Tunable evanescent-mode cavity filter
US9024709B2 · kind B2 · utility
14Cited by
3References
14Claims
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Key dates
| Filing date | Oct 3, 2009 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Mar 9, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P11/007
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A tunable filter having an electronically tunable center frequency and dynamic bandwidth control over a large tuning range. High-Q continuously tunable evanescent-mode cavity resonators and filters using reliable RF MEMS actuators. One embodiment is a 3.4-6.2 GHz (1.8:1 tuning ratio) continuously tunable electrostatic MEMS resonator with quality factor of 460-530, with a volume of 18×30×4 mm including the actuation scheme and biasing lines. A tunable resonators is also disclosed with a 2.8:1 (5.0-1.9 GHz) tuning ratio, and Q of 300-650.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.