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Small-Signal Impedance of a Radio Frequency Plasma Capacitor

Linardakis, Peter; Borg, Gerard


A capacitor for radio frequency control is proposed that uses a gas discharge plasma as a variable dielectric. Experimental small-signal impedance measurements on a prototype device at 500 MHz-2.4 GHz show a capacitance ratio of 2-6:1 with a quality factor of 60 at 600 MHz. Results compare well with simple theoretical descriptions of the dielectric properties of plasmas.

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: IEEE Microwave and Wireless Components Letters
DOI: 10.1109/LMWC.2007.908042


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