Hello!
I designed a 2nd order bandpass Chebyshev filter in HFSS. I fabricated the sample and measured the s-parameters. Its a two port network and it should have R1, R2, C1 and C2.
I want calculate transient response of this filter and also the transfer function.
For that, I would like to get exact values of R1, R2, C1 and C2.
How can I extract these four values from measured S-parameters (recorded from VNA)? Or from the simulated s-parameters in HFSS?
Do we have any option in HFSS to extract resistance and capacitance values directly?
Thanks!!
I didn't understand that why you need R values?
Try this book may be it help,
"Microstrip Filters for RF/Microwave applications" by
Jia-Sheng Hong & M.J.Lancaster
Transient response can be calculated in CST.
Chebyshev is generally an LC filter. First I need to know two L's and two C's and then I have to calculate R's and put these R's and C's into the equations to find transfer function and transient response of my bandpass filter.
1. Using HFSS you can get RLGC values, which may help you.
2. Another way, you can model your filter using ideal components in cadence then by tuning the components you can match s parameters best fit with HFSS s parameters.
make all the components of the same kind equals (i.e. R1=R2 and C1=C2) it can helps.
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