An Ultra Low-Power Neuromorphic Bandpass Filter for Autonomous Cars

An ultra low power neuromorphic bandpass filter (BPF) for dedicated short range communication system is proposed. The filter is designed for an intermediate frequency receiver for a passband of 75 MHz with 37.5 MHz center frequency. In an effort to improve the filter performance without compromising power consumption; a standard Rm-C BPF structure is incorporated within the modified Izhikevich neuron to design the neuromorphic bandpass filter. Implemented in 45 nm CMOS technology, the proposed bandpass filter consumes 100.8 nW at a supply voltage of 0.5 V. The neuromorphic bandpass filter demonstrates excellent figure-of-merit (FOM) of -181.5 dB for a spurious free dynamic range of 27.1 dBm.