A WIDEBAND WIDE-STRIP DIPOLE ANTENNA FOR CIRCULARLY POLARIZED WAVE OPERATIONS
|
|
- Andrea Patrick
- 6 years ago
- Views:
Transcription
1 Prgress In Electrmagnetics Research, PIER 1, 69 82, 21 A WIDEBAND WIDE-STRIP DIPOLE ANTENNA FOR CIRCULARLY POLARIZED WAVE OPERATIONS L.-P. Chi and S.-S. Br Department f Electrical Engineering Feng-Chia University Taichung, Taiwan S.-M. Deng, C.-L. Tsai, P.-H. Juan, and K.-W. Liu Department f Electrnic Engineering Ming-Chuan University Taipei, Taiwan Abstract A thin diple antenna is a well-knwn antenna with linearly plarized wave peratin. In this wrk, a wide-strip diple antenna is prpsed fr circularly plarized wave peratins. T btain circularly plarized (CP) wave peratins, there are tw cnditins t be satisfied. One is that the antenna must have tw degenerated rthgnal mdes with different resnant frequencies. The ther is that the phase difference f tw rthgnal mdes is 9 degrees. T match the first cnditin, the slab width W is tuned t generate current distributins directed in tw different directins. In additin, the secnd cnditin is matched by asymmetric feeding pint by adjusting the verlapped square width C. The parametric study is cmpleted by the Ansft HFSS simulatr. Simulated results reveal that the CP wave is mainly influenced by the slab width W. The influences f the parameters C and d n the perfrmances f the prpsed antenna are als investigated in this paper. Taking 8 db as reference, there are tw wrking bands fr this prpsed antenna and the measured center frequencies are.66 GHz and 2.4 GHz, respectively, and the crrespnding bandwidths are.27 GHz (4%) and 1.78 GHz (87%), respectively. In additin, the measured center frequencies and bandwidths f the axial rati are 1.94 GHz and.53 GHz (27%), respectively. Crrespnding authr: L.-P. Chi (cp53122@ms23.hinet.net).
2 7 Chi et al. 1. INTRODUCTION Generally, a balanced-fed strip diple antenna r mnple antenna wns the linear plarizatin, mni-directinal radiatin pattern in the H-plane, and abut 2 dbi antenna gain. It has been used widely in the cnsumer prducts fr its gd characteristics and lw cst. Such facts have been cmprehensively reprted by sme papers [1 1]. On the ther hand, the circularly plarized (CP) antennas applied t the mdern cmmunicatin becme mre and mre ppular nt nly in the satellite cmmunicatin but als in the territrial cmmunicatins. Mrever, antennas with circular plarizatin can be used in radi frequency identificatin (RFID) systems and glbal psitining system (GPS) t reduce pwer lss resulted frm plarizatin mismatch. T btain circularly plarized wave peratins, there are tw cnditins t be satisfied. One is that the antenna must have tw degenerated rthgnal mdes with different resnant frequencies. The ther is that the phase difference f tw rthgnal mdes is 9 degrees. The ften utilized technique t generate CP wave in the micrstrip antenna is feeding asymmetrically in the micrstrip patch t generate tw degenerated mdes and t cmplete impedance matching [11 2]. Hwever, it is impssible t generate a circularly plarized wave in a single diple antenna because nly z-directed current distributin exists n the thin cylindrical cnductr. In recent, sme papers [21 23] try t intrduce circularly plarized radiatin by mdifying the cnventinal diple antenna. Tw diples [21, 22] are fed by tw transmissin lines, individually, with a ninety-degree phase difference and the same amplitude t prduce the circular plarizatin prperty. In paper [23], the circularly plarized peratin is achieved by cmbining a diple antenna with an artificial grund plane. In additin, the C-type feeding technique [24, 25] is a useful technique fr imprving the axial rati bandwith and quality f CP stacked micrstrip antennas. Hwever, t the authrs best knwledge, nly a few attempts have s far been made t generate circularly plarized wave by mdifying the cnventinal thin diple antenna. In this paper, the authrs try t mdify the riginal strip diple by increasing the width f the strip and bserve the behavir f plarizatin. The purpse f this prcess is t generate tw different directed current distributins, which are perpendicular t each ther. Finally, the authrs find that a wide-strip diple antenna can generate the circular plarizatin characteristics. Althugh a wide-strip diple antenna can generate the circularly plarized wave, we want t analyze and explain the reasn f it by the current distributins in the widestrip metal. Just fr balanced feed, nly ne strip s current distributin
3 Prgress In Electrmagnetics Research, PIER 1, is bserved. The current distributin can be divided int tw parts; ne is in the x-directin and the ther is in the y-directin. Owing t the asymmetric feed pint in the wide strip, this antenna can radiate circularly plarized wave. 2. ANTENNA CONFIGURATIONS A strip diple antenna with tw symmetric strips is shwn in Fig. 1. The length (in the x-directin) and width (in the y-directin) f the strip are L and W, respectively. There is a gap d (in the z-directin) between tw strips and the verlap dimensins between tw strips in the x- and y-directins are bth C. The Ansft HFSS high frequency simulatr based n the finite element methd is used as the simulatin tl. Gap surce is arranged between tw verlap regins. The feeding pint is at the center f the verlap regin. Frm the pint f view f simulatin, the antenna cnfiguratin with a gap surce is a symmetrical structure. It has a symmetrical radiatin patterns. But in L C W C W z y L L (a) x d L z C Figure 1. Gemetrical cnfiguratin f a wideband wide-strip diple antenna fr circularly plarized wave peratins: (a) Tp view; (b) side view. (b) x y
4 72 Chi et al. the real sample, a caxial cable is needed t feed the RF pwer int the tw strips. Hence, a rigid mini-caxial cable with a radius f.6 mm is adpted t feed int the tw strips. And then, ne strip is cnnected t the inner cnductr f the cable, and the ther strip is cnnected t the uter cnductr f the cable. Althugh the real sample is nt a gd balanced feed, the results f the reflectin cefficient and axial rati as well as the radiatin patterns match well with thse f the simulatin data. 3. RESULTS 3.1. Reflectin Cefficient After the ptimizatin f the antenna parameters, the ptimal data fr this structure are: L = 1 mm, W = 5 mm, d = 1 mm, C = 15 mm, respectively. The measured and simulated reflectin cefficients are shwn in Fig. 2. Taking 8 db as reference, there are tw wrking bands fr this prpsed antenna and the measured center frequencies are.66 GHz and 2.4 GHz, respectively, and the crrespnding bandwidths are.27 GHz (4%) and 1.78 GHz (87%), respectively. In additin, the simulated center frequencies are.68 GHz and 2.2 GHz, respectively, and the crrespnding bandwidths are.23 GHz (33%) and 1.75 GHz (86%), respectively. Bth simulated and measured reflectin cefficients are in gd cnsistency and the wide impedance bandwidth is achieved in this prpsed antenna. As shwn in Fig. 2, it seems that there exist multi bands in this prpsed Return Lss (db) Measurement Simulatin Figure 2. Measured and simulated return lss f the prpsed wide strip diple antenna with parameters: L = 1 mm, W = 5 mm, d = 1 mm, and C = 15 mm. Axial Rati (db) Measurement 11 1 Simulatin Figure 3. Measured and simulated axial ratis f the prpsed wide strip diple antenna with the same parameters in Fig. 2.
