In order to 'simulate' logarithmic axis as are used in the frequency characterstic of n-th order filters, i used geogebra to make one with this first attempt. It is showing a pass band frequency characteristic of an amplifier with nL-th order low pass en nH-th order high pass behaviour. The curves are ideal and tje separately made low pass and high pass functions can be made visible also. Just play with it and send me comments if you like. I am planning also to add the phase characteristic, so in the end i will have a full Bodediagram. Peter van der Jagt, petrusja at live.nl. Arnhem, The Netherlands
