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. 08, 2011
Filed:
Apr. 16, 2007
Masaya Umemura, Kawasaki, JP;
Yukihide Inagaki, Kawasaki, JP;
Isao Takita, Kawasaki, JP;
Tsutomu Hara, Kawasaki, JP;
Masaya Umemura, Kawasaki, JP;
Yukihide Inagaki, Kawasaki, JP;
Isao Takita, Kawasaki, JP;
Tsutomu Hara, Kawasaki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A radio equipment, wherein an attenuator () is inserted between antennas () and a radio module (), and output and input sensitivities are raised and lowered simultaneously so as to keep the balance of a radio covering range with an input receiver coverage at a constant, and the antenna () and the antenna () with attenuator are switched over by a switch () to increase and decrease the radio coverage range and input receiver coverage while keeping the balance of the dynamic radio coverage range with the input receiver coverage.