Small and Large Signal Behavior of 3-way Shared Amplifiers

Conference: GeMIC 2008 - German Microwave Conference
03/10/2008 - 03/12/2008 at Hamburg-Harburg, Germany

Proceedings: GeMIC 2008

Pages: 4Language: englishTyp: PDF

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Baras, Torben (Institut für Hochfrequenztechnik - Tech. Univ. Hamburg-Harburg, 21073 Hamburg, Germany)
Metz, Carsten (European Patent Office, 80298 München, Germany)

A system analysis of a 3-way shared amplifier is presented in this paper. The Butler matrices are based on a planar multilayer microstrip implementation of a 3-Way phase combiner. The linear analysis focusses on the measured performance of the coupler arrangement incorporating commercially available medium power driver amplifiers. In the nonlinear analysis, oddorder intermodulation products, AM-AM, AM-PM as well as crossmodulation is studied. The analysis concludes with a load pull and efficiency comparison.