Efficiency Analysis of a Switched-Capacitor Quadrature Power Amplifier Employing RF Pulse-Width-Modulation

被引：0

作者：

Kang, Heechai ^{[1
]}

Kim, Ki Yong ^{[1
]}

Gharpurey, Ranjit ^{[1
]}

机构：

[1] Univ Texas Austin, Austin, TX 78712 USA

来源：

PROCEEDINGS OF THE 2020 IEEE TEXAS SYMPOSIUM ON WIRELESS AND MICROWAVE CIRCUITS AND SYSTEMS (WMCS) | 2020年

基金：

美国国家科学基金会;

关键词：

RF-PWM; Switched Capacitor; Power Amplifier; IQ Combiner; Outphasing;

D O I：

10.1109/wmcs49442.2020.9172410

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Amplitude variation in a switched-capacitor Cartesian quadrature class-D PA can be achieved by scaling capacitor ratios or by employing pulse-width modulated signals to drive the class-D stages. The second approach allows for continuous amplitude control, thus avoiding the quantization noise that can result from discrete amplitude variation. The efficiency of the PWM class-D stage is analyzed in this paper. A brief comparison with discrete switched-capacitor-based amplitude control is presented.

引用

页数：4

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