대한전자공학회논문지SD (Journal of the Institute of Electronics Engineers of Korea SD)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

능동 MMIC mixer에 관한 연구

A Study for active MMIC

  • 김영기 (安養大學校 情報通信工學科) ;
  • 백경식 (安養大學校 情報通信工學科) ;
  • 김혁 (安養大學校 情報通信工學科) ;
  • 윤신영 (安養大學校 情報通信工學科)
  • 발행 : 2001.12.01
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초록

본 논문에서는 1.9 GHz대의 down converting 믹서를 능동 cascode 구조의 MMIC로 상용 설계 툴을 이용하고 일반적인 증폭기의 설계 방법을 응용한 시뮬레이션을 통하여 설계, 제작, 측정 및 분석하였다. 본 연구에서는 특히 능동 믹서의 설계과정 및 측정 결과를 자세히 기술하였다. 본 연구에서 사용된 능동소자는 Gate Length 0.5 ${\mu}$m, Gate Width 300 ${\mu}$m 인 GaAs MESFET이다. 개발된 회로는 3V 의 전원의 7.5 mA 의 전류를 소모하는 저전력소모의 MMIC 능동믹서로 변환 이득이 6.63 dB 이고 최저 잡음지수는 5.06 dB이며 Output $3^{rd}$ Order Intercept Point는 6.4 dBm 이다. 제작된 칩의 크기는 가로 1.86 mm 세로 1.28 mm 이다.

An active MMIC L-band down converting mixer was designed by using GaAs FET with 0.5 ${\mu}$m gate length and 300 ${\mu}$m gate width. Main circuit topology was cascoded two active FETs. It consumed only 7.5 mA with 3V DC voltage supply. Conversion gain of 6.63 dB, minumium noise figure of 5.06 dB and Input $3^{rd}$ Order Intercept Point of 6.4 dBm were obtained. The chip size is 1.86 mm ${\times}$ 1.28 mm.

키워드

참고문헌

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