Power amplifiers boost radio links
Article Abstract:
United Monolithic Semiconductors of Orsay, France, has introduced two models of a high-power integrated integrated-circuit amplifer. The amplifiers, CHA5092 and CHA5093, operates over frequencies of 22-26 GHz and 24-26 GHz, respectively. The products, which are based on a GaAs pseudomorphic-high-electroc-mobility-transistor gate-length technology, can find a wide range of applications from commercial digital radios to military communications systems.
Publication Name: Microwaves & RF
Subject: Engineering and manufacturing industries
ISSN: 0745-2993
Year: 1998
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Analysis examines the effects of coupler mismatch
Article Abstract:
The effect of mismatch on 3-dB Wilkinson and 90-degree couplers has been investigated. The use of the 3-dB, 90-degree couplers for the parallel operation of a pair similar amplifiers was also determined at source- and load-mismatched conditions. The behavior of the multipoint network was characterized in terms of the reflection coefficient of the source and load impedances connected to each port.
Publication Name: Microwaves & RF
Subject: Engineering and manufacturing industries
ISSN: 0745-2993
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
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