Table 1: Parameters of the proposed antenna in mm.

DesignAntenna elementDimensions/parameters (mm)

Layer 1Microstrip feedFeed width, = 0.386
Thickness,     
 Stub length,
SubstrateRT Duroid 5880 
Length,
Width,


Thickness,
GroundThickness,
Length,
Width,
Rectangular slotThickness,
Slot length,
Slot width,

Layer 2 SubstrateRT Duroid 5880
Thickness,
Patch
Length,    
 Width,   
Length,
Width,

Layer 3SubstrateFR4
Thickness,

tan
Cut in FR4Length,
Width,

Horn Horn dimensionsHorn length,
Horn width,
Waveguide length,
Waveguide width,
Thickness of metal horn,

Full structureTotal height4