Patent ID: 7340234

Claim:
An Ultra Wide Band (UWB) transmitting and receiving device including a receiver and a transmitter, the device comprising: a coupler connected to the transmitter for applying an output signal of the transmitter to the receiver; a switch connected between the coupler and the receiver for selectively applying an output signal of the coupler to the receiver, and feeding back the output signal of the coupler to a Digital Signal Processing (DSP) device; the Digital Signal Processing (DSP) device connected to the receiver for feeding back the output signal of the coupler through the receiver, generating a calibration signal using the feed-back output signal of the coupler according to a DC offset cancellation algorithm and applying the calibration signal to an adder included in the transmitter; the adder connected to the DSP device for adding a baseband transmission signal from the transmitter and the calibration signal a modulator for modulating a signal from the adder; and a transmitter amplifier for amplifying the modulated signal.