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. 28, 2003
Filed:
Sep. 20, 2001
Applicant:
Inventors:
Olli Salmela, Helsinki, FI;
Pertti Ikäläinen, Huhmari, FI;
Assignee:
Nokia Corporation, Espoo, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01P 5/08 ;
U.S. Cl.
CPC ...
H01P 5/08 ;
Abstract
The invention is directed to a method for matching characteristic impedances in a wideband manner. The matching of characteristic impedances is realized by tapering a conductor inside a wall composed of a dielectric material. The tapered conductor is either an asymmetric stripline or an asymmetric coplanar line. The method enables characteristic impedance matching at up to 40 GHz. The coupler is applicable to signal line feedthroughs in MMIC packages.