FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Feedback Factor of Low Noise Amplifier Formula

Fx Copy

LaTeX Copy

Feedback Factor is a critical parameter that determines the stability and noise performance of amplifiers. Check FAQs

α = \frac{g m \cdot R s - 1}{2 \cdot g m \cdot R s \cdot A v}

α - Feedback Factor?g_m - Transconductance?R_s - Source Impedance?A_v - Voltage Gain?

Feedback Factor of Low Noise Amplifier Example

With values

With units

Only example

Here is how the Feedback Factor of Low Noise Amplifier equation looks like with Values.

Here is how the Feedback Factor of Low Noise Amplifier equation looks like with Units.

Here is how the Feedback Factor of Low Noise Amplifier equation looks like.

0.0613 = \frac{2.18 \cdot 23 - 1}{2 \cdot 2.18 \cdot 23 \cdot 8}

0.0613 = \frac{2.18S \cdot 23Ω - 1}{2 \cdot 2.18S \cdot 23Ω \cdot 8}

0.0613 = \frac{2.18 \cdot 23 - 1}{2 \cdot 2.18 \cdot 23 \cdot 8}

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Electronics » Category

RF Microelectronics » fx Feedback Factor of Low Noise Amplifier

Feedback Factor of Low Noise Amplifier Solution

Follow our step by step solution on how to calculate Feedback Factor of Low Noise Amplifier?

FIRST Step Consider the formula

α = \frac{g m \cdot R s - 1}{2 \cdot g m \cdot R s \cdot A v}

Next Step Substitute values of Variables

∴

α = \frac{2.18S \cdot 23Ω - 1}{2 \cdot 2.18S \cdot 23Ω \cdot 8}

Next Step Prepare to Evaluate

∴

α = \frac{2.18 \cdot 23 - 1}{2 \cdot 2.18 \cdot 23 \cdot 8}

Next Step Evaluate

∴

α = 0.0612534902273634

LAST Step Rounding Answer

∴

α = 0.0613

Feedback Factor of Low Noise Amplifier Formula Elements

Variables

Feedback Factor

Feedback Factor is a critical parameter that determines the stability and noise performance of amplifiers.

Symbol: α

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Feedback Factor

Transconductance

Transconductance is a measure of how much current the amplifier can produce for a given input voltage.

Symbol: g_m

Measurement: TransconductanceUnit: S

Note: Value should be greater than 0.

Formulas to find Transconductance

Source Impedance

Source Impedance is the opposition to current flow that the source presents to the load.

Symbol: R_s

Measurement: Electric ResistanceUnit: Ω

Note: Value should be greater than 0.

Formulas to find Source Impedance

Voltage Gain

Voltage Gain s a crucial parameter for low-noise amplifiers as it determines the amplifier's ability to amplify weak signals while minimizing noise.

Symbol: A_v

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Voltage Gain

Other formulas in RF Microelectronics category

Go Return Loss of Low-Noise Amplifier

Γ = mod \underset{̲}{u} s {(\frac{Z in - R s}{Z in + R s})}^{2}

Go Voltage Gain of Low Noise Amplifier

A v = g m \cdot R d

Go Voltage Gain of Low Noise Amplifier given DC Voltage Drop

A v = 2 \cdot \frac{V rd}{V gs - V th}

Go Output Impedance of Low Noise Amplifier

R out = (\frac{1}{2}) \cdot (R f + R s)

How to Evaluate Feedback Factor of Low Noise Amplifier?

Feedback Factor of Low Noise Amplifier evaluator uses Feedback Factor = (Transconductance*Source Impedance-1)/(2*Transconductance*Source Impedance*Voltage Gain) to evaluate the Feedback Factor, The Feedback Factor of Low Noise Amplifier formula is defined as a critical parameter that determines the stability and noise performance of amplifiers. It is a measure of the amount of signal that is fed back from the output of an amplifier to its input. Feedback Factor is denoted by α symbol.

How to evaluate Feedback Factor of Low Noise Amplifier using this online evaluator? To use this online evaluator for Feedback Factor of Low Noise Amplifier, enter Transconductance (g_m), Source Impedance (R_s) & Voltage Gain (A_v) and hit the calculate button.

FAQs on Feedback Factor of Low Noise Amplifier

What is the formula to find Feedback Factor of Low Noise Amplifier?

The formula of Feedback Factor of Low Noise Amplifier is expressed as Feedback Factor = (Transconductance*Source Impedance-1)/(2*Transconductance*Source Impedance*Voltage Gain). Here is an example- 0.061224 = (2.18*23-1)/(2*2.18*23*8).

How to calculate Feedback Factor of Low Noise Amplifier?

With Transconductance (g_m), Source Impedance (R_s) & Voltage Gain (A_v) we can find Feedback Factor of Low Noise Amplifier using the formula - Feedback Factor = (Transconductance*Source Impedance-1)/(2*Transconductance*Source Impedance*Voltage Gain).

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit

Feedback Factor of Low Noise Amplifier Formula

Feedback Factor of Low Noise Amplifier Example

Feedback Factor of Low Noise Amplifier Solution

Feedback Factor of Low Noise Amplifier Formula Elements

Other formulas in RF Microelectronics category

How to Evaluate Feedback Factor of Low Noise Amplifier?

FAQs on Feedback Factor of Low Noise Amplifier

Variable Name