Discrete voltage tunable resonator made of dielectric material

Details Discrete voltage tunable resonator made of dielectric material Discrete voltage tunable resonator made of dielectric material

2006-02-10

2008-11-11

Jones, Stephen E (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S235000

Reexamination Certificate

active

07449980

ABSTRACT:
A voltage tunable resonator is provided, including a dielectric base made of a dielectric material having at least one of a voltage dependent dielectric constant and piezoelectric characteristics. A metal contact having a predetermined area is provided on an outer surface of the dielectric base at a predetermined location to provide a predetermined loaded Q for the resonator, and a metal ground coating is provided on the remaining exposed surfaces of the dielectric base, and an isolation region having a sufficient area to prevent significant coupling between the metal contact and the metal ground coating. A control voltage applied between the metal contact and the metal ground coating provides at least one of (i) a variable electric field to control the dielectric constant and a resonant frequency of the resonator and (ii) a piezoelectric response causing a dimensional change in the resonator to control the resonant frequency of the resonator.

REFERENCES:
patent: 6683516 (2004-01-01), Chiu et al.

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