A Bio-Inspired Active Radio-Frequency Silicon Cochlea

@article{Mandal2009ABA,
  title={A Bio-Inspired Active Radio-Frequency Silicon Cochlea},
  author={Soumyajit Mandal and Serhii M. Zhak and Rahul Sarpeshkar},
  journal={IEEE Journal of Solid-State Circuits},
  year={2009},
  volume={44},
  pages={1814-1828}
}
Fast wideband spectrum analysis is expensive in power and hardware resources. We show that the spectrum-analysis architecture used by the biological cochlea is extremely efficient: analysis time, power and hardware usage all scale linearly with N, the number of output frequency bins, versus N log(N) for the Fast Fourier Transform. We also demonstrate two on-chip radio frequency (RF) spectrum analyzers inspired by the cochlea. They use exponentially-tapered transmission lines or filter cascades… Expand
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