MrSlowhand
Newbie level 3
Hi all!
I'm a newbie in RF simulation, and I've been asked to design an antenna with 10 dBi gain at 870 Mhz for my undegraduate degree thesis, with CST.
However, I've found nothing but this recent paper which proposes a reader antenna with a maximum gain of 8.9 dBi at 915 Mhz.
Here it is:View attachment 05482113.pdf
I have to say that the authors do not specify thicknesses of some materials,
so I had to choose these ones by myself.
When I simulate the antenna, s11 does not drop to -20dB (about...), but remains almost near to 0 dBi (Far fields are even worse).
I was wondering what can be wrong with this design of mine.
If you want, I can send you my project to see if there are mistakes.
Best regards
I'm a newbie in RF simulation, and I've been asked to design an antenna with 10 dBi gain at 870 Mhz for my undegraduate degree thesis, with CST.
However, I've found nothing but this recent paper which proposes a reader antenna with a maximum gain of 8.9 dBi at 915 Mhz.
Here it is:View attachment 05482113.pdf
I have to say that the authors do not specify thicknesses of some materials,
so I had to choose these ones by myself.
When I simulate the antenna, s11 does not drop to -20dB (about...), but remains almost near to 0 dBi (Far fields are even worse).
I was wondering what can be wrong with this design of mine.
If you want, I can send you my project to see if there are mistakes.
Best regards