The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Design of Hybrid Supply Modulator for Reconfigurable Power Amplifiers

재구성 전력증폭기용 혼합형 가변 전압 공급기의 설계

  • Son, Hyuk-Su (Intelligent Radio Engineering Center, Korea Advanced Institute of Science and Technology) ;
  • Kim, Woo-Young (Intelligent Radio Engineering Center, Korea Advanced Institute of Science and Technology) ;
  • Jang, Joo-Young (Intelligent Radio Engineering Center, Korea Advanced Institute of Science and Technology) ;
  • Lee, Hae-Jin (Intelligent Radio Engineering Center, Korea Advanced Institute of Science and Technology) ;
  • Oh, Inn-Yeal (Intelligent Radio Engineering Center, Korea Advanced Institute of Science and Technology) ;
  • Park, Chul-Soon (Intelligent Radio Engineering Center, Korea Advanced Institute of Science and Technology)
  • 손혁수 (한국과학기술원 지능형RF연구센터) ;
  • 김우영 (한국과학기술원 지능형RF연구센터) ;
  • 장주영 (한국과학기술원 지능형RF연구센터) ;
  • 이해진 (한국과학기술원 지능형RF연구센터) ;
  • 오인열 (한국과학기술원 지능형RF연구센터) ;
  • 박철순 (한국과학기술원 지능형RF연구센터)
  • Received : 2011.12.27
  • Accepted : 2012.02.16
  • Published : 2012.04.30
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Abstract

This paper presents new type of the hybrid supply modulator for the next reconfigurable transmitters. The efficiency of the hybrid supply modulator is one of the most important performance. For enhancement the efficiency, multi-switching structure in the hybrid supply modulator is employed. Additionally, input envelope signal sensing stage is employed for implementation multi-mode operation. To compare the performance of the proposed hybrid supply modulator, the conventional hybrid supply modulator is also designed. The measured efficiency of the proposed hybrid supply modulator is 85 %/84 %/79 % for EDGE/WCDMA/LTE signals which have 384 kHz/3.84 MHz/5 MHz bandwidth, respectively. The efficiency of the proposed hybrid supply modulator is higher than the conventional hybrid supply modulator. Therefore, this structure shows good candidate for the reconfigurable transmitters.

본 논문은 차세대 재구성 전력증폭기용을 위해서, 새로운 타입의 다중 모드 혼합형 전압 공급기를 제안한다. 이를 위한 핵심 회로인 스위칭 증폭기의 새로운 구조를 제안하였다. 혼합형 전압 공급기의 가장 중요한 성능지표 중의 하나인 효율을 증가시키기 위해 멀티 스위칭 증폭기 구조를 이용하였고, 또한 다중 모드 구현을 위해서 멀티 스위칭 증폭기와 입력 신호 검출단을 이용하였다. 성능 비교를 위해서 기본 구조를 지닌 혼합형 가변전압 공급기도 같이 설계되었으며, 새롭게 제안하는 구조 이외에는 모두 동일하게 설계하여 비교를 용이하도록 하였다. 설계된 혼합형 전압 공급기의 효율을 측정하기 위해 384 kHz/3.84 MHz/5 MHz 대역폭을 가지는 EDGE, WCDMA, LTE 신호를 적용하였다. EDGE를 적용한 효율은 85 %, WCDMA를 적용한 효율은 84 % 그리고 LTE를 적용한 효율은 79 %의 결과를 얻게 되었다. 이는 기본 구조보다 최대 9 %의 성능 향상을 얻었으며, 차세대 재구성 송신기인 다중 대역 및 다중 모드 송신기 구현에 적용 가능함을 입증한다.

Keywords

References

  1. Patrick Y. Wu, Philip K. T. Mok, "A two-phase switching hybrid supply modulator for RF power amplifier with 9 % efficiency improvement", IEEE Journal of Solid-State Circuits, vol. 45, no. 12, pp. 2543-2556, Dec. 2010. https://doi.org/10.1109/JSSC.2010.2076510
  2. J. Choi, B. Kim, "A polar transmitter with CMOS programmable hysteretic-controlled hybrid switching supply modulator for multistandard applications", IEEE Trans. Microwave Theory Tech., vol. 57, no. 7, pp. 1675-1686, Jul. 2009. https://doi.org/10.1109/TMTT.2009.2021880
  3. J. Chen, K. U-yen, and J. S. Kenny, "An envelope elimination and restoration power amplifier using a CMOS dynamic power supply circuit", IEEE MTT-S International Microwave Symposium Dig., pp. 1519-1522, Jun. 2004.
  4. J. Choi, B. Kim, "A delta-sigma digitized polar RF transmitter", IEEE Trans. Microwave Theory Tech., vol. 55, no. 12, pp. 2679-2690, Dec. 2007. https://doi.org/10.1109/TMTT.2007.907137
  5. F. Wang, A. Yang, D. Kimball, L. Larson, and P. Asbeck, "Design of wide bandwidth envelope-tracking power amplifiers for OFDM applications", IEEE Trans. Microwave Theory Tech., vol. 53, pp. 1244-1255, Apr. 2005. https://doi.org/10.1109/TMTT.2005.845716
  6. F. Wang, D. F. Kimball, J. D. Popp, A. H. Yang, D. Y. Lie, P. M. Asbeck, and L. E. Larson, "An improved power-added efficiency 19-dBm hybrid envelope elimination and restoration power amplifier for 802.11g WLAN applications", IEEE Trans. Microwave Theory Tech., vol. 54, no. 12, pp. 4086-4099, Dec. 2006. https://doi.org/10.1109/TMTT.2006.885575
  7. Jerry Lopez, Yan Li, Jeremy D. Popp, Donald Y. C. Lie, Chia-Chang Chuang, Kevin Chen, Stanley Wu, Tzu-Yin Yang, and Gin-Kon Ma, "Design of highly efficient wideband RF polar transmitters using the envelope-tracking technique", IEEE Journal of Solid-State Circuits, vol. 44, no. 9, Sep. 2009.
  8. Y. Li, J. Lopez, and D. Y. C. Lie, "SiGe class-E power amplifier with envelope tracking for mobile Wi- MAX/ WiBro applications", IEEE Int. Symposium on Circuits and Systems, pp. 2017-2020, May 2009.
  9. Tae-Woo Kwak, Min-Chul Lee, and Gyu-Hyeong Cho, "A 2 W CMOS hybrid switching amplitude modulator for EDGE polar transmitters", IEEE Journal of Solid-State Circuits, vol. 42, no. 12, pp. 2666-2676, Dec. 2007. https://doi.org/10.1109/JSSC.2007.908769
  10. R. Gregorian, Introduction to CMOS OP-Amps and Comparators, John Wiley & Sons, pp. 189-198, 1999.
  11. Changsik Yoo, "A CMOS buffer without short-circuit power consumption", IEEE Trans. Circuits and Systems II, vol. 47, no. 9, pp. 935-937, Sep. 2000. https://doi.org/10.1109/82.868462

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