This module will cover basic antenna theory, including directional and
omnidirectional antenna selection. In general, high-gain antennas direct energy
more narrowly and precisely. Low gain antennas direct energy in a broader,
wider pattern. Everything about antenna choice involves a tradeoff. If maximum
range is desired, coverage must be traded. With a directional antenna, the same
amount of power reaches the antenna, but the antenna design can reflect and
direct the RF energy in tighter and stronger waves, or wider and less intense
waves, just as with a flashlight.
After discussing antenna theory and
types of antennas, cables, connectors, and accessories for antennas will be
discussed. With cable, the shorter the length, the higher the quality of
coverage. Additionally, important antenna design considerations, such as link
engineering, path planning, and installation are also discussed.