kashyapastron
Newbie level 5
Hello,
I am designing a 5 pole combline filter. The problem I have been facing is that whenever I simulate a combline filter of order more than 3, the S11 response always shows lesser no of resonances and hence getting the required bandwidth and ripple levels is very hard. I tried to use both peter martin's equations and also the eigen mode analysis method to determine the rod spacing but to no avail. I'm attaching a HFSS file with one such simulation where only 3 resonances are distinct for a 5-pole filter. Please help
Thanks
I am designing a 5 pole combline filter. The problem I have been facing is that whenever I simulate a combline filter of order more than 3, the S11 response always shows lesser no of resonances and hence getting the required bandwidth and ripple levels is very hard. I tried to use both peter martin's equations and also the eigen mode analysis method to determine the rod spacing but to no avail. I'm attaching a HFSS file with one such simulation where only 3 resonances are distinct for a 5-pole filter. Please help
Thanks