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. 26, 1998
Filed:
Sep. 27, 1996
Masatoshi Saitoh, Machida, JP;
Harada Industry Co., Ltd., Tokyo, JP;
Abstract
A vehicle windowpane antenna comprises a first windowpane antenna element and a second windowpane antenna element which cooperate to perform diversity receiving of a VHF band signal and a UHF band signal. Each of the first and second windowpane antenna elements includes a VHF double-loop antenna pattern portion including two loops consisting of two conductive wires with connecting ends, the two loops being attached to a windowpane with their connecting ends connected with each other, a feeder portion provided at the connecting ends of the VHF double-loop antenna pattern portion, and connected to a feeder line, capacitive coupling portions each including a pair of conductors respectively extending from intermediate portions of the loops of the VHF double-loop antenna pattern portion such that the conductors are opposed to each other and can form a short circuit within the VHF double-loop antenna pattern portion in a high frequency state, and a device for setting the electrostatic capacitance of each of the capacitive coupling portions, such that the capacitive coupling portions are not conductive when a VHF band signal is received, and conductive in a high frequency state when a UHF band signal is received.