MEMS based tunable antenna for wireless reception and transmission
US7167135B2 · kind B2 · utility
7Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2004 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Oct 7, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/0407
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna for a wireless device may be kept dynamically tuned to a desired center frequency to compensate for detuning which may be caused by environmental influences. A sensor provides a feedback signal to a controller to select an appropriate capacitance value from a variable capacitor to tune the antenna for the wireless device. The variable capacitor may comprise a plurality of fixed capacitors and MEMS switches arranged in parallel or may comprise a variable MEMS capacitor having a fixed lower plate and a flexible upper plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.