2 GHz Down Conversion MMIC Mixer using SiGe HBT Foundry

SiGe HBT 공정을 이용한 2 GHz Down Conversion MMIC Mixer 개발

  • S.-M. Heo (Department R&D Center, Tachyonics Corp.) ;
  • J.-H. Joo (Department R&D Center, Tachyonics Corp.) ;
  • S.-Y. Ryu (Department R&D Center, Tachyonics Corp.) ;
  • J.-S. Choi (Department R&D Center, Tachyonics Corp.) ;
  • Y.-H. Nho (Department R&D Center, Tachyonics Corp.) ;
  • B.-S. Kim (School of Information & Communication s Engineering, Sungkyunkwan University)
  • Published : 2002.09.01

Abstract

In this paper, a double balanced gilbert cell MMIC mixer was realized in Tachyonics SiGe HBT technology. The fabricated mixer has 17 dB conversion gain, 9.8 dB noise figure, -4.2 dBm output 1 dB compression point, -27 dBc RF to IF isolation, and the good input, output matching characteristics. It draws 10 mA from a 3 V supply. The simulation and the measured results are closer to each other, which confirms accuracy of the model library and reliability of the process.

본 논문에서는 (주)타키오닉스의 SiGe HBT 공정을 이용하여 double balanced Gilbert cell down conversion MMIC mixer를 구현한 결과를 제시하고, 이를 통해 RFIC 설계용 SiGe HBT 파운드리의 정확성과 신뢰성을 평가하였다. 제작된 Mixer는 3 V 동작 전압에서 10 mA의 전류를 소모하며, 2 GHz의 주파수 대역에서 17 dB의 Conversion Gain과 9.8 dB NF, -4.2 dBm Output 1 dB Compression Point, -27 dEc의 RF-IF Isolation의 특성을 나타내었으며 우수한 50 $\Omega$ 입. 출력 정합 특성을 갖는다. 시뮬레이션 결과와 측정결과는 거의 유사한 특성을 가지며, 이를 통해 SiGe HBT 모델 라이브러리의 정확성과 공정의 재현성을 검증할 수 있었다.

Keywords

References

  1. Rf Microelectronics Behzard Razavi
  2. Applied Microwave & Wireless, Winter 1995 Fundamentals of Active Mixer Barrie Gilbert;Rupert Baines
  3. Microwave Engineering(2nd ed.) David M. Pozar
  4. Microwave Transistor Amplifiers Analysis and Design(2nd Edition) Guillermo Gonzalez
  5. IEEE Transaction On Circuits And System-Ⅱ v.46 no.3 Analog And Signal Processing Keng Leong Fong;Robert G Meyer
  6. Bipolar And Mos Analog Integrated Circuit Design Alan B Greben