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Directivity of Antenna Calculator

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Antenna Theory Parameters Special Antennas Wave Propagation

✖Radiation Intensity refers to the power radiated per unit solid angle by an antenna in a specific direction.ⓘ Radiation Intensity [U]			+10% -10%
✖Average Radiation Intensity is the average component of antenna resistance that accounts for the power radiated into space.ⓘ Average Radiation Intensity [R_avg]			+10% -10%

✖Directivity of antenna measures the degree to which the radiation emitted is concentrated in a single direction.ⓘ Directivity of Antenna [D_a]

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Directivity of Antenna Solution

STEP 0: Pre-Calculation Summary

Formula Used

Directivity of Antenna = Radiation Intensity/Average Radiation Intensity
D_a = U/R_avg
This formula uses 3 Variables

Variables Used

Directivity of Antenna - Directivity of antenna measures the degree to which the radiation emitted is concentrated in a single direction.
Radiation Intensity - (Measured in Watt per Steradian) - Radiation Intensity refers to the power radiated per unit solid angle by an antenna in a specific direction.
Average Radiation Intensity - (Measured in Watt per Steradian) - Average Radiation Intensity is the average component of antenna resistance that accounts for the power radiated into space.

STEP 1: Convert Input(s) to Base Unit

Radiation Intensity: 27 Watt per Steradian --> 27 Watt per Steradian No Conversion Required
Average Radiation Intensity: 3.12 Watt per Steradian --> 3.12 Watt per Steradian No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

D_a = U/R_avg --> 27/3.12

Evaluating ... ...

D_a = 8.65384615384615

STEP 3: Convert Result to Output's Unit

8.65384615384615 --> No Conversion Required

FINAL ANSWER

8.65384615384615 ≈ 8.653846 <-- Directivity of Antenna

(Calculation completed in 00.004 seconds)

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< Antenna Theory Parameters Calculators

Effective Area of Antenna

LaTeX Go Effective Area Antenna = (Thermal Resistance*Incremental Temperature)/Power Density of Antenna

Total Power of Antenna

LaTeX Go Total Power of Antenna = Thermal Resistance*Antenna Temperature*Bandwidth

Radiation Intensity

LaTeX Go Radiation Intensity = Isotropic Radiation Intensity*Directivity of Antenna

Power Per Unit Bandwidth

LaTeX Go Power per Unit = Thermal Resistance*Resistor Absolute Temperature

Directivity of Antenna Formula

LaTeX Go

Directivity of Antenna = Radiation Intensity/Average Radiation Intensity
D_a = U/R_avg

Why is directivity important in antenna?

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.

How to Calculate Directivity of Antenna?

Directivity of Antenna calculator uses Directivity of Antenna = Radiation Intensity/Average Radiation Intensity to calculate the Directivity of Antenna, The Directivity of Antenna formula is defined as measure of the concentration of an antennas's radiation pattern in a particular direction. Directivity of Antenna is denoted by D_a symbol.

How to calculate Directivity of Antenna using this online calculator? To use this online calculator for Directivity of Antenna, enter Radiation Intensity (U) & Average Radiation Intensity (R_avg) and hit the calculate button. Here is how the Directivity of Antenna calculation can be explained with given input values -> 0.086538 = 27/3.12.

FAQ

What is Directivity of Antenna?

The Directivity of Antenna formula is defined as measure of the concentration of an antennas's radiation pattern in a particular direction and is represented as D_a = U/R_avg or Directivity of Antenna = Radiation Intensity/Average Radiation Intensity. Radiation Intensity refers to the power radiated per unit solid angle by an antenna in a specific direction & Average Radiation Intensity is the average component of antenna resistance that accounts for the power radiated into space.

How to calculate Directivity of Antenna?

The Directivity of Antenna formula is defined as measure of the concentration of an antennas's radiation pattern in a particular direction is calculated using Directivity of Antenna = Radiation Intensity/Average Radiation Intensity. To calculate Directivity of Antenna, you need Radiation Intensity (U) & Average Radiation Intensity (R_avg). With our tool, you need to enter the respective value for Radiation Intensity & Average Radiation Intensity and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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