Broadband analog phase shifter based on multi-stage all-pass networks
|
|
- Marlene Dean
- 5 years ago
- Views:
Transcription
1 This article has been accepted and published on J-STAGE in advance of copyediting. Content is final as presented. IEICE Electronics Express, Vol.* No.*,*-* Broadband analog phase shifter based on multi-stage all-pass networks Hsiao-Yun Li, Shiu-Cheng Chen, and Jia-Shiang Fu a) Department of Electrical Engineering, National Central University 300 Jhongda Rd., Jhongli City, Taoyuan 32001, Taiwan a) Abstract: All-pass phase shifters using ferroelectric varactors are designed, fabricated, and measured. The design equations for the all-pass phase shifter are presented. The fabrication process of the ferroelectric varactors is described. Measurement results of single-stage all-pass phase shifters show that phase shift greater than 85 can be achieved under 10-V bias. At the frequency where maximum phase shift occurs, the insertion loss is less than 2 db and the return loss is greater than 12 db. Simulations based on the measured S parameters of the single-stage phase shifters show that, by cascading four stages of individually biased single-stage phase shifters, maximum phase shift of 180 can be achieved with a phase error as low as ±3 between 2.1 GHz and 3.25 GHz, corresponding to a 43% bandwidth. Keywords: phase shifter, all-pass network, ferroelectric capacitor Classification: Microwave and millimeter wave devices, circuits, and systems References IEICE 2013 DOI: /elex Received June 24, 2013 Accepted July 17, 2013 Publicized July 25, 2013 [1] B. Acikel, T. R. Taylor, P. J. Hansen, J. S. Speck, and R. A. York, A new high performance phase shifter using Ba x Sr l x TiO 3 thin films, IEEE Microw. Wireless Compon. Lett., vol. 12, no. 7, pp , July [2] K. Miyaguchi, M. Hieda, K. Nakahara, H. Kurusu, M. Nii, M. Kasahara, T. Takagi, and S. Urasaki, An ultra-broad-band reflection-type phase-shifter MMIC with series and parallel LC circuits, IEEE Trans. Microw. Theory Tech., vol. 49, no. 12, pp , Dec [3] D. Adler and R. Popovich, Broadband switched-bit phase shifter using all-pass networks, IEEE MTT-S Int. Microw. Symp., July 1991, pp [4] X. Tang and K. Mouthaan, Design of large bandwidth phase shifters using common mode all-pass networks, IEEE Microw. Wireless Compon. Lett., vol. 22, no. 2, pp , Feb [5] D. Kim, Y. Choi, M. Ahn, M. G. Allen, J. S. Kenney, and P. Marry, 2.4 GHz continuously variable ferroelectric phase shifters using all-pass networks, IEEE Microw. Wireless Compon. Lett., vol. 13, no. 10, pp , Oct [6] L.-Y. V. Chen, R. Forse, A. H. Cardona, T. C. Watson, and R. York, Compact analog phase shifters using thin-film (Ba,Sr)TiO 3 varactors, IEEE MTT-S Int.
2 Microw. Symp., Jun. 2007, pp [7] S. Darlington, Realization of a constant phase difference, Bell Syst. Tech. J., vol. 29, pp , Jan [8] H.-Y. Li, S.-C. Chen, and J.-S. Fu, Ferroelectric thin-film integrated capacitor and its application in radio-frequency phase shifter design, submitted to 2013 IEEE Electr. Design Adv. Packag. Syst. Symp. 1 Introduction Phase shifters are important circuit blocks in a phased array, which is widely used in radars and radiometers for various applications. To implement a phase shifter, many circuit topologies exist, e.g. capacitively loaded transmission line [1], reflection-type [2], etc. Among them, all-pass network has been used to realize both digital [3, 4] and analog phase shifters [5, 6]. The advantages of all-pass phase shifter include excellent return loss and flat insertion loss responses over wide bandwidth and large phase shift under low capacitance tuning ratio [3]. Although large phase shift can be obtained, the phase shift is however quite narrowband. Cascading multiple stages of all-pass networks has been proposed to provide a constant (equal-ripple) phase shift over a wide frequency range [3, 4, 6, 7]. Nevertheless, the phase error reported in previous work is still large. For example, phase error of at least ±15 is observed for both the digital all-pass phase shifter in [3] and analog all-pass phase shifter in [6]. In this work, ferroelectric-based analog all-pass phase shifters are designed, fabricated, and measured. We have shown that, by individually biasing the single-stage all-pass phase shifters in a multi-stage all-pass phase shifter, maximum phase error as low as ±3 can be achieved over a 43% bandwidth. 2 All-pass network As shown in Fig. 1, there exist two configurations for second-order common-mode all-pass networks: series-l and series-c configurations [3]. Both configurations exhibit the same S parameters, which can be derived using even-odd mode analysis. Using the notation in [3], it is defined that and T ZT z, (1) Z 0 where 1 T and LC L Z T. (2) C ω and Z 0 denote angular frequency and system impedance, respectively. The S 11 and S 21 of the all-pass network can be then expressed as follows. and j( )( z z ) S 11 (3) 2 1 ( ) j( )( z z )
3 Fig. 1. All-pass networks: series-l, and series-c configurations. (after [8]). 2 S 1 ( ) ( ) j( )( z z ). (4) As can be inferred from Eq. (3), if the L and C are chosen so that z = 1, or equivalently, L/C = Z 0 2, then the S 11 of the network would be equal to zero, regardless of frequency. Meanwhile, the magnitude of S 21 would be one if z = 1 holds. In other words, signal entirely passes through the network without reflection at all frequencies, resulting in an all-pass frequency response. 3 Single-stage all-pass phase shifter 3.1 Design As stated in Section 2, when z = 1 holds, the magnitude of S 21 is equal to one and is frequency-independent. On the other hand, the phase of S 21 can be as well derived from Eq. (4) and is found to be a function of frequency: S 21 2tan. (5) If L and C in the network are simultaneously varied while maintaining the condition that z = 1, then the network would remain all-pass but ϕ is changed. Therefore, the all-pass network can be used to implement phase shifters. As shown in the above analysis, the L and C must be simultaneously varied in order to maintain the all-pass frequency response. However, since variable inductors are not as commonly available as variable capacitors, only C is varied in practice. Although using a fixed inductance (L = L 0 ) results in nonzero reflection, S 11 at the frequency of operation, ω c, can be maintained below 10 db as long as C is varied between C 0 /2 and 2C 0, where C 0 1 Z and c 0 Z L 0 0. (6) c In this work, phase shifters are designed based on the all-pass networks. The schematic of the designed all-pass phase shifter is shown in Fig. 2. As shown in the Fig. 2, the inductance is fixed whereas the capacitance is variable. The bias voltage for the varactors is applied through one of the rf ports using a bias-tee. To properly bias the two series varactors, a large resistor R BB (> 2 k) is added, which provides dc path to ground while having little impact on the rf performance. Two all-pass phase shifters are designed at 2 GHz and 3.4 GHz and are designated
