Compact T/R Module Having Improved T/R Isolation Using a Bias Timing Scheme

바이어스 타이밍 기법을 이용하여 송수신 격리도가 개선된 소형 송수신 모듈

  • Received : 2012.07.16
  • Accepted : 2012.11.15
  • Published : 2012.12.31


The transmit/receive(T/R) module is a key component in the active phased array system. The brick-type T/R module has been widely used and the miniaturization has been an important factor to get the flexibility of the system configuration. For the miniaturization, multi-function chips(MFC) having a common leg configuration are suitable to reduce the number of required MMICs and a high isolation between transmit and receive paths is necessary for the high gain T/R modules. In this work, we propose a bias timing scheme for the compact T/R module and show the optimum timing based on measurements, in order to improve the feed-back path loop problem and the consequent isolation problem of the common leg configuration. We have implemented high power(7 W/channel) and high T/R gain(35 dB transmit and 30 dB receive gains) within the half size($140{\times}80{\times}16mm^3$) of the conventional T/R modules.


T/R Module;MFC;Common Leg;Active Phase Array;Bias Timing


  1. George W. Stimson, Introduction to Airborne Radar, SciTech Publishing Inc, 1998.
  2. Brue A. Kopp, Craig R. Moore, and Robert V. Coffman, "Transmit/receive module package: electrical design issues", Johns Hopkins APL Technical Digest, vol. 20, no. 1, 1999.
  3. Brue A. Kopp, Michael Borkowski, and George Jerinic, "Transmit/receive modules", IEEE Transaction on Microwave Theory and Techniques, vol. 50, no. 3, Mar. 2002.
  4. 김동윤, 정민길, 김상근, 전상미, 나형기, 백승훈, 안창수, 김선주, "능동 위상 배열 레이더용 X-대역 T/R 모듈 개발", 한국전자파학회논문지, 20 (12), pp. 1243-1251, 2009년 12월.
  5. Ashok Agrawal, Richard Clark, "T/R module architecture trade offs for phased array antennas", IEEE MTT-S Digest, 1996.
  6. M. Heijningen, A. Boer, J. A. Hoogland, M. Wanum, A. P. Hek, F. E. Vliet, and H. Brouzes, "Multi function and high power amplifier chipset for Xband phased array front ends", European Microwave Integrated Circuits Conference 2006, pp. 237-240, Sep. 2006.
  7. 전상미, 나형기, 김수범, 이정원, 김동휸, 김선주, 안창수, 이창희, "평면형 능동 위상 배열 레이더 용 안테나 시스템 개발", 한국전자파학회논문지, 20(12), pp. 1340-1350, 2009년 12월.
  8. 정민길, 김상근, 나형기, 이종환, 이동우, 백승훈, "능동 위상 배열 SAR 안테나를 위한 X-대역 송수신 모듈의 설계 및 제작", 한국전자파학회논문지, 20(10), pp. 1050-1060, 2009년 10월.
  9. 박성균, "X 대역 T/R 모듈의 설계 및 구현", 한국전자파학회논문지, 19(2), pp. 168-173, 2008년 2월.

Cited by

  1. A Study on Robustness Improvement of the Semiconductor Transmitter and Receiver Module By the Bias Sequencing and Tuning the Switching Time vol.20, pp.3, 2016,