F. Li, L.-S. Ren, G. Zhao,
More informationOffset-fed UWB antenna with multi-slotted ground plane. Sun, YY; Islam, MT; Cheung, SW; Yuk, TI; Azim, R; Misran, N
Title Offset-fed UWB antenna with multi-slotted ground plane Author(s) Sun, YY; Islam, MT; Cheung, SW; Yuk, TI; Azim, R; Misran, N Citation The 2011 International Workshop on Antenna Technology (iwat),
More informationR. Zhang, G. Fu, Z.-Y. Zhang, and Q.-X. Wang Key Laboratory of Antennas and Microwave Technology Xidian University, Xi an, Shaanxi , China
Progress In Electromagnetics Research Letters, Vol. 2, 137 145, 211 A WIDEBAND PLANAR DIPOLE ANTENNA WITH PARASITIC PATCHES R. Zhang, G. Fu, Z.-Y. Zhang, and Q.-X. Wang Key Laboratory of Antennas and Microwave
More informationDesign of a Wideband Sleeve Antenna with Symmetrical Ridges
Progress In Electromagnetics Research Letters, Vol. 55, 7, 5 Design of a Wideband Sleeve Antenna with Symmetrical Ridges Peng Huang *, Qi Guo, Zhi-Ya Zhang, Yang Li, and Guang Fu Abstract In this letter,
More informationDUAL BAND MONOPOLE ANTENNA FOR WLAN/WIMAX APPLICATIONS
Rev. Roum. Sci. Techn. Électrotechn. et Énerg. Vol. 63, 3, pp. 283 288, Bucarest, 2018 Électronique et transmission de l information DUAL BAND MONOPOLE ANTENNA FOR WLAN/WIMAX APPLICATIONS BIPLAB BAG 1,
More informationDRAFT. Design and Measurements of a Five Independent Band Patch Antenna for Different Wireless Applications
1 Design and Measurements of a Five Independent Band Patch Antenna for Different Wireless Applications Hattan F. AbuTarboush *(1), Karim M. Nasr (2), R. Nilavalan (1), H. S. Al-Raweshidy (1) and Martin
More informationA Compact Miniaturized Frequency Selective Surface with Stable Resonant Frequency
Progress In Electromagnetics Research Letters, Vol. 62, 17 22, 2016 A Compact Miniaturized Frequency Selective Surface with Stable Resonant Frequency Ning Liu 1, *, Xian-Jun Sheng 2, and Jing-Jing Fan
More informationCompact Dual-Band MIMO Antenna with High Port Isolation for WLAN Applications
Progress In Electromagnetics Research C, Vol. 49, 97 104, 2014 Compact Dual-Band MIMO Antenna with High Port Isolation for WLAN Applications Hao Qin * and Yuan-Fu Liu Abstract A compact dual-band MIMO
More informationMINIATURIZED MODIFIED DIPOLES ANTENNA FOR WLAN APPLICATIONS
Progress In Electromagnetics Research Letters, Vol. 24, 139 147, 211 MINIATURIZED MODIFIED DIPOLES ANTENNA FOR WLAN APPLICATIONS Y. Y. Guo 1, *, X. M. Zhang 1, G. L. Ning 1, D. Zhao 1, X. W. Dai 2, and
More informationA NOVEL DUAL-BAND PATCH ANTENNA FOR WLAN COMMUNICATION. E. Wang Information Engineering College of NCUT China
Progress In Electromagnetics Research C, Vol. 6, 93 102, 2009 A NOVEL DUAL-BAND PATCH ANTENNA FOR WLAN COMMUNICATION E. Wang Information Engineering College of NCUT China J. Zheng Beijing Electro-mechanical
More informationSmall-Size Monopole Antenna with Dual Band-Stop Function for Ultra-Wideband Wireless Communications
Engineering Science 2016; 1(1): 15-21 http://www.sciencepublishinggroup.com/j/es doi: 10.11648/j.es.20160101.13 Small-Size Monopole Antenna with Dual Band-Stop Naser Ojaroudi Parchin *, Mehdi Salimitorkamani
