# Definitions for directivitydi·rec·tiv·i·ty

### Princeton's WordNetRate this definition:0.0 / 0 votes

1. directivity, directionalitynoun

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

"the antenna received signals with no directivity"

2. directivity, directivenessnoun

the quality of being directive

### WiktionaryRate this definition:0.0 / 0 votes

1. directivitynoun

The effect of earthquake motion propagation being greater in the direction of the rupture

### WikipediaRate this definition:0.0 / 0 votes

1. Directivity

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. Therefore, the directivity of a hypothetical isotropic radiator is 1, or 0 dBi. An antenna's directivity is greater than its gain by an efficiency factor, radiation efficiency. Directivity is an important measure because many antennas and optical systems are designed to radiate electromagnetic waves in a single direction or over a narrow-angle. By the principle of reciprocity, the directivity of an antenna when receiving is equal to its directivity when transmitting. The directivity of an actual antenna can vary from 1.76 dBi for a short dipole to as much as 50 dBi for a large dish antenna.

### ChatGPTRate this definition:0.0 / 0 votes

1. directivity

Directivity is a measure of the concentration or focusing of energy radiated or received by an antenna or other type of transceiver in a specific direction. It is often represented as a ratio comparison to an ideal isotropic antenna which radiates equally in all directions. High directivity usually implies that the device is designed to transmit or receive more energy in certain directions compared to others.

### WikidataRate this definition:0.0 / 0 votes

1. Directivity

In electromagnetics, directivity is a figure of merit for an antenna. 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 radiating the same total power. An antenna's directivity is a component of its gain; the other component is its efficiency. Directivity is an important measure because most emissions are intended to go in a particular direction or at least in a particular plane; emissions in other directions or planes are wasteful. The directivity of an actual antenna can vary from 1.76 dBi for a short dipole, to as much as 50 dBi for a large dish antenna.

### Numerology

1. Chaldean Numerology

The numerical value of directivity in Chaldean Numerology is: 5

2. Pythagorean Numerology

The numerical value of directivity in Pythagorean Numerology is: 9

### Popularity rank by frequency of use

directivity#100000#108641#333333

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"directivity." Definitions.net. STANDS4 LLC, 2024. Web. 21 May 2024. <https://www.definitions.net/definition/directivity>.

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