Down-conversion of an electromagnetic signal with feedback control

Abstract

Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal, and applications thereof are described herein. Reducing or eliminating DC offset voltages and re-radiation generated when down-converting an electromagnetic (EM) signal is also described herein. Down-converting a signal and improving receiver dynamic range is also described herein.

What is claimed is: 
     
         1 . An apparatus for down-converting an electromagnetic signal and reducing DC offset voltages and re-radiation, comprising:
 a first UFD module that receives an input signal, wherein said first UFD module down-converts said input signal according to a first control signal and outputs a first down-converted signal;   a second UFD module that receives said input signal, wherein said second UFD module down-converts said input signal according to a second control signal and outputs a second down-converted signal; and   a first subtractor module that subtracts said second down-converted signal from said first down-converted signal and outputs a first channel down-converted signal.