The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 01, 2017
Filed:
Oct. 30, 2014
John D. Williams, Decatur, AL (US);
Robert Lindquist, Madison, AL (US);
John D. Williams, Decatur, AL (US);
Robert Lindquist, Madison, AL (US);
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.