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.

Date of Patent:
Jul. 27, 1999

Filed:

Jan. 08, 1997
Applicant:
Inventors:

Jun Toda, Ishikawa-ken, JP;

Kikuo Tsunoda, Ishikawa-ken, JP;

Haruo Matsumoto, Kanazawa, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P / ; H01P / ;
U.S. Cl.
CPC ...
333202 ; 333206 ;
Abstract

A dielectric filter with a shorting conductor for improving a spurious response characteristic in a mode other than a fundamental mode (TEM mode). Two resonator holes having inner conductors formed on their inner surfaces are formed through a dielectric block between a pair of end surfaces. An outer conductor is formed on outer surfaces of the dielectric block. A through hole is formed through a central portion of the dielectric block between two major surfaces of the block, and a shorting conductor is formed on the inner surface of the through hole to be connected to outer conductor portions on the two major surfaces of the dielectric block. The shorting conductor is disposed at a location where the electric field strength of the undesired mode is high.


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