A 5.9 GHz DSRC transmitter IC for vehicle wireless communication system

This paper present a 5.9 GHz dedicated short range communication (DSRC) transmitter for wireless vehicular communication that satisfies specification of IEEE 802.11p standard mask c. The proposed transmitter consists of programmable gain amplifier (PGA), up-conversion mixer, drive amplifier, and synthesizer. Passive mixer, push-pull local oscillator (LO) buffer, and intermodulation distortion (IMD) canceller are applied to achieve high linearity and low power consumption. The transmitter is designed and fabricated on CMOS 0.18 μm process. The total power consumption is 63 mA at 1.8 V. A phase noise of synthesizer is -109.4 dBc/Hz at 1MHz offset. The transmitter total noise figure (NF) and adjacent channel leakage ratio (ACLR) are 14.2 dB and - 53.6 dBc, respectively.