Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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High LO-RF Isolation 94 GHz MMIC Single-balanced Mixer

높은 LO-RF 격리 특성의 94 GHz MMIC Single-balanced Mixer

  • An, Dan (Millimeter-wave INnovation Technology research center(MINT), Dongguk University) ;
  • Lee, Bok-Hyung (Millimeter-wave INnovation Technology research center(MINT), Dongguk University) ;
  • Lim, Byeong-Ok (Millimeter-wave INnovation Technology research center(MINT), Dongguk University) ;
  • Kim, Sung-Chan (Millimeter-wave INnovation Technology research center(MINT), Dongguk University) ;
  • Lee, Sang-Jin (Millimeter-wave INnovation Technology research center(MINT), Dongguk University) ;
  • Lee, Mun-Kyo (Millimeter-wave INnovation Technology research center(MINT), Dongguk University) ;
  • Shin, Dong-Hoon (Millimeter-wave INnovation Technology research center(MINT), Dongguk University) ;
  • Park, Hyung-Moo (Millimeter-wave INnovation Technology research center(MINT), Dongguk University) ;
  • Park, Hyun-Chang (Millimeter-wave INnovation Technology research center(MINT), Dongguk University) ;
  • Kim, Sam-Dong (Millimeter-wave INnovation Technology research center(MINT), Dongguk University) ;
  • Rhee, Jin-Koo (Millimeter-wave INnovation Technology research center(MINT), Dongguk University)
  • 안단 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 이복형 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 임병옥 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 김성찬 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 이상진 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 이문교 (동국대학교 밀리미터파 신기술 연구센터) ;
  • 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 : 2005.11.26
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Abstract

In this paper, high LO-RF isolation 94 GHz MMIC single-balanced mixer was designed and fabricated using a branch line coupler and a ${\lambda}/4$ transmission line. The 94 GHz MMIC single-balanced mixer was designed using the 0.1 ${\mu}m$ InGaAs/InAlAs/GaAs Metamorphic HEMT(MHEMT) diode. The fabricated MHEMT was obtained the cut-off frequency($f_T$) of 189 GHz and the maximum oscillation frequency($f_{max}$) of 334 GHz. The designed MMIC single-balanced mixer was fabricated using 0.1 ${\mu}m$ MHEMT MMIC process. From the measurement, the conversion loss of the single-balanced mixer was 23.1 dB at an LO power of 10 dBm. The LO-RF isolations of single-balanced mixer was obtained 45.5 dB at 94.19 GHz. We obtained in this study a higher LO-RF isolation compared to some other balanced mixers in millimeter-wave frequencies.

Keywords