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. 12, 2003
Filed:
Nov. 07, 2001
John A. Olson, Brookfield, WI (US);
Mark Lazar, New Berlin, WI (US);
H. Paul Walding, Jr., Slinger, WI (US);
Badger Meter, Inc., Milwaukee, WI (US);
Abstract
An antenna assembly ( ) for RF communication of signals representing utility meter data. The antenna assembly ( ) comprises a first conductor ( ) forming at least a portion of an antenna radiating element, a second conductor ( ), and a dielectric ( ) disposed between the first conductor ( ) and the second conductor ( ), such that the first conductor ( ), the second conductor ( ) and the dielectric ( ) form a capacitor. The antenna assembly ( ) further comprises an inductance ( ) in cascade with the capacitor to provide a selected L-C circuit impedance in relation to the antenna radiating element. The second conductor ( ) is disposed opposite to the first conductor ( ) and at least one of the first and second conductors ( ) is movable from a first to a second position to adjust the capacitance of the L-C circuit to a selected frequency of operation.