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:
Dec. 11, 1990
Filed:
Dec. 09, 1988
Applicant:
Inventors:
Katsuya Tsukamoto, Osaka, JP;
Toshio Abiko, Osaka, JP;
Assignee:
Matsushita Electric Works, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q / ;
U.S. Cl.
CPC ...
3437 / ; 343846 ;
Abstract
A planar antenna is provided, at optional power-supply terminals in power-supply circuit pattern provided in parallel with radiation circuit pattern and ground conductor layer, with additional power-supply terminals having a phase difference of an integer multiple of wavelength .lambda.g, while the radiation circuit pattern is provided with additional radiation elements respectively corresponding to each of the additional power-supply terminals, whereby the planar antenna can be made to attain a high gain with the minimum dimension in accordance with the field strength of satellite broadcasting electric waves.