
Matt Ettus on Fading Models
June 22, 2022

Building a PSK and QAM Modulator in Python
June 8, 2022

DFT Frequency Resolution Explained
March 16, 2022

Designing FIR Filter Gain
February 23, 2022

Why an FIR Filter Should Have an Odd Length
December 29, 2021

Efficient Real to Complex Conversion with a Half Band Filter
December 15, 2021

Half Band Filter Design Function in Python
December 8, 2021

Square Root Raised Cosine Filter in Python
November 10, 2021
![Figure 4: The PFB half band filter structure after folding the even-symmetric filter weights hA[n] and ignoring the zero weights in hB[n].](https://i0.wp.com/www.wavewalkerdsp.com/wp-content/uploads/2021/10/polyphaseHalfBandFoldedNoZeroMultiply.png?resize=150%2C150&ssl=1)
Folding a Polyphase Half Band Filter: Lemon Squeezer Style
October 6, 2021
![Figure 1: The weights of the partitioned half band filter hA[n] and hB[n].](https://i0.wp.com/www.wavewalkerdsp.com/wp-content/uploads/2021/09/halfBandFilterPolyphase_HBFImpulseResponsePolyphasePartition-1.png?resize=150%2C150&ssl=1)
Polyphase Half Band Filter for Decimation by 2
September 29, 2021