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Wednesday, March 4, 2009

A Waveguide Mode-Converter Feed for a 5-W, 34-GHz Grid Amplifier

A Waveguide Mode-Converter Feed for a 5-W, 34-GHz Grid Amplifier

Abstract

We have demonstrated a compact waveguide mode converter that excites a combination of TE10 and TE30 modes for feeding grid amplifier. The effective transmitter power (ETP) at 34GHz is 5W with a gain of 5.5dB and a power-added efficiency (PAE) of 21%. The bias voltage is 3V with a bias current of 5.6A. These results are comparable to those reported earlier for the same grid-amplifier design measured in free space. The presentation will talk about the method to design such a mode converter.

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