A Wideband Efficiency-Enhanced Class-G Digital Power Amplifier for IoT Applications

被引：14

作者：

Li, Tong ^{[1
]}

Yin, Yun ^{[1
]}

Zhu, Yiting ^{[1
]}

Xiong, Liang ^{[1
]}

Liu, Yangzi ^{[1
]}

Yan, Na ^{[1
]}

Min, Hao ^{[1
]}

Xu, Hongtao ^{[1
]}

机构：

[1] Fudan Univ, State Key Lab ASIC & Syst, Shanghai 201203, Peoples R China

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2018年 / 28卷 / 08期

基金：

中国国家自然科学基金;

关键词：

80211ah; class-G; digital power amplifier (DPA); efficiency enhanced; narrowhand Internet of Things (NB-IoT); widehand; POLAR TRANSMITTER;

D O I：

10.1109/LMWC.2018.2847456

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：

This letter presents a wideband digital power amplifier (DPA) with Class-C technique to enhance hack-off efficiency for Internet-of-Things (IoT) applications. The switched-capacitor power amplifier topology is adopted for high linearity performance. A wideband matching network is proposed to achieve 0.54-0.95-GHz frequency coverage for 802.11ah and narrowband IoT standards. The measurement results demonstrate a flat frequency response with only 0.5-dB power deviation over 0.54-0.95 GHz. The DPA achieves the peak output power of 23.5 dBm with 42.7% peak PAE and 32.8% PAE at 6-dB back off. When amplifying an 8-MHz 64 quadratic-amplitude modulation 802.11ah signal at 800 MHz, it obtains -28.4-dB error vector magnitude and 30.1% average PAE at 16.5-dBm average output power.

引用

页码：714 / 716

页数：3

共 8 条

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