antenna efficiency

antenna efficiency

[an′ten·ə i‚fish·ən·sē]
(electromagnetism)
The ratio of the amount of power radiated into space by an antenna to the total energy received by the antenna.
References in periodicals archive ?
Thus, antenna efficiency values can be maintained at a high level because they are less affected by the mutual coupling.
This means that a good impedance match can be designed directly into the antenna, and a high antenna efficiency can be achieved.
Cavendish SmarTuners enable capacitive aperture tuning, increasing antenna efficiency, enhancing reception, and saving power.
One of the challenges was to secure antenna efficiency, or the ratio of radiated power to input power, because seawater is much less conductive than metal.
In addition, the receiving antenna efficiency affects greatly the global efficiency of the rectenna.
The antenna efficiency was measured over whole operating bandwidth with 57 frequency points referring to a whip antenna.
However, matching networks may introduce additional losses and decrease the antenna efficiency [6].
Mounting multiple small antennas, in proximity from each other, in these devices deteriorates the antenna efficiency, thus requires special handling for the coupling between antennas' ports to improve isolation, increase channel capacity [1], and subsequently bit rate [2].
The antenna efficiency is defined as the ratio of the power radiated by the antenna to the power supplied to the antenna, and the gain is calculated assuming a perfect impedance matching condition.
Summary: TEHRAN (FNA)- A nanoantenna capable of providing the most antenna efficiency and radiative decay rate was designed by the Iranian researchers at Persian Gulf University, Bushehr.
Antenna efficiency is the power input of the antenna relative to the power that is actually transmitted.
The effect of an impedance mismatch is to reduce the overall antenna efficiency and thus gain.