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:
Oct. 21, 2003
Filed:
Jan. 08, 2002
Thomas L. Obert, Claremont, CA (US);
Kenneth W. Brown, Yucaipa, CA (US);
Thomas A. Drake, Yucaipa, CA (US);
Raytheon Company, Lexington, MA (US);
Abstract
A high power slide tuning capacitor ( ) integrated into a circuit board adapted to function at RF and microwave frequencies. The capacitor ( ) includes a dielectric substrate ( ) with a cavity ( ) cut into a side of the substrate ( ); a ground plane ( ) mounted on a bottom surface of the dielectric substrate ( ); a microstrip patch ( ) mounted on a top surface of the dielectric substrate ( ) and positioned above the cavity ( ); and a movable dielectric stub ( ) which engages the cavity ( ) such that a variable length of the stub ( ) is positioned beneath the microstrip patch ( ). The microstrip patch ( ) can be coupled to a desired circuit trace ( ), effectively forming a shunt capacitor to ground.