Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Development of Frequency Converter for 2.5/3.5/5.5 GHz m-WiMAX System Wireless Measurement using WiBro Network

WiBro 망을 이용한 2.5/3.5/5.5 GHz m-WiMAX 시스템 무선 측정용 주파수 변환기 개발

  • Kim, Se-Hwan (School of Electrical Engineering & Computer Science, Seoul National University) ;
  • Chun, Kuk-Jin (School of Electrical Engineering & Computer Science, Seoul National University)
  • 김세환 (서울대학교 전기.컴퓨터공학부) ;
  • 전국진 (서울대학교 전기.컴퓨터공학부)
  • Received : 2010.12.27
  • Published : 2011.02.25
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Abstract

For measuring quad-band module system using WiBro network, frequency converter was developed. The size of the fabricated frequency converter is $3.1cm{\times}3.1cm{\times}0.4cm$. Noise figure of the receiver part of the frequency converter was 2.62 ~ 3.45 dB, EVM of that is -37.5 dB ~ -34.5 dB. And EVM of the transmission part was -42.5 ~ -35.5 dB. Quad-band module was fabricated with the developed frequency converter. Testing the quad-band module in 2.3 GHz WiBro network results the excellent internet connection for 2.5 GHz, 3.5 GHz and 5.5 GHz band.

WiBro 망을 이용한 쿼드 밴드 모듈 시스템을 측정하기 위해서 주파수 변환기를 개발했다. 제작된 주파수 변환기의 크기는 $3.1cm{\times}3.1cm{\times}0.4cm$이다. 주파수 변환기 수신부의 잡음 지수는 2.62~3.45 dB였으며, EVM은 -37.5~-34.5 dB로 측정되었다. 그리고 송신부의 EVM은 -42.5~-35.5 dB로 측정되었다. 개발된 주파수 변환기와 함께 쿼드 밴드 모듈을 제작하였고, 2.3 GHz 와이브로 망에서 쿼드 밴드 모듈을 테스트한 결과, 2.5 GHz, 3.5 GHz, 5.5 GHz 대역에서 원활한 인터넷 연결이 가능했다.

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References

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