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:
Feb. 06, 2001
Filed:
May. 24, 1999
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A half-wavelength resonator type high frequency filter has N half-wavelength resonators (where N is an integer not smaller than 2); an input terminal; an output terminal; first matching part for matching the first of the resonators to the input terminal; second matching part for matching the N-th of the resonators to the output terminal; and (N−1) interstage coupling part for coupling the resonators with one another, and wherein excitation positions of the first of the resonators and the N-th of the resonators are displaced from the center positions of the respective resonators toward an end thereof, and at least one of the interstage coupling part is electrically connected to its associated resonators at positions other than both ends thereof.