Discrete voltage tunable resonator made of dielectric material
US7449980B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 10, 2006 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Feb 20, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P7/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.