Hierarchical Polyphase Channelizer

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WARNING: Be aware of this bug if you are using this block https://github.com/gnuradio/gnuradio/pull/5567 it will be fixed soon but might not be in your version of GR

A helpful wrapper to the Polyphase Channelizer block, making it easier to use. It is written as a Python Hier block, see https://github.com/gnuradio/gnuradio/blob/master/gr-filter/python/filter/pfb.py

See Polyphase Filterbanks for more info on Polyphase Filters within GNU Radio.


Number of Channels
The number of channels to split into.
Number of Filterbanks
The number of filterbank blocks to use (default=2).
The taps to use. If this is None then taps are generated using optfir.low_pass.
Output Channels
Which channels to output streams for (a list of integers) (default is all channels).
Stop band attenuation.
Fraction of Channel to Keep
The fraction of the channel you want to keep.
Transition Band
Transition band with as fraction of channel width.
Passband Ripple
Pass band ripple in dB

Example Flowgraph[edit]

This flowgraph can be found at [1]

Polyphase channelizer demo fg.png

Example Output[edit]

Polyphase channelizer demo out.png

Source Files[edit]

C++ files
Header files
Public header files
Block definition