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Hi Dear.
The first error indicates that there is a problem in port defining, which can include the following issues: overlapping with other materials, unite or subtract the port conductor, boundary definition.
The second error shows a problem in terms of analysis and memory, that is, because the...
In HFSS, you can see the passive and active S/Z-parameters. In a multi-port devices, when you ask for Z-parameters, e.g. Z11, HFSS will only enable port 1 and assume all other ports are matched. Thus you'll only see the passive Z-parameters. While for active Z-parameters, HFSS will give you the...
Re: help regarding siw in cst and hfss
Hi Dear.
you can followed these steps in HFSS to create a SIW structures.
1- draw a box for substrate
2- draw patch & ground plane(top and bottom of sub respectively)
3- draw cylinders around the patch for creating the SIW.
4- select top faces of all...
Hi.
I checked your design.
at first this warning appears:
[warning] Warning - Boundary 'Rad1' and Boundary 'PerfE1' overlap.
but no problem,with modify dimensions of air box this warning will be removed.
you have 2 resonant freq with acceptable shift and you should know that FR4 can not...
Hi.
what kind of antenna that you want to design?(flat or conformal)-(patch or other antennas)
what are the freq band?
please give me more information about your design.
thanks
Hi all friends.
I design WR90 excited with coax.but my resonance frequencies are not matched with theoretical freq.
what is the problem?
can you help me?
Thanks.
λ=c/f=30/2.5=12cm
λ/4=3cm
L=42+2×30=102mm
W=24+2×30=84mm
H=1.6+2×30=61.6mm
- - - Updated - - -
and your substrate is located in center of radiation box.
Hi.
you should be choosen the size of air box,lambda/4 larger than substrate or your design.
your design should be completely inside of air box.
Good Luck.
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