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. 08, 2009
Filed:
Mar. 26, 2004
Kazushi Nishizawa, Tokyo, JP;
Nobuyasu Takemura, Tokyo, JP;
Hiroaki Miyashita, Tokyo, JP;
Yoshihiko Konishi, Tokyo, JP;
Izuru Naitou, Tokyo, JP;
Yoshihiko Imai, Tokyo, JP;
Kazushi Nishizawa, Tokyo, JP;
Nobuyasu Takemura, Tokyo, JP;
Hiroaki Miyashita, Tokyo, JP;
Yoshihiko Konishi, Tokyo, JP;
Izuru Naitou, Tokyo, JP;
Yoshihiko Imai, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A variable power distributor capable of calculating an error between transmission lines of two systems after building a variable power distributor and correcting the set value of the amplitude and the phase according to the error, an error detection method for the variable power distributor, and a set value correction method is provided. The variable power distributor includes: a two-way distributor provided on an input side of a set of transmission lines consisting of a first and a second transmission line; a 90-degree hybrid circuit provided on an output side of the set of transmission lines; and a variable phase shifter, variable resistance attenuator, and a power amplifier provided on each line of the set of transmission lines between the two-way distributor and the 90-degree hybrid circuit. The variable power distributor further includes an error detection unit that monitors an output signal from the 90-degree hybrid circuit and detects an error existing in each component between the first and the second transmission lines based on the monitor output.