公开(公告)号：US20140269985A1

公开(公告)日：2014-09-18

申请号：US13828989

申请日：2013-03-14

Applicant: ANALOG DEVICES TECHNOLOGY

Inventor： Haim Primo ,  Manish J. Manglani ,  Yosef Stein

IPC: H04B1/04

CPC classification number: H04B1/0475 ,  H03D7/165 ,  H03D2200/0043 ,  H04L25/061 ,  H04L27/364 ,  H04L27/366

Abstract: Apparatus and methods for estimating a direct current offset in an upconverter are disclosed. Samples of a first signal are received. Values of a compensation signal are retrieved. For example, the compensation signal can be a component in a modified baseband signal, wherein the modified baseband signal is upconverted, downconverted, and filtered to generate the first signal. An estimate of a first DC offset induced by an upconverter is generated based at least partly on at least two selected samples of the first signal and corresponding values of the compensation signal.

Abstract translation: 公开了用于估计上变频器中的直流偏移的装置和方法。 接收第一信号的样本。 检索补偿信号的值。 例如，补偿信号可以是修改的基带信号中的分量，其中修改的基带信号被上变频，下变频和滤波以产生第一信号。 至少部分地基于第一信号的至少两个选定样本和补偿信号的对应值来生成由上变频器引起的第一DC偏移的估计。