← 返回 JSSC 论文列表
📄 下载 JSSC 原文 PDF
JSSC 2015第5期RF & Wireless45nmDelta-Sigma ADC

A PWM Based Fully Integrated Digital TransmitterPA for WLAN and LTE Applications

本文提出了一种基于PWM的全数字发射机，采用45nm CMOS工艺，实现高效能和高线性度。
23 dBm输出功率，47% PAE，20 MHz OFDM信号下23% PAE
数字发射机PWMsigma-delta调制Class-D PACMOS
▸采用sigma-delta调制和PWM技术
▸集成Class-D PA级
▸使用级联sigma-delta和开关电容结合降低噪声
Abstract
In this paper, we present a 23 dBm PWM based fully digital transmitter designed in standard 45 nm CMOS process. The digital transmitter u tilizes sigma-delta modulation and pulse-width modulation to convert high resolution baseband I and Q signals into 3-level switching signals, thereby allowing efficient Class-D PA stages to b e used. In addition, cascaded sigma-delta stages and switched-c apacitor combining are incorpo- rated into the architecture to significantly reduce the out-of-band quantiza