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:
Jan. 13, 2004
Filed:
Aug. 29, 2002
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
The invention provides a dielectric filter device having first bore opening portions arranged between a first electrode formed on an upper surface or side surface of a dielectric block and a second electrode formed on the upper surface to provide a filter for passing a predetermined frequency band, and a second bore opening portion disposed between the second electrode and the side surface of the block. A conductive layer on the outer peripheral side surface close to the second electrode is removed in the form of a strip from at least one portion of the peripheral side surface which portion extends from the upper surface to the lower surface of the block. Unnecessary resonance in a high frequency range outside the pass band can be suppressed without providing an external circuit.