4 Fig. 2. Schematic of an all-pass phase shifter with fixed inductance and variable capacitance (modified from [8]), and photograph of the proposed ferroelectric-based all-pass phase shifter. as PHS-LB and PHS-HB, respectively. Using Eq. (6), the fixed inductance can be calculated to be 3.98 nh and 2.34 nh for the 2-GHz and 3.4-GHz phase shifters, respectively. Surface-mount chip inductors with 0201 case size are used to realize the desired inductance. On the other hand, the varactors are implemented using MIM (metal-insulator-metal) capacitors with ferroelectric BST (barium strontium titanate, Ba 1 x Sr x TiO 3 ) as the insulator. As a ferroelectric material, BST exhibits field-dependent permittivity. Therefore, the capacitance of a thin-film BST MIM capacitor can be controlled by changing the bias voltage across its two terminals. The fabrication process for the phase shifters with ferroelectric BST capacitors will be described in Section 3.2. Layout of the all-pass shifters is drawn and full-wave electromagnetic simulations are performed to account for the effects of pads and connecting lines. With full-wave electromagnetic simulation results, the frequencies at which maximum phase shift occurs shift slightly lower to 1.9 GHz and 3.1 GHz from the originally-designed 2 GHz and 3.4 GHz, respectively. 3.2 Fabrication The all-pass phase shifters with ferroelectric varactors are fabricated on a 430-μm-thick c-plane sapphire substrate. Bottom metal layer made of Cr/Pt (5/100 nm) is first formed using thermal/e-gun evaporation and standard lift-off process. Next, 200-nm-thick BST thin film is deposited using pulsed laser deposition (PLD) technique. The substrate temperature is 850 C. The composition of the target is Ba 0.5 Sr 0.5 TiO 3. The wavelength and pulse energy of the laser pulses are 248 nm and 180 mj, respectively. Constant flow of oxygen is supplied throughout the deposition. The pressure of the oxygen is maintained at about 250 mtorr. The BST thin film is then etched using a diluted HF solution to expose the bottom electrodes for further connections. Following that, top metal layer made of Ti/Pt/Ti/Au (5/100/5/1000 nm) is fabricated using e-gun and thermal evaporation techniques and standard lift-off process. Finally, surface-mount inductors and resistor are mounted on the substrate using silver epoxy. The photograph of one of the fabricated all-pass phase shifters is shown in Fig Results According to measurement results of the fabricated ferroelectric capacitors, the capacitance density of the ferroelectric capacitors in our process is approximately
5 Fig. 3. The measurement results of the ferroelectric-based all-pass phase shifters: PHS-LB (after [8]), and PHS-HB. Top: S 11 and S 21 versus frequency for bias voltage swept from 0 V to 10 V; middle: phase shift versus frequency for various bias voltages; bottom: S 11, S 21, and phase shift versus bias voltage at frequency where maximum phase shift occurs. 19 ff/μm 2 at 0-V bias. The tunability of the capacitance reaches 50% as the bias voltage is increased from 0 V to 7 V. The measurement results of the ferroelectric-based all-pass phase shifters are plotted in Fig. 3. The results for PHS-LB and PHS-HB are shown in Fig. 3 and, respectively. By looking at the S 11 and S 21, it can be seen that both of the phase shifters exhibit all-pass frequency responses from dc to 6 GHz for bias voltage ranging from 0 V to 10 V. When biased up to 10 V, maximum phase shifts of 87.8 and 97.8 are achieved for PHS-LB and PHS-HB, respectively. The frequency at which maximum phase shift occurs is 1.75 GHz for PHS-LB and 3.15 GHz for PHS-HB. For bias voltage between 0 V and 10 V, the insertion loss is less than 2 db and return loss is greater than 12 db for both PHS-LB and PHS-HB at 1.75 GHz and 3.15 GHz, respectively.
6 Fig. 4. Simulation results of a four-stage all-pass phase shifter: S 11 and S 21, and phase shift. 4 Multi-stage all-pass phase shifter As shown in Fig. 3, the S 11 and S 21 of a single-stage all-pass phase shifter are fairly wideband. In contrast, the bandwidth for the phase shift is quite narrow. To improve the bandwidth for phase shift, one may cascade multiple stages of all-pass phase shifters that are designed at different frequencies [3, 4, 6, 7]. Based on this idea, a multi-stage all-pass phase shifter is simulated using the measured S parameters of the single-stage all-pass phase shifter presented in Section 3. Four single-stage phase shifters are connected in cascade as shown in the inset of Fig. 4. To produce a flat phase-shift response, PHS-LB and PHS-HB need to be individually biased. The combinations of the bias voltages for PHS-LB and PHS-HB are shown in Fig. 4. The bias voltage for PHS-LB is between 3 V and 8.5 V whereas that for PHS-HB is between 2 V and 9.5 V. Under these bias-voltage combinations, the multi-stage phase shifter exhibits an insertion loss less than 7 db and a VSWR less than 2 from dc to 3.7 GHz. Maximum phase shift exceeding 180 can be achieved. Furthermore, maximum phase error is as low as ±3 between 2.1 GHz and 3.25 GHz, which corresponds to a bandwidth of 43%. 5 Conclusion In this work, ferroelectric-based all-pass phase shifters are designed, fabricated, and measured. The fabrication process of the ferroelectric BST capacitors is described. The fabricated single-stage all-pass phase shifters exhibit wideband responses for insertion loss and return loss as well as large phase shift for a narrower frequency range. Cascading multiple single-stage all-pass phase shifters is proposed as a mean to achieve broadband phase-shift response. Simulation of a four-stage all-pass phase shifter is performed based on the measured S parameters of the single-stage phase shifters. Simulation results demonstrate that low phase error can be achieved over a wide bandwidth. Acknowledgments This work is supported by National Science Council of Taiwan under NSC E and NSC E The authors thank the National Center for High-Performance Computing for providing software.
