[SOLVED] ADS patch antenna Simulation

[guytoub]

hello,

I simulated a patch antenna on ADS, the simulation converges well at the desired frequency. I made the antenna and I measured it, the resonance frequency is good but on the smith diagram, the impedance is no longer good.
I think my problem comes from adding the SMA connector, but how do I take it into account in my simulation?
the manufacturer does not provide the S parameters of the connector, only the Vswr which is 1.1 which for me is relatively good. How could I solve my problem please? Thank you for your help .

regards

 

[volker@muehlhaus]

Check if your ground connection is good, and does not introduce extra length (=series inductance). Also avoid gaps there.

Here is a bad example from another thread:

 

[guytoub]

Check if your ground connection is good, and does not introduce extra length (=series inductance). Also avoid gaps there.

Here is a bad example from another thread:
View attachment 167498

Thank you volker, it was that !