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:
Mar. 26, 2013
Filed:
Jul. 20, 2009
Applicant:
Go Utamaru, Ibaraki, JP;
Inventor:
Go Utamaru, Ibaraki, JP;
Assignee:
Advantest Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 3/46 (2006.01); H04L 27/36 (2006.01); H01Q 11/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is a modulation apparatus that quadrature modulates a periodic signal, comprising an I-side signal output section that outputs an I-component signal; a Q-side signal output section that outputs a Q-component signal; a quadrature modulator that quadrature modulates the periodic signal with the I-component signal and the Q-component signal; an I-side correcting section that corrects the I-component signal according to an error of the quadrature modulator; and a Q-side correcting section that corrects the Q-component signal according to the error of the quadrature modulator.