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JSSC 2023第8期RF & Wireless22nm FD-SOIPower AmplifierNeural Network Accelerator

A Predistortion-Less Digital MIMO Transmitter With DTC-Based Quadrature Imbalanc

22nm FD-SOI工艺的无预失真数字MIMO发射机，采用DTC校准实现高线性与低功耗。
80MHz 1024QAM EVM<-39.4dB, 1.18Gbps, 1.64-3.28GHz
MIMO发射机无预失真数字时间转换器正交失衡校准键合线电感
▸采用恒定电导SCPA驱动器和宽带低阻抗电源实现线性化，无需数字预失真(DPD)
▸基于数字时间转换器(DTC)的时钟校准技术，将镜像抑制提升至>53dB
▸利用键合线作为电感的二阶切比雪夫带通滤波器，节省芯片面积
Abstract
A four-element multi-input multi-output (MIMO) switched capacitor power amplifier (SCPA) in 22-nm fully depleted silicon-on-insulator (FD-SOI) is presented as a software- defined radio. To omit the digital predistortion (DPD) and digital quadrature correction power consumption of this wide modulation bandwidth MIMO transmitter, constant-conductance SCPA drivers and a wideband low-impedance power supply are used for linearization. Digital-to-time converter (DTC)-based clock calibration is used fo