✖Power Density Of antenna is the measure of the power from an antenna to a certain distance D.ⓘ Power Density of Antenna [S]			+10% -10%
✖Thermal resistance is a property of the resistor that quantifies how effectively it dissipates heat. It is measured in Kelvin per watt (k/w).ⓘ Thermal Resistance [k]			+10% -10%
✖The Bandwidth is a range of frequencies, or information, that a circuit can handle or the range of frequencies that a signal from antenna occupies.ⓘ Bandwidth [B_a]			+10% -10%

✖Antenna Temperature is a measure of the noise being produced by an antenna in a given environment.ⓘ Noise Temperature of Antenna [T_a]

⎘ Copy

👎

Formula

✖

Noise Temperature of Antenna

Formula

`"T"_{"a"} = ("S")/("k"*"B"_{"a"})`

Example

`"17.26845K"=("55W/m³")/("12.25K/W"*"0.26Hz")`

Calculator

LaTeX

Reset

👍

Download Antenna Theory Parameters Formulas PDF PDF Image

Noise Temperature of Antenna Solution

STEP 0: Pre-Calculation Summary

Formula Used

Antenna Temperature = (Power Density of Antenna)/(Thermal Resistance*Bandwidth)
T_a = (S)/(k*B_a)
This formula uses 4 Variables

Variables Used

Antenna Temperature - (Measured in Kelvin) - Antenna Temperature is a measure of the noise being produced by an antenna in a given environment.
Power Density of Antenna - (Measured in Watt Per Cubic Meter) - Power Density Of antenna is the measure of the power from an antenna to a certain distance D.
Thermal Resistance - (Measured in Kelvin per Watt) - Thermal resistance is a property of the resistor that quantifies how effectively it dissipates heat. It is measured in Kelvin per watt (k/w).
Bandwidth - (Measured in Hertz) - The Bandwidth is a range of frequencies, or information, that a circuit can handle or the range of frequencies that a signal from antenna occupies.

STEP 1: Convert Input(s) to Base Unit

Power Density of Antenna: 55 Watt Per Cubic Meter --> 55 Watt Per Cubic Meter No Conversion Required
Thermal Resistance: 12.25 Kelvin per Watt --> 12.25 Kelvin per Watt No Conversion Required
Bandwidth: 0.26 Hertz --> 0.26 Hertz No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

T_a = (S)/(k*B_a) --> (55)/(12.25*0.26)

Evaluating ... ...

T_a = 17.2684458398744

STEP 3: Convert Result to Output's Unit

17.2684458398744 Kelvin --> No Conversion Required

FINAL ANSWER

17.2684458398744 ≈ 17.26845 Kelvin <-- Antenna Temperature

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Electronics » Antenna & Wave Propogation » Antenna Theory Parameters » Noise Temperature of Antenna

Credits

Created by Shobhit Dimri

Bipin Tripathi Kumaon Institute of Technology (BTKIT), Dwarahat

Shobhit Dimri has created this Calculator and 900+ more calculators!

Verified by Payal Priya

Birsa Institute of Technology (BIT), Sindri

Payal Priya has verified this Calculator and 1900+ more calculators!

< 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)

Noise Temperature of Antenna Formula

Antenna Temperature = (Power Density of Antenna)/(Thermal Resistance*Bandwidth)
T_a = (S)/(k*B_a)

How is antenna noise temperature determined?

A parameter often encountered in specification sheets for antennas that operate in certain environments is the ratio of gain of the antenna divided by the antenna temperature (or system temperature if a receiver is specified). This parameter is written as G/T, and has units of dB/Kelvin [dB/K].

How to Calculate Noise Temperature of Antenna?

Noise Temperature of Antenna calculator uses Antenna Temperature = (Power Density of Antenna)/(Thermal Resistance*Bandwidth) to calculate the Antenna Temperature, The Noise Temperature of Antenna formula is defined a measure of all noise that enters a receiver through its antenna. These contribute to the receiver system noise temperature. Antenna Temperature is denoted by T_a symbol.

How to calculate Noise Temperature of Antenna using this online calculator? To use this online calculator for Noise Temperature of Antenna, enter Power Density of Antenna (S), Thermal Resistance (k) & Bandwidth (B_a) and hit the calculate button. Here is how the Noise Temperature of Antenna calculation can be explained with given input values -> 17.26845 = (55)/(12.25*0.26).

FAQ

What is Noise Temperature of Antenna?

The Noise Temperature of Antenna formula is defined a measure of all noise that enters a receiver through its antenna. These contribute to the receiver system noise temperature and is represented as T_a = (S)/(k*B_a) or Antenna Temperature = (Power Density of Antenna)/(Thermal Resistance*Bandwidth). Power Density Of antenna is the measure of the power from an antenna to a certain distance D, Thermal resistance is a property of the resistor that quantifies how effectively it dissipates heat. It is measured in Kelvin per watt (k/w) & The Bandwidth is a range of frequencies, or information, that a circuit can handle or the range of frequencies that a signal from antenna occupies.

How to calculate Noise Temperature of Antenna?

The Noise Temperature of Antenna formula is defined a measure of all noise that enters a receiver through its antenna. These contribute to the receiver system noise temperature is calculated using Antenna Temperature = (Power Density of Antenna)/(Thermal Resistance*Bandwidth). To calculate Noise Temperature of Antenna, you need Power Density of Antenna (S), Thermal Resistance (k) & Bandwidth (B_a). With our tool, you need to enter the respective value for Power Density of Antenna, Thermal Resistance & Bandwidth and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search