isotropic radiator मीनिंग इन हिंदी

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That ratio would be equal to G if the reference antenna were an isotropic radiator.
It radiates uniformly in all directions from a point source sometimes called an isotropic radiator.
"Incoherent " isotropic radiators are possible and do not violate Maxwell's equations.
In ideal free space, the electric field strength produced by a transmitter with isotropic radiator is readily calculated.
Acoustic isotropic radiators are possible because sound waves in a gas or liquid are longitudinal waves and not transverse waves.
The reference antenna is usually the theoretical perfect isotropic radiator, which radiates uniformly in all directions and hence has a directivity of 1.
For non-isotropic radiators such as parabolic antennas, headlights, and lasers, the effective origin is located far behind the beam aperture.
"' Isotropic "': An isotropic antenna ( isotropic radiator ) is a " hypothetical " antenna that radiates equal signal power in all directions.
In common usage " omnidirectional " usually refers to all horizontal directions, typically with reduced performance in the direction of the sky or the ground ( a truly isotropic radiator is not even possible ).
It measures the power density the antenna radiates in the direction of its strongest emission, versus the power density radiated by an ideal isotropic radiator ( which emits uniformly in all directions ) radiating the same total power.