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:
Jun. 15, 1993
Filed:
Feb. 25, 1991
Tohru Hirotsu, Matsusaka, JP;
Tokio Tsukada, Matsusaka, JP;
Yoji Nagayama, Matsusaka, JP;
Kazuhiko Fujii, Matsusaka, JP;
Masao Shinnai, Matsusaka, JP;
Kazuya Nishikawa, Matsusaka, JP;
Central Glass Company, Limited, Ube, JP;
Abstract
The invention provides a vehicle window glass antenna for transmission and reception of ultrashort waves used for mobile phones and/or personal radios. The antenna has a primary antenna which is a combination of at least two vertical (in the sense of perpendicular to a horizontal line) elements and at least two horizontal elements each of which directly connects with at least one of the vertical elements and a secondary antenna which is essentially a horizontally elongate element located in a space between the primary antenna and the lower or upper edge of the window glass. The primary antenna is arranged within a rectangular area having a limited horizontal width and a limited length, and the horizontal element of the secondary antenna has a limited length. The antenna feeder is a coaxial cable, and the primary antenna and the secondary antenna are connected with the inner conductor and the outer conductor of the coaxial cable, respectively. In a preferred embodiment the major part of the primary antenna is in the form of a rectangular grid.