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hi all, sorry to bump an old topic but i still haven't figured out the whole solution for the simulation with the pin diode. so, i configured it as an RLC serial component with the values as posted above. the problem that i'm having is that the software behaves as though the diode isn't even...
i was very busy this whole week so i couldn't answer until now. i have tryed what you suggested and set the values to 0.03, then 0.1, 0.5, 0.8 and the warning message was still there for all the set values, only the simulation time was shorter as i set the larger values. for the first two values...
hi thylacine, thanx for your answer, i didn't have time to test your solution until today. so, i've tryed setting the simulation as shown on your screenshot and putting those three values up to 50 with no change in the warning message. also i have tryed setting the local mesh for only the patch...
hi guys, i've found and discussed with my mentor some values for the pin diode and decided to use these: for forward bias - R=3.5 ohm, L=0.45 nH; for reverse bias - R=3 kohm, L=0.45 nH and C=0.08 pF.
now, when i enter this in my model and run the simulation (in forward bias mode) i get the...
yes, it is a bit weird, but the again it is logical, because otherwise it would be impossible to simulate combinations other then R-L-C. btw, i've found the equivalent schemes for the pin diode so i will use those. i'll implement it in mws like two lumped elements in a series in which the first...
now you've got me confused.
i wrote RLC series because it's the only option in mws, it has RLC serial, RLC parallel and diode, there is no options for only R-L or only L-C, but this is from the mws help:
so, what am i missing here? can you tell me your solution to this problem? thanx
but, that's exactly what i did. in the first case i defined C with zero value and in the second the R is zero valued -because of cst i have to put some value. as explained in cst help, when a value of any component is zero it simply removes it. i was just checking if the combinations were right...
ok thanx. let me just see if i got this right (i obviouslly should have studied more about pin diodes, sorry):
ON state - RLC serial combination where R is a few ohms (e.g. 5), C = 0 and L is 0.1 -~ 2 nH?
OFF state - RLC parallel combination where R = 0? and L is 0.1 -~2 nH and C as suggested...
thx for the posts. @thylacine: indeed, my mentor did mention to use an RLC combination for the diode but i was unable to find those parameters at first, cause i was trying to find a straithforward solution. ok, i'll try to use your suggested values and see what the simulation will show, i also...
Re: PIN diode in CST MWS
hi, thanx for your answer, but can i ask for some more help..i can't find my way arround those parameters needed by cst mws. it needs: R-resistance, C-capacitance, Gs-conductivity when blocking, I0-reverse current and the datasheets of the diodes that i've found offer...
hi everyone
i'm need to simulate a PIN diode in CST Microwave studio with both OFF and ON states and it needs to be reprensated as a lumped element with RLC values. I need those values to be accurate so the PIN diode model would be more realistic and the simulation more precise. I'm modeling an...
this is excellent! just what i was looking for. now i have a theoretical background to support why the selected position was chosen. i calculated the result by hand now and got a good result..i'll try the formula in the simulation afternoon. thank you!
hi everyone. i am modeling an rectangular patch antenna in cst mws. i designed it following the tutorial in cst help. one thing that's bothering me is the position of the coaxial feed. i tryed to find the best point by sweeping that parameter, but my mentor insists that i find a suitable ration...
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