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:
Nov. 26, 2002
Filed:
Mar. 02, 2000
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/42 ;
U.S. Cl.
CPC ...
H01Q 1/42 ;
Abstract
The ground conductor, the side conductor, and the ceiling conductor surround the antenna element, which is connected to the coaxial power supply part arranged on the surface of the ground conductor. The ceiling conductor is arranged to face the ground conductor with the antenna element therebetween. The ceiling conductor is provided with an opening whose size, shape, and position are changed to vary the directivity of radio waves.