Patent ID: 7436350
Filing Date: 2008-10-14
Classification: G01S

Abstract:
1. A combined multi-frequency transmitter and receiver with common antenna system, comprising: a first and second antenna; a multiple frequency transmitter and receiver; a first antenna module coupled to said multiple frequency transmitter and receiver and said first antenna which provides an interface between said multiple frequency transmitter and receiver and said first antenna; and a second antenna module coupled to said multiple frequency transmitter and receiver and said second antenna which provides an interface between said multiple frequency transmitter and receiver and said second antenna; wherein each of said first and second antenna modules includes a beam forming network coupled to a switched divider and combiner, said beam forming network and said switched divider and combiner providing amplitude and phase calibration whereby said multi-frequency transmitter and receiver transmits and receives signals of at least two distinct frequencies, said multiple frequency transmitter and receiver being operable to determine a range of another object from a location of said multiple frequency transmitter and receiver.