Envelope Delta-Sigma Modulation with Adaptive Dither for Direct-Conversion Transmitter and Switch-Mode Power Amplifier

被引：0

作者：

Xiao, Lu ^{[1
]}

Abbasian, Sadegh ^{[1
]}

Kumar, Rohit ^{[2
]}

Yogi, Shanu ^{[2
]}

Johnson, Thomas ^{[1
]}

机构：

[1] Univ British Columbia, Sch Engn, Kelowna, BC V1V 1V7, Canada

[2] Indian Inst Technol, Dept Elect Engn, Kanpur 208016, Uttar Pradesh, India

来源：

2016 IEEE 17TH ANNUAL WIRELESS AND MICROWAVE TECHNOLOGY CONFERENCE (WAMICON) | 2016年

关键词：

switch-mode power amplifier; envelope delta-sigma modulation; adaptive dither;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A new encoder for radio frequency switch-mode power amplifiers is described. The encoder is designed for a transmitter architecture that uses envelope delta-sigma modulation (ESDM) and a direct conversion transmitter architecture. The ESDM is modified to include a dither signal that shapes the out-of-band spectrum while simultaneously maintaining good SNDR. The out-of-band dither can also be used to improve the power efficiency of the switch-mode power amplifier by rectifying the dither signal to recycle power. The encoder is designed to be implemented in a FPGA. Simulation and experimental results with an LTE modulated carrier are shown to demonstrate the concept.

引用

页数：4

共 46 条

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