Search search
submit Submit
Publication Date
to
Vol. 119
Latest Volume
All Volumes
PIER 179 [2024] PIER 178 [2023] PIER 177 [2023] PIER 176 [2023] PIER 175 [2022] PIER 174 [2022] PIER 173 [2022] PIER 172 [2021] PIER 171 [2021] PIER 170 [2021] PIER 169 [2020] PIER 168 [2020] PIER 167 [2020] PIER 166 [2019] PIER 165 [2019] PIER 164 [2019] PIER 163 [2018] PIER 162 [2018] PIER 161 [2018] PIER 160 [2017] PIER 159 [2017] PIER 158 [2017] PIER 157 [2016] PIER 156 [2016] PIER 155 [2016] PIER 154 [2015] PIER 153 [2015] PIER 152 [2015] PIER 151 [2015] PIER 150 [2015] PIER 149 [2014] PIER 148 [2014] PIER 147 [2014] PIER 146 [2014] PIER 145 [2014] PIER 144 [2014] PIER 143 [2013] PIER 142 [2013] PIER 141 [2013] PIER 140 [2013] PIER 139 [2013] PIER 138 [2013] PIER 137 [2013] PIER 136 [2013] PIER 135 [2013] PIER 134 [2013] PIER 133 [2013] PIER 132 [2012] PIER 131 [2012] PIER 130 [2012] PIER 129 [2012] PIER 128 [2012] PIER 127 [2012] PIER 126 [2012] PIER 125 [2012] PIER 124 [2012] PIER 123 [2012] PIER 122 [2012] PIER 121 [2011] PIER 120 [2011] PIER 119 [2011] PIER 118 [2011] PIER 117 [2011] PIER 116 [2011] PIER 115 [2011] PIER 114 [2011] PIER 113 [2011] PIER 112 [2011] PIER 111 [2011] PIER 110 [2010] PIER 109 [2010] PIER 108 [2010] PIER 107 [2010] PIER 106 [2010] PIER 105 [2010] PIER 104 [2010] PIER 103 [2010] PIER 102 [2010] PIER 101 [2010] PIER 100 [2010] PIER 99 [2009] PIER 98 [2009] PIER 97 [2009] PIER 96 [2009] PIER 95 [2009] PIER 94 [2009] PIER 93 [2009] PIER 92 [2009] PIER 91 [2009] PIER 90 [2009] PIER 89 [2009] PIER 88 [2008] PIER 87 [2008] PIER 86 [2008] PIER 85 [2008] PIER 84 [2008] PIER 83 [2008] PIER 82 [2008] PIER 81 [2008] PIER 80 [2008] PIER 79 [2008] PIER 78 [2008] PIER 77 [2007] PIER 76 [2007] PIER 75 [2007] PIER 74 [2007] PIER 73 [2007] PIER 72 [2007] PIER 71 [2007] PIER 70 [2007] PIER 69 [2007] PIER 68 [2007] PIER 67 [2007] PIER 66 [2006] PIER 65 [2006] PIER 64 [2006] PIER 63 [2006] PIER 62 [2006] PIER 61 [2006] PIER 60 [2006] PIER 59 [2006] PIER 58 [2006] PIER 57 [2006] PIER 56 [2006] PIER 55 [2005] PIER 54 [2005] PIER 53 [2005] PIER 52 [2005] PIER 51 [2005] PIER 50 [2005] PIER 49 [2004] PIER 48 [2004] PIER 47 [2004] PIER 46 [2004] PIER 45 [2004] PIER 44 [2004] PIER 43 [2003] PIER 42 [2003] PIER 41 [2003] PIER 40 [2003] PIER 39 [2003] PIER 38 [2002] PIER 37 [2002] PIER 36 [2002] PIER 35 [2002] PIER 34 [2001] PIER 33 [2001] PIER 32 [2001] PIER 31 [2001] PIER 30 [2001] PIER 29 [2000] PIER 28 [2000] PIER 27 [2000] PIER 26 [2000] PIER 25 [2000] PIER 24 [1999] PIER 23 [1999] PIER 22 [1999] PIER 21 [1999] PIER 20 [1998] PIER 19 [1998] PIER 18 [1998] PIER 17 [1997] PIER 16 [1997] PIER 15 [1997] PIER 14 [1996] PIER 13 [1996] PIER 12 [1996] PIER 11 [1995] PIER 10 [1995] PIER 09 [1994] PIER 08 [1994] PIER 07 [1993] PIER 06 [1992] PIER 05 [1991] PIER 04 [1991] PIER 03 [1990] PIER 02 [1990] PIER 01 [1989]
All Journals
PIER PIER B PIER C PIER M PIER Letters
2011-07-25
A Novel High-Power Amplifier Using a Generalized Coupled-Line Transformer with Inherent DC-Block Function
By
Yongle Wu,

