Patent ID: 7994969

Claim:
A radar system comprising: an orthogonal frequency division multiplexing (OFDM) modem outputting an OFDM modulation; and a frequency scanning antenna operably coupled with said OFDM modem, said frequency scanning antenna outputting OFDM modulated radio frequency (RF) energy in response to said OFDM modulation, said frequency scanning antenna further receiving said OFDM modulated radio frequency (RF) energy reflected from an object, said OFDM modem demodulating said OFDM modulated radio frequency (RF) energy reflected from the object, directionality of said frequency scanning antenna being determined by a sub-band carrier frequency of said OFDM modulation, wherein said frequency scanning antenna is a slotted waveguide and wherein dimensions of each of slots of said slotted waveguide are varied to control the array amplitude weights of each of slot radiator elements.