Polyphase channelization system

Details Polyphase channelization system Polyphase channelization system

2008-12-05

2010-10-05

Kim, Kevin Y (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

Reissue Patent

active

RE041797

ABSTRACT:
A polyphase channelizer converts an intermediate frequency wideband signal into a complex signal that is sampled by parallel analog-to-digital converters having a bank of samplers respectively clocked by staggered clocking signals for respective converters for feeding I and Q quadrature samples to a polyphase filter bank of finite impulse response filters driving a fast Fourier transform processor for providing channelized digital signal outputs. The parallel analog-to-digital converters can operate at lower speeds but are parallel connected for effectively operating at required higher speeds. The channelizer channelizes the wideband signal using a polyphase clock for enabling high speed sampling and converting through low speed parallel analog to digital converters.

REFERENCES:
patent: 5909435 (1999-06-01), Apelewicz
patent: 6081215 (2000-06-01), Kost et al.
patent: 6356569 (2002-03-01), Sonalkar et al.
patent: 6813320 (2004-11-01), Claxton et al.
patent: 6823169 (2004-11-01), Marko et al.

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