JSSC 2024第12期RF & Wireless14nmPLL

A Tri-Band Dual-Concurrent Wi-Fi 80211be Transceiver Achieving 46 dB TXRX EVM Fl

一款采用14nm FinFET工艺的高线性度Wi-Fi 7三频双并发收发器，实现了-46.1dB的TX EVM性能。

14nm FinFET, -46.1dB TX EVM@7.1GHz, -55.2dBc IPN(双核VCO), 支持4K-QAM 320MHz

Wi-Fi 7三频收发器采样锁相环可调电感4K-QAM

▸采用分数N采样锁相环与基于LMS算法的DTC非线性校准技术

▸引入磁通抵消型可调开关电感(CMSI)扩展调频范围

▸在V2I和混频器之间加入电阻衰减模块以优化接收机噪声性能

Abstract

A high-linearity, wideband transceiver for Wi-Fi 7 to support 4 K-QAM 320 MHz bandwidth (BW) is pre- sented and fabricated using a 14 nm Fin-FET CMOS process. To provide a high-performance local oscillator (LO) signal, a fractional-N sampling phase-locked loop with a high gain sampling phase detector (SPD) is implemented with digital-to- time converter (DTC) non-linearity calibration (NLC) based on a least mean square (LMS) algorithm. The transceiver exhibits excellent integrated phase noise (IP