Band agile filter
US7327210B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2004 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | Dec 5, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P7/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A microwave filter and method for remotely tuning a microwave filter from one sub-band to another sub-band using metallic rings to adjust the capacitance or inductance of the resonator. In adjusting the capacitance, a plurality of metallic rings are disposed in the upper section or end of the resonator. Each ring has an RF switch that connects or disconnects each ring to ground, thereby varying the capacitance of the resonator. In adjusting the inductance, a plurality of metallic rings are disposed perpendicular to the magnetic field of the resonator. Each ring has an RF switch disposed within the electrical path of the ring that opens or closes the electrical path of each ring. By opening and closing each ring, the magnetic field of the resonator is altered, thereby varying the inductance of the resonator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.