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A CMOS ultra-wideband transmitter with bi-phase modulation for 22–29 GHZ vehicular radar application

This paper presents the design and simulation of a CMOS ultra-wideband transmitter using TSMC 0.13µm CMOS technology. The operating frequency band of the transmitter is from 22 to 29 GHz for the application of UWB vehicular shor-trange radar (SRR). The proposed transmitter has a pulse-modulated carrier-based architecture with bi-phase modulation. The simulation results show that the power spectral density of the transmitter output complies with the FCC regulation, and has a center frequency of 25.2 GHz and a −10 dB bandwidth from 22.9 to 27.6 GHz.