    Prof. Yongle Wu

    School of Electronic Engineering,

    Beijing University of Posts and Telecommunications

    China

    Homepage

Yuan'an Liu,

    Dr. Yuan'an Liu

    School of Telecommunication Engineering,

    Beijing University of Posts and Telecommunications

    China

    Homepage

Shun Li,

    Mr. Shun Li

    School of Electronic Engineering

    Beijing University of Posts and Telecommunications

    China

    Homepage

Shulan Li

    Dr. Shulan Li

    School of Electronic Engineering

    Beijing University of Posts and Telecommunications

    China

    Homepage

Progress In Electromagnetics Research, Vol. 119, 171-190, 2011
doi:10.2528/PIER11050409
Abstract
The purpose of this paper is to propose a novel generalized single-band transformer for two arbitrary complex load and source impedances and a novel high-power amplifier using this new transformer. By adding two reactive parts at across terminals, the coupled line with flexible electrical length has practical even- and odd-mode characteristic impedances. Thus, the total circuit layout can be realized on common printed circuit board without any restriction. The synthesis theory of this proposed transformer is complete and analytical. Furthermore, unlike conventional quarter-wavelength transformers, this structure exhibits four main features such as effective matching for extremely low-resistive load impedance, effective matching for extremely high-resistive load impedance, tunable characteristic for equivalent electrical length and inherent DC-block function. For theoretical verification, several impedance transformers, which include some fixed operating-frequency cases and a tunable case, for smaller than 7 Ohm or larger than 1500 Ohm, are presented. As a typical experimental example, this analyzed transformer with inherent DC-block function has been applied in a 4-Watt power amplifier as output matching structure.
Citation
Yongle Wu, Yuan'an Liu, Shun Li, and Shulan Li, "A Novel High-Power Amplifier Using a Generalized Coupled-Line Transformer with Inherent DC-Block Function," Progress In Electromagnetics Research, Vol. 119, 171-190, 2011.
doi:10.2528/PIER11050409
References

1. Gao, B. and Y. Xin, "Improved miniaturized wide-band 90-degree Schiffman phase shifter," Journal of Electromagnetic Waves and Applications, Vol. 23, No. 4, 493-499, 2009.
doi:10.1163/156939309787612374

2. Jafari, E., F. Hojatkashani, and R. Rezaiesarlak, "A wideband compact planar balun for UHF DTV applications," Journal of Electromagnetic Waves and Applications, Vol. 23, No. 14-15, 2047-2053, 2009.
doi:10.1163/156939309789932566

3. Yoon, J., H. Seo, I. Choi, and B. Kim, "Wideband LNA using a negative GM cell for improvement of linearity and noise figure," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 5-6, 619-630, 2010.
doi:10.1163/156939310791036412

4. Lee, M.-W., S.-H. Kam, Y.-S. Lee, and Y.-H. Jeong, "A highly efficient three-stage Doherty power amplifier with flat gain for WCDMA applications," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 17-18, 2537-2545, 2010.
doi:10.1163/156939310793675619