5 Prgress In Electrmagnetics Research, PIER 1, antenna. This fact results frm the reasn that there are multiple current paths in the wide strip Axial Rati T verify whether r nt the prpsed antenna can radiate circularly plarized wave, the axial ratis (AR) in the z-directin fr the simulated and measured data are illustrated in Fig. 3. As shwn in this figure, taking 3 db as reference, the measured and simulated center frequencies are 1.94 GHz and GHz, respectively, and the crrespnding AR s bandwidths are.53 GHz (27%) and.44 GHz (23%), respectively. Bth simulated and measured axial ratis match well and the prpsed antenna is a wide-ar bandwidth antenna due t the 27% axial rati bandwidth. Hence, the prpsed antenna wns bth wide impedance and wide axial rati bandwidths. As shwn in Fig. 3, the prpsed antenna can radiate circularly plarized wave in the z-directin. T realize the circularly plarized characteristics in different angles, the simulated axial ratis at 1.94 GHz in the x- z and y-z plane are shwn in Fig. 4. Taking 3 db as reference, the circularly plarized wave ranges frm 18 degrees t 6 degrees and frm 132 degrees t 16 degrees in the x-z plane. Mrever, the circularly plarized wave ranges frm 16 degrees t 14 degrees and frm 168 degrees t 162 degrees in the y-z plane. Owing t large acceptable angles fr circularly plarized radiatin, this prpsed antenna is suitable fr circularly plarized peratin y-z plane Axial Rati x-z plane Axial Rati Figure 4. Simulated axial ratis f the prpsed wide strip diple antenna at 1.94 GHz.
6 74 Chi et al Radiatin Patterns The measured and simulated radiatin patterns at 1.94 GHz in the y-z and x-z plane are shwn in Fig. 5 and Fig. 6, respectively. T bserve the circularly plarized radiatin, the radiatin patterns are divided int a right-hand circularly plarized (RHCP) wave and a left-hand circularly plarized (LHCP) wave. The tw figures indicate that the frward radiatin is dminated by LHCP and the backward radiatin is dminated by RHCP, respectively Measurement 15 RHCP LHCP Simulatin 15 Figure 5. Measured and simulated y-z plane radiatin patterns f the prpsed wide strip diple antenna at 1.94 GHz Measurement RHCP LHCP Simulatin 15 Figure 6. Measured and simulated x-z plane radiatin patterns f the prpsed wide strip diple antenna.
7 Prgress In Electrmagnetics Research, PIER 1, z 45 y x Figure 7. Current distributins at.65 GHz. ο z 45 y x ο ο ο Figure 8. Current distributins at 1.94 GHz Current Distributins In rder t analyze why the prpsed antenna has the circular plarizatin characteristics, the current distributins in nly ne metal strip at.65 GHz and 1.94 GHz are pltted in Fig. 7 and Fig. 8, respectively. As shwn in Fig. 7, mst f the current distributins are directed in the y directin fr fur different phase angles ωt =, 45, 9, and 135, respectively. Hence, the prpsed antenna generates linearly plarized radiatin in the lwer frequency.65 GHz. Hwever, at ωt = as shwn in Fig. 8 fr the upper frequency 1.94 GHz,
8 76 Chi et al. the current distributins can be divided int tw majr parts: ne is the x-directinal current flwing in the center strip t the end, and the ther is the y-directin current flwing frm the feeding pint t the end f width in the upper regin. But the dminant current distributin is directed in the x directin. The equivalent length f the current trace in the x-directin seems t be a half wavelength and that in the y-directin t be a quarter wavelength. At ωt = 45, the current distributins revealed in Fig. 8 bviusly wn tw dminant parts. Hwever, the current distributins at ωt = 9 shwn in Fig. 8 are dminant in the y-directin. Hence, Fig. 8 demnstrates that the currents are dminant in rthgnal current s directin with phase difference f ninety degrees. As a cnsequence, the circular plarized wave will be generated t prpagate int free space. Generally, the circularly plarized wave can be divided int tw types: ne is resnance mde and the ther is traveling-wave type. The prpsed antenna can be judged as the resnant type. It has tw resnance mdes: ne is half-wavelength resnance mde and the ther is a quarter-wavelength mde. Hence, the cncept f CP with tw resnance mdes (ne is half-wavelength and the ther is quarterwavelength) will give the antenna designer a very clear idea t design the wide-strip diple antenna with CP characteristics. As shwn in Fig. 8, it is bvius that the currents at any pint in the metal strip rtate clckwise s that the frward radiatin is dminated by LHCP and the backward radiatin is dminated by RHCP (see Sectin 3.3). 4. PARAMETRIC STUDY AND ANALYSIS 4.1. The Influences f the Slab Width W Althugh we have knwn the cncept f hw t generate the CP wave in the prpsed antenna, we still need t study and analyze the influences f the antenna parameters (such as the width and length f the strip, the feeding pint, and the verlap between bth metal strips) n the antenna characteristics such as impedance bandwidth and AR bandwidth. The parametric study is cmpleted by the Ansft HFSS simulatr. Firstly, the same parameters are taken as thse in Fig. 2 except the parameter W. If the slab width W is increased, the return lss shwn in Fig. 9 is imprved, which imply the better impedance matching is btained. In additin, Fig. 1 indicates that the increasing f the slab width W results in the circularly plarized radiatin. The cnventinal diple antenna can be regarded as a special case f the prpsed antenna if the slab width W is appraching zer. The cnventinal diple antenna radiates linearly plarized wave, because the current distributins n the cnductr are nly directed in a single
9 Prgress In Electrmagnetics Research, PIER 1, directin. Hwever, there are tw rthgnal current cmpnents n the prpsed antenna and the circularly plarized wave can be btained by increasing the slab width W. Mrever, the perfrmances f different slab width W are shwn in Table 1. The symbl NA in the Table 1 dentes that the axial-ratis are greater than 3 db fr all frequencies. Return Lss (db) W=5 mm W=4 mm W=3 mm Figure 9. Simulated return lss fr different slab width W. Axial Rati (db) W=5 mm W=4 mm W=3 mm Figure 1. Simulated axial ratis fr different slab width W. Table 1. The perfrmances f the prpsed antenna in the variatin f the parameter W. W (mm) AR Bandwidth (MHz) AR Center 3 NA NA NA 4 NA NA NA Bandwidth (%) Table 2. The perfrmances f the prpsed antenna in the variatin f the parameter C. C (mm) AR Bandwidth (MHz) AR Center Bandwidth (%)