Compact Distributed Phase Shifters at X-Band Using BST
Integrated Ferroelectrics, 56: 1087 1095, 2003 Copyright C Taylor & Francis Inc. ISSN: 1058-4587 print/ 1607-8489 online DOI: 10.1080/10584580390259623 Compact Distributed Phase Shifters at X-Band Using
More informationOn the Development of Tunable Microwave Devices for Frequency Agile Applications
PIERS ONLINE, VOL. 4, NO. 7, 28 726 On the Development of Tunable Microwave Devices for Frequency Agile Applications Jia-Sheng Hong and Young-Hoon Chun Department of Electrical, Electronic and Computer
More informationA 6 : 1 UNEQUAL WILKINSON POWER DIVIDER WITH EBG CPW
Progress In Electromagnetics Research Letters, Vol. 8, 151 159, 2009 A 6 : 1 UNEQUAL WILKINSON POWER DIVIDER WITH EBG CPW C.-P. Chang, C.-C. Su, S.-H. Hung, and Y.-H. Wang Institute of Microelectronics,
More informationDesign and Fabrication of Passive Barium Strontium Titanate (BST) Thin Film Varactor Based Phase Shifters for Operation within a 5-15 GHz Bandwidth
University of Dayton ecommons Honors Theses University Honors Program 4-2016 Design and Fabrication of Passive Barium Strontium Titanate (BST) Thin Film Varactor Based Phase Shifters for Operation within
More informationWIDE-BAND circuits are now in demand as wide-band
704 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 54, NO. 2, FEBRUARY 2006 Compact Wide-Band Branch-Line Hybrids Young-Hoon Chun, Member, IEEE, and Jia-Sheng Hong, Senior Member, IEEE Abstract
More informationResearch Article A Reconfigurable Coplanar Waveguide Bowtie Antenna Using an Integrated Ferroelectric Thin-Film Varactor
Antennas and Propagation Volume 212, Article ID 24919, 6 pages doi:1.1155/212/24919 Research Article A Reconfigurable Coplanar Waveguide Bowtie Antenna Using an Integrated Ferroelectric Thin-Film Varactor
More informationLOW-VOLTAGE FERROELECTRIC PHASE SHIFTERS FROM L- TO C-BAND
LOW-VOLTAGE FERROELECTRIC PHASE SHIFTERS FROM L- TO C-BAND J. Stevenson Kenney, Yong Kyu Yoon, Minsik Ahn, Mark G. Allen, hiyong hao, 2 Xiaoyan Wang, 2 Andrew Hunt 2, and Dongsu Kim 3 School of Electrical
More informationA NOVEL MICROSTRIP LC RECONFIGURABLE BAND- PASS FILTER
Progress In Electromagnetics Research Letters, Vol. 36, 171 179, 213 A NOVEL MICROSTRIP LC RECONFIGURABLE BAND- PASS FILTER Qianyin Xiang, Quanyuan Feng *, Xiaoguo Huang, and Dinghong Jia School of Information
More informationCompact Microstrip UWB Power Divider with Dual Notched Bands Using Dual-Mode Resonator
Progress In Electromagnetics Research Letters, Vol. 75, 39 45, 218 Compact Microstrip UWB Power Divider with Dual Notched Bands Using Dual-Mode Resonator Lihua Wu 1, Shanqing Wang 2,LuetaoLi 3, and Chengpei
More informationA COMPACT DUAL-BAND POWER DIVIDER USING PLANAR ARTIFICIAL TRANSMISSION LINES FOR GSM/DCS APPLICATIONS
Progress In Electromagnetics Research Letters, Vol. 1, 185 191, 29 A COMPACT DUAL-BAND POWER DIVIDER USING PLANAR ARTIFICIAL TRANSMISSION LINES FOR GSM/DCS APPLICATIONS T. Yang, C. Liu, L. Yan, and K.
More informationA 10:1 UNEQUAL GYSEL POWER DIVIDER USING A CAPACITIVE LOADED TRANSMISSION LINE
Progress In Electromagnetics Research Letters, Vol. 32, 1 10, 2012 A 10:1 UNEQUAL GYSEL POWER DIVIDER USING A CAPACITIVE LOADED TRANSMISSION LINE Y. Kim * School of Electronic Engineering, Kumoh National
More informationLOW LOSS FERROELECTRIC BASED PHASE SHIFTER FOR HIGH POWER ANTENNA SCAN BEAM SYSTEM
LOW LOSS FERROELECTRIC BASED PHASE SHIFTER FOR HIGH POWER ANTENNA SCAN BEAM SYSTEM Franco De Flaviis and N.G. Alexopoulos University of California at Los Angeles, Dep. of Electrical Engineering Los Angeles
More informationL/S-Band 0.18 µm CMOS 6-bit Digital Phase Shifter Design
6th International Conference on Mechatronics, Computer and Education Informationization (MCEI 06) L/S-Band 0.8 µm CMOS 6-bit Digital Phase Shifter Design Xinyu Sheng, a and Zhangfa Liu, b School of Electronic
More informationBandpass-Response Power Divider with High Isolation
Progress In Electromagnetics Research Letters, Vol. 46, 43 48, 2014 Bandpass-Response Power Divider with High Isolation Long Xiao *, Hao Peng, and Tao Yang Abstract A novel wideband multilayer power divider
More informationMODIFIED BROADBAND SCHIFFMAN PHASE SHIFTER USING DENTATE MICROSTRIP AND PATTERNED GROUND PLANE
Progress In Electromagnetics Research Letters, Vol. 24, 9 16, 2011 MODIFIED BROADBAND SCHIFFMAN PHASE SHIFTER USING DENTATE MICROSTRIP AND PATTERNED GROUND PLANE Z. Zhang *, Y.-C. Jiao, S.-F. Cao, X.-M.
