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:
Aug. 05, 2014
Filed:
Aug. 21, 2009
Sotaro Shinkai, Osaka, JP;
Wataru Noguchi, Hyogo, JP;
Hiroyuki Yurugi, Osaka, JP;
Masahiko Nagoshi, Osaka, JP;
Akihiko Shiotsuki, Osaka, JP;
Osamu Tanaka, Osaka, JP;
Toyoshi Yamada, Osaka, JP;
Nobuhiko Arashin, Osaka, JP;
Sotaro Shinkai, Osaka, JP;
Wataru Noguchi, Hyogo, JP;
Hiroyuki Yurugi, Osaka, JP;
Masahiko Nagoshi, Osaka, JP;
Akihiko Shiotsuki, Osaka, JP;
Osamu Tanaka, Osaka, JP;
Toyoshi Yamada, Osaka, JP;
Nobuhiko Arashin, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An antenna unit is provided with: steerable antennas, each having one active antenna element and two parasitic antenna element; and metal blocks. Each of the active antenna elements is associated with at least one of the metal blocks such that the metal block is disposed remote from the active antenna element by a predetermined distance and operates as a reflector for the active antenna element. Each of the parasitic antenna elements is provided with a switching circuit for changing an electrical length of the parasitic antenna element, and the parasitic antenna element operates as a reflector for an active antenna element of the same steerable antenna as the parasitic antenna element by changing the electrical length using the switching circuit.