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:
Dec. 17, 1998
Partron Co., Ltd., Kyungki-do, KR;
Abstract
A dielectric filter stopping a frequency signal at a lower frequency band than a pass band as a reference band with a higher attenuation ratio to perform adjustment of the attenuation ratio even the lower frequency area. The dielectric filter comprises a predetermined conductive pattern on the front surface on a dielectric block in which a plurality of resonant holes are provided, the dielectric block including back and side surfaces covered with a conductive material, each resonant hole being covered with the conductive material in the internal surface, the predetermined conductive pattern being separated at a predetermined distance from the end portions of the resonant holes, whereby the predetermined conductive pattern forms a coupling capacitance between the adjacent resonators and a cross coupling capacitance between the resonators not adjacent to control an electromagnetic coupling over the whole dielectric filter.