MMIC Power Amplifier with on Chip Adaptive Predistortion Function for W-CDMA Mobile Terminals(Microwaves, Millimeter-Waves)
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概要
- 論文の詳細を見る
This paper proposes a new on-chip linearizer self-adapting to the input power and its implementation to high linear monolithic microwave integrated circuit (MMIC) power amplifier for 1.95 GHz wideband code division multiple-access (W-CDMA) system. The linearizer consists of InGaP/GaAs heterojunction bipolar transistor (HBT) active bias circuit and reverse biased junction diode of which dynamic admittance to input power level functions adaptively to control the bias to the amplifier.The proposed linearizer has little insertion power loss, and more importantly, it consumes no additional die area and DC power. The HBT MMIC power amplifier with the integrated linearizer exhibits a maximum output power of 30.3 dBm, a power gain of 27.5 dB, a power added efficiency of 42% at the maximum output power under an operation voltage of 3.4V, and adjacent channel leakage power ratio of -38dBc at 27dBm of output power.
- 社団法人電子情報通信学会の論文
- 2004-07-01
著者
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Kim J
Kaist Taejon Kor
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KIM Joon
School of Life Sciences & Biotechnology, Korea University
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Park C
School Of Engineering Information And Communications University(icu)
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Park C
School Of Engineering Information And Communications University (icu)
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PARK Chul
School of Engineering, Information and Communications University (ICU)
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Kim Joon
School Of Engineering Information And Communications University (icu):electronics And Telecommunicat
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Kim Ji
School Of Engineering Information And Communications University (icu)
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Kim Ji
School Of Engineering In Information And Communications University
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NOH Youn
School of Engineering, Information and Communications University (ICU)
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Park Chul
School Of Engineering Information And Communications University
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Noh Youn
Communications Satellite Development Group Etri
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Noh Youn
School Of Engineering Information And Communications University (icu):electronics And Telecommunicat
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Kim Ji
School Of Electronic Engineering Soongsil University
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Kim Ji
School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi 440-746, Korea
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