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JSSC 2012第12期RF & Wireless32nm

A 24-GHz 2040-MHz Channel WLAN Digital Outphasing Transmitter Utilizing a Delay-

一款用于2.4GHz WiFi的数字化外差发射机，采用延迟相位调制器和高效功率放大器。
32nm CMOS, 26-dBm PA, 18.6%系统效率, 54-Mb/s 64QAM
数字化外差发射机延迟相位调制2.4GHz WiFiOFDMCMOS
▸延迟相位调制器实现1.4ps分辨率
▸相位MUX架构避免输出毛刺
▸开环设计支持40MHz OFDM带宽
Abstract
A digital outphasing transmitter i sp r e s e n t e df o r 2.4-GHz WiFi. The transmitter consists of two delay-based phase modulators and a 26-dBm integrated switching class-D power amplifier. The delay-based phase modulator delays incoming LO edges with a resolution of 1.4 ps (8 bit) required to meet WiFi requirements. A phase MUX architecture is proposed to implement switching between phases once every LO period (2.4 GHz) without generating detrimental glitches at the output. Due to its open-lo