Wide Band High-Efficiency Power Amplifier Design

被引：0

作者：

AlMuhaisen, Abdullah ^{[1
]}

Lees, J. ^{[1
]}

Cripps, Steve C. ^{[1
]}

Tasker, P. J. ^{[1
]}

Benedikt, J. ^{[1
]}

机构：

[1] Cardiff Univ, Ctr High Frequency Engn, Cardiff, S Glam, Wales

来源：

2011 6TH EUROPEAN MICROWAVE INTEGRATED CIRCUIT CONFERENCE | 2011年

关键词：

component; broadband amplifier; high efficiency; injection amplifier; microwave amplifier; power amplifiers;

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：

This paper presents a hybrid (passive & active) power amplifier concept for a wideband high drain efficiency power amplifier design. The proposed design integrates for the first time a dual-band PA with an active second harmonic injection to achieve high efficiency across a continuous wideband frequency range of two octaves. The design utilizes a resistively loaded class B at the lower frequencies and a class J mode of operation at the upper frequency band. To maintain high efficiency during the transition between the two PA modes an active second harmonic injection at the output of the main transistor is employed through an addition of an auxiliary low power amplifier. To demonstrate the validity of the novel concept a demonstrator is realized around a 10 W GaN transistor with an average efficiency of 63% across 0.6-2.4 GHz at only modest gain compression of 1dB.

引用

页码：184 / 187

页数：4

共 6 条

[1]

AlMuhaisen A, 2010, IEEE MTT S INT MICR, P664, DOI 10.1109/MWSYM.2010.5514759

[2]

Colantonio P., 2007, 2007 European Microwave Integrated Circuits Conference, P127, DOI 10.1109/EMICC.2007.4412664

[3]

Cripps S.C., 2006, RF Power Amplifier for Wireless Communications, V2nd

[4]

Shealy J, 2002, TG IEEE GAL ARS, P243, DOI 10.1109/GAAS.2002.1049069

[5] The impact of system impedance on the characterization of high power devices [J].

Sheikh, Aamir ;

Tasker, Paul J. ;

Lees, Jonathan ;

Benedikt, Johannes .

2007 EUROPEAN MICROWAVE CONFERENCE, VOLS 1-4, 2007, :949-952

[6] A Methodology for Realizing High Efficiency Class-J in a Linear and Broadband PA [J].

Wright, Peter ;

Lees, Jonathan ;

Benedikt, Johannes ;

Tasker, Paul J. ;

Cripps, Steve C. .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2009, 57 (12) :3196-3204

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