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:
Aug. 01, 2000
Filed:
Feb. 06, 1998
Applicant:
Inventor:
Gary G Sanford, Apex, NC (US);
Assignee:
Ericsson Inc., Research Triangle Park, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q / ; H01P / ;
U.S. Cl.
CPC ...
343859 ; 343895 ; 343789 ; 333 26 ;
Abstract
A feed circuit connects an antenna to a communications circuit to achieve an increased operating bandwidth. The feed circuit includes a folded balun having a balanced port configured to connect the antenna and an unbalanced port configured to connect to the communications circuit. In addition, a resonating capacitance is connected across the balanced port of the folded balun. The resonating capacitance has a value that provides resonance with an inductance of the balun in such a way that the operating bandwidth of the combined feed circuit and antenna is increased.