Patent ID: 7071869
Filing Date: 2006-07-04
Classification: G01S,H03B

Abstract:
1. A radar system comprising: a quadrature push—push oscillator for generating four harmonics with a 90-degree phase difference from each other, and for producing two-balanced 2 a first coupler block for radiating one of the 2 a second coupler block for terminating the other 2 a power combiner for combining a transmitted signal that is leaked from the first and second coupler blocks with the received signal that is radiated through the antenna; a 90-degree phase shifter for shifting the phase of the output signal from the power combiner by 90 degrees; a first quadrature mixer for mixing an in-phase harmonic signal inputted from the quadrature push—push oscillator with the output signal from the power combiner, and outputting a first baseband signal; and a second quadrature mixer for mixing a quadrature-phase harmonic signal inputted from the quadrature push—push oscillator with the output signal from the 90-degree phase shifter, and outputting a second baseband signal.