10 78 Chi et al The Influences f the Overlapped Square Width C In this subsectin, the same parameters are taken as thse in Fig. 2 except the parameter C. As shwn in Fig. 11, the impedance matching is imprved if the verlapped square width C is increased. In additin, Fig. 12 and Table 2 indicate that the increasing f the verlapped square width C has little influence n the axial rati. Return Lss (db) C=15 mm C=1 mm -25 C=5 mm Figure 11. Simulated return lss fr different verlapped square width C. Axial Rati (db) C=15 mm 12 C=1 mm 11 1 C=5 mm Figure 12. Simulated axial ratis fr different verlapped square width C. Return Lss (db) d=1 mm d=12 mm -3 d=5 mm Figure 13. Simulated return lss fr different prt length d. Axial Rati (db) d=1 mm d=12 mm d=5 mm Figure 14. Simulated axial ratis fr different prt length d The Influences f the Prt Length d In this subsectin, the same parameters are taken as thse in Fig. 2 except the parameter d. As shwn in Fig. 13, the prt length d can be
11 Prgress In Electrmagnetics Research, PIER 1, Table 3. The perfrmances f the prpsed antenna in the variatin f the parameter d. d (mm) AR Bandwidth (MHz) AR Center Bandwidth (%) tuned t imprve the impedance matching. In additin, Fig. 14 and Table 3 indicate that the increasing f the prt length d can widen the AR s bandwidth. 5. CONCLUSION Thin diple antenna is a well-knwn antenna with linearly plarized wave peratins. In this paper, a wide-strip diple antenna is prpsed fr circularly plarized wave peratins. T btain circularly plarized wave peratins, there are tw cnditins t be satisfied. One is that the antenna must have tw degenerated rthgnal mdes with different resnant frequencies. The ther is that the phase difference f tw rthgnal mdes is 9 degrees. T match the first cnditin, the slab width W is tuned t generate current distributins directed in tw different directins. In additin, the secnd cnditin is matched by asymmetric feeding pint by adjusting the verlapped square width C. The parametric study is cmpleted by the Ansft HFSS simulatr. Simulated results reveal that the CP wave is mainly influenced by the slab width W. The studies f parameters C and d are als invested in this paper. There are tw wrking bands fr this prpsed antenna and the measured center frequencies are.66 GHz and 2.4 GHz, respectively, and the crrespnding bandwidths are.27 GHz (4%) and 1.78 GHz (87%), respectively. In additin, the measured center frequencies and bandwidth f axial ratis are 1.94 GHz and.53 GHz (27%), respectively. ACKNOWLEDGMENT The authrs are indebted t Jia-Rung Lu fr his assistance in simulatin and t Chung-sheng institute f Science and Technlgy fr financial and measurement supprt.
12 8 Chi et al. REFERENCES 1. Tsai, C.-L., S.-M. Deng, T.-W. Chen, and Y.-C. Chang, A flded thin-wire mnple antenna laded by a rectangular dielectric resnatr, Micrwave Opt. Tech. Lett., Vl. 5, N. 4, , Li, X., L. Yang, S.-X. Gng, Y.-J. Yang, and J.-F. Liu, A cmpact flded printed diple antenna fr UHF RFID reader, Prgress In Electrmagnetics Research Letters, Vl. 6, 47 54, Li, X., L. Yang, S.-X. Gng, and Y.-J. Yang, Dual-band and wideband design f a printed diple antenna integrated with dual-band balun, Prgress In Electrmagnetics Research Letters, Vl. 6, , Chen, G.-Y. and J.-S. Sun, A printed diple antenna with micrstrip tapered balun, Micrwave Opt. Tech. Lett., Vl. 4, N. 4, , Feb Faraji, D. and M. N. Azarmanesh, A nvel mdified headshaped mnple antenna fr UWB applicatins, Jurnal f Electrmagnetic Waves and Applicatins, Vl. 23, N. 1, , Wang, F. J. and J. S. Zhang, Wideband printed diple antenna fr multiple wireless services, Jurnal f Electrmagnetic Waves and Applicatins, Vl. 21, N. 11, , Chen, S.-Y., Y.-C. Chen, and P. Hsu, CPW-fed aperture-cupled slt diple antenna fr tri-band peratin, IEEE Antennas and Wireless Prpagatin Letters, Vl. 7, , Danesfahani, R., L. Asadpr, and S. Sltani, A small UWB CPW-fed mnple antenna with variable ntched bandwidth, Jurnal f Electrmagnetic Waves and Applicatins, Vl. 23, N. 8 9, , Tseng, C.-F. and C.-L. Huang, A wideband crss mnple antenna, IEEE Trans. Antennas and Prpag., Vl. 57, N. 8, , Mazinani, S. M. and H. R. Hassani, A nvel mnidirectinal bradband planar mnple antenna with varius lading plate shapes, Prgress In Electrmagnetics Research, PIER 97, , Tsai, C.-L., S.-M. Deng, C.-K. Yeh, and S.-S. Br, A nvel shrted rectangular-lp antenna fr circularly plarized wave peratins, Jurnal f Electrmagnetic Waves and Applicatins, Vl. 23, N. 1, , Tsai, C.-L., S.-M. Deng, C.-H. Tseng, and S.-S. Br, Antennas
13 Prgress In Electrmagnetics Research, PIER 1, with tw shrted rectangular-ring slts cupled by micrstrip line fr the ppsite sense CP in the wide-band peratins, Jurnal f Electrmagnetic Waves and Applicatins, Vl. 23, N. 1, , Tsai, C. L., S.-M. Deng, and L.-W. Liu, A cmpact shrted rectangular-ring slt antenna fed by a CPW fr circularly plarized wave peratins in the WLAN 2.4 GHz band, Micrwave Opt. Tech. Lett., Vl. 51, N. 9, , Tsai, C. L., S.-M. Deng, T.-W Chen, and L.-W. Liu, Circularly plarized dielectric resnatr-laded circular micrstrip patch antennas fr WLAN 2.4 GHz applicatins, Micrwave Opt. Tech. Lett., Vl. 51, N. 6, , Eldesuki, E. M. A., K. F. A. Hussein, and A. M. El-Nadi, Circularly plarized arrays f cavity backed slt antennas fr X-band satellite cmmunicatins, Prgress In Electrmagnetics Research B, Vl. 9, , Heidari, A. A., M. Heyrani, and M. Nakhkash, A dual-band circularly plarized stub laded micrstrip patch antenna fr GPS applicatins, Prgress In Electrmagnetics Research, PIER 92, , Kasabegudar, V. G. and K. J. Viny, A bradband suspended micrstrip antenna fr circular Plarizatin, Prgress In Electrmagnetics Research, PIER 9, , Zainud-Deen, S. H., H. A. El-Azem Malhat, and K. H. Awadalla, A single-feed cylindrical superquadric dielectric resnatr antenna fr circular plarizatin, Prgress In Electrmagnetics Research, PIER 85, , Wang, C.-J. and C.-H. Lin, A circularly plarized quasi-lp antenna, Prgress In Electrmagnetics Research, PIER 84, , Gu, Y.-X., L. Bian, and X. Q. Shi, Bradband circularly plarized annular-ring micrstrip antenna, IEEE Trans. Antennas and Prpag., Vl. 57, N. 8, , Yn, W.-S., S.-M. Han, J.-W. Baik, S. Py, J. Lee, and Y.-S. Kim, Crssed diple antenna with switchable circular plarisatin sense, Electrnics Letters, Vl. 45, N. 14, , Baik, J.-W., K.-J. Lee, W.-S. Yn, T.-H. Lee, and Y.- S. Kim, Circularly plarised printed crssed diple antennas with bradband axial rati, Electrnics Letters, Vl. 44, N. 13, , 28.
