Patent ID: 8380772
Filing Date: 2013-02-19
Classification: H03H

Abstract:
1. A multi-rate filter bank, comprising: an anti-aliasing filter, for receiving an anti-aliasing input signal; a plurality of multiplier block modules, sequentially coupled with each other in series, for receiving an original signal and generating a plurality of processed signals sequentially, and for receiving a plurality of block input signals and a select signal, wherein each of the multiplier block modules is configured into a decimation block or an expanding anti-aliasing filter according to the select signal; a folding block, for receiving the select signal and a folding input signal and accumulating the anti-aliasing input signal and the block input signals received by the multiplier block modules that are configured into the decimation block according to the select signal to generate a folding block output signal; and a data composer, coupled to the anti-aliasing filter, the folding block, and the multiplier block modules, for receiving and composing the folding block output signal and outputs of the multiplier block modules and the anti-aliasing filter and generating an anti-aliasing filter output signal.