题目/Title：A 24-30GHz 4-Element Phased Array Transceiver with Low Insertion Loss Compact T/R Switch and Bidirectional Phase Shifter in 65 nm CMOS Technology

作者/Author：
                        Xiangrong Huang,Haikun Jia,Shengnan Dong,Wei Deng,Zhihua Wang,Baoyong Chi

会议/Conference：A-SSCC 2021

地点/Location：Busan, Korea

年份/Issue Date：2021.7-10 Nov.

页码/pages：pp.1-3

摘要/Abstract：
The 5G technology greatly expands the field of mobile communication by its high data rate and low latency. The performance improvement of 5G necessities a variety of different technologies including phased array technique. A T/R switch is widely used in phased arrays to reduce the number of antennas. It is one of the most critical modules in the phased array since it influences the performance of the output power for TX and noise Figure (NF) for RX directly. Conventional T/R switches are based on λ/4 transmission line, which is area consuming in lower millimeter-wave frequency range [1]. Recently, lumped equivalent transmission lines based on inductors [2] and transformers [3] are employed to reduce the chip area. However, the lumped transmission lines are usually narrow-band. Furthermore, the inductors or transformers still occupy extra chip area. To address this issue, a compact T/R switch co-designed with PA’s output match network and LNA’s input match network is proposed. Leveraging the existing transformers in the two match-networks, only one extra transistor switch is needed in this compact T/R switch, which greatly reduces the chip area consumption and therefore the insertion loss.