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When you talk about an adiabatic process, you mean that there is no exchange of energy between the mediums involved. When you have a really fast experiment, even interacting the different mediums you can consider that there is no change of energy, an adiabatic process. That’s the idea of a free...
Man, I already read pozar, colin, Balanis, Harrington... They don't explain this. The behavior of one input of a combiner feed alone is different than all them feed together.
Hi all, I hope you can help me!
I’m simulating power combiners and dividers at HFSS but I don’t know how to make the characterization of the component.
There is only one parameter I can understand, the S11 (reflexion) on the output port of the combiner or input port for division.
The...
waveguide matched termination
If I got your problem, the solution is simple. Make the excitation of a waveport and terminate it as Z ohms.
=> The excitation you must chose a terminal or integral line (it depends of your solution type) from the outer conductor to the inner conductor.
=> The...
HFSS excitation
The waveport only needs to be set to 50 Ohm, but if you don’t want any reflection it would be better to adjust the dimensions of your structure. Unless you are developing a impedance transformer...
current density
current density is the flux of charge by an area. It's also the ration of the current and the area that it goes by.
Being more rigorous you must think about impressed, conduction and displacement density currents.
I'm not sure If I undestood but...
You must create a substract, put your plates on it, complete with an air box and finaly define the ports and bondary conditions...
I hope it helps!
network analyzer s parameters
Hi all!
I´m simulating a component that I already have it built. The problem is that the scattering parameters I got on HFSS are different that those I got with the Network Analyzer. So here goes the questions!
• With kind of solution I´d would choose (driven...
When you go on the menu: HFSS=>Boundaries=>Vizualization, Reprioritize or Assign. So you can manage all the boundary conditions you want.
I wish it helps you!
Hi Yahia!
So the excitation is something like this? (picture attached)
It makes sense, the outer conductor being the ground, and the inner having the conduction current.
Do you know if its too much different about assigning a finite conducticity or a PEC for the outer conductor?
Thanks again...
Hello Friends!
I’m back here with another question... I need to make simulations (HFSS) with inputs and outputs for combiners and I’ having problems with the excitations.
How to define excitations on HFSS for a coaxial cable? A waveport needs a integration line, a incident wave is a planar...
Hi, do somebody have any material about how to design a resonant cavity combiner? I need to do it but everythig I find is related with the wilkinson's planar designs. I need it for a 476 MHz, spatial and quasi-optical combiner look not to be a good choice. Any hint about all this is well come...
rfic design tutorial
Arkamu,
there is a topic with this book wher tou can download. Other way is to send me an e-mail and I send it you!
thadeuarj@gmail.com
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