Variable capacitance element
US6833985B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2003 |
| Grant date | Dec 21, 2004 |
| Priority date | — |
| Expiry date | Mar 5, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2059/0072
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A variable capacitance element includes a coplanar line or signal conduction and a movable body, which are vertically displaced through a supporting bar and which are provided on a substrate. A movable electrode is provided between a first driving electrode and second and third driving electrodes which are movable electrodes. Voltage is applied between the movable electrodes, such that one of the movable electrodes is pressed against the coplanar line through a dielectric film. Thus, high frequency signals conducting through the coplanar line are shut off. When voltage is applied between the other electrodes, the movable electrode and the dielectric film are moved apart from the coplanar line. Thus, high frequency signals are conducted through the coplanar line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.