Variable matching circuit, variable resonance circuit,...

Details Variable matching circuit, variable resonance circuit,... Variable matching circuit, variable resonance circuit,...

2006-11-28

2006-11-28

Jones, Stephen E. (Department: 2817)

Wave transmission lines and networks

Coupling networks

With impedance matching

C333S172000

Reexamination Certificate

active

07142072

ABSTRACT:
In a variable matching circuit including an impedance device and a variable-capacitance capacitor, the variable-capacitance capacitor is formed in a manner that a plurality of variable-capacitance devices using thin film dielectric layers whose dielectric constants change depending on applied voltages are connected to each other in parallel regarding a direct current and connected to each other in series regarding a high frequency, between an input terminal and an output terminal. The variable matching circuit can be realized that can make the maximum use of the rate of a capacitance change of the variable-capacitance capacitor by a bias signal and make an impedance matching, that exhibits small waveform distortion and intermodulation distortion, and that is excellent in electric high power handling capability and low-loss even at a high frequency.

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