The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Design of the 10MHz and 10W Power Source for Short Distance Wireless Power Transmission

근거리 무선 전력 전송을 위한 평형 증폭기 구조의 10MHz 10W급 전력원 설계

  • 박동훈 (서울시립대 전자전기컴퓨터공학부) ;
  • 김귀성 ((주)엠가드) ;
  • 임은천 (서울시립대 전자전기컴퓨터공학부) ;
  • 박혜미 (서울시립대 전자전기컴퓨터공학부) ;
  • 이문규 (서울시립대학교 전자전기컴퓨터공학부)
  • Received : 2011.09.27
  • Accepted : 2012.02.21
  • Published : 2012.03.01
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Abstract

In this paper, we have designed and manufactured 10MHz power source for the application of short distance wireless power transmission. The designed power source consists of a DDS(direct digital synthesizer) signal generator, a buffer driver and a balanced power amplifier. Short range wireless power transmission is usually carried out by near-field inductive coupling between source and load. The distance variation between source and load gives rise to the change of load impedance of power amplifier, which has effect on the operation of power amplifier. To overcome this problem due to load variation of power amplifier, we have adopted the balanced power amplifier using the quadrature hybrid implemented by lumped capacitors and a mutually coupled coil. The experiment results show the above 40dBm output power, frequency range of 9 to 11MHz, and total DC power consumption of 36W.

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References

  1. 조덕창, "무선전력 전송기술", 정보통신연구진흥원 학술정보 전파지, 제 2002권 104호.
  2. 강승열, 김용해, 이명래, 정태형, "무선 에너지 전송 기술", ETRI 전자통신동향분석, 제 23권 6호, 2008년 12월.
  3. Guillermo Gonzallez, "Microwave Transistor Amplifiers Analysis and Design", Prentice Hall, Second Edition, 1996.
  4. David M. Pozar, "Microwave Engineering", John Wiley&Sons,Inc. Third Edition, 2006.
  5. Peter Vizmuller, "RF Design Guide System, Circuit, and Equations", Artech House, 1995.