Glossary  >  Antenna Gain

Antenna Gain


Definition of Antenna Gain

Antenna gain, or absolute gain, is a measure of how well an antenna can receive and transmit signals. It indicates an antenna’s ability to focus energy in a specific direction, a feature that helps improve signal strength and quality.

Antenna gain is measured in decibels (dB), where the higher the gain, the better the performance of your signal booster. For example, if an antenna has a gain of 6 dB, it amplifies signal by six times compared to a basic antenna.

Gain can also be expressed in decibels with respect to an isotropic antenna (dBi). An isotropic antenna is an “ideal” antenna, evenly transmitting and receiving signals in all directions and exhibiting a gain of 0 dBi.

When no direction is specified, like with an omni-directional antenna, gain can be determined by using the direction of an antenna’s main lobe.

Example of Antenna Gain in a sentence:

"The benefits of high or low antenna gain depend on the specific use case since high antenna gain isn't always beneficial."

Synonyms: absolute gain

Related Terms for Antenna Gain: