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. 30, 1993
Filed:
Feb. 21, 1991
Applicant:
Inventors:
Kaoru Sakurai, Kawasaki, JP;
Harunori Murakami, Machida, JP;
Hiroshi Iijima, Yokohama, JP;
Masaru Maeda, Kawasaki, JP;
Koji Matsuda, Zama, JP;
Assignee:
Nippon Sheet Glass Co., Ltd., Doshomachi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q / ; H01Q / ; H01Q / ; H04B / ;
U.S. Cl.
CPC ...
343713 ; 343704 ; 343850 ; 455290 ;
Abstract
An inductance element is arranged to parallel resonate with a ground stray capacitance component of an antenna element on a motor vehicle and a feeder cable to a receiver. Matching means is provided to compensate for a Q-factor of the parallel resonance for improving a reception gain over a wide range in a reception band.