Isotropic Radiation Intensity Calculator

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Antenna Theory Parameters

Special Antennas

Wave Propagation

✖Radiated Power is defined as power in watts that would have to be radiated by a half-wave dipole antenna to give the same radiation intensity.ⓘ Radiated Power [P_rad]

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✖Isotropic Radiation Intensity refers to the radiation intensity of an idealized isotropic radiator.ⓘ Isotropic Radiation Intensity [U_o]

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Formula

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Isotropic Radiation Intensity

Formula

`"U"_{"o"} = "P"_{"rad"}/(4*pi)`

Example

`"2.705634W/sr"="34W"/(4*pi)`

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Isotropic Radiation Intensity Solution

STEP 0: Pre-Calculation Summary

Formula Used

Isotropic Radiation Intensity = Radiated Power/(4*pi)
U_o = P_rad/(4*pi)
This formula uses 1 Constants, 2 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Variables Used

Isotropic Radiation Intensity - (Measured in Watt per Steradian) - Isotropic Radiation Intensity refers to the radiation intensity of an idealized isotropic radiator.
Radiated Power - (Measured in Watt) - Radiated Power is defined as power in watts that would have to be radiated by a half-wave dipole antenna to give the same radiation intensity.

STEP 1: Convert Input(s) to Base Unit

Radiated Power: 34 Watt --> 34 Watt No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

U_o = P_rad/(4*pi) --> 34/(4*pi)

Evaluating ... ...

U_o = 2.70563403256222

STEP 3: Convert Result to Output's Unit

2.70563403256222 Watt per Steradian --> No Conversion Required

FINAL ANSWER

2.70563403256222 ≈ 2.705634 Watt per Steradian <-- Isotropic Radiation Intensity

(Calculation completed in 00.007 seconds)

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Created by Shobhit Dimri

Bipin Tripathi Kumaon Institute of Technology (BTKIT), Dwarahat

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Birsa Institute of Technology (BIT), Sindri

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< 24 Antenna Theory Parameters Calculators

Distance between Transmitting and Receiving Point

Go Transmitter Receiver Distance = (Antenna Current*120*pi*Height of Transmitter*Height of Receiver)/(Strength of Ground Wave Propagation*Wavelength)

Height of Transmitting Antenna

Go Height of Transmitter = (Strength of Ground Wave Propagation*Wavelength*Transmitter Receiver Distance)/(120*pi*Antenna Current*Height of Receiver)

Height of Receiving Antenna

Go Height of Receiver = (Strength of Ground Wave Propagation*Wavelength*Transmitter Receiver Distance)/(120*pi*Height of Transmitter*Antenna Current)

Strength of Ground Wave

Go Strength of Ground Wave Propagation = (120*pi*Height of Transmitter*Height of Receiver*Antenna Current)/(Wavelength*Transmitter Receiver Distance)

Antenna Current

Go Antenna Current = (Strength of Ground Wave Propagation*Wavelength*Transmitter Receiver Distance)/(120*pi*Height of Transmitter*Height of Receiver)

Friis Formula

Go Power at Receiving Antenna = Transmitting Power*Gain of Receiving Antenna*Gain of Transmitting Antenna*Wavelength^2/(4*3.14*Transmitter Receiver Distance)^2

Power Density of Antenna

Go Power Density of Antenna = (Total Input Power*Antenna Gain)/(4*pi*Transmitter Receiver Distance)

Effective Area of Antenna

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

Noise Temperature of Antenna

Go Antenna Temperature = (Power Density of Antenna)/(Thermal Resistance*Bandwidth)

Total Power of Antenna

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

Radiation Intensity

Go Radiation Intensity = Isotropic Radiation Intensity*Directivity of Antenna

Average Radiation Intensity

Go Average Radiation Intensity = Radiation Intensity/Directivity of Antenna

Directivity of Antenna

Go Directivity of Antenna = Radiation Intensity/Average Radiation Intensity

Power Per Unit Bandwidth

Go Power per Unit = Thermal Resistance*Resistor Absolute Temperature

Total Antenna Resistance

Go Total Antenna Resistance = Ohmic Resistance+Radiation Resistance

Radiation Resistance

Go Radiation Resistance = Total Antenna Resistance-Ohmic Resistance

Ohmic Resistance

Go Ohmic Resistance = Total Antenna Resistance-Radiation Resistance

Antenna Gain

Go Antenna Gain = Radiation Intensity/Isotropic Radiation Intensity

Length of Binomial Array

Go Length of Binomial Array = (No of Element-1)*Wavelength/2

Isotropic Radiation Intensity

Go Isotropic Radiation Intensity = Radiated Power/(4*pi)

Antenna Efficiency

Go Antenna Efficiency = Radiated Power/Total Input Power

Total Input Power

Go Total Input Power = Radiated Power/Antenna Efficiency

Duct Height

Go Duct Height = (Maximum Duct Wavelength/0.014)^(2/3)

Maximum Duct Wavelength

Go Maximum Duct Wavelength = 0.014*Duct Height^(3/2)

Isotropic Radiation Intensity Formula

Isotropic Radiation Intensity = Radiated Power/(4*pi)
U_o = P_rad/(4*pi)

What is meant by isotropic antenna?

An isotropic antenna is defined as a hypothetical antenna having the same radiation in all directions (i.e., uniform radiation). It is assumed that the power gain of an isotropic antenna is 1.0.

How to Calculate Isotropic Radiation Intensity?

Isotropic Radiation Intensity calculator uses Isotropic Radiation Intensity = Radiated Power/(4*pi) to calculate the Isotropic Radiation Intensity, Isotropic Radiation Intensity refers to the radiation intensity of an idealized isotropic radiator. An isotropic radiator is a theoretical concept used as a reference point for comparing the radiation characteristics of real antennas. Isotropic Radiation Intensity is denoted by U_o symbol.

How to calculate Isotropic Radiation Intensity using this online calculator? To use this online calculator for Isotropic Radiation Intensity, enter Radiated Power (P_rad) and hit the calculate button. Here is how the Isotropic Radiation Intensity calculation can be explained with given input values -> 2.705634 = 34/(4*pi).

FAQ

What is Isotropic Radiation Intensity?

Isotropic Radiation Intensity refers to the radiation intensity of an idealized isotropic radiator. An isotropic radiator is a theoretical concept used as a reference point for comparing the radiation characteristics of real antennas and is represented as U_o = P_rad/(4*pi) or Isotropic Radiation Intensity = Radiated Power/(4*pi). Radiated Power is defined as power in watts that would have to be radiated by a half-wave dipole antenna to give the same radiation intensity.

How to calculate Isotropic Radiation Intensity?

Isotropic Radiation Intensity refers to the radiation intensity of an idealized isotropic radiator. An isotropic radiator is a theoretical concept used as a reference point for comparing the radiation characteristics of real antennas is calculated using Isotropic Radiation Intensity = Radiated Power/(4*pi). To calculate Isotropic Radiation Intensity, you need Radiated Power (P_rad). With our tool, you need to enter the respective value for Radiated Power 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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