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. 30, 2018
Filed:
Jul. 06, 2015
Sercomm Corporation, Taipei, TW;
Meng-Chien Chiang, Taipei, TW;
Chien-Ming Chen, Taipei, TW;
SERCOMM CORPORATION, Taipei, TW;
Abstract
Disclosed herein is a microstrip line filter including a dielectric substrate, a first hairpin resonator, and a metal ground layer. The first hairpin resonator is disposed on a first layer of the dielectric substrate. The metal ground layer is disposed on a second layer of the dielectric substrate. The metal ground layer includes a first defected ground structure. The first defected ground structure includes a first defected area, a second defected area, and a third defected area. The projection of the first defected area on the first layer is located inside the hairpin structure of the first hairpin resonator. The projection of the second defected area on the first layer is located in a direction opposite to an opening direction of the first hairpin resonator. The third defected area connects the first defected area and the second defected area.