5. Zhang, B., Y.-Z. Xiong, L.Wang, S. Hu, T.-G. Lim, Y.-Q. Zhuang, and L.-W. Li, "A D-band power amplifier with 30-GHz bandwidth and 4.5-dBm Psat for high-speed communication system," Progress In Electromagnetics Research, Vol. 107, 161-178, 2010.
doi:10.2528/PIER10060806

6. Jimenez Martin, J. L., V. Gonzalez-Posadas, J. E. Gonzalez-Garcia, F. J. Arques-Orobon, L. E. Garcia-Munoz, and D. Segovia-Vargas, "Dual band high efficiency class ce power amplifier based on CRLH diplexer," Progress In Electromagnetics Research, Vol. 97, 217-240, 2009.
doi:10.2528/PIER09071609

7. Abdalla, M. A. and Z. Hu, "Multi-band functional tunable LH impedance transformer," Journal of Electromagnetic Waves and Applications, Vol. 23, No. 1, 39-47, 2009.
doi:10.1163/156939309787604652

8. Pozar, D. M., Microwave Engineering, 3rd Ed., Nos. 2-5, 187-418, Publishing House of Electronics Industry, 2006.

9. Wu, Y., Y. Liu, and S. Li, "A dual-frequency transformer for complex impedances with two unequal sections," IEEE Microw. Wireless Compon. Lett., Vol. 19, No. 2, 77-79, 2009.
doi:10.1109/LMWC.2009.2034034

10. Wu, Y., Y. Liu, S. Li, C. Yu, and X. Liu, "A generalized dual-frequency transformer for two arbitrary complex frequency-dependent impedances," IEEE Microw. Wireless Compon. Lett., Vol. 19, No. 12, 792-794, 2009.
doi:10.1109/LMWC.2009.2034034

11. Chramiec, J. and M. Kitlinski, "Design of quarter-wave compact impedance transformers using coupled transmission lines ," Electronics Letters, Vol. 38, No. 25, 1683-1685, 2002.
doi:10.1049/el:20021119

12. Liu, S. P., "Planar transmission line transformer using coupled microstrip lines," IEEE MTT-S Int. Microw. Symp. Dig., Vol. 2, 789-792, 1998.

13. Ang, K. S., C. H. Lee, Y. C. Leong, and , "Analysis and design of coupled line impedance transformers," IEEE MTT-S Int. Microw. Symp. Dig., Vol. 3, 1951-1954, 2004.

14. Ang, K. S., C. H. Lee, and Y. C. Leong, "A broad-band quarter-wavelength impedance transformer with three reflection zeros within passband," IEEE Trans. Microw. Theory Tech., Vol. 52, No. 12, 2640-2644, 2004.
doi:10.1109/TMTT.2004.837310

15. Jensen, T., V. Zhurbenko, V. Krozer, and P. Meincke, "Coupled transmission lines as impedance transformer," IEEE Trans. Microw. Theory Tech., Vol. 55, No. 12, 2957-2965, 2007.
doi:10.1109/TMTT.2007.909617

16. Best, S. R., "Low Q electrically small linear and elliptical polarized spherical dipole antennas," IEEE Trans. Antennas Propag., Vol. 53, No. 3, 1047-1053, 2005.
doi:10.1109/TAP.2004.842600

17. Steve, C. C., RF Power Amplifiers for Wireless Communications, 2nd Ed., No. 5, 92-100, Artech House Microwave Library, 2006.

18. Freescale Semiconductor "RF LDMOS wideband integrated power amplifiers," Document Number: MW7IC2240N, Rev. 0, 11/2007.

Download Full Article (280) View Full Article volume
The EM Academy piers.org jpier.org Who's Who in EM
Copyright © 2022 The Electromagnetics Academy. All Rights Reserved.