FizTop
Newbie
Hello there!
In a nutshell i have successfully simulated and analyzed diff pair impedance using wave port excitations in driven terminal mode. But i faced a problem while tried to calculate same diff pair impedance using lumped ports excitations in driven terminal mode.
HFSS help says that it is possible to define diff pair using multiple lumped ports, and that is true - HFSS doesn't show any error or warning messages during analysis, but as a result i always get 100 Ohm diff impedance at any frequency. Important notes here that impedance normalization is off and terminals "matched" checkboxes are checked. Moreover no one of "normalization" settings are set to 100 Ohm! I have tried different settings combination - all don't work for me. Could anybody help me with that issue?
My project is in attachment, feel free to use it in your projects, if, ofcourse, you will make it work ;-)
HFSS EDT 2017.2.0
And this is how the result looks like. Strange, isn't it?
In a nutshell i have successfully simulated and analyzed diff pair impedance using wave port excitations in driven terminal mode. But i faced a problem while tried to calculate same diff pair impedance using lumped ports excitations in driven terminal mode.
HFSS help says that it is possible to define diff pair using multiple lumped ports, and that is true - HFSS doesn't show any error or warning messages during analysis, but as a result i always get 100 Ohm diff impedance at any frequency. Important notes here that impedance normalization is off and terminals "matched" checkboxes are checked. Moreover no one of "normalization" settings are set to 100 Ohm! I have tried different settings combination - all don't work for me. Could anybody help me with that issue?
My project is in attachment, feel free to use it in your projects, if, ofcourse, you will make it work ;-)
HFSS EDT 2017.2.0
--- Updated ---
And this is how the result looks like. Strange, isn't it?
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