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:
Oct. 30, 2018
Filed:
Nov. 15, 2017
Iowa State University Research Foundation, Inc., Ames, IA (US);
Yuming Zhuang, Ames, IA (US);
Degang Chen, Ames, IA (US);
Iowa State University Research Foundation, Inc., Ames, IA (US);
Abstract
The present disclosure relates to a signal generator with self-calibration including a main digital-to-analog converter (DAC), a calibration DAC, a summing buffer structure, a two-path filter structure, an analog-to-digital converter (ADC), and a control system. The main DAC provides a main DAC output signal with main DAC distortion. The main DAC output signal is calibrated by a calibration DAC output signal to correct at least a portion of the main DAC distortion. The calibration DAC output signal includes information about the main DAC distortion and is generated by a feedback loop including the summing buffer structure, the two-path filter structure, the filter buffer, the ADC, the control system, and the calibration DAC.