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. 10, 2001
Filed:
Jun. 02, 1999
Applicant:
Inventor:
Hidetoshi Oka, Osaka, JP;
Assignee:
Nippon Sheet Glass Co., Ltd., Okaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q 1/32 ;
U.S. Cl.
CPC ...
H01Q 1/32 ;
Abstract
A glass window antenna system for motor vehicles, in which a receiving sensitivity in an AM band is increased, is provided. One AM/FM antenna pattern is provided on a rear window, which has a pattern mainly receiving a FM band while maintaining an AM receiving characteristic, and an AM antenna pattern is provided which has an antenna pattern for obtaining AM receiving characteristic. An AM voltage received by the AM/FM antenna pattern and an AM voltage received by the AM antenna patterns are synthesized by superimposing the AM received voltage of the AM antenna patterns to the AM received voltage of the AM/FM antenna pattern through a low-pass filter.