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A High Power and Low Distortion Amplifier Module for Large Cell Base Station in Digital Cordless System
IEICE TRANSACTIONS on Electronics
Publication Date: 1998/06/25
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter-Wave Module Technology)
Category: Semiconductor Devices and Amplifiers
GaAs, power module, high power, low distortion, power divider/combiner,
Full Text: PDF(609.8KB)>>
A high power amplifier module has been developed for large cell base station in digital cordless system. For PHS application, this module exhibited Pout of 38 dBm with low ACP of -72 dBc (at 600 kHz offset point) and a power gain of 33 dB at a supply voltage of 9 V and a frequency range of 1890-1923 MHz. In order to realize this ultra low distortion performance, power FETs have been designed as considering high breakdown voltage and thermal stability. Power divider/combiner circuits, which have the advantages of low transmission loss and a function of controlling second harmonic, have been introduced. Moreover, a novel module package with features of low cost and good processing precision has been proposed.