There are three steps to this notch filter:
Step 1
, Get the filter g-values, this sheet calculated the g values according to the Chebychev polynomial for a given N, but these can be obtained in a variety of ways from books or from a program freely available from this web page.
Step 2
, Calculate Zo for the filter (this sheet stops there).All section are lambda/4
Step 3
, Calculate length and width.One method is to use Linecalc which is part of ADS.For microstrip designs I have written a MathCAD sheet which is available from my wepage that works well for thin tracks, less well for thicker tracks. Also you can try
transcalc.sourceforge.net
for a Linecalc equivalent.
Yellow is user input, Green is output