The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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High Performance MMIC Star Mixer for Millimeter-wave Applications

밀리미터파 응용을 위한 우수한 성능의 MMIC Star 혼합기

  • 류근관 (국립한밭대학교 전자공학과) ;
  • 염인복 (한국전자통신연구원 위성무선융합연구부 무선RF탑재기술팀) ;
  • 김성찬 (국립한밭대학교 전자공학과)
  • Received : 2011.04.29
  • Accepted : 2011.10.13
  • Published : 2011.10.31
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Abstract

In this paper, we reported on a high performance MMIC star mixer for millimeter-wave applications. The star mixer was fabricated using drain-source-connected pseudomorphic high electron mobility transistor (PHEMT) diodes considering the PHEMT MMIC full process on 2 mil thick GaAs substrate. The average conversion loss of 13 dB was measured in the RF frequency range of 81 GHz to 86 GHz at LO frequency of 75 GHz with LO power of 10 dBm. The RF-LO isolation characteristics are greater than 30 dB and the input 1-dB compression are approximately 4 dBm. The total chip size is 0.8 mm ${\times}$ 0.8 mm.

본 논문에서는 밀리미터파 응용에서 사용 가능한 우수한 성능의 MMIC (Millimeter-wave Monolithic Integrated Circuit) star 혼합기를 구현하였다. MMIC star 혼합기를 구현하기 위하여 PHEMT (pseudomorphic high electron mobility transistor) 공정 기반의 소오스와 드레인 단자를 연결한 쇼트키 (Schottky) 다이오드를 사용하였다. 혼합기의 측정 결과 LO 주파수가 75 GHz이며 전력이 10 dBm 인 경우, 81 GHz에서 86 GHz의 RF 주파수 범위에서 평균 13 dB의 변환손실 특성을 얻었다. RF-LO 격리도 특성은 30 dB 이상의 결과를 얻었으며 약 4 dBm의 P1 dB 특성을 얻었다. 전체 칩의 크기는 0.8 mm ${\times}$ 0.8 mm이다.

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References

  1. S. A. Maas, Microwave Mixers, 2nd ed. Norwood, MA:Artech House, 1993.
  2. S. Basu, et al., "Design and Performance of a Planar Star Mixer," IEEE Transactions on Microwave Theory and Techniques, Vol.41, No. 11, pp.2028-2030, 1991.
  3. C. Chang, et al., "A 1.5 to 37 GHz Ultra- Broadband MMIC Mouw's Star Mixer," in Proc. European Microwave Conference, Vol.2, pp.2-4, 2005.
  4. Y. I. Ryu, et al., "A Monolithic Broadband Doubly Balanced EHFHBT Star Mixer with Novel Microstrip Baluns," in Proc. IEEE Microwave and Millimeter-wave Monolithic Circuits Symposium, pp.155-158, 1995.
  5. Che-Chung Kuo, et al., "Novel Miniature and Broadband Millimeter-wave Monolithic Star Mixer," IEEE Transactions on Microwave Theory and Techniques, Vol.56, No.4, pp. 793-802, 2008. https://doi.org/10.1109/TMTT.2008.919063
  6. K. Yeom, et al., "A Novel 60-GHz Monolithic Star Mixer using Gate-Drain-Connected PHEMT Diodes," IEEE Transactions on Microwave Theory and Techniques, Vol.53, No. 7, pp.2435-2440, 2005. https://doi.org/10.1109/TMTT.2005.850402