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Thanks, I have found C0409J5003AHF from Anaren, the price is exellent, the only thing I'm not sure is how is the Amplitude balance performance between 200 to 400 and whether it exceeds 4 dB or not!
Hi all,
I'm looking for a low power handling and low price 90 degree hybrid coupler part which covers 200 MHz to 850 MHz. Anybody has a solution?
Best Regards,
Hadi
My point is that since the feed is very close to the sub-reflector (near field region), we have to take their mutual interactions into consideration rather than just exposing the sub-reflector with the feeds radiation pattern in simulation. Now what is the effect of this interaction, and how...
Hi,
What happens if the sub-relfector is in the near of antenna's main feed in a dual-reflector antennas? As feeds are normally electrically large, their farfield distance is quite large! and What is the solution?
Cheers,
Hadi
Defining non-rectangular waveports in FEKO
Hi
It seems that FEKO is only able to model wave guide ports which are rectangular.Is there anyway to model other configurations such as a kind of parallel plate modes? My structure is composed of two pair of finite parallel plates which are 90deg...
Hi,
I have a question regarding the Bandwidth limitation of reflector antennas. I want to design a reflector antenna from 2 to 5 GHz which is quite wide bandwidth. I think the dish can be designed for such a bandwidth, but can I also design a normal feed? Which type of reflector antenna is...
It is solved,
Actually it is just enough to change your boundary setting from Et=0 (PEC) to open add space or open. In fact, you case was quite vague, because you ports are that boundary and touching the PEC you defined at the boundary. Now you can solve it even with 10 meshes per line, just...
Yes, Actually the physical structure of what you have connected to your wave port should be "homogeneous for at least 3 mesh cells". This is becasue you use a spline profile to create a port and the distance between two sides of your slot is changing continuously. I suggest connecting another...
I'm still pretty sure about it! :| I suggest either to increase it more (30 line i.e) or to widen the port's gap a bit more. I looks really small. :wink:
This photo means that you meshes should be even finer in order to recognize the port you have defined. For the moment the gap you have put for the port is seen like the junction between two metals. for instance put the mesh density 20 "lines per wavelength".
This is a classic problem that all classic antenna text books (Balanis, Volakis, Stutzman , Kraus ...) cover, as well as most of the software such as HFSS, CST, FEKO, WIPLD, IE3D ....
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