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:
May. 25, 1993
Filed:
Oct. 28, 1991
Shotaro Hayashi, Yamaguchi, JP;
Ube Industries, Ltd., Yamaguchi, JP;
Abstract
A plurality of coaxial type dielectric resonators 1A, 1B each having a dielectric 5 filled between an inner conductor 4 and an outer conductor 3 a dielectric block 2 for capacitor coupling between resonators and between the resonators and input/output terminals. The dielectric block has holes 6A, 6B opposed to the inner conductors 4 of the dielectric resonators, with electrodes 7A and 7B being formed on the inner surfaces of the holes. The electrodes 7A and 7B of the coupling dielectric block and the inner conductors 4 of the resonators associated therewith are connected through electroconductive spacers 9. Further, an input terminal electrode 8A and an output terminal electrode 8B are each formed on at least one of outer peripheral faces of the coupling dielectric block 2. The terminal electrodes 8A and 8B are both formed on one side, outer peripheral face of the dielectric block, or are formed on both end, outer peripheral faces respectively of the dielectric block. This construction permits a sufficient reduction in size of a dielectric filter while retaining desired characteristics.