More informationDESIGN OF COMPACT MICROSTRIP LOW-PASS FIL- TER WITH ULTRA-WIDE STOPBAND USING SIRS
Progress In Electromagnetics Research Letters, Vol. 18, 179 186, 21 DESIGN OF COMPACT MICROSTRIP LOW-PASS FIL- TER WITH ULTRA-WIDE STOPBAND USING SIRS L. Wang, H. C. Yang, and Y. Li School of Physical
More informationA 6-bit active digital phase shifter
A 6-bit active digital phase shifter Alireza Asoodeh a) and Mojtaba Atarodi b) Electrical Engineering Department, Sharif University of Technology, Tehran, Iran a) Alireza asoodeh@yahoo.com b) Atarodi@sharif.edu
More informationULTRA-WIDEBAND (UWB) radio technology has been
3772 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 54, NO. 10, OCTOBER 2006 Compact Ultra-Wideband Bandpass Filters Using Composite Microstrip Coplanar-Waveguide Structure Tsung-Nan Kuo, Shih-Cheng
More informationCompact Wideband Quadrature Hybrid based on Microstrip Technique
Compact Wideband Quadrature Hybrid based on Microstrip Technique Ramy Mohammad Khattab and Abdel-Aziz Taha Shalaby Menoufia University, Faculty of Electronic Engineering, Menouf, 23952, Egypt Abstract
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 informationHigh-Selectivity UWB Filters with Adjustable Transmission Zeros
Progress In Electromagnetics Research Letters, Vol. 52, 51 56, 2015 High-Selectivity UWB Filters with Adjustable Transmission Zeros Liang Wang *, Zhao-Jun Zhu, and Shang-Yang Li Abstract This letter proposes
More informationWIDE-BAND HIGH ISOLATION SUBHARMONICALLY PUMPED RESISTIVE MIXER WITH ACTIVE QUASI- CIRCULATOR
Progress In Electromagnetics Research Letters, Vol. 18, 135 143, 2010 WIDE-BAND HIGH ISOLATION SUBHARMONICALLY PUMPED RESISTIVE MIXER WITH ACTIVE QUASI- CIRCULATOR W. C. Chien, C.-M. Lin, C.-H. Liu, S.-H.
More information1-13GHz Wideband LNA utilizing a Transformer as a Compact Inter-stage Network in 65nm CMOS
-3GHz Wideband LNA utilizing a Transformer as a Compact Inter-stage Network in 65nm CMOS Hyohyun Nam and Jung-Dong Park a Division of Electronics and Electrical Engineering, Dongguk University, Seoul E-mail
More informationLOW THIRD-ORDER INTERMODULATION DISTOR- TION IN Ba 0.6 Sr 0.4 TiO 3 THIN FILM INTERDIGITAL CA- PACITORS
Progress In Electromagnetics Research C, Vol. 44, 225 238, 2013 LOW THIRD-ORDER INTERMODULATION DISTOR- TION IN Ba 0.6 Sr 0.4 TiO 3 THIN FILM INTERDIGITAL CA- PACITORS Muhammad F. Abdul Khalid 1, 2, *,
More informationH.-W. Wu Department of Computer and Communication Kun Shan University No. 949, Dawan Road, Yongkang City, Tainan County 710, Taiwan
Progress In Electromagnetics Research, Vol. 107, 21 30, 2010 COMPACT MICROSTRIP BANDPASS FILTER WITH MULTISPURIOUS SUPPRESSION H.-W. Wu Department of Computer and Communication Kun Shan University No.
More informationBROADBAND ASYMMETRICAL MULTI-SECTION COU- PLED LINE WILKINSON POWER DIVIDER WITH UN- EQUAL POWER DIVIDING RATIO
Progress In Electromagnetics Research C, Vol. 43, 217 229, 2013 BROADBAND ASYMMETRICAL MULTI-SECTION COU- PLED LINE WILKINSON POWER DIVIDER WITH UN- EQUAL POWER DIVIDING RATIO Puria Salimi *, Mahdi Moradian,
More informationDevelopment of Tunable Ka-band Filters
1 Development of Tunable Ka-band Filters Final Report Ben Lacroix, Stanis Courreges, Yuan Li, Carlos Donado and John Papapolymerou School of Electrical and Computer Engineering Georgia Institute of Technology
More informationA COMPACT DOUBLE-BALANCED STAR MIXER WITH NOVEL DUAL 180 HYBRID. National Cheng-Kung University, No. 1 University Road, Tainan 70101, Taiwan
Progress In Electromagnetics Research C, Vol. 24, 147 159, 2011 A COMPACT DOUBLE-BALANCED STAR MIXER WITH NOVEL DUAL 180 HYBRID Y.-A. Lai 1, C.-N. Chen 1, C.-C. Su 1, S.-H. Hung 1, C.-L. Wu 1, 2, and Y.-H.
