Systems and methods for tuning resonators
US9722566B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2014 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Mar 24, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/097
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high-Q factor resonator includes a solenoid having an embedded capacitor assembled in a machinable high-frequency dielectric printed circuit board (“PCB”), or other substrate. The solenoid comprises a plurality of surface conductors positioned on upper and lower surfaces of the PCB. The solenoid further comprises a plurality of conductive vias extending through the PCB between the surface conductors, and at least two aligned vias are separated by a capacitive gap. A liquid crystal dielectric is embedded within the capacitive gap in order to control the capacitance. Accordingly, a tunable capacitive filter is achieved by changing the dielectric permittivity of the liquid crystal. In one example, a nematic liquid crystal is sealed in the capacitive gap and has its permittivity changed with a low frequency bias to tune the capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.