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:
Sep. 05, 2006
Filed:
Jun. 02, 2003
Young Wan Kim, Daejon, KR;
Byung Su Kang, Daejon, KR;
Nae-soo Kim, Daejon, KR;
Deock Gil OH, Daejon, KR;
Chul Hen Seo, Seoul, KR;
Serk Soon Im, Incheon, KR;
Jae Hoon Kim, Seoul, KR;
Young Wan Kim, Daejon, KR;
Byung Su Kang, Daejon, KR;
Nae-soo Kim, Daejon, KR;
Deock Gil Oh, Daejon, KR;
Chul Hen Seo, Seoul, KR;
Serk Soon Im, Incheon, KR;
Jae Hoon Kim, Seoul, KR;
Abstract
An open loop resonator filter employed aperture on the ground plane is disclosed. The open loop resonator filter using apertures on the ground plane formed on the dielectric substrate, the open loop resonator filter including: one or more open loop resonators formed on a upper side of the dielectric substrate and implemented by microstrip lines; and one or more apertures formed on a predetermined area of the ground plane. The present invention can control the coupling coefficient of the open loop resonator without degrading the group delay characteristics by forming the aperture on the ground plane. Therefore, by forming the aperture on the ground plane, it is possible to design a filter having a wide bandwidth characteristic.