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. 13, 2010
Filed:
May. 31, 2006
Hiroyoshi Ishikawa, Kawasaki, JP;
Hajime Hamada, Kawasaki, JP;
Kazuo Nagatani, Kawasaki, JP;
Nobukazu Fudaba, Kawasaki, JP;
Tokuro Kubo, Kawasaki, JP;
Hiroyoshi Ishikawa, Kawasaki, JP;
Hajime Hamada, Kawasaki, JP;
Kazuo Nagatani, Kawasaki, JP;
Nobukazu Fudaba, Kawasaki, JP;
Tokuro Kubo, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
As in a conventional technology, a hard clipping process and a filtering process are performed on a transmission signal. An original transmission signal is subtracted from a signal on which the processes have been performed, and an inverse sign signal to the suppressed signal is retrieved. By giving a gain to the signal, and adding up to the original transmission signal, a peak voltage is suppressed. The gain can be a ratio of a difference signal between a hard clipped signal and an original transmission signal to a signal of suppression of a filtered signal from the original transmission signal, or a value determined by a simulation depending on the cutoff frequency of a low pass filter used in the filtering process.