More informationCompact Dual-Band Microstrip BPF with Multiple Transmission Zeros for Wideband and WLAN Applications
Progress In Electromagnetics Research Letters, Vol. 50, 79 84, 2014 Compact Dual-Band Microstrip BPF with Multiple Transmission Zeros for Wideband and WLAN Applications Hong-Li Wang, Hong-Wei Deng, Yong-Jiu
More informationBroadband Substrate to Substrate Interconnection
Progress In Electromagnetics Research C, Vol. 59, 143 147, 2015 Broadband Substrate to Substrate Interconnection Bo Zhou *, Chonghu Cheng, Xingzhi Wang, Zixuan Wang, and Shanwen Hu Abstract A broadband
More informationCOMPACT BRANCH-LINE COUPLER FOR HARMONIC SUPPRESSION
Progress In Electromagnetics Research C, Vol. 16, 233 239, 2010 COMPACT BRANCH-LINE COUPLER FOR HARMONIC SUPPRESSION J. S. Kim Department of Information and Communications Engineering Kyungsung University
More informationA 180 tunable analog phase shifter based on a single all-pass unit cell
A 180 tunable analog phase shifter based on a single all-pass unit cell Khaled Khoder, André Pérennec, Marc Le Roy To cite this version: Khaled Khoder, André Pérennec, Marc Le Roy. A 180 tunable analog
More informationA BROADBAND QUADRATURE HYBRID USING IM- PROVED WIDEBAND SCHIFFMAN PHASE SHIFTER
Progress In Electromagnetics Research C, Vol. 11, 229 236, 2009 A BROADBAND QUADRATURE HYBRID USING IM- PROVED WIDEBAND SCHIFFMAN PHASE SHIFTER E. Jafari, F. Hodjatkashani, and R. Rezaiesarlak Department
More informationPARALLEL coupled-line filters are widely used in microwave
2812 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 53, NO. 9, SEPTEMBER 2005 Improved Coupled-Microstrip Filter Design Using Effective Even-Mode and Odd-Mode Characteristic Impedances Hong-Ming
More informationBroadband Microstrip band pass filters using triple-mode resonator
Broadband Microstrip band pass filters using triple-mode resonator CH.M.S.Chaitanya (07548), M.Tech (CEDT) Abstract: A broadband microstrip band pass filter using a triple-mode resonator is presented.
More informationTunable Ultra Wideband Phase Shifter using Liquid Crystal Polymer
Tunable Ultra Wideband Phase Shifter using Liquid Crystal Polymer Author Abbosh, Amin, Bailkowski, Marek, Thiel, David Published 2009 Conference Title Proceedings of the Asia-Pacific Microwave Conference
More informationProgress In Electromagnetics Research Letters, Vol. 15, 89 98, 2010
Progress In Electromagnetics Research Letters, Vol. 15, 89 98, 2010 COMPACT ULTRA-WIDEBAND PHASE SHIFTER M. N. Moghadasi Electrical Engineering Department Science and Research Branch Islamic Azad University
More informationDesign technique of broadband CMOS LNA for DC 11 GHz SDR
Design technique of broadband CMOS LNA for DC 11 GHz SDR Anh Tuan Phan a) and Ronan Farrell Institute of Microelectronics and Wireless Systems, National University of Ireland Maynooth, Maynooth,Co. Kildare,
More informationA COMPACT SIZE LOW POWER AND WIDE TUNING RANGE VCO USING DUAL-TUNING LC TANKS
Progress In Electromagnetics Research C, Vol. 25, 81 91, 2012 A COMPACT SIZE LOW POWER AND WIDE TUNING RANGE VCO USING DUAL-TUNING LC TANKS S. Mou *, K. Ma, K. S. Yeo, N. Mahalingam, and B. K. Thangarasu
More informationMicrostrip Coupler with High Isolation
International Journal of Electronics and Communication Engineering. ISSN 0974-2166 Volume 7, Number 2 (2014), pp. 105-110 International Research Publication House http://www.irphouse.com Microstrip Coupler
More informationMODERN microwave communication systems require
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 54, NO. 2, FEBRUARY 2006 755 Novel Compact Net-Type Resonators and Their Applications to Microstrip Bandpass Filters Chi-Feng Chen, Ting-Yi Huang,
More informationX. Wu Department of Information and Electronic Engineering Zhejiang University Hangzhou , China
Progress In Electromagnetics Research Letters, Vol. 17, 181 189, 21 A MINIATURIZED BRANCH-LINE COUPLER WITH WIDEBAND HARMONICS SUPPRESSION B. Li Ministerial Key Laboratory of JGMT Nanjing University of
More informationMicrostrip even-mode half-wavelength SIR based I-band interdigital bandpass filter
Indian Journal of Engineering & Materials Sciences Vol. 9, October 0, pp. 99-303 Microstrip even-mode half-wavelength SIR based I-band interdigital bandpass filter Ram Krishna Maharjan* & Nam-Young Kim
More informationElectrically small dual-band. fixed low-frequency and tunable high-frequency bands
LETTER IEICE Electronics Express, Vol.11, No.5, 1 8 Electrically small dual-band substrate-integratedwaveguide antenna with fixed low-frequency and tunable high-frequency bands Hyunseong Kang and Sungjoon
More informationDESIGN OF SEVERAL POWER DIVIDERS USING CPW- TO-MICROSTRIP TRANSITION
Progress In Electromagnetics Research Letters, Vol. 41, 125 134, 2013 DESIGN OF SEVERAL POWER DIVIDERS USING CPW- TO-MICROSTRIP TRANSITION Maoze Wang *, Fushun Zhang, Jian Sun, Ke Chen, and Bin Wen National
More informationDesign of Microstrip Parallel-Coupled Line Band Pass Filters for the Application in Fifth-Generation Wireless Communication
Design of Microstrip Parallel-Coupled Line Band Pass Filters for the Application in Fifth-Generation Wireless Communication N. N. Al-Areqi, N. Seman and T. A. Rahman Wireless Communication Centre (WCC),
More informationA Simple Bandpass Filter with Independently Tunable Center Frequency and Bandwidth
