Model of the Month
Modeling an RC polyphase filter
Here is a simple way of modeling a passive polyphase filter that can generate 4-phase signals from 2-phase sinusoidal inputs.
September 2022
Tip of the Month
Designing a common-class filter
Check out this Python script that designs a Butterworth, Bessel, Chevyshev, or elliptic filter according to your specifications and computes the model parameters for the 'filter' primitive.
Primitive of the Month
filter
This primitive models a linear filter, of which transfer function is specified using a set of pole/zero frequencies.
Latest Issues
March 2026
EQCHECK, Adaptive Decision-Feedback Equalizer, and More
February 2026
XMODEL at DVCon US, Introducing EQCHECK, and More
January 2026
Generating Random Step Sequences for Stress-Testing, Measuring Single-Bit Responses, and More
December 2025
Season's Greetings, Checking a Clocked Comparator's Correct Output, and More
November 2025
Checking the Settling of an Analog Signal, Handling Inherited Nets with Legacy SPICE Netlisters, and More