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
收藏
页码：1887 / +
页数：2
相关论文
共 50 条
  • [1] Kilowatt Power Amplifier With Improved Power Back-Off Efficiency for Cyclotron Application
    Tong, Renbin
    Bengtsson, Olof
    Olsson, Jorgen
    Backlund, Andreas
    Dancila, Dragos
    IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2022, 70 (02) : 1401 - 1409
  • [2] A Power Amplifier with Minimal Efficiency Degradation under Back-Off
    Singhal, Nitesh
    Nidhi, Nitin
    Pamarti, Sudhakar
    2010 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, 2010, : 1851 - 1854
  • [3] A Harmonic Controlled Doherty Power Amplifier with Enhanced Efficiency at Back-off Power
    Zhu, Shuailei
    Chen, Xiaoen
    Kong, Wa
    Ding, Dawei
    Xia, Jing
    2017 IEEE SIXTH ASIA-PACIFIC CONFERENCE ON ANTENNAS AND PROPAGATION (APCAP), 2017,
  • [4] A Subharmonic Switching Digital Power Amplifier for Power Back-Off Efficiency Enhancement
    Zhang, Aoyang
    Chen, Mike Shuo-Wei
    IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2019, 54 (04) : 1017 - 1028
  • [5] A 60-GHz Power Amplifier With Efficiency Enhancement at Power Back-off
    Li, Zhichao
    Kumar, Thangarasu Bharatha
    Yu, Xiaopeng
    Yeo, Kiat Seng
    2016 INTERNATIONAL SYMPOSIUM ON INTEGRATED CIRCUITS (ISIC), 2016,
  • [6] Fully integrated CMOS power amplifier with efficiency enhancement at power back-off
    Liu, Gang
    Haldi, Peter
    Liu, Tsu-Jae King
    Niknejad, Ali M.
    IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2008, 43 (03) : 600 - 609
  • [7] Efficiency improvement of Chireix power amplifier with OFDM signals
    El-Asmar, M.
    Hamdane, W.
    Birafane, A.
    Kouki, A. B.
    WMSCI 2006: 10TH WORLD MULTI-CONFERENCE ON SYSTEMICS, CYBERNETICS AND INFORMATICS, VOL II, PROCEEDINGS, 2006, : 375 - 379
  • [8] PWM with Differential Class-E Amplifier for Efficiency Enhancement at Back-Off Power Levels
    Khan, H. R.
    Qureshi, A. R.
    Zafar, F.
    ul Wahab, Qamar
    2014 IEEE 57TH INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS), 2014, : 607 - 610
  • [9] Unbalanced Power Amplifier: An Architecture for Broadband Back-Off Efficiency Enhancement
    Nikandish, G. Reza
    Staszewski, Robert Bogdan
    Zhu, Anding
    IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2021, 56 (02) : 367 - 381
  • [10] Complementary metal-oxide-semiconductor 60 GHz power amplifier by in-phase power combining and digitally assisted power back-off efficiency enhancement
    Li, Nan
    Hao, Yu
    Liang, Yuan
    Fei, Wei
    Li, Xiuping
    Liu, Xiong
    IET MICROWAVES ANTENNAS & PROPAGATION, 2016, 10 (01) : 79 - 87
12345