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grasp antenna
Very accurate for reflector antennas, its gui takes some getting used to, but if you spend some time going thru the examples you will catch on.
You can get some more info from the TICRA.com website.
Re: CPW using HFSS
For Wave ports:
If you are using wave ports, set the integration line from one of the grounds to the signal line. You need to make sure the port is big enough so the port impedance is calculated correctly (typically the port width is 3x the width of the ground-to-ground...
Not sure about Zeland, but HFSS uses an algorithm (Adaptive Lanczos-Pade Sweep) to reduce the order of the finite element matrix . This enables it to provide an accurate solution over a wide frequency range by only simulating the model at a few discrete frequency points within that range. In...
qucs ibis
You can find the origin of the term Touchstone here:
h**p://www.microwaves101.com/encyclopedia/historyCAD.cfm#touchstone
It seems that Touchstone was actually software created by EEsof. The term touchstone evolved from there to become a specific format for s-parameter files with the...
ads capacitor values
The formula for the Interdigital Capacitor can be found on pg. 133 of "Microstrip Lines and Slotlines" by Garg, Bahl, Bhartia, and Gupta.
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