Side lobes are normally the largest of the minor lobes.
3.
Minor lobes usually represent radiation in undesired directions, and they should be minimized.
4.
The level of minor lobes is usually expressed as a ratio of the power density in the lobe in question to that of the major lobe.
5.
The beam solid angle can be approximated for antennas with one narrow major lobe and very negligible minor lobes by simply multiplying the half-power beamwidths ( in radians ) in two perpendicular planes.
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