Directivity vs. Directionality — What's the Difference?

In electromagnetics, directivity is a parameter of an antenna or optical system which measures the degree to which the radiation emitted is concentrated in a single direction. It is the ratio of the radiation intensity in a given direction from the antenna to the radiation intensity averaged over all directions.

Of or indicating direction

A measure of the performance of an antenna compared to an isotropic antenna; the ratio of the maximum value of radiation intensity to the average radiation intensity.

(Electronics) Capable of receiving or sending signals in one direction only.

(geology) Anisotropy in the propagation of earthquake waves in the direction of rupture.

Relating to guidance in effort, behavior, or thought

(rare) Directionality

A directional signal.

The property of a microphone or antenna of being more sensitive to sounds coming from one direction than from another.

(uncountable) The condition of being directional.

The property of a microphone or antenna of being more sensitive in one direction than in another

(countable) A measure of the extent to which something is directional.

The property of a microphone or antenna of being more sensitive to signal arriving from one direction than from another.

The property of a microphone or antenna of being more sensitive in one direction than in another