[SOLVED] reduction of back lobe in patch antenna array

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nitish77

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Hi,iam doing a project on rectangular patch antenna array(4 elements)

operating freqeuncy=2.4ghz
substrate is FR4 dielectic constant =4.4
height=1.5mm
lamda=60mm
distance between each patch=lamda/2=30mm
T-junction power divider is being used.

simulation is done in hfss

for 2 array,gain=5.5db and directivity=9db at 2.4ghz

I need some method to reduce the back lobe.
 
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Why don't you try to use a reflector?
 

which type of reflector to be used and how to implement it in hfss?
Is it a simpler method?

I do not use hfss or modeling. I prefer making and testing antennas. Try the same.

BTW, if you "work on antennas", I assume you have an idea how a reflector looks.
 

Why don't you try to use a reflector?

Reflector? The patch antenna does have some back side metalization anyway, so that's more or less the reflector. Maybe the back side metalization is too small.
 

I do not use hfss or modeling. I prefer making and testing antennas. Try the same.

BTW, if you "work on antennas", I assume you have an idea how a reflector looks.

what type of feed are u using? Ensure that the feed is impedance matched
 
increase the size of ground
 
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