Driver Topologies for RF Doherty Power Amplifiers

被引：5

作者：

Saad, Paul ^{[1
]}

Asghari, Zahra ^{[2
]}

Fager, Christian ^{[2
]}

Nemati, Hossein Mashad ^{[1
]}

机构：

[1] Ericsson AB, Radio Design Ctr, Gothenburg, Sweden

[2] Chalmers, Dept Microtechnol & Nanosci, Gothenburg, Sweden

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2017年 / 27卷 / 01期

关键词：

Doherty power amplifier; driver amplifier; GaN-HEMT; two-stage power amplifier; PREDISTORTION;

D O I：

10.1109/LMWC.2016.2629977

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 letter, class-B, embedded class-B, and Doherty driver topologies are investigated for RF Doherty Power Amplifiers (PAs). The investigation is firstly conducted theoretically and by simulations and then verified by design and implementation of the different topologies at 2.1 GHz using GaN-HEMT transistors. The results show that the highest lineup efficiency can be achieved when using a Doherty driver. Modulated measurements using the same LTE signal and the same digital per-distorter (DPD), show about 2% and 4% higher average lineup efficiency when the Doherty driver is used compared to the class-B and embedded class-B drivers, respectively.

引用

页码：67 / 69

页数：3

共 7 条

[1]

[Anonymous], IEEE CIRC S COMP SEM

[2]

Colantonio Paolo., 2009, High Efficiency RF and Mircowave Solid State Power Amplifiers

[3] A high gain Doherty amplifier using embedded drivers [J].

Ghim, Jae-Gon ;

Cho, Kyoung-Joon ;

Kim, Jong-Heon ;

Stapleton, Shawn P. .

2006 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, VOLS 1-5, 2006, :1838-+

[4] Digital predistortion of wideband signals based on power amplifier model with memory [J].

Kim, J ;

Konstantinou, K .

ELECTRONICS LETTERS, 2001, 37 (23) :1417-1418

[5]

Landin P.N., 2014, 2014 IEEE 11th International Multi-Conference on Systems, Signals and Devices (SSD14), P1

[6]

Lee YS, 2010, IEEE MTT S INT MICR, P1500, DOI 10.1109/MWSYM.2010.5518217

[7] Highly Linear and Efficient Asymmetrical Doherty Power Amplifiers with Adaptively Bias-controlled Predistortion Drivers [J].

Lee, Yong-Sub ;

Lee, Mun-Woo ;

Kam, Sang-Ho ;

Jeong, Yoon-Ha .

2009 IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM, VOLS 1-3, 2009, :1393-1396

← 1 →