Variable capacitor for RF power applications

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United States of America Patent

PATENT NO 11901160
SERIAL NO

17437446

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Abstract

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A radio-frequency (RF) power variable capacitor capable of operating at, at least, 50 watts in the MHz range. The capacitor has a composite HDK-NDK ceramic dielectric. The HDK (high dielectric constant) component comprises an active matrix of barium strontium titanate, for example. Acoustic resonances are reduced or eliminated by the addition of a metal or metalloid oxide such as magnesium borate (NDK—low dielectric constant), which acts as an acoustic resonance reduction agent (ARRA) in the RF power domain. The acoustic resonances which previously occurred under bias voltage 500 V or 1100 V in prior art RF power variable capacitors are eliminated by the addition of the ARRA.

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Patent Owner(s)

Patent OwnerAddress
COMET AGHERRENGASSE 10 3175 FLAMATT

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Binder, Joachim Karlsruhe, DE 10 49
Bohn, Nicole Karlsdorf-Neuthard, DE 1 1
Fink, Thomas Staufen, CH 34 235
Häuser, Kevin Karlsruhe, DE 1 1
Jakoby, Rolf Rosbach v. d. Höhe, DE 11 250
Kienemund, Daniel Klein-Gerau, DE 1 1
Maune, Holger Darmstadt, DE 3 34

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