Improvement of power amplifier efficiency by reactive Chireix combining, power back-off and differential phase adjustment

被引：24

作者：

Gerhard, W. ^{[1
]}

Knoechel, R. ^{[1
]}

机构：

[1] Univ Kiel, Microwave Lab, Kaiserstr 2, D-24143 Kiel, Germany

来源：

2006 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, VOLS 1-5 | 2006年

关键词：

basestation; Chireix; efficiency; LDMOS; LINC; outphasing; rf power amplifier; WCDMA;

D O I：

10.1109/MWSYM.2006.249783

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：

An interesting effect of output power back-off (OPBO) efficiency improvement is presented which is present if 2 power amplifiers (PA) utilizing a reactive output Chireix coupling are combined with input power back-off and differential phase adjustment for maximum efficiency peaking. The capability of significant efficiency improvement at power back-off is demonstrated and validated by means of simulations and measurements. The new design method delivers a power added efficiency (PAE) of 48% at 6dB OPBO and 35% at 10dB OPBO for a 25.7W Si-LDMOS PA at 2.14 GHz for a WCDMA basestation application.

引用

页码：1887 / +

页数：2

共 7 条

[1] High power outphasing modulation [J].

Chireix, H .

PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1935, 23 (11) :1370-1392

[2] LINEAR AMPLIFICATION WITH NONLINEAR COMPONENTS [J].

COX, DC .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1974, CO22 (12) :1942-1945

[3] Differentially coupled outphasing WCDMA transmitter with inverse class F power amplifiers [J].

Gerhard, W ;

Knoechel, R .

2006 IEEE RADIO AND WIRELESS SYMPOSIUM, PROCEEDINGS, 2006, :355-358

[4]

Gerhard W, 2005, EURO WIREL TECHNOL C, P97

[5]

GRUNDLINGH J, 2004, IEEE MTT S, P1535

[6] A 2.14-GHz Chireix outphasing transmitter [J].

Hakala, I ;

Choi, DK ;

Gharavi, L ;

Kajakine, N ;

Koskela, J ;

Kaunisto, R .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2005, 53 (06) :2129-2138

[7]

Kimball D, 2005, COMP SEMICOND INTEGR, P89

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