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(thank u)*3 and (sorry)*3 ....:)
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i test EBG with (HFSS) , i will excit one cellul by plane wave and i found that coefficient phase=0 in f=5.8GHz!
so please explain me how do to obtain (S11<-10dB) for f=5.8HGz , when ebg structure will in below the patch antenna as indicated...
i work with MOMENTUM ADS :)
when i use patch antenna surounded by EBG , there is no problem , i obtain good adaptation in good frequency (s11<-10dB in fr=5.8GHz)...!
but when i want use this :
https://obrazki.elektroda.pl/94_1348076020.jpg
so how do i ? thank you very much!
my patch antenna is : fr=5.8GHz ; h=2mm ; ep_r=10.2
my EBG cellul is (3mmx3mm) , radius of via is 0.25mm , i want to use this EBG as AMC (artificial magnetic conductor) , so EBG will be ground plan of my patch antenna
how do it ?
because when i use : patch antenna with (ep_r=10.2 and h=2mm)...
hi!
please , i want to use patch antenna above (AMC) artificial magnetic conductor!
when i simulate patch antenna only above ground plan , i use heigth of substrate (h1)
but when i want use AMC as ground plane , i don't know how choose (h, ep_r) of my substrate for obteining same frequency...
please , i want to design this in hfss !
https://obrazki.elektroda.pl/12_1342172758.jpg
I've drawn this figure, and I'm stuck
https://obrazki.elektroda.pl/79_1342173124.jpg
I have a problem, how to insert the incident wave? and how to do the boundary conditions on the walls of the box?
thnx
hi!
I try to use HFSS for the phase diagram and dispersion of a cell mushroom like EBG , I am a beginner, but Imake an effort! Please, is there someone who can put the steps here clearly for the purpose, or a pdf that explains clearly and in detail how to get this diagram? I need this, so I...
ah!thank you volker ! also thank you ferdows!
please tell me
dimension of ground plane , in general , how choose the size of ground plane ? and how this finite ground influence in parameter s11 so in resonate frequency!
thank you volker , thank you all !
so i have right ! gain increase with finite ground plane !
I thought if we put a finite ground plan , it'll give back lobe therefore reduction of the gain,but i see that give inverse , gain is increased!!!
physically how we explain this!?
thank you very much!
thank you all !
let me tell you that at the beginning I worked with the antenna(ep_r=4.7 , h=1.6 mm ) and I want to see the effect of increasing the height of the substrate on the gain substrate on the gain , so i increase heigth for h=8mm!
so
when i work with infinite ground plane...
thank you ferdows!
I am familiar with ads , and I do not know how to work with HFSS or cst!
please why you say :(its momentum is not very good) , since I can replace the infinite ground plane by a finite plane!
hi.
in ads momentum , i simulate patch antenna that resonate at 2.45GHz , with (length=21.9 mm , width=36.26mm,height=8mm);
i use (h=8mm) just to see the effect of increasing the height of the substrate , effectiveley i get 2.45GHz!
but
note that ads work with an infinite ground plane , i get...
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