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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

Abstract

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.

Keywords

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

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  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, https://doi.org/10.7471/ikeee.2016.20.3.251