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Hi Taik,
Lets suppose we have got a 2-port network described with S-parameters:
eq. 1: b2=s22*a2 + s21*a1
eq. 2: b1=s12*a2 + s11*a1
then we also suppose that the second port is terminated to R, and we denote the reference port impedances by R0. So we may...
Dear Taik,
I suppose you have not got the meaning of S-parameters completely. When you terminate the output port of s 2-port network with a load you will end with a 1-port network. If the load does not changes the 2-port parametrs (I mean it does not load your previous network) you will be able...
Rather vague question!
by the way when you calculate S11 on a waveguide port you mean the ratio of the outgoing power to the incomming power at that port in a certain mode.
If you use an incident (lets suppose) plane wave on an structure and want to know the ratio of the reflected plane wave...
Hi
When defining more than one mode for a port (say n modes), HFSS produces a nxn matrix for S parameters. how should I obtain the actual measured S11 parameter?
clear?
from cadfeko to editfeko
Dear KhangKhang
I think the EDITFEKO cards are the best way to model coax ports. You may combine the capabilities of CADFEKO with EDITFEKO. just build the necessary parts in CADFEKO, import it into EDITFEKO and then add the remaining parts that are more convinient in...
".sti" should be some kind of temp file that HFSS creates. check if you have not fallen into some "OS permission to write on disk" difficulties.
It won't take long to upload the design file.
remember upload just the design file and not the result folder.
shaped reflector design
As e-books are abandoned here, please check the following request of mine at "EDA E-Book, Articles & Specification Requests" Forum:
other detailed documents other than the requested book on shaped reflector design is also welcomed!
Best wishes,
Eastern
trl calibration tutorial
here "reflection" means a one-port device with high reflection (ex. ro>0.95) and known phase of reflection. the reflection phase should be known with a (lambda/4=pi/2) accuracy.
the reason should will be clear if you draw the NA error modeling flow diagram (see...
if you want to create cicular pol. with a patch antenna see https://en.wikipedia.org/wiki/Patch_antenna
there you will see a circular patch with two slots on it. this will change the current distribution on the patch and gives you circular pol.
hi everybody
I need the following paper. thanks in advance.
A. Chabory, J. Sokoloff, S. Bolioli, and P. F. Combes, “Computation of electromagnetic scattering by multilayer dielectric objects using Gaussian beam based techniques,” C. R. Physique, 2005.
interview question
in a an RF field test you will have your own Tx and Rx. So the other transmitters around are interferers. It is very important to do proper filtering in our Rx. moreover the IP3 point of our receiver is very important. consider a strong out-band interference that has been...
Mesher Failure
the antenna seems too much small regarding the wavelengh at 10MHZ namely 30 meters. Is it really gona work?? (Antenna aperture)/lamda^2=1.8e-5
I think you should seed the mesh on the antenna with a very small fraction of wavelength
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