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Cochlea-Based RF Channelizing Filters

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5 Author(s)
Christopher J. Galbraith ; Dept. of Electr. Eng. & Comput. Sci., Univ. of Michigan, Ann Arbor, MI ; Robert D. White ; Lei Cheng ; Karl Grosh
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A new type of contiguous-channel RF multiplexing filter has been developed. The filter topology is derived from an electrical-mechanical analogy of the mammalian cochlea, and this channelizer retains the desirable features of the cochlea including multiple-octave frequency coverage, a large number of output channels, and an enhanced high-order upper stop-band response. Results of two 20-channel, 20-90-MHz channelizer prototypes, one with constant fractional bandwidth channels and another with constant absolute bandwidth channels, are presented and agree well with theory.

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IEEE Transactions on Circuits and Systems I: Regular Papers  (Volume:55 ,  Issue: 4 )