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PIER PIER B PIER C PIER M PIER Letters
2010-06-12
Bandwidth Enhancement of an Analog Feedback Amplifier by Employing a Negative Group Delay Circuit
By
Heungjae Choi,

    Dr. Heungjae Choi

    School of Engineering

    Cardiff University

    UK

    Homepage

Yongchae Jeong,

    Prof. Yongchae Jeong

    Division of Electronics and Information Engineering

    Chonbuk National University

    South Korea

    Homepage

Chul Dong Kim,

    Dr. Chul Dong Kim

    Sewon Teletech, Inc.

    South Korea

    Homepage

James Stevenson Kenney

    Dr. James Stevenson Kenney

    Georgia Institute of Technology

    Homepage

Progress In Electromagnetics Research, Vol. 105, 253-272, 2010
doi:10.2528/PIER10041808
Abstract
We will demonstrate an alternative topology to greatly increase the operating bandwidth of an analog RF feedback power amplifier. A limited operating bandwidth due to the group delay mismatch of a feedback loop discouraged the use of an RF feedback technique in spite of its powerful linearization performance and great tolerance capability. By introducing a negative group delay circuit (NGDC) in the feedback loop, group delay match condition could be satisfied. With the fabricated 2-stage distributed element negative group delay circuit with a 30MHz of bandwidth and a -9 ns of group delay for a wideband code division multiple access (WCDMA) downlink band, the proposed feedback amplifier with the proposed topology experimentally achieved an adjacent channel leakage ratio of -53.2 dBc with a cancellation bandwidth of over 50 MHz.
Citation
Heungjae Choi, Yongchae Jeong, Chul Dong Kim, and James Stevenson Kenney, "Bandwidth Enhancement of an Analog Feedback Amplifier by Employing a Negative Group Delay Circuit," Progress In Electromagnetics Research, Vol. 105, 253-272, 2010.
doi:10.2528/PIER10041808
References

1. Liu, T., S. Boumaiza, and F. M. Ghannouchi, "Deembedding static nonliearities and accurately identifying and modeling memory e®ects in wideband RF transmitters," IEEE Trans. Microw. Theory Tech., Vol. 53, No. 11, 3578-3587, Nov. 2005.

2. Black, H. S., Translating system, U.S. Patent 1,686,792, Oct. 19, 1928.

3. Seidel, H., "A microwave feedforward experiment," Bell Syst. Tech. J., Vol. 50, 2879-2916, 1971.

4. Cripps, S. C., Advanced Techniques in RF Power Amplifier Design, Artech House, Norwood, MA, 2006.

5. Pothecary, N., Feedforward Linear Power Amplifiers, 125-138, Artech House, 1999.

6. Kenington, P. B., High-linearity RF Amplifier Design, Artech House, 2000.

7. Hau, Y. K. G., V. Postoyalko, and J. R. Richardson, "Sensitivity of distortion cancellation in feedforward amplifiers to loops imbalances," IEEE MTT-S Int. Microwave Symp. Dig., 1695-1698, 1997.

8. Kang, S. G., I. K. Lee, and K. S. Yoo, "Analysis and design of feedforward power amplifier," IEEE MTT-S Int. Microwave Symp. Dig., 1519-1522, 1997.

9. Konstantinou, K. and D. K. Paul, "Analysis and design of broadband, high efficiency feedforward amplifiers," IEEE MTT-S Int. Microwave Symp. Dig., 867-870, 1996.

10. Andrenko, A. S., K. Horiguchi, M. Nakayama, Y. Ikeda, and O. Ishida, "Optimization analysis of feedforward power amplifier," IEEE MTT-S Int. Microwave Symp. Dig., 626-629, 1999.

11. Jeong, Y., D. Ahn, C. D. Kim, and I. Chang, "Feedforward amplifier using equal group- delay signal canceller," IEEE MTT-S Int. Microwave Symp. Dig., 1530-1533, 2006.
doi:10.1109/MWSYM.2006.249604

12. Choi, H., Y. Jeong, J. S. Kenney, and C. D. Kim, "Dual-band feedforward linear power amplifier for digital cellular and IMT-2000 base-station," Microw. Optical Technol. Lett., Vol. 51, No. 4, Apr. 2009.

13. Choi, H., Y. Jeong, J. S. Kenney, and C. D. Kim, "Cross cancellation technique employing an error amplifier," IEEE Microw. Wireless Compon. Lett., Vol. 18, No. 7, 488-490, Jul. 2008.
doi:10.1109/LMWC.2008.925098

14. Seidel, H. and N. J. Warren, Reentrant signal feedback amplifier, U.S. Patent 3,624,532, Nov. 30, 1971.

15. Seidel, H. and N. J. Warren, Feedback amplifier, U.S. Patent 3,656,831, Apr. 18, 1972.

16. McRory, J. G. and R. H. Johnston, "An RF amplifier for low intermodulation distortion," IEEE MTT-S Int. Microwave Symp. Dig., 1741-1744, 1994.

