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:
May. 25, 1999
Filed:
Dec. 30, 1996
Applicant:
Inventors:
Assignee:
Ericsson Inc., Research Triangle Park, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q / ; H01Q / ;
U.S. Cl.
CPC ...
343702 ; 343895 ; 343901 ;
Abstract
A multi-piece retractable radiotelephone antenna and associated communication method is employed to provide improved signal quality. The multi-piece antenna includes conductive windings, such as helical quadrafillar windings, disposed separately on two slidably cooperating substrate members. The antenna is mechanically extended to a deploy position and the separate windings are electrically connected thereby doubling the effective electrical length of the antenna.