Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Design of power amplifier and antenna for wireless power transmission in 125kHz

125kHz대에서 무선전력전송을 위한 전력증폭기와 송수신 Antenna 설계

  • 임상욱 (충남대학교 전기공학과) ;
  • 김용상 (충남대학교 전기공학과) ;
  • 김도훈 (충남대학교 전기공학과) ;
  • 김양모 (충남대학교 전기공학과)
  • Published : 2003.11.21
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Abstract

Wireless power transmission system is one of the very interesting field not only in a technical and economical point of view but also that people are still trying to realize lossless power transmission. This paper has a purpose on the efficient power transmission at the passive type ICcard by using wireless power transmission system. The most difficult but important part of the passive type RF-ID system is building the system that supplies power from Reader-antenna to IDcard-antenna. To check what is the most efficient way to deliver power depending on what kind of specifications of the power-amp in reader, antenna and antenna in IDcard is for operating IDcard circuit efficiently receiving the power from reader-antenna. For this, we used 125kHz sinewave for RF signal as a basic specification, power-amp : OP-Amp for amplifying signal and AB Class push-pull power-amp for amplifying power, loop type antenna.

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