dielectric resonator antenna fed by slot

I want to design a dielectric resonator antenna fed by slot. In order to achieve so, I add a reflector with reflector ground plane width and length equal 0, slot antenna as excitor, and a thick substrate. In this case, it looks like a dielectric resonator antenna upside down as shown in the attached figure. But when I want to analyse the S parameter, impedance and radiation pattern, no thing been analysed. I am wondering is it correct to design a slot fed dielectric resonator antenna in this way?

The following are the code I am using:

t = dielectric('name','GaAs','EpsilonR',12.94,'Thickness',0.1);
Antenna = slot('Length',0.1,'Width',0.01,'GroundPlaneLength',0.3,'GroundPlaneWidth',0.3);
rf = design(reflector,1.25e9);
rf = reflector('Exciter',Antenna,'Spacing',0.1,'Substrate',t);
rf.GroundPlaneLength = 0;
rf.GroundPlaneWidth = 0;
show(rf);
impedance(rf,linspace(1e9,1.5e9,101));

[Da Huang]

In antenna toolbox, we require the substrate dimension shall be larger than the top radiator. Your design currently is not supported in antenna toolbox.

Also, it is rare to see dielectric substrate smaller than the top radiator, especially for slot fed patch.

Answer 1

[Shashwat Bajpai]

I would suggest using the Antenna Designer app to make changes in the geometry of elements and visualize them without writing scripts for every change.

In the present case you can try making the dimensions of the substrate equal to the dimensions of the ground plane of the slot.

Hope this helps!

For help on how to use Antenna Designer refer the following link:

https://www.mathworks.com/help/antenna/gs/antenna-design-and-analysis-using-antenna-designer-app.html