14 82 Chi et al. 23. Yang, F. and R.-S. Yahya, A lw prfile single diple antenna radiating circularly plarized waves, IEEE Trans. Antennas and Prpag., Vl. 53, N. 9, , Nasimuddin, E. K. P. and A. K. Verma, Wideband high-gain circularly plarized stacked micrstrip antennas with an ptimized C-type feed and a shrt hrn, IEEE Trans. Antennas and Prpag., Vl. 56, N. 2, , Nasimuddin, E. K. P. and A. K. Verma, Wideband circularly plarized stacked micrstrip antennas, IEEE Antennas and Wireless Prpagatin Letters, Vl. 6, 21 24, 27.
Broadband Circularly Polarized Slot Antenna Array Using a Compact Sequential-Phase Feeding Network
Prgress In Electrmagnetics Research C, Vl. 47, 173 179, 214 Bradband Circularly Plarized Slt Antenna Array Using a Cmpact Sequential-Phase Feeding Netwrk Ping Xu *, Zehng Yan, Tianling Zhang, and Xiaqiang
More informationDual Band Microstrip Patch Antenna for Short Range Wireless Communications
IJEE Vlume-6 Number-1 Jan -June 2014 pp. 51-55 (ISSN: 0973-7383) Dual Band Micrstrip Patch Antenna fr Shrt Range Wireless Cmmunicatins S.Princy 1,A.C.Shagar 2 1 P.G Student, M.E Cmmunicatin Systems, Sethu
More informationINLINE TE 01δ MODE DIELECTRIC-RESONATOR FIL- TERS WITH CONTROLLABLE TRANSMISSION ZERO FOR WIRELESS BASE STATIONS
Prgress In Electrmagnetics Research Letters, Vl. 38, 11 11, 213 INLINE TE 1δ MODE DIELECTRIC-RESONATOR FIL- TERS WITH CONTROLLABLE TRANSMISSION ZERO FOR WIRELESS BASE STATIONS Xia Ouyang * and B-Yng Wang
More information5. Experimental Results
5. xperimental Results Prttype mdels f the duble spherical helix the hemispherical helix studied in Sectins 4.3.2 4.4 were cnstructed measured. Fabricatin f these antennas measurement f their radiatin
More informationAn Embedded RF Lumped Element Hybrid Coupler Using LTCC Technology
An Embedded RF Lumped Element Hybrid Cupler Using LTCC Technlgy Ke-Li Wu, Chi-Kit Yau and Kwk-Keung M. Cheng Dept. f Electrnics Eng., The Chinese University f Hng Kng, NT., Hng Kng, PRC E-mail: klwu@ee.cuhk.edu.hk
More informationA COMPACT, LOW-PROFILE, ULTRA-WIDEBAND AN- TENNA UTILIZING DUAL-MODE COUPLED RADIA- TORS
Prgress In Electrmagnetics Research B, Vl. 50, 235 251, 2013 A COMPACT, LOW-PROFILE, ULTRA-WIDEBAND AN- TENNA UTILIZING DUAL-MODE COUPLED RADIA- TORS Meng Li *, Yazid Yusuf, and Nader Behdad Department
More informationEnhanced Balance Bandwidth Quadrature Coupler Using Parallel Coupled Microstrip Lines
VOL.6, NO., 211 228 Enhanced Balance Bandwidth Quadrature Cupler Using Parallel Cupled Micrstrip Lines Vamsi Krishna Velidi, Girja Shankar and Subrata Sanyal Department f Electrnics and Electrical Cmmunicatin
More informationA Novel Compact Planar Phase Shifter with a Microstrip Radial Stub
Sensrs & Transducers, Vl. 179, Issue 9, September 214, pp. 21-26 Sensrs & Transducers 214 by IFSA Publishing, S. L. http://www.sensrsprtal.cm A Nvel Cmpact Planar Phase Shifter with a Micrstrip Radial
More informationCircularly Polarized Dodecagonal Patch Antenna with Polygonal Slot for RFID Applications
Prgress In Electrmagnetics Research C, Vl. 61, 9 15, 2016 Circularly Plarized Ddecagnal Patch Antenna with Plygnal Slt fr RFID Applicatins Karavilavadakkethil C. Prakash *, Sumitha Mathew, Ramachandran
More informationDesign and Simulation of Ultra Wide-band Antenna for High Data Rate Applications
Design and Simulatin f Ultra Wide-band Antenna fr High Data Rate Applicatins Ramaswamy Karthikeyan B1, Gvind R.Kadambi2 1 M.Sc (Engg.) student, 2 Prfessr and Dean-Research, Wireless and Optical Cmmunicatin
More informationSTUDIES OF POWER-COMBINING OF OPEN SLOT ANTENNA ARRAYS
Prgress In Electrmagnetics Research, Vl. 120, 423 437, 2011 STUDIES OF POWER-COMBINING OF OPEN SLOT ANTENNA ARRAYS C.-J. Wang and Y. Dai * Department f Electrical Engineering, Natinal University f Tainan,
More informationA CIRCULARLY POLARIZED QUASI-LOOP ANTENNA
Progress In Electromagnetics Research, PIER 84, 333 348, 28 A CIRCULARLY POLARIZED QUASI-LOOP ANTENNA C.-J. Wang and C.-H. Lin Department of Electronics Engineering National University of Tainan Tainan
More informationUnequal, Equi-phase, 1:N Power Divider Based on a Sectoral Waveguide
17 INTERNATIONAL JOURNAL OF MICROWAVE AND OPTICAL TECHNOLOGY, Unequal, Equi-phase, 1:N Pwer Divider Based n a Sectral Waveguide A. Mestezk and H. Matzner Department f Cmmunicatin Engineering Hln Institute
More informationEE 3323 Electromagnetics Laboratory
EE 3323 Electrmagnetics Labratry Experiment #1 Waveguides and Waveguide Measurements 1. Objective The bjective f Experiment #1 is t investigate waveguides and their use in micrwave systems. Yu will use
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 informationSINGLE-FEEDING CIRCULARLY POLARIZED TM 21 - MODE ANNULAR-RING MICROSTRIP ANTENNA FOR MOBILE SATELLITE COMMUNICATION
Progress In Electromagnetics Research Letters, Vol. 20, 147 156, 2011 SINGLE-FEEDING CIRCULARLY POLARIZED TM 21 - MODE ANNULAR-RING MICROSTRIP ANTENNA FOR MOBILE SATELLITE COMMUNICATION X. Chen, G. Fu,
More informationPower Splitters & Dividers
Pwer Splitters & Dividers Bradband Frequency Range - dc t 40 GHz Widest Selectin f cnnectr types & Frequency xpress shipment available n select mdels. 4-Way Designs Available High Quality Cnstructin &
More informationSynthesis of a Broadband Rat-Race Hybrid Using Transmission Lines and Lumped-Element Components
Prgress In Electrmagnetics Research Letters, Vl. 71, 53 6, 217 Synthesis f a Bradband Rat-Race Hybrid Using Transmissin Lines and Lumped-Element Cmpnents Ry Ueda * and Hitshi Hayashi Abstract This letter
More informationOptimization of Monopole Four-Square Array Antenna Using a Decoupling Network and a Neural Network to Model Ground Plane Effects
Optimizatin f Mnple Fur-Square Array Antenna Using a ecupling Netwrk and a Neural Netwrk t Mdel Grund Plane Effects Pedram azdanbakhsh, Klaus Slbach University uisburg-essen, Hchfrequenztechnik, Bismarckstr.8,
