Differential Akerberg Mossberg Bessel Low Pass Filter

Problem:
How does a designer make a Differential Akerberg Mossberg low pass Bessel filter?

Solution:
Use the circuit below:



Differential filters are symmetrical. Passive components are mirror imaged on the top and bottom of the schematic. Components closing the top loop have an "A" suffix, and those closing the bottom loop have a "B" suffix.