Coaxial Feed Microstrip antenna

ssheikmd said:

Thanks for spent time to read my post.. Do u have idea about HFSS

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Ankesh Garg said:

ssheikmd said:

Thanks for spent time to read my post.. Do u have idea about HFSS

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Hi,
You can provide a coaxial feed to a microstrip antenna in HFSS by following way:
1. Determine which cable you are going to use lets say RG316.
2. Get its inner and outer diameter and the dielectric values.
3. model the coaxial cable in a seperate HFSS project. take the length to be say 5mm.
4. at both ends apply circular sheets, use lumped port or wave port at both ends and apply line of integration between the inner and outer conductors.
5. simulate for a very wide frequency range and check for return loss if it is well below -40 or -50 dB then its ok to use otherwise change the dimensions of outer conductor or inner .to get a decent return loss. idea is to use a caxial cable characteristic impedance calculators and then then play around those values.

once you get a good cable response use same dimensions in you main project by uniting the inner conductor to the microstrip feed and uniting the ground plane to outer of coaxial cable and run the simulation.

Hope this helps

-Ankesh

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shahid78 said:

hi there

i can give you any advice on CST MWS.

unfortunately i havent used HFSS that much

regards

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