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:
Apr. 22, 2014
Filed:
May. 25, 2011
Hsien-wen Liu, Keelung, TW;
Chien-chih Lee, Keelung, TW;
Chin-hsuan Tsai, Keelung, TW;
Shang-yu Yang, Keelung, TW;
Hsien-Wen Liu, Keelung, TW;
Chien-Chih Lee, Keelung, TW;
Chin-Hsuan Tsai, Keelung, TW;
Shang-Yu Yang, Keelung, TW;
Universal Microwave Technology, Inc., Keelung, TW;
Abstract
A cavity filter includes a base member defining therein a resonant chamber, an antenna port disposed at the center of the resonant chamber, two signal input/output ports respectively disposed at two distal ends of the resonant chamber for signal input/output, a cover member covering the base member, two feedback channels disposed in the base member at two opposite lateral sides relative to the resonant chamber and respectively connected between the signal ports and the antenna port, and wave-absorbing components respectively mounted in the feedback channels for removing surge waves from feedback frequency components in the feedback channels.