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you can refer to help this software. also you can draw and simulate fractal antenna in ie3d software. this software can analysis this structure with more fast .
Re: generate conformal
There are two ways you can do it. (1) You can build a circular one. Then, you can use ADV EDIT->SCALE DIMENSIONS to scale if for elliptical shape. The disadvantage of this way is that the line width may also be scaled. (2). Use any software to create the vertices for the...
Assume you have a polygon on z = 10 and you want to build a hole (any shape) on it. Please create the shape on a fictitious layer. For example, you can create it at z = 15 where z = 15 does not have any other polygons. Select the polygons on z = 15 and use ADV EDIT->BUILD HOLES AND VIAS FROM...
IE3D has a few very powerful boolean operations for it. Please draw your rectangular patch on one layer. Draw the double-U shapes (or any other shapes) on another layer. Please select the double-U shapes and select ADV EDIT->BUILD HOLES AND VIAS FROM SELECTED POLYGONS. Check the laye where the...
Please build your shape_to_have_a_slot_cut_on_it on z1. Build the shape_of_slot on z2 (an arbitrary layer). If the shape_of_slot contains multiple connected polygons, you should select them and select ADV EDIT->MERGE SELECTED POLYGONS to merge them for better result (even it is not necessary)...
You can define a goal as mag(S11)< - 10.5 dB over a bandwidth you are interested. You can define multiple such goals with each one in each band. Certainly, you will need to make sure your tuning mechanism should be able to achieve it.
The input impedance of the antenna is not uniquely defined when your port to ground (or reference) distance is more than 10% of a wavelength. In some sense, it is similar to solving the input impedance of a dipole antenna when the gap between the 2 arms is very big. You can not get consistent...
Re: coaxial structure
You just define the whole space with Er = 2.2. For example No.0 substrate: Ztop = 0.0, Er = 1.0, Sigma = 0, adn No.1 susbtrate: ztop = 1e+15, Er=1.0, Sigma = 0.0.
Low efficiency may be related to the thickness of the trace is too small. If the VSWR is not good, it might be that your normalization impedance is 50-ohms. Most wide band antennas may not work at 50-ohms.
You should use IE3D for it. IE3D has built-in optimizer and the FastEM Design Kit for real-time EM tuning. You should choose your structure and parameterize the parts you want to optimize or tune. Then, you can let IE3D to optimize it for you.
Please simulate a 2-port short uniform TLN. MODUA will be displaying the s-parameters after simulation. Please select PROCESS->FIND TRANSMISSION LINE PARAMETERS and provide the physical length. Then, you will have a table of the Ereff vs. Frequency.
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