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. 14, 1995
Filed:
Dec. 28, 1992
Applicant:
Inventors:
Kazuhiko Nakase, Tokyo, JP;
Tetsuyoshi Abiko, Kanagawa, JP;
Assignee:
Harada Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q / ; H01Q / ;
U.S. Cl.
CPC ...
343860 ; 343715 ; 343745 ; 455293 ;
Abstract
A shortened mast antenna with a compensating circuit between the antenna and a receiver and used in a state shorter than the resonant state of the antenna. The compensating circuit includes an FM compensating circuit made up with passive elements and compensating FM broadcast signals and an AM compensating circuit equipped with active elements which convert a high impedance into a low impedance so that the AM compensating circuit compensates AM broadcast signals. The attachment part of the antenna, to which the compensating circuit is directly connected, has a stray capacitance of 10 PF or less.