itaifrenkel said:Hi all,
There is a comprehensive whitepaper in Ansoft's HFSS Online Technical Support site. Look for "How to model on-PCB structures with HFSS". In appendix D you will find everything you need to know about ports.
Itai
sonubal said:I think Wave port and Lumped port are almost same.The only difference is that where they can be used..For example in case of dipole the port has to be interior so we use lumped port.
Terminal lines just give u the reference direction of the field or voltage..Aroow head is +ve and the tail is -ve.
Sonu
loucy said:With lump port=> the excitation is applied at a point/cell, as a voltage or current.
With wave-port=> the excitation is so-called eigen-wave, such as the quasi-tem wave supported by a microstrip line. It applies over a cross-sectional area.
The subject of lumped vs wave port is actually complicated. people continue to study related matters, (e.g. arguing what is the "characteristic impedance").
Reading about the various de-embedding scheme should help with the understanding....
loucy said:regarding xbtxbt's projects (upstairs):
1. the background is perfect conductor by default, so right now the model is just a cavity filled with the RT/duroid. Obviously you want to simulate something on microstrip, so you need to draw a box or sphere surrounding all the objects in the existing project, assign it as air, and put radiation boundary on its surface.
2. for wave ports, your Rectangle1 and Rectangle2 should be assigned as perfect conductor, so that the wave is launched toward their outward normal, not both direcitons.
3. couldn't find your definition of lumped ports. the two projects uploaded look the same.
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