More informationLow-Profile Wideband Circularly Polarized Patch Antenna Using Asymmetric Feeding
Progress In Electromagnetics Research Letters, Vol. 48, 21 26, 2014 Low-Profile Wideband Circularly Polarized Patch Antenna Using Asymmetric Feeding Yang-Tao Wan *, Fu-Shun Zhang, Dan Yu, Wen-Feng Chen,
More informationDISTRIBUTION STATEMENT A Approved for Public Release Distribution Unlimited
Serial Number 0973.62 Filing Date 3 Octber 998 Inventr Michael J. Jsvpenk NOTICE The abve identified patent applicatin is available fr licensing. Requests fr infrmatin shuld be addressed t: OFFICE OF NAVAL
More informationA Compact Wideband Slot Antenna for Universal UHF RFID Reader
Progress In Electromagnetics Research Letters, Vol. 7, 7, 8 A Compact Wideband Slot Antenna for Universal UHF RFID Reader Waleed Abdelrahim and Quanyuan Feng * Abstract A compact wideband circularly polarized
More informationStudy of Dipole Antenna Height for Radio Telescope According to Baghdad Location
Study f Diple Antenna Height fr Radi Telescpe Accrding t Baghdad Lcatin Kamal M. Abd 1, Mretadha J. Kadhim and Zinah F. Kadhim 3 1 Department f Astrnmy and Space, Cllege f Science, University f Baghdad,
More informationA WIDEBAND TWIN-DIAMOND-SHAPED CIRCULARLY POLARIZED PATCH ANTENNA WITH GAP-COUPLED FEED
Progress In Electromagnetics Research, Vol. 139, 15 24, 2013 A WIDEBAND TWIN-DIAMOND-SHAPED CIRCULARLY POLARIZED PATCH ANTENNA WITH GAP-COUPLED FEED Xuehui Li *, Xueshi Ren, Yingzeng Yin, Lu Chen, and
More informationWe are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists. International authors and editors
We are IntechOpen, the wrld s leading publisher f Open Access bks Built by scientists, fr scientists 3,500 108,500 1.7 M Open access bks available Internatinal authrs and editrs Dwnlads Our authrs are
More informationFirst-Order Minkowski Fractal Circularly Polarized Slot Loop Antenna with Simple Feeding Network for UHF RFID Reader
Progress In Electromagnetics Research Letters, Vol. 77, 89 96, 218 First-Order Minkowski Fractal Circularly Polarized Slot Loop Antenna with Simple Feeding Network for UHF RFID Reader Xiuhui Yang 1, Quanyuan
More informationDesign and Implementation of a Novel Directional Coupler for UHF RFID Reader
22 ELETRONIS, VOL. 20, NO. 1, JUNE 2016 Design and Implementatin f a Nvel Directinal upler fr UHF RFID Reader Jianxing Li, Shanlin Sng, Xiayu hen, Hua Nian and Weiguang Shi Abstract The directinal cupler
More informationA NOVEL LOOP-LIKE MONOPOLE ANTENNA WITH DUAL-BAND CIRCULAR POLARIZATION
Progress In Electromagnetics Research C, Vol. 45, 179 19, 213 A NOVEL LOOP-LIKE MONOPOLE ANTENNA WITH DUAL-BAND CIRCULAR POLARIZATION Kang Ding 1, *, Tong-Bin Yu 1, De-Xin Qu 1, and Cheng Peng 1 Institute
More informationPlanar Integrated Holographic Antenna with Substrate Integrated Waveguide
Planar Integrated Hlgraphic Antenna with Substrate Integrated Waveguide Xiapeng Liu, Yunhua Zhang*, Ke Chen, Guqiang Zhu Schl f Electrnic Infrmatin, Wuhan University, Wuhan 430072, Wuhan, China *Crrespnding
More informationProgress In Electromagnetics Research Letters, Vol. 15, , 2010
Progress In Electromagnetics Research Letters, Vol. 15, 163 173, 21 T-STRIP FED PATCH ANTENNA WITH RECONFIG- URABLE POLARIZATION S.-Y. Lin Department of Electronics Engineering Cheng Shiu University Kaohsiung
More informationInsertion Loss (db)
Optical Interleavers Optplex s Optical Interleaver prducts are based n ur patented Step-Phase Interfermeter design. Used as a DeMux (r Mux) device, an ptical interleaver separates (r cmbines) the Even
More informationFXP611 Flexible PCB Antenna with Cable Application Note
FXP611 Flexible PCB Antenna with Cable Applicatin Nte APN-14-8-001/A/MB Page 1 f 6 1. BASICS A Flexible PCB antenna with cable is a very flexible, lw prfile, highly reliable, and ecnmical slutin widely
More informationPrinted Compact Lens Antenna for UHF Band Applications
Prgress In Electrmagnetics Research C, Vl. 6,, 6 Printed Cmpact Lens Antenna fr UHF Band Applicatins Kyadan Krth Ajith * and Amitabha Bhattacharya Abstract A new micrwave lens antenna suitable fr ultra-high
More informationInput-Series Two-Stage DC-DC Converter with Inductor Coupling
Input-Series w-stage DC-DC Cnverter with Inductr Cupling ing Qian Wei Sng Brad Lehman Nrtheastern University Dept. Electrical & Cmputer Engineering Bstn MA 0 USA Abstract: his paper presents an input-series
More informationBroadband Circular Polarized Antenna Loaded with AMC Structure
Progress In Electromagnetics Research Letters, Vol. 76, 113 119, 2018 Broadband Circular Polarized Antenna Loaded with AMC Structure Yi Ren, Xiaofei Guo *,andchaoyili Abstract In this paper, a novel broadband
More informationWIDEBAND CIRCULARLY POLARIZED SUSPENDED PATCH ANTENNA WITH INDENTED EDGE AND GAP- COUPLED FEED
Progress In Electromagnetics Research, Vol. 135, 151 159, 213 WIDEBAND CIRCULARLY POLARIZED SUSPENDED PATCH ANTENNA WITH INDENTED EDGE AND GAP- COUPLED FEED Jingya Deng 1, 2, *, Lixin Guo 1, Tianqi Fan
More informationHigh Efficiency Frequency Tunable Inverse Class-E Amplifier in VHF Band
High Efficiency Frequency Tunable Inverse Class-E Amplifier in VHF Band Kumh Natinal Institute f Technlgy, 1 Yangh-Dng, Gumi, Gyungbuk, 730-701, Krea yungk@kumh.ac.kr Abstract This paper prpses the use
More informationNEGATIVE-REFRACTIVE-INDEX TRANSMISSION-LINE METAMATERIALS AND ENABLING MICROWAVE DEVICES
NEGATIVE-REFRACTIVE-INDEX TRANSMISSION-LINE METAMATERIALS AND ENABLING MICROWAVE DEVICES G.V. Eleftheriades Department f Electrical & Cmputer Engineering University f Trnt 10 King s Cllege Rad Trnt, Ontari,
More informationSECTION 5: OPTICAL AMPLIFIERS
SECTION 5: OPTICAL AMPLIFIERS 1 OPTICAL AMPLIFIERS In rder t transmit signals ver lng distances (>100 km) it is necessary t cmpensate fr attenuatin lsses within the fiber. Initially this was accmplished
