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:
Aug. 05, 2025
Filed:
Sep. 28, 2023
Applicant:
Advantest Corporation, Tokyo, JP;
Inventor:
Koji Asami, Tokyo, JP;
Assignee:
ADVANTEST CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/04 (2006.01); H03M 1/06 (2006.01);
U.S. Cl.
CPC ...
H04B 1/04 (2013.01); H03M 1/0607 (2013.01);
Abstract
N (N≥2) D/A converters convert respective input data at a sampling frequency F. A digital signal processing unit generates N items of sub-band waveform data. Each of N items of sub-band waveform data is generated by frequency-shifting corresponding one of N sub-band components included in digital waveform data that represents the analog output signal, such that each sub-band waveform data has its maximum frequency below F/2. A local signal generating circuit generates N local signals having different frequencies.