EMRFD Message Archive 2540

Message Date From Subject
2540 2008-12-30 11:14:21 joop_l Equal inductor low pass filter - name?

Some time ago I found a document of some HP equipment with an elliptic
style low pass filter. Not sure anymore which document that was.

Anyway, the interesting thing was that all inductor values were equal.
It is uploaded here:
Scaling it to a different frequency showed it can work nicely as a
post DDS filter. This could simplify the search for high quality smd
inductors when only a single value is needed.

Does anybody recognize this type of filter? In the filter tools I have
I did not find "equal inductor" functionality in the elliptic/cauer
design options.
Does it have a specific name that I can use to search further information?


Joop - pe1cqp