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. 31, 1999
Filed:
Jan. 16, 1998
Hitoshi Kakizawa, Osaka, JP;
Nippon Sheet Glass Co., Ltd., , JP;
Toko, Inc., , JP;
Abstract
A window glass antenna apparatus comprises two antennas exclusively for receiving respective AM and FM radio signals, a first impedance transformer disposed between the antennas and a signal cable for transforming impedance in an AM frequency band from high impedance to low impedance, and a second impedance transformer provided at an output side of the signal cable for transforming impedance in the AM frequency band from low impedance to high impedance. The first impedance transformer includes a primary winding which has one end connected to the AM radio signal receiving antenna, and a tap provided at a primary side thereof and connected to FM radio signal receiving antenna. The second impedance transformer includes a secondary winding which has one end for serving as an AM radio signal output terminal, and a tap provided at a secondary side thereof for serving as an FM radio signal output terminal.