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[SOLVED] reduction of back lobe in patch antenna array

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nitish77

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radiation.png 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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nitish77 said:
View attachment 84473 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.
Click to expand...


Why don't you try to use a reflector?
 

nitish77 said:
which type of reflector to be used and how to implement it in hfss?
Is it a simpler method?
Click to expand...

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.
 

jiripolivka said:
Why don't you try to use a reflector?
Click to expand...

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.
 

jiripolivka said:
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.
Click to expand...

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