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. 07, 2015
Filed:
Jan. 09, 2013
King Fahd University of Petroleum and Minerals, Dhahran, SA;
King Abdulaziz City for Science and Technology, Riyadh, SA;
Hussain Alzaher, Dhahran, SA;
KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran, SA;
KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY, Riyadh, SA;
Abstract
The fully integrated DC offset compensation servo feedback loop is an integrator that measures the output signal DC component, and then feeds back and subtracts the measured DC component from the input signal. A larger integrator time constant lowers the high pass corner frequency, which must be very small in order to minimize the loss of the low frequency component of the desired signals. The large time constant is achieved on an integrated circuit by the use of a class-AB fully differential opamp in conjunction with an R-2R ladder as a circuit element to accomplish an integrated large time constant integrator. The R-2R ladder is configured as a digitally programmable resistor.