A 76ghz CMOS Low-PDC Transmitter with 15dbm PSAT at 150C for Automotive Radar

In this paper, we report a 76 GHz transmitter with 15 dBm PSAT at 150C for automotive radar. In order to realize high PSAT and low PDC at high temperature, we adopted a new circuit configuration. The transmitter doubles the frequency of the signal from the PLL (38 GHz) and outputs the signal of 76 GHz. Unlike conventional transmitters, we divided the signal before the frequency doubler and combined the signals at the output of the PA. With this configuration, it is possible to reduce the PDC of the 76 GHz-band amplifier. The proposed transmitter demonstrates PSAT of more than 15 dBm at 150C with PDC of 0.37 W. The transmitter is fabricated in 40-nm CMOS and the area is 340-um x 1120-um.