In my experience CST with its user friendly interface and powerful 3D modeler is very efficient tool for all electromagnetic problems. Especially transient solver offers possibility to solve a huge variety of tasks even if you have to treat for example cavity problems. I’m using this for antenna arrays designs and I formed my opinion comparing simulated results with measured ones obtaining almost always quite good agreement especially regarding frequency behavior (there wasn’t any significant frequency shift with respect to the expected one). Other good feature is that you can use GPU and with moderate cost to turn an ordinary PC into a powerful workstation capable to solve huge size problems in terms of wavelength.

https://www.researchgate.net/post/What_are_the_best_software_used_for_antenna_design_and_simulation

as far as i`ve experienced, CST is best suite for your purpose, besides it has some template examples about planar antenna and also arrays.

In my experience CST with its user friendly interface and powerful 3D modeler is very efficient tool for all electromagnetic problems. Especially transient solver offers possibility to solve a huge variety of tasks even if you have to treat for example cavity problems. I’m using this for antenna arrays designs and I formed my opinion comparing simulated results with measured ones obtaining almost always quite good agreement especially regarding frequency behavior (there wasn’t any significant frequency shift with respect to the expected one). Other good feature is that you can use GPU and with moderate cost to turn an ordinary PC into a powerful workstation capable to solve huge size problems in terms of wavelength.

CST all the way!!

ADS is best for EMI/EMC and RF Design not for antenna (it has just a MOM solver)

CST (FIT, MOM and some hybrid solvers)

I have been using CST for the past 4 years. It has one of the most comprehensive solution for all antenna design. ADS and NEC are suitable only for few basic problems. in addition to that, CST conducts many workshops and seminars in most countries. You can share your research with other scholars and get the latest input from RF industries. I agree with Mr.S Dragas. Personally, most of my simulation results turns out to me in close agreement with the experimental one.

i think CST is better option for most of general design. TQ

Another important EM software is HFSS. The accuracy in planar antennas arrays is very good. In my experience CST and HFSS are much better than ADS.

i have used also HFSS and i made Planar UWB antenna and fabricated it and there was very good agreement between the simulations and measurment results.