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:
Apr. 25, 2000
Filed:
Sep. 10, 1997
Applicant:
Inventors:
Howard E Holshouser, Efland, NC (US);
Seung Kil Kim, Chapel Hill, NC (US);
Assignee:
Ericsson Inc., Research Triangle Park, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q / ;
U.S. Cl.
CPC ...
343702 ; 343895 ;
Abstract
Retractable antennas with quarter wave-quarter wave resonances for telephones, and which are particularly suitable for radiotelephones, include a retractable antenna with a top load element, a spatially separated rod element, and a cylindrical support conductor positioned therebetween. The cylindrical support conductor is structurally configured to receive a portion of the rod therein to add structural rigidity to the antenna and to define a coaxial capacitor between the rod and the conductor when the antenna is in the extended position.