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. 17, 2023
Filed:
Feb. 19, 2021
Fujikura Ltd., Tokyo, JP;
Yuta Hasegawa, Sakura, JP;
FUJIKURA LTD., Tokyo, JP;
Abstract
This invention reduces, in a type of bandpass filter that is called a strip-line filter or a microstrip filter, a variation in filter characteristics that can occur in a case where the design of the first line and the second line is changed. The bandpass filter (filter) includes a ground conductor layer, n resonators (to), and first and second lines (lines), wherein the first and second lines (lines) are respectively connected to a third side (side R) of a first resonator (resonator) and a seventh side (side R) of an n-th resonator, a gap (G) is provided in an area of a fourth side (side R) which area is close to a second resonator (resonator), and a gap (G) is provided in an area of an eighth side (side R) which area is close to an n−1-th resonator (resonator).