FMCW Radar With Enhanced Resolution and Processing Time by Beam Switching

We present the design of a novel K-band radar architecture for short-range target detection. Applications include direction finding systems and automotive radar. The developed system is compact low cost employs substrate-integrated-waveguide (SIW) antenna arrays 4×4 Butler matrix (BM) beamformer. In particular, proposed transmits frequency modulated continuous-wave (FMCW) signal at 24 GHz, scanning horizontal plane by switching four input ports BM in time. Also, conjunction with new processing method received signals, able to provide enhanced resolution reduced computational burden when compared more standard single-input multiple-output (SIMO) multiple-input (MIMO) systems. performance has also been measured an anechoic chamber results have analyzed illuminating identifying test targets which are 2° apart, while making comparisons SIMO MIMO FMCW radars. Moreover, architecture, appropriate design, can be scaled operate other microwave millimeter-wave frequencies, providing computationally efficient multi-channel platform.