As someone who does both measuring and modeling.. Modeling is what gives you insight into things like sensitivity and variability. Measuring, to some extent, confirms what you modeled, or, that you’ve got something wrong in the model.
Modeling also can give you a much wider tradespace - building a new model is essentially free.
I build a fair number of antennas for various uses - Here’s an example: I’ve got a spacecraft that has two dipoles about 5 meters long, crossed at right angles. Easy enough to model, or build a mockup and measure (a bit harder, but doable). But I might have a question about “if there’s an angular misalignment of 10cm at the tip, does that make a difference in my measurement”. Easy question to answer with modeling, very, very difficult with measurement (time consuming, if nothing else). Consider someone putting up a LPDA with 10 elements - modeling can tell you what happens to the performance if the elements are skewed by 10 degrees pretty quickly. Testing would be a pain.
toggle quoted message
Show quoted text
On Apr 9, 2025, at 10:05, Team-SIM SIM-Mode via groups.io <sim31_team@...> wrote:
?Hi Maynard
Electrical modelisation is appreciated as a first approche of computing in the history, after what we procede with computers simulation last twenty years, in present time there is no better then a good measurement at the desired frequency, its become possible with the cheap devices as nanovna , just need some good method and practice , lt should defeat all mathematical modelisations or PC simulations.
73s Nizar
