July 4, 2020 at 3:03 amamhegazySubscriber
I'm trying to simulate a dielectric lens with a radius of around 30mm at 77GHz band, i'm using HFSS full wave simulator with a radiation box to get the farfield pattern. This simulation takes too much time and computing resources. Is there a more efficient hfss solver like SBR+ that can help make the simulation faster and less resource consuming?
Note:I tried using SBR+ but it says that the lens structure should be a conductor not dielectric.
July 5, 2020 at 11:50 pmAndyJPSubscriber
" This simulation takes too much time and computing resources" how much? More than 15 minutes for central (meshing) frequecy? Incorrect setup. Or there are some advanced microcomponents on the board which we do not see on the screenshot. Try simulating it in uniform box of lens dielectric around the board, instead of air to see how much resources your antenna takes.
July 6, 2020 at 2:39 amamhegazySubscriber
It takes around 4 hours to finish. Its a very simple 3 element series fed antenna and it doesn't take too much time alone(few minutes).
July 6, 2020 at 6:21 amAndyJPSubscriber
if a dielectric is configured wrongly, it will force excessive
meshing not only inside, but around the object. you can save time and
RAM considerably by using flat striplines with layered impedance.
Boolean-unite contacting and overlapping objects of the same material.
Do not let pointless gaps between objects.
One small object, like a gap between surfaces can force excessive meshing around, which kills the performance.
is in the case when your PC is working smoothly. I have interesting
experiences, which I would separate into 2 cases: 1)failing CPU cooler
results in degraded performance and stalls due to CPU throttling and
protective sleep. Same happens with laptops. Try not using laptops in
simulation. Even branded laptop workstations are not for simulation! 2)
Failing ECC memory may not fail owing to ECC corrections, but may reduce
performance significantly. It starts failing when simulating with large
amounts of RAM frequently accessed. Check IPMI/BIOS logs. Use memory
stress tests like TestMem5.
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