Progress In Electromagnetics Research Letters, Vol. 69, 3 8, 27 A Simple Bandpass Filter with Independently Tunable Center Frequency and Bandwidth Bo Zhou *, Jing Pan Song, Feng Wei, and Xiao Wei Shi Abstract
More informationDUAL-MODE SPLIT MICROSTRIP RESONATOR FOR COMPACT NARROWBAND BANDPASS FILTERS. Federal University, Krasnoyarsk , Russia
Progress In Electromagnetics Research C, Vol. 23, 151 160, 2011 DUAL-MODE SPLIT MICROSTRIP RESONATOR FOR COMPACT NARROWBAND BANDPASS FILTERS V. V. Tyurnev 1, * and A. M. Serzhantov 2 1 Kirensky Institute
More informationWaveguide-Mounted RF MEMS for Tunable W-band Analog Type Phase Shifter
Waveguide-Mounted RF MEMS for Tunable W-band Analog Type Phase Shifter D. PSYCHOGIOU 1, J. HESSELBARTH 1, Y. LI 2, S. KÜHNE 2, C. HIEROLD 2 1 Laboratory for Electromagnetic Fields and Microwave Electronics
More informationA VARACTOR-TUNABLE HIGH IMPEDANCE SURFACE FOR ACTIVE METAMATERIAL ABSORBER
Progress In Electromagnetics Research C, Vol. 43, 247 254, 2013 A VARACTOR-TUNABLE HIGH IMPEDANCE SURFACE FOR ACTIVE METAMATERIAL ABSORBER Bao-Qin Lin *, Shao-Hong Zhao, Qiu-Rong Zheng, Meng Zhu, Fan Li,
More informationMA4AGSW2. AlGaAs SP2T PIN Diode Switch. MA4AGSW2 Layout. Features. Description. Absolute Maximum Ratings TA = +25 C (Unless otherwise specified)
AlGaAs SP2T PIN Diode Switch Features Ultra Broad Bandwidth: 5 MHz to 5 GHz Functional bandwidth : 5 MHz to 7 GHz.7 db Insertion Loss, 33 db Isolation at 5 GHz Low Current consumption: -1 ma for Low Loss
More informationCompact Tunable 3 db Hybrid and Rat-Race Couplers with Harmonics Suppression
372 Compact Tunable 3 db Hybrid and Rat-Race Couplers with Harmonics Suppression Khair Al Shamaileh 1, Mohammad Almalkawi 1, Vijay Devabhaktuni 1, and Nihad Dib 2 1 Electrical Engineering and Computer
More informationBALANCED MIXERS USING WIDEBAND SYMMETRIC OFFSET STACK BALUN IN 0.18 µm CMOS
Progress In Electromagnetics Research C, Vol. 23, 41 54, 211 BALANCED MIXERS USING WIDEBAND SYMMETRIC OFFSET STACK BALUN IN.18 µm CMOS H.-K. Chiou * and J.-Y. Lin Department of Electrical Engineering,
More informationCompact Multilayer Hybrid Coupler Based on Size Reduction Methods
Progress In Electromagnetics Research Letters, Vol. 51, 1 6, 2015 Compact Multilayer Hybrid Coupler Based on Size Reduction Methods Young Kim 1, * and Youngchul Yoon 2 Abstract This paper presents a compact
More informationAn Area efficient structure for a Dual band Wilkinson power divider with flexible frequency ratios
1 An Area efficient structure for a Dual band Wilkinson power divider with flexible frequency ratios Jafar Sadique, Under Guidance of Ass. Prof.K.J.Vinoy.E.C.E.Department Abstract In this paper a new design
More informationA Doherty Power Amplifier with Extended Efficiency and Bandwidth
This article has been accepted and published on J-STAGE in advance of copyediting. Content is final as presented. IEICE Electronics Express, Vol.* No.*,*-* A Doherty Power Amplifier with Extended Efficiency
More informationBroadband transition between substrate integrated waveguide and rectangular waveguide based on ridged steps
This article has been accepted and published on J-STAGE in advance of copyediting. Content is final as presented. IEICE Electronics Express, Vol.* No.*,*-* Broadband transition between substrate integrated
More informationModified Wilkinson Compact Wide Band (2-12GHz) Equal Power Divider
American Journal of Engineering Research (AJER) e-issn : 2320-0847 p-issn : 2320-0936 Volume-03, Issue-10, pp-90-98 www.ajer.org Research Paper Open Access Modified Wilkinson Compact Wide Band (2-12GHz)
More informationImprovement of Stopband Performance OF Microstrip Reconfigurable Band Pass Filter By Defected Ground Structure
Improvement of Stopband Performance OF Microstrip Reconfigurable Band Pass Filter By Defected Ground Structure Susanta Kumar Parui 1, and Santanu Das 2 Dept. of Electronics and Telecommunication Engineering
More informationQUASI-ELLIPTIC MICROSTRIP BANDSTOP FILTER USING TAP COUPLED OPEN-LOOP RESONATORS
Progress In Electromagnetics Research C, Vol. 35, 1 11, 2013 QUASI-ELLIPTIC MICROSTRIP BANDSTOP FILTER USING TAP COUPLED OPEN-LOOP RESONATORS Kenneth S. K. Yeo * and Punna Vijaykumar School of Architecture,
More informationIN MICROWAVE communication systems, high-performance
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 54, NO. 2, FEBRUARY 2006 533 Compact Microstrip Bandpass Filters With Good Selectivity and Stopband Rejection Pu-Hua Deng, Yo-Shen Lin, Member,
More informationIn modern wireless. A High-Efficiency Transmission-Line GaN HEMT Class E Power Amplifier CLASS E AMPLIFIER. design of a Class E wireless
CASS E AMPIFIER From December 009 High Frequency Electronics Copyright 009 Summit Technical Media, C A High-Efficiency Transmission-ine GaN HEMT Class E Power Amplifier By Andrei Grebennikov Bell abs Ireland
More informationDual Band Wilkinson Power divider without Reactive Components. Subramanian.T.R (DESE)
1 Dual Band Wilkinson Power divider without Reactive Components Subramanian.T.R (DESE) Abstract This paper presents an unequal Wilkinson power divider operating at arbitrary dual band without reactive
More informationThe Design of E-band MMIC Amplifiers
The Design of E-band MMIC Amplifiers Liam Devlin, Stuart Glynn, Graham Pearson, Andy Dearn * Plextek Ltd, London Road, Great Chesterford, Essex, CB10 1NY, UK; (lmd@plextek.co.uk) Abstract The worldwide