More informationA Compact Dual Band-Notched Ultrawideband Antenna with λ/4 Stub and Open Slots
Progress In Electromagnetics Research C, Vol. 49, 133 139, 2014 A Compact Dual Band-Notched Ultrawideband Antenna with λ/4 Stub and Open Slots Jian Ren * and Yingzeng Yin Abstract A novel compact UWB antenna
More informationA Simple Dual-Wideband Magneto-Electric Dipole Directional Antenna
Progress In Electromagnetics Research Letters, Vol. 63, 45 51, 2016 A Simple Dual-Wideband Magneto-Electric Dipole Directional Antenna Lei Yang *,Zi-BinWeng,andXinshuaiLuo Abstract A simple dual-wideband
More informationA Dual-Polarized MIMO Antenna with EBG for 5.8 GHz WLAN Application
Progress In Electromagnetics Research Letters, Vol. 51, 15 2, 215 A Dual-Polarized MIMO Antenna with EBG for 5.8 GHz WLAN Application Xiaoyan Zhang 1, 2, *, Xinxing Zhong 1,BinchengLi 3, and Yiqiang Yu
More informationDUAL-BAND LOW PROFILE DIRECTIONAL ANTENNA WITH HIGH IMPEDANCE SURFACE REFLECTOR
Progress In Electromagnetics Research Letters, Vol. 25, 67 75, 211 DUAL-BAND LOW PROFILE DIRECTIONAL ANTENNA WITH HIGH IMPEDANCE SURFACE REFLECTOR X. Mu *, W. Jiang, S.-X. Gong, and F.-W. Wang Science
More informationA Wideband Dual-polarized Modified Bowtie Antenna for 2G/3G/LTE Base-station Applications
Progress In Electromagnetics Research Letters, Vol. 61, 131 137, 2016 A Wideband Dual-polarized Modified Bowtie Antenna for 2G/3G/LTE Base-station Applications Zhao Yang *, Cilei Zhang, Yingzeng Yin, and
More informationCOMPACT DUAL-BAND CIRCULARLY-POLARIZED AN- TENNA WITH C-SLOTS FOR CNSS APPLICATION. Education, Shenzhen University, Shenzhen, Guangdong , China
Progress In Electromagnetics Research Letters, Vol. 40, 9 18, 2013 COMPACT DUAL-BAND CIRCULARLY-POLARIZED AN- TENNA WITH C-SLOTS FOR CNSS APPLICATION Maowen Wang 1, *, Baopin Guo 1, and Zekun Pan 2 1 Key
More informationCompact UWB Planar Antenna with Triple Band EMI Reduction Characteristics for WiMAX/WLAN/X-Band Satellite Downlink Frequency
Progress In Electromagnetics Research M, Vol. 1, 13 131, 17 Compact UWB Planar Antenna with Triple Band EMI Reduction Characteristics for WiMAX/WLAN/X-Band Satellite Downlink Frequency Priyanka Usha *
More informationA BENT, SHORT-CIRCUITED, METAL-PLATE DIPOLE ANTENNA FOR 2.4-GHZ WLAN OPERATION
Progress In Electromagnetics Research Letters, Vol. 16, 191 197, 2010 A BENT, SHORT-CIRCUITED, METAL-PLATE DIPOLE ANTENNA FOR 2.4-GHZ WLAN OPERATION S.-W. Su and T.-C. Hong Network Access Strategic Business
More informationNOVEL PLANAR INVERTED CONE RING MONOPOLE ANTENNA FOR UWB APPLICATIONS
NOVEL PLANAR INVERTED CONE RING MONOPOLE ANTENNA FOR UWB APPLICATIONS Su Sandar Thwin 1 1 Faculty of Engineering, Multimedia University, Cyberjaya 63, Selangor, Malaysia su.sandar@mmu.edu.my ABSTRACT This
More informationA COMPACT UWB MONOPOLE ANTENNA WITH WIMAX AND WLAN BAND REJECTIONS
