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:
Nov. 20, 2012
Filed:
Oct. 28, 2009
Man-seok Uhm, Daejon, KR;
Youn-sub Noh, Daejon, KR;
Changsoo Kwak, Daejon, KR;
So-hyeun Yun, Daejon, KR;
Kiburm Ahn, Daejon, KR;
In-bok Yom, Daejon, KR;
Man-Seok Uhm, Daejon, KR;
Youn-Sub Noh, Daejon, KR;
Changsoo Kwak, Daejon, KR;
So-Hyeun Yun, Daejon, KR;
Kiburm Ahn, Daejon, KR;
In-Bok Yom, Daejon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
A coupled line filter includes: a first line resonator connected input port and a second line resonator connected with output port each having an electrical length of 270° at a predetermined center frequency, the first and second line resonators being disposed parallel to each other; and a third line resonator including one or more line resonators disposed between the first line resonator and the second line resonator, each line resonator having an electrical length of 90° at the center frequency and a first side aligned with first sides of the first line resonator and the second line resonator, wherein an order of the coupled line filter is determined by summing the number of the line resonators included in the third line resonator and the first and second line resonators.