More informationA 2 4 GHz Octave Bandwidth GaN HEMT Power Amplifier with High Efficiency
Progress In Electromagnetics Research Letters, Vol. 63, 7 14, 216 A 2 4 GHz Octave Bandwidth GaN HEMT Power Amplifier with High Efficiency Hao Guo, Chun-Qing Chen, Hao-Quan Wang, and Ming-Li Hao * Abstract
More informationA COMPACT WIDEBAND MATCHING 0.18-µM CMOS UWB LOW-NOISE AMPLIFIER USING ACTIVE FEED- BACK TECHNIQUE
Progress In Electromagnetics Research C, Vol. 16, 161 169, 2010 A COMPACT WIDEBAND MATCHING 0.18-µM CMOS UWB LOW-NOISE AMPLIFIER USING ACTIVE FEED- BACK TECHNIQUE J.-Y. Li, W.-J. Lin, and M.-P. Houng Department
More informationMetamaterial Inspired CPW Fed Compact Low-Pass Filter
Progress In Electromagnetics Research C, Vol. 57, 173 180, 2015 Metamaterial Inspired CPW Fed Compact Low-Pass Filter BasilJ.Paul 1, *, Shanta Mridula 1,BinuPaul 1, and Pezholil Mohanan 2 Abstract A metamaterial
More informationExtraction of Transmission Line Parameters and Effect of Conductive Substrates on their Characteristics
ROMANIAN JOURNAL OF INFORMATION SCIENCE AND TECHNOLOGY Volume 19, Number 3, 2016, 199 212 Extraction of Transmission Line Parameters and Effect of Conductive Substrates on their Characteristics Saurabh
More informationDUAL-WIDEBAND BANDPASS FILTERS WITH EX- TENDED STOPBAND BASED ON COUPLED-LINE AND COUPLED THREE-LINE RESONATORS
Progress In Electromagnetics Research, Vol. 4, 5, 0 DUAL-WIDEBAND BANDPASS FILTERS WITH EX- TENDED STOPBAND BASED ON COUPLED-LINE AND COUPLED THREE-LINE RESONATORS J.-T. Kuo, *, C.-Y. Fan, and S.-C. Tang
More informationLINEARITY IMPROVEMENT OF CASCODE CMOS LNA USING A DIODE CONNECTED NMOS TRANSISTOR WITH A PARALLEL RC CIRCUIT
Progress In Electromagnetics Research C, Vol. 17, 29 38, 2010 LINEARITY IMPROVEMENT OF CASCODE CMOS LNA USING A DIODE CONNECTED NMOS TRANSISTOR WITH A PARALLEL RC CIRCUIT C.-P. Chang, W.-C. Chien, C.-C.
More informationDISTRIBUTED amplification is a popular technique for
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II: EXPRESS BRIEFS, VOL. 58, NO. 5, MAY 2011 259 Compact Transformer-Based Distributed Amplifier for UWB Systems Aliakbar Ghadiri, Student Member, IEEE, and Kambiz
More informationA MINIATURIZED OPEN-LOOP RESONATOR FILTER CONSTRUCTED WITH FLOATING PLATE OVERLAYS
Progress In Electromagnetics Research C, Vol. 14, 131 145, 21 A MINIATURIZED OPEN-LOOP RESONATOR FILTER CONSTRUCTED WITH FLOATING PLATE OVERLAYS C.-Y. Hsiao Institute of Electronics Engineering National
More informationCOMPACT MICROSTRIP BANDPASS FILTERS USING TRIPLE-MODE RESONATOR
Progress In Electromagnetics Research Letters, Vol. 35, 89 98, 2012 COMPACT MICROSTRIP BANDPASS FILTERS USING TRIPLE-MODE RESONATOR K. C. Lee *, H. T. Su, and M. K. Haldar School of Engineering, Computing
More informationComplex Impedance-Transformation Out-of-Phase Power Divider with High Power-Handling Capability
Progress In Electromagnetics Research Letters, Vol. 53, 13 19, 215 Complex Impedance-Transformation Out-of-Phase Power Divider with High Power-Handling Capability Lulu Bei 1, 2, Shen Zhang 2, *, and Kai
More informationNew Design Formulas for Impedance-Transforming 3-dB Marchand Baluns Hee-Ran Ahn, Senior Member, IEEE, and Sangwook Nam, Senior Member, IEEE
2816 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 59, NO. 11, NOVEMBER 2011 New Design Formulas for Impedance-Transforming 3-dB Marchand Baluns Hee-Ran Ahn, Senior Member, IEEE, and Sangwook
More informationA Folded SIR Cross Coupled WLAN Dual-Band Filter
Progress In Electromagnetics Research Letters, Vol. 45, 115 119, 2014 A Folded SIR Cross Coupled WLAN Dual-Band Filter Zi Jian Su *, Xi Chen, Long Li, Bian Wu, and Chang-Hong Liang Abstract A compact cross-coupled
More informationUNIVERSITY OF CALIFORNIA. Santa Barbara. Compact Phase Shifter Design Using Barium Strontium Titanate. Thin-Film Varactors
UNIVERSITY OF CALIFORNIA Santa Barbara Compact Phase Shifter Design Using Barium Strontium Titanate Thin-Film Varactors A Thesis submitted in partial satisfaction of the requirements for the degree of
More informationSynthesis of Optimal On-Chip Baluns
Synthesis of Optimal On-Chip Baluns Sharad Kapur, David E. Long and Robert C. Frye Integrand Software, Inc. Berkeley Heights, New Jersey Yu-Chia Chen, Ming-Hsiang Cho, Huai-Wen Chang, Jun-Hong Ou and Bigchoug
More informationA Triple-Band Voltage-Controlled Oscillator Using Two Shunt Right-Handed 4 th -Order Resonators
JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, VOL.16, NO.4, AUGUST, 2016 ISSN(Print) 1598-1657 http://dx.doi.org/10.5573/jsts.2016.16.4.506 ISSN(Online) 2233-4866 A Triple-Band Voltage-Controlled Oscillator
More informationDesign of low-loss 60 GHz integrated antenna switch in 65 nm CMOS
LETTER IEICE Electronics Express, Vol.15, No.7, 1 10 Design of low-loss 60 GHz integrated antenna switch in 65 nm CMOS Korkut Kaan Tokgoz a), Seitaro Kawai, Kenichi Okada, and Akira Matsuzawa Department
More informationCOMPACT DUAL-MODE TRI-BAND TRANSVERSAL MICROSTRIP BANDPASS FILTER
Progress In Electromagnetics Research Letters, Vol. 26, 161 168, 2011 COMPACT DUAL-MODE TRI-BAND TRANSVERSAL MICROSTRIP BANDPASS FILTER J. Li 1 and C.-L. Wei 2, * 1 College of Science, China Three Gorges
More informationAn on-chip antenna integrated with a transceiver in 0.18-µm CMOS technology
