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:
Jan. 24, 2006
Filed:
Apr. 07, 2005
Toru Matsuura, Katano, JP;
Kaoru Ishida, Shijonawate, JP;
Makoto Sakakura, Uji, JP;
Seiji Fujiwara, Yokosuka, JP;
Toru Matsuura, Katano, JP;
Kaoru Ishida, Shijonawate, JP;
Makoto Sakakura, Uji, JP;
Seiji Fujiwara, Yokosuka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An amplitude frequency characteristic adjustment circuitis provided downstream of and connected to a distortion generation circuit. An amplitude difference between low-frequency-side and high-frequency-side distortion voltages is adjusted by the amplitude frequency characteristic adjustment circuit, and then their amplitudes and phases are adjusted by a vector adjustment circuit. This configuration makes it possible to suppress simultaneously both of low-frequency-side and high-frequency-side distortion voltages of a distortion generated by a wide-band class-AB power amplifier even if they are different in amplitude and phase.