Journal of the Institute of Electronics and Information Engineers (전자공학회논문지)

The Institute of Electronics and Information Engineers (대한전자공학회)
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High PAE Power Amplifier Using Adaptive Bias Control Circuit for Wireless Power Transmission

적응형 바이어스 조절 회로를 사용한 무선에너지 전송용 고효율 전력증폭기

  • Hwang, Hyunwook (Information and Telecommunication Engineering, Soongsil University) ;
  • Seo, Chulhun (Information and Telecommunication Engineering, Soongsil University)
  • 황현욱 (숭실대학교 정보통신전자공학부) ;
  • 서철헌 (숭실대학교 정보통신전자공학부)
  • Received : 2012.10.03
  • Published : 2012.10.25
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Abstract

In this paper, high efficiency power amplifier is implemented with high gain amplifier. Two-stage amplifier using adaptive bias control circuit improve efficiency at low input power. Fixed bias circuit and adaptive bias circuit both have about 76 % efficiency at maximum power level. However amplifier using an adaptive bias control circuit has 70 % at 6 dBm input power level when the amplifier using fixed bias circuit has 50%. The proposed power amplifier using the adaptive bias control circuit can have high efficiency at lower power level.

본 논문에서는 구동 증폭기와 Class-E 전력증폭기를 결합하여 높은 효율의 고이득 이단 전력증폭기를 구현하였다. 고효율 이단 Class-E 전력증폭기의 입력 단에 적응형 바이어스 조절 회로를 적용하여 낮은 입력 전력의 전력효율을 개선하였다. 최대출력인 40 dBm에서 고정 바이어스 전력증폭기와 적응형 바이어스 증폭기 둘 다 약 76 %의 효율을 갖는다. 하지만 적응형 바이어스 조절 회로가 적용된 전력증폭기의 입력전력 6dBm 인가했을 때 효율은 약 70 %이고 고정된 바이어스 입력시에 효율은 약 50 %이다. 바이어스 조절을 통해 낮은 입력에서 높은 효율을 갖는 회로를 설계하였다.

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References

  1. Matthew M. Radmanesh, Radio Frequency and Microwave electronics Illustrated. Prentice Hall PTR, 2001
  2. A. Karalis, J. D. Joannopoulos, M. Soljacic, "Efficient wireless non-radiative mid-range energy transfer," Annals of Physics, vol. 323, no. 1, pp. 34-48, January 2008. https://doi.org/10.1016/j.aop.2007.04.017
  3. B. L. Cannon, J. F. Hoburg, D. D. Stancil, and S. C. Goldstein, "Magnetic resonant coupling as a potential means for wireless power transfer to multiple small receivers," IEEE Transactions on Power Electronics, vol. 24, no. 7, pp. 1819-1825, July 2009. https://doi.org/10.1109/TPEL.2009.2017195
  4. S. C. Cripps, RF Power Amplifiers for Wireless Communications, Artech House, 1999.
  5. A. Grebennikov, N. O. Sokal, Switchmode RF Power Amplifiers, Newnes, 2007.
  6. N. O. Sokal and A. D. Sokal, "Class-E a new class of high-efficiency tuned single-ended switching power amplifiers," IEEE Journal of Solid-State Circuits, vol. 10, no. 3, pp. 168-176, June 1975. https://doi.org/10.1109/JSSC.1975.1050582
  7. N. O. Sokal, "Class-E high-efficiency power amplifiers, from HF to microwave," IEEE MTT-S International Microwave Symposium Digest, vol. 2, pp. 1109-1112, June 1998.