Automotive radars are a key sensor in modern and future cars by contributing to life-saving driving assistance functions. This PhD studies the feasibility of automotive radar receivers at an operating frequency of 140 GHz. Millimeter wave design tools are studied to support this activity and a transformer-based impedance matching method is developed. A complete model description of N-path circuits is proposed to enable mixer-first receivers that features a high linearity and a low noise figure. Multiple receivers are finally implemented to provide different possibilities to answer to the constraints of the automotive radar context.
