High isolation wideband CMOS T/R switch with leakage cancellation technique for software-defined radio transceiver

作者：Zhang, Xinwang; Wang, Zhihuan; Chi, Baoyong^*

来源：Analog Integrated Circuits and Signal Processing, 2016, 87(1): 93-99.

DOI：10.1007/s10470-016-0723-3

• High isolation
• Wideband
• T/R switch
• Leakage cancellation
• CMOS
• SDR

0.1-3 GHz high isolation wideband CMOS Transmit/Receiver (T/R) switch is presented for software-defined radio (SDR) transceiver. The independent bias technique is proposed to keep the transistors in ideal ON/OFF mode to improve power handling capacity. The leakage cancellation technique with two matched paths is introduced to cancel the leakage from TX port to RX port. The proposed T/R switch has been implemented in 65 nm CMOS. The measured results show that the differential T/R switch achieves 23dBm 1-dB compression point (P-1dB) and features 50-70 dB isolation.

• 出版日期2016-4
• 单位清华大学