Low Conversion Loss 94 GHz MHEMT MIMIC Resistive Mixer

낮은 변환손실 특성의 94 GHz MHEMT MIMIC Resistive 믹서

  • An Dan (Millimeter-wave Innovation Technology Research center) ;
  • Lee Bok-Hyung (Millimeter-wave Innovation Technology Research center) ;
  • Lim Byeong-Ok (Millimeter-wave Innovation Technology Research center) ;
  • Lee Mun-Kyo (Millimeter-wave Innovation Technology Research center) ;
  • Oh Jung-Hun (Millimeter-wave Innovation Technology Research center) ;
  • Baek Yong-Hyun (Millimeter-wave Innovation Technology Research center) ;
  • Kim Sung-Chan (Millimeter-wave Innovation Technology Research center) ;
  • Park Jung-Dong (Agency of Defense Development) ;
  • Shin Dong-Hoon (Millimeter-wave Innovation Technology Research center) ;
  • Park Hyung-Moo (Millimeter-wave Innovation Technology Research center) ;
  • Park Hyun-Chang (Millimeter-wave Innovation Technology Research center) ;
  • Kim Sam-Dong (Millimeter-wave Innovation Technology Research center) ;
  • Rhee Jin-Koo (Millimeter-wave Innovation Technology Research center)
  • 안단 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 이복형 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 임병옥 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 이문교 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 오정훈 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 백용현 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 김성찬 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 박정동 (국방과학연구소) ;
  • 신동훈 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 박형무 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 박현창 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 김삼동 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 이진구 (동국대학교 밀리미터파 신기술 연구센터)
  • Published : 2005.05.01

Abstract

In this paper, low conversion loss 94 GHz MIMIC resistive mixer was designed and fabricated. The $0.1{\mu}m$ InGaAs/InAlAs/GaAs Metamorphic HEMT, which is applicable to MIMIC's, was fabricated. The DC characteristics of MHEMT are 665 mA/mm of drain current density, 691 mS/mm of maximum transconductance. The current gain cut-off frequency(fT) is 189 GHz and the maximum oscillation frequency(fmax) is 334 GHz. A 94 GHz resistive mixer was fabricated using $0.1{\mu}m$ MHEMT MIMIC process. From the measurement, the conversion loss of the 94 GHz resistive mixer was 8.2 dB at an LO power of 10 dBm. P1 dB(1 dB compression point) of input and output were 9 dBm and 0 dBm, respectively. LO-RF isolations of resistive mixer was obtained 15.6 dB at 94.03 GHz. We obtained in this study a lower conversion loss compared to some other resistive mixers in W-band frequencies.

본 논문에서는 낮은 변환손실 특성의 94 GHz MIMIC(Millimeter-wave Monolithic Integrated Circuit) resistive 믹서를 설계 및 제작하였다. MIMIC resistive 믹서는 $0.1{\mu}m$ InGaAs/InAlAs/GaAs Metamorphic HEMT (High Electron Mobility Transistor)를 이용하여 설계 및 제작되었다. 제작된 MHEMT는 드레인 전류 밀도 665 mA/mm, 최대 전달컨덕턴스(Gm)는 691 mS/mm를 얻었으며, RF 특성으로 fT는 189 GHz, fmax는 334 GHz의 양호한 성능을 나타내었다. 94 GHz MIMIC 믹서의 개발을 위해 MHEMT의 비선형 모델과 CPW 라이브러리를 구축하였으며, 이를 이용하여 MIMIC 믹서를 설계하였다. 설계된 믹서는 본 연구에서 개발된 MHEMT MIMIC 공정을 이용해 제작되었다. 94 GHz MIMIC resistive 믹서의 측정결과 변환손실 특성은 94 GHz에서 8.2 dB의 양호한 특성을 나타내었으며, 입력 P1 dB는 9 dBm, 출력 P1 dB는 0 dBm의 결과를 얻었다. Resistive 믹서의 LO-IF 격리도는 94.03 GHz에서 15.6 dB의 측정 결과를 얻었다. 본 논문에서 설계 및 제작된 94 GHz MIMIC resistive 믹서는 기존의 W-band 대역 resistive 믹서와 비교하여 낮은 변환손실 특성을 나타내었다.

Keywords

References

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