This paper gives a new method to solve some problems in current radar scout system, that is the front-end RF channel.
针对目前雷达侦察中面临的一些问题，本文提出了一种解决方法，即射频前端通道。
In addition, he was also engaged in the RF front-end development of cable and satellite for digital TV and led the project return channel for cable.
另外，他还参与数字电缆和卫星电视接收机的射频部分研发并领导电缆电视上行信道工程。
But radio frequency (rf) front-end imperfections can lead to the loss of channel reciprocity, which will invalidate the advantage of TDD systems.
但是射频器件的非理想特性将导致信道互易性的丧失，使TDD系统的优势无法发挥。
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