Changes

/* Simulating the Patch Antenna on the Vehicle Roof */
The figure below shows the 3D far-field radiation pattern of the installed patch antenna on the vehicle roof. For this simulation, the far-field angular resolution was set to 2.5° along both azimuth and elevation directions.
 
As you can see from the figure, the value of the directivity has not changed significantly from the previous case due to the presence of the horn feed. However, the perfect circular symmetry of the pattern in the case of the short dipole feed is now all but gone.
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The figures below show the 2D polar radiation patterns of the parabolic reflector with the pyramidal horn feed roof-mounted patch antenna in the principal E YZ and H ZX planes.Comparing these graphs with those of the isolated patch antenna in the previous section reveals the impact of the mounting platform on the radiation characteristics of the installed antenna.
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Simulation Information:
 
Mesh size: 220 million cells
 
Farfield Resolution: 2.5 degrees
 
Simulation Time: 4 hours, 45 minutes
 
Typical Performance : 320 MCells/s
 
Power Threshold: -40 dB
 
Thread Factor: 8
 
 
[[Image:Roof field.png|thumb|left|400px|]]
 
 
[[Image:Roof pattern.png|thumb|left|400px|]]
 
 
[[Image:Roof yz cut.png|thumb|left|400px|]]
 
[[Image:Roof zx cut.png|thumb|left|400px|]]
 
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=Patch on Hood=
Kazem Sabet
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