Will it be efficient to simulate an extremely UWB antenna from 4 to 70GHz using frequency domain solver instead of time domain solver and with stable results?
While it may be possible to do such a simulation in the frequency domain, it would probably not be the most efficient solver choice. For that very wide bandwidth, a lot of frequency samples are going to be required which will lengthen the simulation considerably – on the other hand in a transient analysis you would obtain broadband results in a single pass. Additionally, I am guessing that at 70 GHz the structure is going to be fairly electrically large which may cause problems in regards to the amount of memory required.
