A CMOS Integrated Analog Pulse Compressor for MIMO Radar Applications

Conventional radar pulse compressors use either surface acoustic wave devices or fast convolution processing, but both solutions have significant drawbacks. To overcome these drawbacks, an integrated analog pulse compressor for a multiple-input multiple-output (MIMO) radar has been developed with an 0.18-??m CMOS process using an arbitrary waveform generator, analog correlators, and analog-to-digital converters. The proposed scheme not only has advantages over conventional methods but also adds additional flexibility to the MIMO system. The die area is 5.67 mm², and the power consumption is 62.6 mW from the 1.8-V supply. Arbitrary waveforms such as the wavelet and the chirp signal have been demonstrated, and the average signal-to-noise ratio for the pulse compression is 18.09 dB. The identification of overlapping multiple chirp signals is successfully demonstrated.