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Noise Temperature of Antenna Formula

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Antenna Temperature is a measure of the noise being produced by an antenna in a given environment. Check FAQs

T a = \frac{S}{k \cdot B a}

T_a - Antenna Temperature?S - Power Density of Antenna?k - Thermal Resistance?B_a - Bandwidth?

Noise Temperature of Antenna Example

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Here is how the Noise Temperature of Antenna equation looks like with Values.

Here is how the Noise Temperature of Antenna equation looks like with Units.

Here is how the Noise Temperature of Antenna equation looks like.

17.2684 = \frac{55}{12.25 \cdot 0.26}

17.2684K = \frac{55W/m³}{12.25K/W \cdot 0.26Hz}

17.2684 = \frac{55}{12.25 \cdot 0.26}

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Noise Temperature of Antenna Solution

Follow our step by step solution on how to calculate Noise Temperature of Antenna?

FIRST Step Consider the formula

T a = \frac{S}{k \cdot B a}

Next Step Substitute values of Variables

∴

T a = \frac{55W/m³}{12.25K/W \cdot 0.26Hz}

Next Step Prepare to Evaluate

∴

T a = \frac{55}{12.25 \cdot 0.26}

Next Step Evaluate

∴

T a = 17.2684458398744K

LAST Step Rounding Answer

∴

T a = 17.2684K

Noise Temperature of Antenna Formula Elements

Variables

Antenna Temperature

Antenna Temperature is a measure of the noise being produced by an antenna in a given environment.

Symbol: T_a

Measurement: TemperatureUnit: K

Note: Value can be positive or negative.

Formulas to find Antenna Temperature

Power Density of Antenna

Power Density Of antenna is the measure of the power from an antenna to a certain distance D.

Symbol: S

Measurement: Power DensityUnit: W/m³

Note: Value can be positive or negative.

Formulas to find Power Density of Antenna

Thermal Resistance

Thermal resistance is a property of the resistor that quantifies how effectively it dissipates heat. It is measured in Kelvin per watt (k/w).

Symbol: k

Measurement: Thermal ResistanceUnit: K/W

Note: Value should be greater than 0.

Formulas to find Thermal Resistance

Bandwidth

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.

Symbol: B_a

Measurement: FrequencyUnit: Hz

Note: Value should be greater than 0.

Formulas to find Bandwidth

Other formulas in Antenna Theory Parameters category

Go Radiation Intensity

U = U o \cdot D a

Go Power Per Unit Bandwidth

P u = k \cdot T R

Go Total Power of Antenna

P a = k \cdot T a \cdot B a

Go Effective Area of Antenna

A e = \frac{k \cdot ΔT}{S}

How to Evaluate Noise Temperature of Antenna?

Noise Temperature of Antenna evaluator uses Antenna Temperature = (Power Density of Antenna)/(Thermal Resistance*Bandwidth) to evaluate 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 evaluate Noise Temperature of Antenna using this online evaluator? To use this online evaluator for Noise Temperature of Antenna, enter Power Density of Antenna (S), Thermal Resistance (k) & Bandwidth (B_a) and hit the calculate button.

FAQs on Noise Temperature of Antenna

What is the formula to find Noise Temperature of Antenna?

The formula of Noise Temperature of Antenna is expressed as Antenna Temperature = (Power Density of Antenna)/(Thermal Resistance*Bandwidth). Here is an example- 17.26845 = (55)/(12.25*0.26).

How to calculate Noise Temperature of Antenna?

With Power Density of Antenna (S), Thermal Resistance (k) & Bandwidth (B_a) we can find Noise Temperature of Antenna using the formula - Antenna Temperature = (Power Density of Antenna)/(Thermal Resistance*Bandwidth).

Can the Noise Temperature of Antenna be negative?

Yes, the Noise Temperature of Antenna, measured in Temperature can be negative.

Which unit is used to measure Noise Temperature of Antenna?

Noise Temperature of Antenna is usually measured using the Kelvin[K] for Temperature. Celsius[K], Fahrenheit[K], Rankine[K] are the few other units in which Noise Temperature of Antenna can be measured.

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