Progress In Electromagnetics Research Letters, Vol. 31, 159 168, 2012 A COMPACT UWB MONOPOLE ANTENNA WITH WIMAX AND WLAN BAND REJECTIONS S-M. Zhang *, F.-S. Zhang, W.-Z. Li, T. Quan, and H.-Y. Wu National
More informationA Compact Triple Band Antenna for Bluetooth, WLAN and WiMAX Applications
ACES JOURNAL, Vol. 32, No. 5, May 2017 424 A Compact Triple Band Antenna for Bluetooth, WLAN and WiMAX Applications Kai Yu 1, Yingsong Li 1,*, and Wenhua Yu 2 1 College of Information and Communications
More informationSmall Planar Antenna for WLAN Applications
Small Planar Antenna for WLAN Applications # M. M. Yunus 1,2, N. Misran 2,3 and M. T. Islam 3 1 Faculty of Electronics and Computer Engineering, Universiti Teknikal Malaysia Melaka 2 Faculty of Engineering,
More informationPRINTED BLUETOOTH AND UWB ANTENNA WITH DUAL BAND-NOTCHED FUNCTIONS
Progress In Electromagnetics Research Letters, Vol. 26, 39 48, 2011 PRINTED BLUETOOTH AND UWB ANTENNA WITH DUAL BAND-NOTCHED FUNCTIONS F.-C. Ren *, F.-S. Zhang, J.-H. Bao, Y.-C. Jiao, and L. Zhou National
More informationMODERN AND future wireless systems are placing
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES 1 Wideband Planar Monopole Antennas With Dual Band-Notched Characteristics Wang-Sang Lee, Dong-Zo Kim, Ki-Jin Kim, and Jong-Won Yu, Member, IEEE Abstract
More informationResearch Article Compact Dual-Band Dipole Antenna with Asymmetric Arms for WLAN Applications
Antennas and Propagation, Article ID 19579, pages http://dx.doi.org/1.1155/21/19579 Research Article Compact Dual-Band Dipole Antenna with Asymmetric Arms for WLAN Applications Chung-Hsiu Chiu, 1 Chun-Cheng
More informationHigh gain W-shaped microstrip patch antenna
High gain W-shaped microstrip patch antenna M. N. Shakib 1a),M.TariqulIslam 2, and N. Misran 1 1 Department of Electrical, Electronic and Systems Engineering, Universiti Kebangsaan Malaysia (UKM), UKM
More informationCOMPACT PLANAR MULTIBAND ANTENNA FOR GPS,DCS,2.4/5.8 GHz WLAN APPLICATIONS
Appendix -B COMPACT PLANAR MULTIBAND ANTENNA FOR GPS,DCS,2.4/5.8 GHz WLAN APPLICATIONS Contents 1. Introduction 2. Antenna design 3. Results and discussion 4. Conclusion 5. References A compact single
More informationA Miniaturized 878 MHz Slotted Meander Line Monopole Antenna for Ultra High Frequency Applications
Progress In Electromagnetics Research Letters, Vol. 67, 33 38, 217 A Miniaturized 878 MHz Slotted Meander Line Monopole Antenna for Ultra High Frequency Applications Nabilah Ripin *, Ahmad A. Sulaiman,
More informationA Pair Dipole Antenna with Double Tapered Microstrip Balun for Wireless Communications
J Electr Eng Technol.21; 1(3): 181-18 http://dx.doi.org/1.37/jeet.21.1.3.181 ISSN(Print) 197-12 ISSN(Online) 293-7423 A Pair Dipole Antenna with Double Tapered Microstrip Balun for Wireless Communications
More informationMultiband USB Antenna for Connecting Sensor Network and Internet
Sensors and Materials, Vol. 29, No. 4 (2017) 483 490 MYU Tokyo 483 S & M 1341 Multiband USB Antenna for Connecting Sensor Network and Internet Wen-Shan Chen, Chien-Min Cheng, * Yu-Liang Wang, and Guan-Quan