17. Kim, Y., Y. Yang, S. Kang, and B. Kim, "Linearization of 1.85 GHz amplifier using feedback predistortion loop," IEEE MTT-S Int. Microwave Symp. Dig., 1675-1678, 1998.

18. Qiang, L., Z. Z. Ying, and G. Wei, "Design of a feedback predistortion linear power amplifier," Microwave J., Vol. 48, No. 5, 232-241, May 2005.

19. Ezzeddine, A. K., H. Hung, and H. Huang, "An MMAC C-band FET feedback power amplifier," IEEE Trans. Microw. Theory Tech., Vol. 38, No. 4, 350-357, Apr. 1990.
doi:10.1109/22.52574

20. Faulkner, M., D. contos, and M. Johansson, "Linearisation of power amplifiers using RF feedback," Electronics Lett., Vol. 31, No. 23, 2023-2024, Nov. 1995.
doi:10.1049/el:19951402

21. Solli, D. and R. Y. Chiao, "Superluminal effects and negative group delays in electronics, and their applications," Physical Review E, Vol. 66, No. 5, 056601.1-056601.4, Nov. 2002.

22. Brillouin, L. and A. Sommerfeld, Wave Propagation and Group Velocity, 113-137, Academic Press, Network, 1960.

23. Lucyszyn, S., I. D. Robertson, and A. H. Aghvami, "Negative group delay synthesizer," IEE Electron. Lett., Vol. 29, No. 9, 798-800, Apr. 1993.
doi:10.1049/el:19930533

24. Wang, L. J., A. Kuzmich, and A. Dogariu, "Gain-assisted superluminal light propagation," Nature, Vol. 406, No. 6793, 277-279, Jun. 2000.
doi:10.1038/35018520

25. Kitano, M., T. Nakanishi, and K. Sugiyama, "Negative group delay and superluminal propagation: An electronic circuit approach," IEEE Journal of Selected Topics in Quantum Electronics, Vol. 9, No. 1, 43-51, Jan. 2003.
doi:10.1109/JSTQE.2002.807979

26. Noto, H., K. Yamauchi, M. Nakayama, and Y. Isota, "Negative group delay circuit for feed-forward amplifier," IEEE Int. Microwave Symp. Dig., 1103-1106, 2007.

27. Ravelo, B., A. Perennec, and M. Le Roy, "Synthesis of broadband negative group delay active circuits," IEEE Int. Microwave Symp. Dig., 2177-2180, 2007.

28. Ravelo, B., A. Perennec, M. Le Roy, and Y. Boucher, "Active microwave circuit with negative group delay," IEEE Microw. Wireless Compon. Lett., Vol. 17, No. 12, 861-863, Dec. 2007.
doi:10.1109/LMWC.2007.910489

29. Ravelo, B., A. Perennec, and M. Le Roy, "Negative group delay active topologies respectively dedicated to microwave frequencies and baseband signals ," Journal of EuMA, Vol. 4, 124-130, Jun. 2008.

30. Ravelo, B., M. Le Roy, and A. Perennec, "Application of negative group delay active circuits to the design of broadband and constant phase shifters ," Microw. Optical Technol. Lett., Vol. 50, No. 12, 3078-3080, Dec. 2008.
doi:10.1002/mop.23883

31. Choi, H., K. Song, C. D. Kim, and Y. Jeong, "Synthesis of negative group delay time circuit," Asia-Pacific Microwave Conf. Dig., B5-08 2008.

32. Choi, H., S. Shim, Y. Jeong, and C. D. Kim, "Synthesis of reflection type negative group delay circuit using transmission line resonator ," Proc. 39th European Microwave Conf., 902-905, Sep. 2009.

33. Jeong, Y., H. Choi, and C. D. Kim, "Experimental verification for time advancement of negative group delay circuit in RF electronic circuits ," IET Electron. Lett., Vol. 46, No. 4, 306-307, Feb. 2010.
doi:10.1049/el.2010.3147

34. Matthaei, G., L. Young, and E. M. T. Jones, Microwave Filters, Impedance-matching Networks, and Coupling Structures, Artech House, Dedham, MA, 1980.

35. Choi, H., Y. Kim, Y. Jeong, J. Lim, and C. D. Kim, "A compact DGS load-network for highly efficient class-E power amplifier," Proc. 39th European Microwave Conf., 1353-1356, Sep. 2009.

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