A 3.5GHz High Power GaN Hybrid Doherty Power Amplifier with Dynamic Input Power Splitting for Enhanced Power Added Efficiency at Backoff

被引：12

作者：

Lopera, J. Romero ^{[1
]}

Mayock, J. ^{[2
]}

Sun, Q. ^{[2
]}

Gadringer, M. ^{[1
]}

Bosch, W. ^{[1
]}

Leitgeb, E. ^{[1
]}

机构：

[1] Graz Univ Technol, Inst Microwave & Photon Engn, Graz, Austria

[2] VIPER RF, Newton Aycliffe, England

来源：

2021 IEEE TOPICAL CONFERENCE ON RF/MICROWAVE POWER AMPLIFIERS FOR RADIO AND WIRELESS APPLICATIONS (PAWR) | 2021年

关键词：

Doherty; MMIC; GaN; Power divider; Hybrid; EXTENDED-RESONANCE;

D O I：

10.1109/PAWR51852.2021.9375547

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：

In this paper, a hybrid Doherty power amplifier (DPA) using dynamic input power splitting for 3.5 GHz is presented and compared to another Doherty with a conventional Wilkinson input divider sharing the same output structure. The amplifier is designed in a novel hybrid configuration, where a MMIC consisting of two parallel GaN transistors with input prematching are fully integrated on chip and used as the main and peak amplifiers. The remaining passive structures are implemented at PCB level on a RO4350B. The results at 3.5 GHz under continuous wave operation show 45 dBm of maximum output power with over 41% of PAE and Drain efficiency over 47% in a 6dB output power backoff (OBO) and 7 dB of gain for maximum output power.

引用

页码：44 / 47

页数：4

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