Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Hi everyone,
I need your help. I'm a FEKO user.
How can I relate mathematically surface charge to surface current?
My question is because in FEKO unit measure of surface charge is [Coulomb/m^2] (that is right to me) and unit measure of surface current is [A/m]...and it is not what I expect to...
Hi edge_tv,
I think what you said was right.
But in my opinion the VTh voltage tolerance can be taken into account using, for example, Montecarlo Simulation method in spice using the information you have found inside datasheet.
The problem still remains the physical dimension W and L because I...
Hi,
generally EMC logperiodic antenna has a bandwith starting from 200MHz up to 2000 MHz (or, in some cases 4000 MHz).
You can find more information on website's vendor like Schwarzbeck.
Regarding the design I personally use a full wave MoM (Method of Momenth) simulator.
Re: EMC enquiries
Hi Roronoa,
the subject is very wide and your questions are the bases of Electromagnetic Compatibility.
I want saggest you an interesting starting book:
Clayton R. Paul, Introduction to electromagnetic compatibility, Wiley-Interscience, ISBN 9780471549277
Zizu,
I'm sure that W/L ratio influences the simulation results because when I tried to do this on model (passing W and L as parameters) the results changed.
In any case I don't want follow the "try and error criteria" i.e.:
1) change W and L,
2) obtain the simulation results,
3) compare...
Zizu,
I don't want to build a new model.
I want only apply the real W/L ratio to my simulation in the ZETEX model and I don't know how can i do that.
In my previous post I said that "some differences" from measured and simulation appear but I don't see a completely different results so I...
Hi zizu,
I have to design a circuit starting fron simulation.
Due to the fact that I see some differences from simulation and measure I want to push some inside in the model I have used.
You know that mathematica equations of MOS depends on W/L ratio. PSpice implements that equations and, by...
Hi zizu,
thanks for reply.
Why you made a differenze fron discrete anda non discrete components?
The MOS part is always inside the package and the mathematical MOS equations are still the same.
Is it right?
Hi everyone,
I'm trying to simulate a simple electric circuit using spice with a common MOS insite (i.e. ZVN4424Z - SOT89 N-CHANNEL ENHANCEMENT MODE VERTICAL DMOS FET).
The supplier Zetex (https://www.diodes.com/) give as the MOS spice model.
The question is:
I'm quite sure (see in the follow)...
Hi everyone,
I'm trying to simulate a simple electric circuit using spice with a common MOS insite (i.e. ZVN4424Z - SOT89 N-CHANNEL ENHANCEMENT MODE VERTICAL DMOS FET).
The supplier Zetex (https://www.diodes.com/) give as the MOS spice model.
The question is:
I'm quite sure (see in the follow)...
Hi,
you are right: in my opinion in your case the cable is an active part of the antenna.
In other words the "antenna" is formed by the radiating structure (we design with electromagnetic simulator) and the coaxial cable (that is, in principle, an umpredictable structure).
There are a lot of...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
