Automotive radar chip sets operating in the E-band range (60GHz to 90GHz) require design with a suitable electromagnetic wave simulator (such as HFSS or CST). If you need to verify a design or have a custom design of transitions, microstrip to waveguide launch or design of a horn antenna then contact me. I’ve already produced several designs as a consultant in the 60GHz to 80GHz range.
I’ve worked with Freescale (77GHz Chipsets ME2001) and Infineon RRN7745P or RTN7735P eWLB Radar dies in addition to point-to-point RFIC chips.
77GHz microstrip/CPW to circular waiveguide launch on a 5 mil PCB.