Utilizing Five-Port Down-Converter in Adaptive Linearization of Base Station Envelope Tracking Power Amplifiers

被引：0

作者：

Roodaki, Parisa Momen ^{[1
]}

Mohammadi, Abbas ^{[1
]}

Abdipour, Abdolali ^{[1
]}

机构：

[1] Amirkabir Univ, Dept Elect Engn, Microwave & Wireless Commun Lab, Tehran 15914, Iran

来源：

ASIA-PACIFIC MICROWAVE CONFERENCE 2011 | 2011年

关键词：

Five-port; digital predistortion (DPD); envelope tracking (ET); power amplifier; envelope amplifier;

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：

A high linear, high efficient base station power amplifier is presented. For increasing average efficiency in the highly modulated signal amplification, an envelope tracking technique is employed. Linearization is done using an adaptive digital pre-distortion (DPD). A passive five-port fabric is used in the feedback path instead of conventional demodulators which reduces size, power consumption and cost. By using such adaptive DPD in the envelope tracking power amplifier (ET-PA), the simulated average efficiency on an LDMOSFET for a WCDMA signal is obtained more than 70% over 20 dBm input power and ACLR is improved about 15 dB at 5 MHz offset.

引用

页码：1266 / 1269

页数：4

共 5 条

[1] An Adaptive Pre-Distortion Linearization Technique for Power Amplifier Using a Five-Port Receiver
Beikmirza, M. R.
Mohammadi, A.
Mirzavand, R.
2014 7TH INTERNATIONAL SYMPOSIUM ON TELECOMMUNICATIONS (IST), 2014, : 1040 - 1045
[2] Efficiency ehancement of W-CDMA base-station envelope tracking power amplifiers via load modulation
Jeong, Jinho
Asbeck, Peter
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 2007, 49 (08) : 1954 - 1957
[3] Digitally Assisted Dual-Switch High-Efficiency Envelope Amplifier for Envelope-Tracking Base-Station Power Amplifiers
Hsia, Chin
Zhu, Anding
Yan, Jonmei J.
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Kimball, Donald F.
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Asbeck, Peter M.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2011, 59 (11) : 2943 - 2952
[4] Wideband High Efficiency Digitally-Assisted Envelope Amplifier with Dual Switching Stages for Radio Base-Station Envelope Tracking Power Amplifiers
Hsia, Chin
Kimball, Donald F.
Lanfranco, Sandro
Asbeck, Peter M.
2010 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST (MTT), 2010, : 672 - 675
[5] Digital predistortion of envelope-tracking power amplifiers under average power back-off and long-term average power efficiency for base-station applications
Yan, Jonmei J.
Draxler, Paul
Presti, Calogero D.
Kimball, Donald F.
Asbeck, Peter M.
INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES, 2013, 5 (02) : 171 - 177

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