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 informationModels 7008, 7034, 7035, 7035R & 7041 Planar Blind-Mate Connectors, dc to 40.0 GHz
Mdels 7008, 7034, 7035, 7035R & 7041 Planar Blind-Mate Cnnectrs, dc t 40.0 GHz Threadless Cnnectr System / S pace Saving / L ng Life Features Threadless Cnnectr Mating - This blind-mate cnnectr series
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 Dual-Band Slot Antenna with Circular Polarization
Progress In Electromagnetics Research Letters, Vol. 61, 77 83, 2016 A CPW-Fed Dual-Band Slot Antenna with Circular Polarization Yonghao Xin, Quanyuan Feng *,andjuntao Abstract In this paper, a coplanar
More informationA Compact Wideband Circularly Polarized L-Slot Antenna Edge-Fed by a Microstrip Feedline for C-Band Applications
Progress In Electromagnetics Research Letters, Vol. 65, 95 102, 2017 A Compact Wideband Circularly Polarized L-Slot Antenna Edge-Fed by a Microstrip Feedline for C-Band Applications Mubarak S. Ellis, Jerry
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 informationWide-Beamwidth Circularly Polarized Antenna and Its Application in a Sequential-Rotation Array with Enhanced Bandwidth
Progress In Electromagnetics Research C, Vol. 67, 127 134, 2016 Wide-Beamwidth Circularly Polarized Antenna and Its Application in a Sequential-Rotation Array with Enhanced Bandwidth Li Jiang *, Fu-Shun
More informationCIRCULARLY POLARIZED PATCH ANTENNA WITH A STACKED SLOT-RING
Progress In Electromagnetics Research Letters, Vol. 36, 163 170, 2013 CIRCULARLY POLARIZED PATCH ANTENNA WITH A STACKED SLOT-RING The-Nan Chang 1, * and Jyun-Ming Lin 2 1 Department of Electrical Engineering,
More informationCompact Wide-Beam Circularly Polarized Antenna with Stepped Arc-Shaped Arms for CNSS Application
Progress In Electromagnetics Research C, Vol. 71, 141 148, 2017 Compact Wide-Beam Circularly Polarized Antenna with Stepped Arc-Shaped Arms for CNSS Application Can Wang *, Fushun Zhang, Fan Zhang, Yali
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 informationInternational Journal for Research in Applied Science & Engineering Technology (IJRASET) Circular Microstrip Patch Antenna for RFID Application
Circular Microstrip Patch Antenna for RFID Application Swapnali D. Hingmire 1, Mandar P. Joshi 2, D. D. Ahire 3 1,2,3 E&TC Department, 1 R. H. Sapat COE, Nashik, 2,3 Matoshri COE, Nashik, Savitri Bai Phule
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 informationAdaptive Antenna Control System for RFID Reader
daptive ntenna Cntrl System fr RFID Reader P. Salnen, M. Keskilammi, L. Sydänheim Institute f Electrnics Tampere University f Technlgy P.O. Bx 69, FIN-33101 Tampere FINLND bstract: - Spatial filtering
More informationAnalysis of Mid-range Wireless Power Transfer Circuits Based on Reactance Function and Image Impedance
Electrical and Electrnic Engineering 07 7(3): 77-84 DOI: 0.593/j.eee.070703.0 Analysis f Mid-range Wireless Pwer Transfer Circuits Based n Reactance Functin and Image Impedance Yasuyuki Okumura * Masahir
More informationFractal-Based Triangular Slot Antennas with Broadband Circular Polarization for RFID Readers
Progress In Electromagnetics Research C, Vol. 51, 121 129, 2014 Fractal-Based Triangular Slot Antennas with Broadband Circular Polarization for RFID Readers Jianjun Wu *, Xueshi Ren, Zhaoxing Li, and Yingzeng
More informationRiverSurveyor S5/M9 & HydroSurveyor Second Generation Power & Communications Module (PCM) Jan 23, 2014
SnTek, a Xylem brand 9940 Summers Ridge Rad, San Dieg, CA 92121-3091 USA Telephne (858) 546-8327 Fax (858) 546-8150 E-mail: inquiry@sntek.cm Internet: http://www.sntek.cm RiverSurveyr S5/M9 & HydrSurveyr
More informationSTUDY ON THE PLANAR CIRCULARLY POLARIZED ANTENNAS WITH SWASTIKA SLOT
Progress In Electromagnetics Research C, Vol. 39, 11 24, 213 STUDY ON THE PLANAR CIRCULARLY POLARIZED ANTENNAS WITH SWASTIKA SLOT Upadhyaya N. Rijal, Junping Geng *, Xianling Liang, Ronghong Jin, Xiang
More informationA Low Cost DC-DC Stepping Inductance Voltage Regulator With Fast Transient Loading Response
A w Cst DC-DC Stepping Inductance Vltage Regulatr With Fast Transient ading Respnse.K. Pn C.P. iu M.H. Png The Pwer Electrnics abratry, Department f Electrical & Electrnic Engineering The University f
More informationTriple Band-Notched UWB Planar Monopole Antenna Using Triple-Mode Resonator
Progress In Electromagnetics Research C, Vol. 57, 117 125, 215 Triple Band-Notched UWB Planar Monopole Antenna Using Triple-Mode Resonator Huaxia Peng 1, 3, Yufeng Luo 1, 2, *, and Zhixin Shi 1 Abstract
More informationNo Frequency Reuse: Wearable Steerable MIMO Microstrip Antenna Array for Mobile Ad Hoc Applications
British Jurnal f Applied Science & Technlgy 4(17): 477-488, 014 SCIENCEDOMAIN internatinal www.sciencedmain.rg N Frequency Reuse: Wearable Steerable MIMO Micrstrip Antenna Array fr Mbile Ad Hc Applicatins
More informationKurvinen, Joni; Lehtovuori, Anu; Mai, Jianchun; Wang, Chao; Viikari, Ville Metal-covered handset with LTE MIMO, Wi-Fi MIMO, and GPS antennas
Pwered by TCPDF (www.tcpdf.rg) This is an electrnic reprint f the riginal article. This reprint may differ frm the riginal in paginatin and typgraphic detail. Kurvinen, Jni; Lehtvuri, Anu; Mai, Jianchun;
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 informationPROBABILITY OF DETECTION OF FLAWS IN A GAS TURBINE ENGINE. Gary L. Burkhardt and R.E. Beissner
PROBABILITY OF DETECTION OF FLAWS IN A GAS TURBINE ENGINE COMPONENT USING ELECTRIC CURRENT PERTURBATION Gary L. Burkhardt and R.E. Beissner Suthwest Research Institute 6220 CUlebra Rad San Antni, Texas
More informationHigh Step up Switched Capacitor Inductor DCDC Converter for UPS System with Renewable. Energy Source
nternatinal Jurnal f Electrnics and Electrical Engineering Vl. 3, N. 2, April, 25 High Step up Switched Capacitr nductr DCDC fr UPS System with Renewable Energy Surce Maheshkumar. K and S. Ravivarman K.S.
