Black Box LW0050A Manual page 123

APPENDIX D: Radio Signal Propagation
Side Lobes
The radiation lobes in any direction other than that of the main lobe.
Omnidirectional Antenna
An antenna that radiates and receives equally in all directions in azimuth. The
following diagram shows the radiation pattern of an omnidirectional antenna with
its side lobes in polar form.
Side lobe
Main lobe
Figure D-3. Side View.
Figure D-4. Top View.
Directional Antenna
An antenna that radiates and receives most of the signal power in one direction.
The following diagram shows the radiation pattern of a directional antenna with its
side lobes in polar form:
Main lobe
Side lobe
Figure D-5. Radiation Pattern of Directional Antenna.
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