Make use of the noise temperature calculator isĀ calculating the source noise temperature in a two-port network or amplifier that will result in the same output noise power when connected to a noise-free network or amplifier as the actual network or amplifier connected to a noise-free source when connected to a noise-free source.

**Effective Noise Temperature Calculator:** The Effective Noise Temperature Calculator is a free online tool that calculates the effective noise temperature for a particular frequency. The effective noise temperature calculator tool speeds up the process by displaying the effective noise temperature in a matter of seconds.

This calculator calculates a systems noise figure and noise temperature. Depending on the input type, the noise temperature calculator will generate either a noise figure or a noise temperature.

The effective noise temperature is defined as the temperature of the resistor at which the noise power is equal to the circuit or device's.In the telecommunications industry, the effective noise temperature is commonly utilised.

The formula **T = N/kB** can be used to compute the effective noise temperature.

Where,

- N denotes the amount of noise inside a given bandwidth.
- B is the bandwidth
- K is the Boltzmann constant, which is approximately equal to 1.38*10
^{-23}JK^{-1}

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The terms noise factor and noise figure are fairly self-explanatory: they refer to the noise that a component, such as an amplifier, adds to the input signal as it travels through to the output, or that is generated by thermal motion within a passive component. Entropy, device and material physics, random electron mobility, and numerous defects, to name a few factors, are all sources of this inescapable, internally generated noise.

The noise factor (F) has a simple quantitative definition: it is the ratio of the input signal-to-noise ratio (SNR) to the output SNR:

**Noise Factor (F) = (Input Signal/Input Noise)/(Output Signal/Output Noise).**

The following is how to use the effective noise temperature calculator:

- Enter the temperature or bandwidth of noise in the appropriate field.
- To obtain the effective noise temperature, click the Calculate button.
- Finally, The effective noise temperature will be displayed in the new window.

**1. What about noise temperature of an amplifier?**

The temperature of a resistance that would produce the same noise power at the output of an ideal (noise-free) amplifier as that provided by the real amplifier when its input is terminated with a noise-free resistance is known as the noise temperature of an amplifier.

**2. What is the relationship between noise temperature and noise figure?**

The noise figure number which is expressed in decibels (dB), shows the performance of an amplifier or an RF receiver. The temperature necessary to produce an equivalent amount of Johnson-Nyquist Noise is referred to as the noise temperature.

**3. What is the formula for effective noise temperature?**

The formula **T = N/kB** can be used to compute the effective noise temperature.

Where,

- N denotes the amount of noise inside a given bandwidth.
- B is the bandwidth
- K is the Boltzmann constant, which is approximately equal to 1.38*10
^{-23}JK^{-1}