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JSSC 2021第4期RF & WirelessCMOS

A CMOS Dual-Polarized Phased-Array Beamformer Utilizing Cross-Polariza tion Leak

一种利用交叉极化泄漏的CMOS双极化相控阵波束成形器，支持5G DP-MIMO操作。
28-GHz, 22% TX-mode效率, 4.9-dB RX-mode噪声系数, 0.48 mm²芯片面积, 52.2-dBm EIRP
双极化相控阵5GCMOS交叉极化泄漏
▸功率高效的模拟辅助交叉极化泄漏消除技术
▸紧凑的中和双向架构，降低制造成本
▸在严重极化耦合和旋转条件下改善DP-MIMO EVM
Abstract
This article introduces a power-efficient and low- cost CMOS 28-GHz phased-array beamformer supporting fifth- generation (5G) dual-polarized multiple-in-multiple-out (MIMO) (DP-MIMO) operation. To improve the cross-polarization (cross- pol.) isolation degraded by the antennas and propagation, a power-efficient analog-assisted cross-pol. leakage cancella- tion technique is implemented. After the high-accuracy can- cellation, more than 41.3-dB cross-pol. isolation is maintained along with the transmi