Experimental evaluation of 61 GHz differential compensated chip-on-board interconnect for FMCW radar

This paper introduces a 61 GHz Chip-on-Board interconnects between differential transceiver chip and differential antenna array. A compact differential bond wire compensation network design using stepped-impedance transmission lines is investigated for better insertion loss and bandwidth versus another double-bond wire compensation network. The compensation network is employed to interconnect an FMCW radar transceiver chip to on-board antenna array. The radar performance is then measured to verify the interconnect.