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:
Sep. 12, 2006
Filed:
Feb. 01, 2005
Applicants:
Kyoichi Iigusa, Kyoto, JP;
Takuma Sawaya, Kyoto, JP;
Takashi Ohira, Kyoto, JP;
Hiroki Tanaka, Kyoto, JP;
Inventors:
Kyoichi Iigusa, Kyoto, JP;
Takuma Sawaya, Kyoto, JP;
Takashi Ohira, Kyoto, JP;
Hiroki Tanaka, Kyoto, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 19/00 (2006.01); H01Q 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An array antenna includes a feeder element, a parasitic element implemented by a slot line, a variable capacitance element, and a directivity switching unit. The variable capacitance element is loaded in the slot line. The directivity switching unit supplies a control voltage to the variable capacitance element in order to vary the capacitance, and switches directivity of the array antenna.