More informationA CORNER-FED SQUARE RING ANTENNA WITH AN L-SHAPED SLOT ON GROUND PLANE FOR GPS APPLICATION
Progress In Electromagnetics Research C, Vol. 41, 111 120, 2013 A CORNER-FED SQUARE RING ANTENNA WITH AN L-SHAPED SLOT ON GROUND PLANE FOR GPS APPLICATION Bau-Yi Lee 1, *, Wen-Shan Chen 2, Yu-Ching Su
More informationLINE POWER SUPPLIES Low-Loss Supplies for Line Powered EnOcean Modules
Lw-Lss Supplies fr Line Pwered EnOcean Mdules A line pwer supply has t ffer the required energy t supply the actuatr electrnic and t supply the EnOcean TCM/RCM radi cntrl mdule. This paper cntains sme
More informationCPW-Fed Circularly Polarized Slot Antenna with Elliptical-Shaped Patch for UWB Applications
Journal of Communication Engineering, Vol. 6, No. 2, July-December 2017 1 CPW-Fed Circularly Polarized Slot Antenna with Elliptical-Shaped Patch for UWB Applications S. Mirzaee and Y. Zehforoosh Department
More informationDesign of Rectangular-Cut Circular Disc UWB Antenna with Band-Notched Characteristics
Design of Rectangular-Cut Circular Disc UWB Antenna with Band-Notched Characteristics Swapnil Thorat PICT, Pune-411043,India Email:swapnil.world01@gmail.com Raj Kumar DIAT (Deemed University), Girinagar,
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 informationCircular Polarized Dielectric Resonator Antenna for Portable RFID Reader Using a Single Feed
International Journal of Radio Frequency Identification and Wireless Sensor Networks ARTICLE Circular Polarized Dielectric Resonator Antenna for Portable RFID Reader Using a Single Feed Regular Paper Hend
More informationA NEW TRIPLE BAND CIRCULARLY POLARIZED SQUARE SLOT ANTENNA DESIGN WITH CROOKED T AND F-SHAPE STRIPS FOR WIRELESS APPLICATIONS
Progress In Electromagnetics Research, Vol. 121, 1 18, 2011 A NEW TRIPLE BAND CIRCULARLY POLARIZED SQUARE SLOT ANTENNA DESIGN WITH CROOKED T AND F-SHAPE STRIPS FOR WIRELESS APPLICATIONS S. A. Rezaeieh
More informationDual-Band Circularly Polarized Cavity-Backed Annular Slot Antenna for GPS Receiver REFERENCES
2076 IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 60, NO. 4, APRIL 2012 dual band-reject mechanism with stubs was analyzed thoroughly. Furthermore, it can be used with other resonant or non-resonant
More informationPhysics 401 Classical Physics Laboratory. Experiment 44 MICROWAVE CAVITIES. Table of Contents
University f Illinis at Urbana-Champaign Physics 401 Classical Physics abratry Department f Physics Experiment 44 MICROWAVE CAVITIES Table f Cntents Subject Page References------------------------------------------------------------------------------------------------------
More informationBROADBAND BALUN AND PHASE NOISE MEASUREMENT SYSTEM DESIGN FOR RFIC TESTING
BROADBAND BALUN AND PHASE NOISE MEASUREMENT SYSTEM DESIGN FOR RFIC TESTING By JAE SHIN IM A DISSERTATION PRESENTED TO THE GRADUATE SCHOOL OF THE UNIVERSITY OF FLORIDA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS
More informationANALYSIS, MODELING AND SIMULATION OF RING RESONATORS AND THEIR APPLICATIONS TO FILTERS AND OSCILLATORS. A Dissertation LUNG-HWA HSIEH
ANALYSIS, MODELING AND SIMULATION OF RING RESONATORS AND THEIR APPLICATIONS TO FILTERS AND OSCILLATORS A Dissertatin by LUNG-HWA HSIEH Submitted t the Office f Graduate Studies f Texas A&M University in
More informationX. Li, L. Yang, S.-X. Gong, and Y.-J. Yang National Key Laboratory of Antennas and Microwave Technology Xidian University Xi an, Shaanxi, China
Progress In Electromagnetics Research Letters, Vol. 6, 99 16, 29 BIDIRECTIONAL HIGH GAIN ANTENNA FOR WLAN APPLICATIONS X. Li, L. Yang, S.-X. Gong, and Y.-J. Yang National Key Laboratory of Antennas and
More informationNovel Approach to Design of a Class-EJ Power Amplifier Using High Power Technology F. Rahmani, F. Razaghian, A. R. Kashaninia
Nvel Apprach t Design f a Class-EJ Pwer Amplifier Using High Pwer Technlgy F. Rahmani, F. Razaghian, A. R. Kashaninia Abstract This article prpses a new methd fr applicatin in cmmunicatin circuit systems
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 informationACircularlyPolarizedPlanarMonopoleAntennawithWideARBandwidthUsingaNovelRadiatorGroundStructure
Global Journal of Researches in Engineering: F Electrical and Electronics Engineering Volume 17 Issue 3 Version 1.0 Type: Double Blind Peer Reviewed International Research Journal Publisher: Global Journals
More informationDesign of a Novel Compact Cup Feed for Parabolic Reflector Antennas
Progress In Electromagnetics Research Letters, Vol. 64, 81 86, 2016 Design of a Novel Compact Cup Feed for Parabolic Reflector Antennas Amir Moallemizadeh 1,R.Saraf-Shirazi 2, and Mohammad Bod 2, * Abstract
More informationDesign and Application of Triple-Band Planar Dipole Antennas
Journal of Information Hiding and Multimedia Signal Processing c 2015 ISSN 2073-4212 Ubiquitous International Volume 6, Number 4, July 2015 Design and Application of Triple-Band Planar Dipole Antennas
More informationWIDE BEAMWIDTH QUADIFILAR HELIX ANTENNA WITH CROSS DIPOLES
Progress In Electromagnetics Research C, Vol. 40, 229 242, 2013 WIDE BEAMWIDTH QUADIFILAR HELIX ANTENNA WITH CROSS DIPOLES Wei Xin Lin and Qing Xin Chu * School of Electronic and Information Engineering,
More informationDesign and Comparative Analysis of Rectangular and Square Log Periodic Array Microstrip Patch Antenna
