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. 06, 2026
Filed:
Jan. 09, 2023
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Yuhua Xiao, Beijing, CN;
Juandi Song, Beijing, CN;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
An RF filter, comprising a chassis () that defines a cavity, and a plurality of resonators () that are disposed in the cavity, wherein at least one resonator () comprises a body part () that extends in a first plane from a first end to an opposite second end along a first direction, an enlarged portion () that is provided at the second end and extends in the first plane along a second direction substantially perpendicular to the first direction so as to have a larger width in the second direction than the body part (), and a folded portion () that is formed by bending along a lateral edge of the enlarged portion () at an angle of about 90° so as to extend in a second plane substantially perpendicular to the the second direction. The folded portion () plays a role in forming a coupling of the resonator with an adjacent resonator. The body part (), the enlarged portion () and the folded portion () are made of a metal strip line, or a strip-line made of non-metal base with a metallized surface. The folded positions of two adjacent resonators can achieve desired coupling polarity.