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:
Jun. 19, 2007
Filed:
Nov. 19, 2001
Adrianus Van Bezooijen, Nijmegen, NL;
Marc Victor Arends, Eindoven, NL;
Hermana Wilhelmina Hendrika DE Groot, Eindhoven, NL;
Adrianus Van Bezooijen, Nijmegen, NL;
Marc Victor Arends, Eindoven, NL;
Hermana Wilhelmina Hendrika De Groot, Eindhoven, NL;
NXP B.V., Eindhoven, unknown;
Abstract
A DC-offset correction circuit (I, Q) for a low-IF or zero-IF receiver, comprises a DC-offset control loop (O, O) embodied by: a summing device (--) having a signal path input (--), a DC control input (--), and a summing output (--); and an offset determining means (--) coupled between the summing output (--) and the DC control input of the summing device (--). The DC-offset correction circuit (I, Q) further comprises a DC blocking circuit (--) coupled to the summing output (--) of the summing device (--) and having a DC blocking output (--) for providing an offset corrected output signal. The DC-offset control loop (O, O) and the DC blocking circuit (--) advantageously interact in correcting DC offset.