A CMOS 4-Element Ku-Band Phased-Array Transceiver  

作　　者：ZHANG Xiaoning YU Yiming ZHAO Chenxi LIU Huihua WU Yunqiu KANG Kai 

机构地区：[1]School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China

出　　处：《Chinese Journal of Electronics》2022年第6期1092-1105,共14页电子学报（英文版）

基　　金：supported by the National Key R&D Program of China(2020YFB1805003);the National Natural Science Foundation of China(61931007,62171102,62025106)。

摘　　要：This paper presents a Ku-Band fully differential 4-element phased-array transceiver using a standard 180-nm CMOS process.Each transceiver is integrated with a 5-bit phase shifter and 4-bit attenuator for high-resolution radiation manipulation.The front-end system adopts time-division mode,and hence two low-loss T/R switches are included in each channel.At room temperature,the measured root-mean-square(RMS)phase error is less than 5.5°.Furthermore,the temperature influence on passive switched phase shifters is analyzed.Meanwhile,an extra phase-shifting cell is developed to calibrate phase error varying with the operating temperatures.With the calibration,the RMS phase error is reduced by 7°at-45℃,and 5.4°at 85℃.The RMS amplitude error is less than 0.92 dB at 15-18 GHz.In the RX mode,the tested gain is 9.6±1.1 dB at 16.5 GHz with a noise figure of 10.9 dB,and the input P1dB is-15 dBm,while the single-channel's gain and output P1dB in the TX mode are 11.3±0.4 dB and 9.4 dBm at 16.1 GHz,respectively.The whole chip occupies an area of 5×4.2 mm^(2) and the measured isolation between each two adjacent channels is lower than-23.1 dB.

关 键 词：ATTENUATOR CMOS KU-BAND PHASED-ARRAY Phase shifter TRANSCEIVER Temperature effect 

分 类 号：TN859[电子电信—信息与通信工程]