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. 16, 2002
Filed:
Aug. 20, 1999
Applicant:
Inventors:
David L. Thomas, San Jose, CA (US);
Bradley L. Gilbert, Burlingame, CA (US);
Lawrence W. Hickey, Redwood City, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q 1/24 ;
U.S. Cl.
CPC ...
H01Q 1/24 ;
Abstract
A slot antenna is used to transmit radio frequency (RF) signals from within the housing of an electronic parking meter. The antenna is formed on a circuit board from a layer of conductive material from which some material has been removed to form a slot. A signal feed element, such as a coaxial cable terminating at a coaxial connector, connects electrically to the layer of conductive material on one side of the slot. A conductive element extends from the signal feed element across the slot to connect to the layer of conductive material.