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:
Dec. 31, 2013
Filed:
Oct. 01, 2009
Masatake Hangai, Tokyo, JP;
Kazutomi Mori, Tokyo, JP;
Kenichi Tajima, Tokyo, JP;
Yukihiro Tahara, Tokyo, JP;
Morishige Hieda, Tokyo, JP;
Masatake Hangai, Tokyo, JP;
Kazutomi Mori, Tokyo, JP;
Kenichi Tajima, Tokyo, JP;
Yukihiro Tahara, Tokyo, JP;
Morishige Hieda, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A multiport amplifier and a wireless device using the same are obtained in which isolation among output terminals is improved, whereby the quality of communication is improved. The multiport amplifier includes an input hybrid, an output hybrid, a plurality of amplifiers and a plurality of gain and phase control circuits that are inserted between the input hybrid and the output hybrid, a plurality of output coupling circuits that are inserted between the output hybrid and a plurality of output terminals so that they receive output extraction signals corresponding to a plurality of output signals, and a feedback circuit including a frequency selection circuit that is inserted between the plurality of output coupling circuits and the plurality of gain and phase control circuits.