This article has been accepted and published on J-STAGE in advance of copyediting. Content is final as presented. IEICE Electronics Express, Vol.* No.*,*-* An on-chip antenna integrated with a transceiver
More informationL-Band SiGe HBT Differential Variable Gain. Amplifiers Using Capacitance-Variable/Selectable. Bridged-T Attenuators
Contemporary Engineering ciences, Vol. 5, 01, no. 8, 391-405 -Band ie HBT Differential Variable ain Amplifiers Using Capacitance-Variable/electable Bridged-T Attenuators Kazuyoshi akamoto 1-1-5 Tsujido-Nishikaigan,
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 informationDual band planar hybrid coupler with enhanced bandwidth using particle swarm optimization technique
Dual band planar hybrid coupler with enhanced bandwidth using particle swarm optimization technique Mahdi Yousefi a), Mohammad Mosalanejad b), Gholamreza Moradi c), and Abdolali Abdipour d) Wave Propagation
More informationDesign and Layout of a X-Band MMIC Power Amplifier in a Phemt Technology
Design and Layout of a X-Band MMIC Power Amplifier in a Phemt Technology Renbin Dai, and Rana Arslan Ali Khan Abstract The design of Class A and Class AB 2-stage X band Power Amplifier is described in
More informationMillimeter-Wave MMIC Single-Pole-Double-Throw Passive HEMT Switches Using Impedance-Transformation Networks
1076 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 51, NO. 4, APRIL 2003 Millimeter-Wave MMIC Single-Pole-Double-Throw Passive HEMT Switches Using Impedance-Transformation Networks Kun-You
More informationDesign of Duplexers for Microwave Communication Systems Using Open-loop Square Microstrip Resonators
International Journal of Electromagnetics and Applications 2016, 6(1): 7-12 DOI: 10.5923/j.ijea.20160601.02 Design of Duplexers for Microwave Communication Charles U. Ndujiuba 1,*, Samuel N. John 1, Taofeek
More informationTUNED AMPLIFIERS 5.1 Introduction: Coil Losses:
TUNED AMPLIFIERS 5.1 Introduction: To amplify the selective range of frequencies, the resistive load R C is replaced by a tuned circuit. The tuned circuit is capable of amplifying a signal over a narrow
More informationDesign of Frequency and Polarization Tunable Microstrip Antenna
Design of Frequency and Polarization Tunable Microstrip Antenna M. S. Nishamol, V. P. Sarin, D. Tony, C. K. Aanandan, P. Mohanan, K. Vasudevan Abstract A novel compact dual frequency microstrip antenna
More informationA Reduced Intermodulation Distortion Tunable Ferroelectric Capacitor Architecture and Demonstration
2568 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 51, NO. 12, DECEMBER 2003 A Reduced Intermodulation Distortion Tunable Ferroelectric Capacitor Architecture and Demonstration Yong-Kyu Yoon,
More informationA 2.4 GHz to 3.86 GHz digitally controlled oscillator with 18.5 khz frequency resolution using single PMOS varactor
LETTER IEICE Electronics Express, Vol.9, No.24, 1842 1848 A 2.4 GHz to 3.86 GHz digitally controlled oscillator with 18.5 khz frequency resolution using single PMOS varactor Yangyang Niu, Wei Li a), Ning
More informationDESIGN AND MANUFACTURE OF THE WIDE-BAND APERTURE-COUPLED STACKED MICROSTRIP AN- TENNA
Progress In Electromagnetics Research C, Vol. 7, 37 50, 2009 DESIGN AND MANUFACTURE OF THE WIDE-BAND APERTURE-COUPLED STACKED MICROSTRIP AN- TENNA F. Zhao, K. Xiao, W.-J. Feng, S.-L. Chai, and J.-J. Mao
More informationSwitchable Dual-Band Filter with Hybrid Feeding Structure
International Journal of Information and Electronics Engineering, Vol. 5, No. 2, March 215 Switchable Dual-Band Filter with Hybrid Feeding Structure Ming-Lin Chuang, Ming-Tien Wu, and Pei-Ru Wu Abstract
More informationPlanar Wideband Balun with Novel Slotline T-Junction Transition
Progress In Electromagnetics Research Letters, Vol. 64, 73 79, 2016 Planar Wideband Balun with Novel Slotline T-Junction Transition Ya-Li Yao*, Fu-Shun Zhang, Min Liang, and Mao-Ze Wang Abstract A planar
More information2-6 GHz GaN HEMT Power Amplifier MMIC with Bridged-T All-Pass Filters and Output-Reactance- Compensation Shorted Stubs
JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, VOL.16, NO.3, JUNE, 2016 ISSN(Print) 1598-1657 http://dx.doi.org/10.5573/jsts.2016.16.3.312 ISSN(Online) 2233-4866 2-6 GHz GaN HEMT Power Amplifier MMIC
More informationCompact Ultra-Wideband Antenna With Dual Band Notched Characteristic
Compact Ultra-Wideband Antenna With Dual Band Notched Characteristic Sagar S. Jagtap S. P. Shinde V. U. Deshmukh V.P.C.O.E. Baramati, Pune University, Maharashtra, India. Abstract A novel coplanar waveguide
More informationNovel Compact Tri-Band Bandpass Filter Using Multi-Stub-Loaded Resonator
Progress In Electromagnetics Research C, Vol. 5, 139 145, 214 Novel Compact Tri-Band Bandpass Filter Using Multi-Stub-Loaded Resonator Li Gao *, Jun Xiang, and Quan Xue Abstract In this paper, a compact
More informationDEFECTED MICROSTRIP STRUCTURE BASED BANDPASS FILTER
DEFECTED MICROSTRIP STRUCTURE BASED BANDPASS FILTER M.Subhashini, Mookambigai college of engineering, Tamilnadu, India subha6688@gmail.com ABSTRACT A defected microstrip structure (DMS) unit is proposed
More informationPeriodic EBG Structure based UWB Band Pass Filter Sridhar Raja.D
Periodic EBG Structure based UWB Band Pass Filter Sridhar Raja.D Asst. Professor, Bharath University, Chennai-600073, India ABSTRACT: In this paper microstrip bandpass filter as been proposed for UWB application
More information