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IEICE TRANSACTIONS on Electronics

A Monolithic GaAs Linear Power Amplifier Operating with a Single Low 2.7-V Supply for 1.9-GHz Digital Mobile Communication Applications

Masami NAGAOKA, Tomotoshi INOUE, Katsue KAWAKYU, Shuichi OBAYASHI, Hiroyuki KAYANO, Eiji TAKAGI, Yoshikazu TANABE, Misao YOSHIMURA, Kenji ISHIDA, Yoshiaki KITAURA, Naotaka UCHITOMI

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Summary :

A monolithic linear power amplifier IC operating with a single low 2.7-V supply has been developed for 1.9-GHz digital mobile communication systems, such as the Japanese personal handy phone system (PHS). Refractory WNx/W self-aligned gate GaAs power MESFETs have been successfully developed for L-band power amplification, and this power amplifier operates with high efficiency and low distortion at a low voltage of 2.7 V, without any additional negative voltage supply, by virtue of small drain knee voltage, high transconductance and sufficient breakdown voltage of the power MESFET. An output power of 23.0 dBm and a high power-added efficiency of 30.8% were attained for 1.9-GHz π/4-shifted QPSK (quadrature phase shift keying) modulated input when adjacent channel leakage power level was less than -60 dBc at 600 kHz apart from 1.9 GHz.

Publication
IEICE TRANSACTIONS on Electronics Vol.E78-C No.4 pp.424-429
Publication Date
1995/04/25
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Issue on Low-Voltage, Low-Power Integrated Circuits)
Category
Analog Circuits

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