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:
Jun. 29, 2004
Filed:
Aug. 06, 2002
Ji Hwan Shin, Kyungki-do, KR;
Samsung Electro-Mechanics Co., Ltd., Kyungki-do, KR;
Abstract
Disclosed is a dual band coupler, in which a dielectric layer having a coupling signal line is positioned between dielectric layers having a first main signal line and a second main signal line. Coupling coefficients of first and second signal lines can be independently controlled by laminating different numbers of dielectric layers between the coupling signal line and main signal lines, respectively. A shielding pattern for excluding mutual electromagnetic interference between the first and second main signal lines is formed on the dielectric layer having the coupling signal line to improve an isolation, and a small sized-dual band coupler can be provided because the dielectric layer having a ground pattern can be omitted.