Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
권호 표지
DOI QR코드

DOI QR Code

Implementation of An Water-Cooled High Power Amplifier for Particle Accelerator

입자 가속기용 수냉식 고전력 증폭기 구현

  • Yoon, Young-Chul (Department of Electronic Engineering, Catholic Kwandong University) ;
  • Kim, Young (School of Electronic Engineering, Kumoh National Institute of Technology)
  • 윤영철 (가톨릭관동대학교 전자공학과) ;
  • 김영 (금오공과대학교 전자공학부)
  • Received : 2016.12.30
  • Accepted : 2017.02.09
  • Published : 2017.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

This paper describes implementation of a 165 MHz, 5 kW RF high power amplifier (HPA) for particle accelerator applications. The HPA consists of a drive amplifier for main amplifiers driving, sixteen 600 W class-AB push-pull power amplifier pallets and Wilkinson power divider/combiner using lumped LC components, which are divided/combined power amplifier pallet outputs. To detected the amplifier circuit of normal and reflected output power conditions, we used a bidirectional coupler. To radiate heat of main power amplifier, we were used an water-cooled copper plates to go through a water for radiation of heat. The HPA of center frequency 165 MHz has archived an efficiency of 62.5 % at 5 kW of power level experimentally.

본 논문은 입자 가속기에 이용되는 165 MHz, 5 kW 고전력 증폭기의 제작에 대한 내용을 서술하였다. 이 고전력 증폭기 구성은 주 증폭기를 구동할 수 있는 드라이브 증폭기 모듈, 16개의 600 W 클래스 AB 푸쉬풀 증폭기 모듈 그리고 이 모듈 출력을 분배 또는 결합하기 위해 집중소자 LC로 구현한 입출력의 윌킨슨 결합기로 구성되어 있다. 그리고 정상적인 출력과 부하에서 반사되는 전력을 감시하여 증폭기를 보호하기 위한 방향성 결합기가 구성되어있으며, 600 W 주 증폭기는 입력전원에 의해서 발생되는 열을 방출시키기 위해서 방열판 밑에 물을 통과시키는 관을 넣어 방열하는 워터 쿨링 방법을 사용하였다. 여기서 구현된 증폭기는 중심주파수 165 MHz에서 포화 전력레벨이 5.0 kW 출력레벨에서 62.5 %의 효율을 얻었다.

Keywords

References

  1. Y. S. Kim, In non-communication, state survey of RF application equipment and grouping system research, Korea Radio Promotion Association, 2008.
  2. H. J. Lim and M. H. Lee, "In advanced non-communication, state survey of RF application equipment and technology trend," Korea Communications Agency, Vol. 72, pp. 44-62, 2014.
  3. M. H. Chun, K. H. Park, I. H. Yu, Y. S. Lee, D. S. Kim, M. H. Seo, Y. J. Moon, J. W, Ok, M. S. Won, J. Hong, B. S. Lee, and J. Bahng, "Design study on a high power RF amplifier for the RFQ," in Proceedings of IPAC 2015, Richmond: VA, pp.3009-3011, 2015.
  4. R. J. Pasquinelli, "RF power sources for project X," Project X Machine Advisory Committee, Mar. 2012.
  5. Econinfar Holdings, MEGA Polymer Resin (MPR) [internet]. Available: http://www.ecoinfra.com.
  6. NXP Circuit Information: 2 Meter Amateur Reference Design, High Ruggedness N-Channel Enhancement-Mode Lateral MOSFETs, Technical Data, pp.1-16, June 2011.
  7. F. H. Raab, "Transmitter architectures for high efficiency amplification," Green Mountain Research Company, pp. 1-21, 2006.
  8. K.Narendra, L. Anand, L. Joshua, T. Tan and G. Boeck, "Adaptive LDMOS Power Amplifier with Constant Efficiency," in 2007 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference, Salvador: Brazil, pp.861-864, 2007.
  9. A. Jain, D. K. Sharma, A. K. Gupta, P. R. Hannurkar and S. K. Pathak, "Compact solid state radio frequency amplifiers in kW regime for particle accelerator subsystems," Indian Academy of Science, Vol. 38. Part 4, pp.667-678, Aug. 2013.
  10. B. Popovic and G. Waldschmidt, "RF solid state driver for argonne light source," in Proceedings of 2011 Particle Accelerator Conference, New York: NY, pp. 1097-1099, 2011.
  11. F. Noriega and P. J. Gonzalez, "Designing LC Wilkinson Power Splitters," RF Design, pp.18-24, Aug. 2002.
  12. M. M. Elsbury, P.D. Dresselhaus, N. F. Bergren, C. J. Burroughs, S. P. Benz, and Z. Popovic, "Broadband lumped-element integrated N-way power dividers for voltage standards," IEEE Transactions on Microwave Theory and Techniques, Vol. 57, No. 8, pp. 2055-2063, Aug. 2009. https://doi.org/10.1109/TMTT.2009.2025464
  13. Microwave101, Unequal, N-way Gysel power divider [internet]. Available: https://microwaves101.com/encylopedias/unequal,-n-way-gysel-power-divider.
  14. U.H Gysel, "A new N-way power divider/combiner suitable for high-power applications," in 1975 IEEE-MTT-S International Microwave Symposium, Palo Alto: CA, pp.116-118, May 1975.
  15. Santron, LC series RF Coaxial Connector [internet]. Available: http://santron.com/LC-RF-coaxial-connector/.
  16. Wikipedia, 7/16 DIN Connector [internet]. Available: http://en.wikipedia.org/wiki/7/16_DIN_connector.