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Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
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MINIATURIZED DUAL-BAND MATCHING TECHNIQUE BASED ON COUPLED-LINE TRANSFORMER FOR DUAL-BAND POWER AMPLIFIERS DESIGN

By S. Li, B. Tang, Y. Liu, S. Li, C. Yu, and Y. Wu

Full Article PDF (485 KB)

Abstract:
This study presents a novel miniaturized dual-band coupled-line impedance transformer. This dual-band matching technique uses the characteristics of coupled-line and dual-band stubs to realize matching arbitrary complex impedance to arbitrary complex impedance at two arbitrary uncorrelated frequencies. Especially, it satisfies the demand of dual-band matching at two relatively closed operating frequencies (n= f2 / f1 ≤ 1.2), and occupy a very small circuit area with inherent DC-Block function. The proposed synthesis approach is validated by the design and fabrication of a 30 W gallium nitride (GaN)-based class-AB power amplifier (PA) for GSM and WCDMA at 1800 MHz and 2140 MHz. The PA's output matching network based on the proposed structure can accurately match 50 Ω to the ideal load impedances of the transistor at two designed frequency simultaneously and has 20% and 15% bandwidth for which the reflection coefficient magnitudes are less than 0.1, respectively.

Citation:
S. Li, B. Tang, Y. Liu, S. Li, C. Yu, and Y. Wu, "Miniaturized Dual-Band Matching Technique Based on Coupled-Line Transformer for Dual-Band Power Amplifiers Design," Progress In Electromagnetics Research, Vol. 131, 195-210, 2012.
doi:10.2528/PIER12072004
http://www.jpier.org/PIER/pier.php?paper=12072004

References:
1. Orfanidis, , S. J., , "A two-section dual-band Chebyshev impedance transformer," IEEE Microwave and Wireless Components Letters,, Vol. 13, No. 9, 382-384, 2003.
doi:10.1109/LMWC.2003.817135

2. Monzon, , C., , "A small dual-frequency transformer in two sections," IEEE Transactions on Microwave Theory and Techniques, Vol. 51, No. 4, 1157-1161, , 2003.
doi:10.1109/TMTT.2003.809675

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

4. Liu, , X., Y. Liu, S. Li, F. Wu, and Y. Wu, "A three-section dual-band transformer for frequency-dependent complex load impedance," IEEE Microwave and Wireless Components Letters, Vol. 19, No. 10, 611-613, , 2009.
doi:10.1109/LMWC.2009.2029732

5. Wu, Y., Y. Liu, and S. Li, "A compact pi-structure dual band transformer," Progress In Electromagnetics Research, Vol. 88, 121-134, 2008.
doi:10.2528/PIER08102601

6. Chuang, M.-L., "Dual-band impedance transformer using two-section shunt stubs," IEEE Transactions on Microwave Theory and Techniques, Vol. 58, No. 5, 1257-1263, 2010.
doi:10.1109/TMTT.2010.2045560

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

8. Rawat, , K., F. M. Ghannouchi, and , "Dual-band matching technique based on dual-characteristic impedance transformers for dual-band power amplifiers design," IET Microwaves, Antennas & Propagation, Vol. 5, No. 14, 1720-1729, , 2011.
doi:10.1049/iet-map.2011.0099

9. Nikravan, , M. A. and Z. Atlasbaf, "T-section dual-band impedance transformer for frequency-dependent complex impedance loads," Electronics Letters, Vol. 47, No. 9, 551-553, 2011.
doi:10.1049/el.2010.7452

10. Wang, , Z. , C. Park, and , "Dual-band GaN HEMT power amplifier using resonators in matching networks," 2011 IEEE 12th Annual Wireless and Microwave Technology Conference (WAMICON), 1-4, 2011.

11. 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 e±ciency class ce power ampli¯er based on CRLH diplexer," Progress In Electromagnetics Research, Vol. 97, 217-240, 2009.
doi:10.2528/PIER09071609

12. Castaldi, , G., , V. Fiumara, and I. Gallina, "An exact synthesis method for dual-band Chebyshev impedance transformers," Progress In Electromagnetics Research, Vol. 86, 305-319, 2008..
doi:10.2528/PIER08100605

13. Fukuda, , A., , H. Okazaki, S. Narahashi, and T. Nojima, "Concurrent multi-band power amplifier employing multi-section impedance transformer ," 2011 IEEE Topical Conference on Power Ampli¯ers for Wireless and Radio Applications (PAWR), 37-40, 2011.
doi:10.1109/PAWR.2011.5725389

14. Ciccognani, , W., , E. Limiti, and L. Scucchia, "A new structure for the design of dual band power amplifiers," Workshop on Integrated Nonlinear Microwave and Millimetre-wave Circuits (INMMIC),, 1-4, 2011.
doi:10.1109/INMMIC.2011.5773309

15. Ye, , C.-S., , Y.-K. Su, M.-H. Weng, C.-Y. Hung, and R.-Y. Yang, "Design of the compact parallel-coupled lines wideband bandpass ¯lters using image parameter method," Progress In Electromagnetics Research, Vol. 100, 153-173, 2010.
doi:10.2528/PIER09073002

16. Wu, , Y. , Y. Liu, and , "An unequal coupled-line Wilkinson power divider for arbitrary terminated impedances," Progress In Electromagnetics Research,, Vol. 117, 181-194, 2011.

17. Wong, , Y. S., S. Y. Zheng, and W. S. Chan, "Multifolded bandwidth branch line coupler with filtering characteristic using coupled port feeding," Progress In Electromagnetics Research, Vol. 118, 17-35, , 2011.
doi:10.2528/PIER11041401

18. Wu, , Y. , Y. Liu, and , "A coupled-line band-stop filter with three-section transmission-line stubs and wide upper pass-band performance," Progress In Electromagnetics Research, Vol. 119, 407-421, 2011..
doi:10.2528/PIER11072003

19. Kuo, , J.-T., , C.-Y. Fan, and S.-C. Tang, "Dual-wideband bandpass ¯lters with extended stopband based on coupled-line and coupled three-line resonators," Progress In Electromagnetics Research, , Vol. 124, 1-15, , 2012.
doi:10.2528/PIER11120103

20. Li, , B., , X. Wu, N. Yang, and W. Wu, , "Dual-band equal/unequal Wilkinson power dividers based on coupled-line section with short-circuited stub," Progress In Electromagnetics Research, Vol. 11, 163-178, , 2011..
doi:10.2528/PIER10110108

21. Lin, , Z. , Q.-X. Chu, and , "A novel approach to the design of dual-band power divider with variable power dividing ratio based on coupled-lines," Progress In Electromagnetics Research, Vol. 103, 271-284, , 2010.
doi:10.2528/PIER10012202

22. Cree, "CGH27030 GaN HEMT for linear communications ranging from VHF to 3 GHz," Rev. 3.5, , 2011.

23. Wu, , Y., , Y. Liu, S. Li, and S. 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

24. Pozar, , D. M., , Microwave Engineering, , 3rd Ed., John Wiley & Sons, Inc., , 2005.

25. Steve, C. C., , RF Power Amplifiers for Wireless Communications,, 2nd Ed., 103-104, , Artech House, Inc., 2006..


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