Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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94-GHz Single Balanced Mixer

94 GHz Single-Balanced 믹서의 설계 및 제작에 관한 연구

  • Hong, Seung-Hyun (Millimeter-Wave Innovation Research Center, Electronic Engineering Department, Dongguk University) ;
  • Lee, Mun-Kyo (Millimeter-Wave Innovation Research Center, Electronic Engineering Department, Dongguk University) ;
  • Lee, Sang-Jin (Millimeter-Wave Innovation Research Center, Electronic Engineering Department, Dongguk University) ;
  • Baek, Tae-Jong (Millimeter-Wave Innovation Research Center, Electronic Engineering Department, Dongguk University) ;
  • Han, Min (Millimeter-Wave Innovation Research Center, Electronic Engineering Department, Dongguk University) ;
  • Baek, Young-Hyun (Millimeter-Wave Innovation Research Center, Electronic Engineering Department, Dongguk University) ;
  • Choi, Seok-Gyu (Millimeter-Wave Innovation Research Center, Electronic Engineering Department, Dongguk University) ;
  • Rhee, Jin-Koo (Millimeter-Wave Innovation Research Center, Electronic Engineering Department, Dongguk University)
  • 홍승현 (동국대학교 전자공학과 밀리미터파 신기술 연구센터) ;
  • 이문교 (동국대학교 전자공학과 밀리미터파 신기술 연구센터) ;
  • 이상진 (동국대학교 전자공학과 밀리미터파 신기술 연구센터) ;
  • 백태종 (동국대학교 전자공학과 밀리미터파 신기술 연구센터) ;
  • 한민 (동국대학교 전자공학과 밀리미터파 신기술 연구센터) ;
  • 백용현 (동국대학교 전자공학과 밀리미터파 신기술 연구센터) ;
  • 최석규 (동국대학교 전자공학과 밀리미터파 신기술 연구센터) ;
  • 이진구 (동국대학교 전자공학과 밀리미터파 신기술 연구센터)
  • Published : 2008.06.18
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Abstract

The high performance 94 GHz MMIC(Monolithic Micro-wave Integrated Circuit) single balanced mixer was designed and fabricated, using MHEMT structure based diodes and a CPW(Coplanar Waveguide) tandem coupler. A novel single-balanced structure of diode mixer is proposed in this work, where a 3-dB tandem coupler with two section of parallel-coupled line. Implemented air-bridge crossover structures achieve wide frequency operation and the fabricated mixer exhibits excellent LO-RF isolation, larger than 30 dB, in the 5 GHz bandwidth of 91-96 GHz. A good conversion loss of 7.4 dB is measured at 94 GHz. The proposed MHEMT-based diode mixer shows superior LO-RF isolation and conversion loss to those of the W-band mixers reported to date.

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