IPASJ Internatinal Jurnal f Cmputer Science (IIJCS) eb Site: ttp://www.ipasj.rg/iijcs/iijcs.tm A Publiser fr Researc Mtivatin... Email: editriijcs@ipasj.rg Vlume, Issue, December 4 ISSN 3-599 Design and
More information100G SERDES Power Study
100G SERDES Pwer Study Phil Sun, Cred IEEE 802.3ck Task Frce Intrductin 100Gbps SERDES pwer challenge and lwer-pwer slutins have been presented. sun_3ck_01a_0518 intrduced balanced lwer-pwer EQ, training
More informationELEC 7250 VLSI TESTING. Term Paper. Analog Test Bus Standard
ELEC 7250 VLSI TESTING Term Paper On Analg Test Bus Standard Muthubalaji Ramkumar 1 Analg Test Bus Standard Muthubalaji Ramkumar Dept. f Electrical and Cmputer Engineering Auburn University Abstract This
More informationA Wide-Beam Circularly Polarized Asymmetric-Microstrip Antenna
> 1 A Wide-Beam Circularly Polarized Asymmetric-Microstrip Antenna Abstract A wide-beam circularly polarized (CP) asymmetricmicrostrip antenna with four unequal circular-patches is proposed for global
More informationA Beam Switching Planar Yagi-patch Array for Automotive Applications
PIERS ONLINE, VOL. 6, NO. 4, 21 35 A Beam Switching Planar Yagi-patch Array for Automotive Applications Shao-En Hsu, Wen-Jiao Liao, Wei-Han Lee, and Shih-Hsiung Chang Department of Electrical Engineering,
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 information寺尾, 道仁 ; TERAO, Michihito; 関根, 秀久 Author(s) SEKINE, Hidehisa. Citation Christchurch New Zealand, 98(1): 4
\n Title ON CHARACTERISTIC TRANSMISSION AND COEFFICIENTS OF SPLITTER DUCT ATTE 寺尾, 道仁 ; TERAO, Michihit; 関根, 秀久 Authr(s) SEKINE, Hidehisa Prceedings : INTER-NOISE 98 : Nv Citatin Christchurch New Zealand,
More informationMULTI-ELEMENT SOURCES FOCUSING ACOUSTIC ENERGY GRAZYNA GRELOWSKA
MULTI-ELEMENT SOURCES OCUSING ACOUSTIC ENERGY GRAZYNA GRELOWSKA Naval University in Gdynia Smidwicza 69, 81-103 Gdynia Pland ggrel@amw.gdynia.pl In underwater imaging the beam-frming technique plays ne
More informationEmerging wideband reconfigurable antenna elements for wireless communication systems
Forum for Electromagnetic Research Methods and Application Technologies (FERMAT) Emerging wideband reconfigurable antenna elements for wireless communication systems LIN Wei Supervisor: Dr. WONG Hang Department
More informationOperational Amplifiers High Speed Operational Amplifiers
F Electrnics: Operatinal Amplifiers Page 11.1 Operatinal Amplifiers High Speed Operatinal Amplifiers Operatinal amplifiers with 3 db bandwidths f up t 1.5 GHz are nw available, such peratinal amplifiers
More informationFigure 1: View, connection compartment closed
Radi Management Art. N. : 2700AP Operating instructins 1 Safety instructins Electrical equipment may nly be installed and fitted by electrically skilled persns. Serius injuries, fire r prperty damage pssible.
More informationCYLINDRICAL-RECTANGULAR MICROSTRIP ARRAY WITH HIGH-GAIN OPERATION FOR IEEE J MIMO APPLICATIONS
Progress In Electromagnetics Research Letters, Vol. 23, 1 7, 2011 CYLINDRICAL-RECTANGULAR MICROSTRIP ARRAY WITH HIGH-GAIN OPERATION FOR IEEE 802.11J MIMO APPLICATIONS J. H. Lu Department of Electronic
More informationInternational Journal of Microwaves Applications Available Online at
ISSN 2320-2599 Volume 6, No. 3, May - June 2017 Sandeep Kumar Singh et al., International Journal of Microwaves Applications, 6(3), May - June 2017, 30 34 International Journal of Microwaves Applications
More informationA Modified Stripe-RGBW TFT-LCD with Image-Processing Engine for Mobile Phone Displays
1628 IEEE Transactins n Cnsumer Electrnics, Vl. 53, N. 4, NOVEMBER 27 A Mdified Stripe-RGBW TFT-LCD with Image-Prcessing Engine fr Mbile Phne Displays Chih-Chang Lai and Ching-Chih Tsai, Senir Member,
More informationVoltage-mode biquadratic filters with one input and five outputs using two DDCCs
ndian Jurnal f Engineering & Materials Sciences l. 8, April, pp. 97- ltage-mde biquadratic filters with ne input and five utputs using tw DDCCs Wei-Yuan Chiu & Jiun-Wei Hrng* Department f Electrnic Engineering,
More informationAn Enhanced Bulk-Driven Folded-Cascode Amplifier in 0.18 µm CMOS Technology
Circuits and Systems, 202, 3, 87-9 http://dx.di.rg/0.4236/cs.202.32025 Published Online April 202 (http://www.scirp.rg/jurnal/cs) An Enhanced Flded-Cascde Amplifier in 0.8 µm CMOS Technlgy Arash Ahmadpur,2,
More informationPreLab5 Temperature-Controlled Fan (Due Oct 16)
PreLab5 Temperature-Cntrlled Fan (Due Oct 16) GOAL The gal f Lab 5 is t demnstrate a temperature-cntrlled fan. INTRODUCTION The electrnic measurement f temperature has many applicatins. A temperature-cntrlled
More informationA Novel Matrix Converter Topology With Simple Commutation
A Nvel Matrix Cnverter Tplgy With Simple Cmmutatin Abstract-Matrix cnverter is very simple in structure and has pwerful cntrllability. Hwever, cmmutatin prblem and cmplicated PWM methd keep it frm being
More informationA DUAL-MODE APERATURE-COUPLED STACK AN- TENNA FOR WLAN DUAL-BAND AND CIRCULAR PO- LARIZATION APPLICATIONS
Progress In Electromagnetics Research C, Vol. 17, 193 202, 2010 A DUAL-MODE APERATURE-COUPLED STACK AN- TENNA FOR WLAN DUAL-BAND AND CIRCULAR PO- LARIZATION APPLICATIONS J. C. Liu and B. H. Zeng Department
More information