Method and apparatus for reducing re-radiation using techniques of universal frequency translation technology

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.