A Highly Efficient Doherty Power Amplifier Based on Harmonic-Tuned Technique for 5G Application

被引：1
|
作者：
Dong, Weiqing [1 ]
Kong, Wa [1 ]
Xia, Jing [1 ]
机构：
[1] Jiangsu Univ, Sch Comp Sci & Commun Engn, Zhenjiang 212013, Jiangsu, Peoples R China
来源：
PROCEEDINGS OF THE 2021 CROSS STRAIT RADIO SCIENCE AND WIRELESS TECHNOLOGY CONFERENCE (CSRSWTC) | 2021年
基金：
美国国家科学基金会;
关键词：
Doherty power amplifier; Impedance buffer matching; Harmonic control; Back-off output power; High efficiency; BANDWIDTH; DESIGN;
D O I：
10.1109/CSRSWTC52801.2021.9631586
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：
To achieve high efficiency at back-off output powers, a harmonic tuned Doherty power amplifier (DPA) using impedance buffer matching technique was presented for 5G applications. After obtaining the optimum fundamental and harmonic impedances using load-pull simulations, a harmonic control impedance matching network is proposed to design the output matching networks of the carrier and peaking amplifiers for high efficiency operation. To verify the proposed method, a 4.8-5.0 GHz highly efficient DPA was designed and measured. Measurement results show that the designed DPA has the saturated output power of higher than 41.5 dBm and the maximum efficiency is about 65%, while the efficiency at 6-dB back-off output power is higher than 50%. This method can enhance the back-off efficiency of the DPA effectively.
引用
收藏
页码：157 / 159
页数：3
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