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:
Mar. 13, 2001
Filed:
Dec. 14, 1999
Hiroshi Endo, Tokyo, JP;
Richard Langley, Chartham Hatch, GB;
Harada Industry Co., Ltd., , JP;
Abstract
A vehicle windowpane antenna apparatus comprises a defogger for defogging a vehicle window, which is constituted of strip conductor at least including a plurality of horizontal wires and a pair of bus bars, the bus bars being arranged on a window glass surface and each opposed to a metal section of a window frame with a bus-bar gap therebetween, a unit for separating the power source line and the defogger from each other in a high-frequency manner, vertical wires crossing the horizontal wires to form the defogger in a mesh pattern having meshes, a length of a longer side of each of the meshes being smaller than a wavelength of received wave, and a driven antenna having a height and provided close and opposite to the defogger with a clearance therebetween in such a manner that one side of the driven antenna is mutually coupled to one side of the defogger, the bus-bar gap being set to 50 mm to 70 mm, the clearance being set to 5 mm to 15 mm, the height of the driven antenna being set to 100 mm to 250 mm, the number of vertical wires being one or more, and the power source line and the bus bars constitute an open circuit therebetween.