More informationA Dual-Band MIMO Monopole Antenna System for Set Top Box and WLAN Chipsets
Proceedings of the 2 nd World Congress on Electrical Engineering and Computer Systems and Science (EECSS'16) Budapest, Hungary August 16 17, 2016 Paper No. EEE 140 DOI: 10.11159/eee16.140 A Dual-Band MIMO
More informationA COMPACT CPW-FED MONOPOLE ANTENNA WITH A U-SHAPED STRIP AND A PAIR OF L-SLITS GROUND FOR WLAN AND WIMAX APPLICATIONS
Progress In Electromagnetics Research Letters, Vol. 16, 11 19, 21 A COMPACT CPW-FED MONOPOLE ANTENNA WITH A U-SHAPED STRIP AND A PAIR OF L-SLITS GROUND FOR WLAN AND WIMAX APPLICATIONS Z.-Y. Liu, Y.-Z.
More informationDesign of A PIFA Antenna with Slots on Ground to Improve Bandwidth
Design of A PIFA Antenna with Slots on Ground to Improve Bandwidth Anoop Varghese 1, Kazi Aslam 2 Dept. of Electronics & Telecommunication Engineering, AISSMS COE, Pune, India 1 Assistant Professor, Dept.
More informationCompact UWB MIMO Antenna with ACS-Fed Structure
Progress In Electromagnetics Research C, Vol. 50, 9 7, 014 Compact UWB MIMO Antenna with ACS-Fed Structure Hao Qin * and Yuan-Fu Liu Abstract A compact UWB (Ultrawideband) MIMO (Multiple-input multiple-output)
More informationFrequency tunable antenna for Digital Video broadcasting handheld application
Frequency tunable antenna for Digital Video broadcasting handheld application M. Abdallah, F. Colombel, G. Le Ray, and M. Himdi Institut d Electronique et de Télécommunications de Rennes, UMR-CNRS 6164,
More informationGain Enhancement and Wideband RCS Reduction of a Microstrip Antenna Using Triple-Band Planar Electromagnetic Band-Gap Structure
Progress In Electromagnetics Research Letters, Vol. 65, 103 108, 2017 Gain Enhancement and Wideband RCS Reduction of a Microstrip Antenna Using Triple-Band Planar Electromagnetic Band-Gap Structure Yang
More informationA Compact Dual-Polarized Antenna for Base Station Application
Progress In Electromagnetics Research Letters, Vol. 59, 7 13, 2016 A Compact Dual-Polarized Antenna for Base Station Application Guan-Feng Cui 1, *, Shi-Gang Zhou 2,Shu-XiGong 1, and Ying Liu 1 Abstract
More informationA Low-Profile Planar Monopole Antenna for Multiband Operation of Mobile Handsets
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 51, NO. 1, JANUARY 2003 121 A Low-Profile Planar Monopole Antenna for Multiband Operation of Mobile Handsets Kin-Lu Wong, Senior Member, IEEE, Gwo-Yun
More informationAn improved UWB Patch Antenna Design using Multiple Notches and Finite Ground Plane
73 An improved UWB Patch Antenna Design using Multiple Notches and Finite Ground Plane A.P Padmavathy, M.Ganesh Madhan, Department of Electronics Engineering, Madras Institute of Technology, Anna University,
More informationProgress In Electromagnetics Research Letters, Vol. 23, , 2011
Progress In Electromagnetics Research Letters, Vol. 23, 173 180, 2011 A DUAL-MODE DUAL-BAND BANDPASS FILTER USING A SINGLE SLOT RING RESONATOR S. Luo and L. Zhu School of Electrical and Electronic Engineering
More information