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Shorted hole in SAP (Shorted Annular Patch) using HFSS

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Cridav.martin

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Hi,

can anyone please help me designing a microstrip patch antenna in HFSS.

I have troubles creating the shorted ring, how should i do so that the patch and the ground are shorted using a hole with a huge radius?

thank you
 

moh.haroun

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you should make a cylinder that is equl to the distance between the ground and patch in length.subtract the cylinder from the patch, ground and substrate. Then you should make an object from surface . In this way you will have a surface hollow cylinder. Use thicken sheet to add thickness to the metallic via.
Regards
 

Cridav.martin

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what kind of boundary should I apply?, I´ve substracted the cylinder from all the layers, after that I selected the hollow cylinder with "select surface", after that "modeler->surface->create object from face", and finally I made that face with "Perfect E Boundary", is that correct? or should I give it another property so that it acts as a shorted hole like made it "pec "?

Captura.PNG

thank u so much
 

moh.haroun

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yes this is enough. you may also add thickness to the cylinder using thicken sheet
 

Cridav.martin

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but, if i decided to add thickness, what material should i use?
 

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