What is a "High Gain Directional Antenna"? The Most Authoritative Explanation.
What is a high gain antenna used for?
Techopedia explains High-Gain Antenna (HGA) High-gain antennas are focused antennas with narrow radio beams, allowing for precise targeting of radio signals. This antenna is used in space missions as well as in flat, open areas where the geography won'tdisrupt radio waves.What are high-gain omni-directional antennas?
High-gain omni-directional antennas achieve additional gain at the expense of elevation beam width. In static installations, the reduced beam-width is generally acceptable, but one needs to practice extreme caution when using them in mobile applications.What is a directional antenna?
Directional antennas provide increased performance over dipole antennas —or omnidirectional antennas in general—when greater concentration of radiation in a certain direction is desired. A high-gain antenna ( HGA) is a directional antenna with a focused, narrow radiowave beam width, permitting more precise targeting of the radio signals. [1]What is the gain of omni directional antennas over 360 O beam?
Since omni-directional antennas are required to provide signal over a 360 o beam in the azimuth plane, the additional gain can only be achieved by reducing the beam-width in the elevation plane. Looking at the above radiation patterns, it should be noted that a single dipole has a radiation pattern with a wide beam and gain of about 2.2dBi.
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