77 GHz compact multi-port radar sensor for automotive applications

A compact millimeter wave radar sensor, suitable for automotive applications, is presented in this paper. The work is focused on the design of a multi-port receiver, integrated on a thin ceramic substrate. A multi-port computer model for advanced system simulations is implemented using S-parameter measurements. A test bench is built using standard laboratory equipment, a waveguide transmitter, and the prototype receiver. Simulated and experimental results show a very good relative speed and range measurement precision.