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. 05, 2004
Filed:
Aug. 17, 2001
Applicant:
Inventors:
Yongfei Zhu, Columbia, MD (US);
Yu Rong, Germantown, MD (US);
Kenneth Hersey, Clarksville, MD (US);
Khosro Shamsaifar, Ellicott City, MD (US);
Ernest Ekelman, Damascus, MD (US);
Louise Sengupta, Ellicott City, MD (US);
Assignee:
Paratek Microwave, Inc., Columbia, MD (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01P 1/20 ; H01P 1/205 ;
U.S. Cl.
CPC ...
H01P 1/20 ; H01P 1/205 ;
Abstract
A voltage-controlled tunable filter includes at least two cavity resonators electrically coupled to each other. A voltage tunable dielectric capacitor is positioned within each of the resonators. Connections are provided for applying a control voltage to the voltage tunable dielectric capacitors. An input is coupled to the one of the resonators, and an output is coupled to the other resonator.