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:
Jul. 05, 2011
Filed:
Dec. 27, 2007
Takeshi Takano, Kawasaki, JP;
Yasuyuki Oishi, Kawasaki, JP;
Tokuro Kubo, Kawasaki, JP;
Toru Maniwa, Kawasaki, JP;
Takeshi Takano, Kawasaki, JP;
Yasuyuki Oishi, Kawasaki, JP;
Tokuro Kubo, Kawasaki, JP;
Toru Maniwa, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A DC/DC converter capable of controlling an output signal using a broadband signal input is provided. By employing the above DC/DC converter as a power supply, a highly efficient power amplifier can be configured. The above DC/DC converter includes two class-C amplifiers, a rectifier circuit connected between each output of the two class-C amplifiers, and an oscillator of a predetermined frequency signal. The predetermined frequency signal output from the oscillator is input to each of the two class-C amplifiers, and by controlling the phase difference of the predetermined frequency signal input to the two class-C amplifiers, the magnitude of a direct current voltage output from the rectifier circuit is made variable.