Presentation 2009-03-06
Broadband Balanced Cascode Power Amplifier with Output Impedance Control Circuit
Noriyuki MUKAI, Kazuhisa YAMAUCHI, Hiroyuki ARAI,
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Abstract(in English) This paper shows a GaAs FET broadband high efficiency power amplifier using the reactively matched amplifier technique with lossless elements. For wider bandwidth of the reactively matched amplifier, we propose a power amplifier circuit with high output impedances and small frequency dependence. The broadband amplifier is realized by he balanced cascode circuit technique applying output impedances of the amplifier control circuit for broadband matching. The output impedance control circuit is implemented with connected inductor to gate-source of common-gate FET in cascode configuration and capacitor to output in parallel, respectively. The amplifier has small frequency dependence with respect to real and imaginary part of output impedances for broadband matching. A broadband balanced cascode power amplifier achieves over 30% power-added-efficiency and over 32dBm output power in the target band. The amplifier is effective to terminals for Software defined radio that require the characteristics of broadband and high efficiency.
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Keyword(in English) Microwave / Power Amplifier / Broadband
Paper # MW2008-203
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Committee MW
Conference Date 2009/2/27(1days)
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Registration To Microwaves (MW)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Broadband Balanced Cascode Power Amplifier with Output Impedance Control Circuit
Sub Title (in English)
Keyword(1) Microwave
Keyword(2) Power Amplifier
Keyword(3) Broadband
1st Author's Name Noriyuki MUKAI
1st Author's Affiliation Graduate School of Engineering, Yokohama National University()
2nd Author's Name Kazuhisa YAMAUCHI
2nd Author's Affiliation Mitsubishi Electric Corporation
3rd Author's Name Hiroyuki ARAI
3rd Author's Affiliation Graduate School of Engineering, Yokohama National University
Date 2009-03-06
Paper # MW2008-203
Volume (vol) vol.108
Number (no) 452
Page pp.pp.-
#Pages 6
Date of Issue