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.
You can apply the same "move" command to the 2D port that you applied to the the coil. This way the port will move with the coil, like you intend. Just make sure the move command is defined with the same variable used in your sweep.
You are completely correct, Characteristic mode analysis is exactly the sort of solver I was looking for! I had never heard of this method before, I'm very excited to give it a spin.
Leaving this here for anyone who finds this thread looking for further reading...
The HFSS eigenmode analysis requires 3D space to solve for the fields. Is it possible to find the modes of a dipole in free space? Here the modes are really more of current densities than fields. Mathematically, this seems to be the same to me, but I don't think it can be implemented in the HFSS...
Thanks, I do have a copy of Jackson. I agree, it's not very accessible. I suppose the material I'm looking for is a little closer to Electromechanics or maybe even Magnetohydrodynamics, as opposed to a classical electromagnetism text.
I'm working on problems involving moving magnetized or polarized material and would like a text book more specialized for Electrodynamics than all my antennas texts. One ideal example I found was from the MIT open courses "Continuum Electromechanics" by Melcher. But I was hoping to find...
I would like to validate some results I have of the scattering of a sphere using Mie Theory in HFSS. My sphere has a dielectric constant E1, and is suspended in a media of dielectric constant E2.
When I draw a large region around my sphere with the media dielectric E2, the solver starts to mesh...
I believe the expressions for f0 of a 2D cavity are the same as a 3D cavity, but without the third "depth" term under the square root (so l = 0): https://en.wikipedia.org/wiki/Microwave_cavity#Rectangular_cavity
This should give you f0 for all modes. For the FDTD case, it may be true that one...
I am working on a scattering problem in HFSS and would like to plot the Reflectance vs. Frequency for my object. My object is on the order of a few um and I'd like to plot reflectance vs. wavelength for the visible light spectrum.
But I'm not clear how to calculate reflectance in the optical...
So to clarify, you found your resonant frequency using an interpolating frequency sweep, but when you switched you solution frequency to that resonant frequency, you did not simulate the same effects? Or did your simulation just never converge?
An obvious issue would be if you have any...
Yes that looks like what I would expect, not that I am familiar with the E-rotator cavity scheme you are proposing. You might have tried this, but I would recommend doing a finer frequency sweep around one of those known peaks, for example sweep centered about marker m2 in the third image at...
In the past I have used Dr. Kajfez's work to help me with Q factor measurements: **broken link removed**
He also has a book and some handy MATLAB code.
So it sounds like you have a high Q cavity, but you measure a low loaded Q and shifted resonant frequency because the placement of your...
Q factor of what, exactly? If it's something like a cavity resonator, then you can simulate your cavity with the excitation method and measure Q from the frequency response. That is loaded, or external Q. The eigenmode solution should be unloaded Q, or Q0. This ratio could give you coupling. I...
you want to set it up something like this I believe
Also make sure you tune your system with the shielding in the way, it will alter your coil L and Q.
Create some output variables like the following:
L1 = im(Z(1,1))/(2*pi*freq)
L2 = im(Z(2,1))/(2*pi*freq)
M12 = im(Z(2,1))/(2*pi*freq)
k = M12/sqrt(L1*L2)
You should be able to just copy and paste those lines into HFSS results window actually. Assuming port 1 is attached to L1 and port 2 is...
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.
