JSSC 2021第10期RF & Wireless120nm

A 285-dB EVM 64-QAM 45-GHz Transceiver for IEEE 80211aj

一款采用120nm SiGe:C BiCMOS工艺的45GHz收发器，支持64-QAM调制，满足IEEE 802.11aj标准。

120nm SiGe:C BiCMOS, 42.3-48.4GHz, 64-QAM, EVM 285dB

毫米波收发器线性度IEEE 802.11ajSiGe:C BiCMOS

▸采用无源元件补偿方法快速均衡阻抗以提升线性度

▸应用T型二阶谐波终止方法进一步改善发射机线性度

▸基于自混频方法的功率检测器实现精确校准

Abstract

This article presents a fully integrated IEEE 802.11aj direct-conversion transceiver system in a 120-nm SiGe:C BiCMOS technology. The system includes a transmitter, a receiver, and two onboard substrates integrated waveguide-fed Yagi-Uda antennas. In the millimeter-wave frequency band, the common-mode (CM) signal in a transformer-based balun is a limiting factor for the linearity of differential devices. In this work, we analyze the cause of the CM effect and provide fast impedance equalization