Patent ID: 8237604

Claim:
A system comprising: a radar unit having a center frequency in the UWB (ultra wide band) radar band; a transmit module connected to a radar impulse output of the UWB radar unit, wherein the transmit module produces V band frequencies that are up-converted from the radar impulse output from the radar unit; an active array antenna connected to the transmit module; a receive module connected to the active array antenna, wherein: the receive module produces UWB frequencies that are down-converted from the V band input from the active array antenna; and a receive input of the UWB radar unit is connected to the receive module; and a band pass filter, wherein: the band pass filter is connected between the transmit module and the active array antenna; the transmit module includes a heterodyne converter using a local oscillator at about 61 GHz that up-converts a UWB frequency band centered at 5 GHz to produce frequency sidebands centered approximately at 56 GHz and 66 GHz; the band pass filter selects a 56 GHz sideband of the up-converted frequencies and passes a band at approximately 53 GHz to 59 GHz to the active array antenna.