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:
May. 26, 2009
Filed:
Jun. 05, 2006
Yasunori Suzuki, Yokohama, JP;
Shoichi Narahashi, Yokohama, JP;
Yasunori Suzuki, Yokohama, JP;
Shoichi Narahashi, Yokohama, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
A power series type predistorter for multi-frequency bands includes a linear transmission path Pprovided with a delay elementand distortion generating paths Pand Pfor a plurality of frequency bands in parallel; wherein each of the distortion generating paths Pand Pfor a plurality of frequency bands includes variable band signal extractorsandfor extracting a signal in each frequency band from input signals and distortion generatorsandwhich is provided with the extracted signals and which generates at least one of the odd number distortion components of the signals and making it as an output from the distortion generating paths Pand Pfor frequency bands; and wherein the frequency band controllercontrols frequency bands of the variable band signal extractorsand