Probe Fed Patch Antenna : S-Parameters improvement using HFSS. HELP needed

[rafa040]

i have made this probe feed patch antenna for 2.85Ghz and it iz working fine but the s-parameter is too bad.kindly tell me the way to improve the s-parameter for it ..thnks alot.
antenna snaps are attached with it.

 

[hamidrezakarami]

you can say the basic parameter to design in HFSS for me?
I can simulate it for you and say the results.
but I don not have any idea about your problem. are you professional in working with HFSS?

HR Karami

 

[rafa040]

sir , i am student of engineering .
and the design parameter(hfss) for my probe feed patch antenna are
f=2.85ghz
substrate=(FR4) with height=.15cm
Air(Vaccume) box between substrate and ground plane with height=.5cm
probe material=PEC with diameter =.127cm
coax meterial=teflon with diameter=.41cm
if you want me to attach my hfss file kindly let me know please..
THANKS ...

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this is what i get at the ouput when i run my hfss antenna ..you can see that its s-parameter is not good ...kindly let me know how to improve it please..

 

[hamidrezakarami]

I did not access to the HFSS on my system and I had to simulate and design a new antenna for you. you did not give me complete information for simulation. for example what is the location feed?
however to help you I simulate a patch antenna with probe feed and the other properties as follows,
L = 46.8
W = 33.2
h = 2.87
er = 2.2

wire radius using in feed = 0.65
GND_L = 80
GND_W = 50

all boundaries set to open add space
delta s = 0.01

the scattering parameter is attached to this reply.



HR Karami

 

[rafa040]

dear sir!
thanks so much for your simulation for meee. my requirements are as mentioned above caz have to practically implement it ..
thanks alot but if i can get ur ID so that i could mail you my HFSS file i wud be very greatful if you culd help mee wid that caz ive to design antenna for

F=2.85Ghz.

- - - Updated - - -

dear sir!
thanks so much for your simulation for meee. my requirements are as mentioned above caz have to practically implement it ..
thanks alot but if i can get ur ID so that i could mail you my HFSS file i wud be very greatful if you culd help mee wid that caz ive to design antenna for

F=2.85Ghz.

 

[pusulurikiran]

Hai every one
i am an engineering student i want to design a l probe feed patch antenna can any one help me

plzzzzzzzz..thanks in advance

 

[hamidrezakarami]

To start you can read this file.
I think this is very good for starting.

 

[khaled.ayman]

I'd advise you to check out this post as well, this is where I got my help good luck!

https://www.edaboard.com/threads/166237/