Decibels relative to isotropic (dBi) is a unit of measurement that describes how much power an antenna transmits in a single direction when compared to an isotropic radiator, which transmits in all directions at once. The difference between the two is called antenna gain, which is represented as a numerical value in dBi. The acronym dBi is also written out as decibels relative to isotrope, decibels relative to isotropic radiator, decibels over isotropic, decibels over isotropic antenna, decibels relative to an isotropic reference antenna and other variations.
Motivation for adding term: While the CCO has an individual for Decibel Measurement Unit it does not include the term for the power measurement dBi.
Preferred term label: Decibel Isotropic Measurement Unit
Synonyms: dBi
Citation or source for definition: Sheldon, Robert. “Decibels Relative to Isotropic (dBi).” WhatIs. N.p., 23 Feb. 2023. Web. https://www.techtarget.com/whatis/definition/decibels-relative-to-isotropic-radiator-dBi.
Parent term: Measurement Unit of Power
Your contributor information: Donna Jones, donna.jones3@dodiis.mil
Decibels relative to isotropic (dBi) is a unit of measurement that describes how much power an antenna transmits in a single direction when compared to an isotropic radiator, which transmits in all directions at once. The difference between the two is called antenna gain, which is represented as a numerical value in dBi. The acronym dBi is also written out as decibels relative to isotrope, decibels relative to isotropic radiator, decibels over isotropic, decibels over isotropic antenna, decibels relative to an isotropic reference antenna and other variations.
Motivation for adding term: While the CCO has an individual for Decibel Measurement Unit it does not include the term for the power measurement dBi.
Preferred term label: Decibel Isotropic Measurement Unit
Synonyms: dBi
Citation or source for definition: Sheldon, Robert. “Decibels Relative to Isotropic (dBi).” WhatIs. N.p., 23 Feb. 2023. Web. https://www.techtarget.com/whatis/definition/decibels-relative-to-isotropic-radiator-dBi.
Parent term: Measurement Unit of Power
Your contributor information: Donna Jones, donna.jones3@dodiis.mil