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:
Sep. 25, 2007
Filed:
Mar. 01, 2004
Dielectric resonator device, dielectric filter, duplexer, and high-frequency communication apparatus
Keiichi Hirose, Sagamihara, JP;
Shigeyuki Mikami, Yokohama, JP;
Yutaka Sasaki, Nagaokakyo, JP;
Toshiro Hiratsuka, Machida, JP;
Keiichi Hirose, Sagamihara, JP;
Shigeyuki Mikami, Yokohama, JP;
Yutaka Sasaki, Nagaokakyo, JP;
Toshiro Hiratsuka, Machida, JP;
Abstract
Electrodes () and () are formed on the front face (A) and the rear face (B) of a dielectric substrate (). Fan-shaped apertures (A) and (B) forming a resonator () are formed in the electrodes () and () such that the fan-shaped aperture (A) opposes the fan-shaped aperture (B). Accordingly, two parameters, that is, the radius and the central angle, of the fan-shaped apertures (A) and (B) can be used to set the resonant frequency of the resonator (), thus improving the flexibility in design of the resonator ().