LCM of two numbers

Source Impedance of Low Noise Amplifier Calculator

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✖Output Impedance is a measure of the opposition to current flow that an electrical source presents to its load.ⓘ Output Impedance [R_out]			+10% -10%
✖Feedback Resistance is a resistance that is connected between the output of the amplifier and the input of the amplifier.ⓘ Feedback Resistance [R_f]			+10% -10%

✖Source Impedance is the opposition to current flow that the source presents to the load.ⓘ Source Impedance of Low Noise Amplifier [R_s]

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Source Impedance of Low Noise Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Source Impedance = 2*Output Impedance-Feedback Resistance
R_s = 2*R_out-R_f
This formula uses 3 Variables

Variables Used

Source Impedance - (Measured in Ohm) - Source Impedance is the opposition to current flow that the source presents to the load.
Output Impedance - (Measured in Ohm) - Output Impedance is a measure of the opposition to current flow that an electrical source presents to its load.
Feedback Resistance - (Measured in Ohm) - Feedback Resistance is a resistance that is connected between the output of the amplifier and the input of the amplifier.

STEP 1: Convert Input(s) to Base Unit

Output Impedance: 29 Ohm --> 29 Ohm No Conversion Required
Feedback Resistance: 35 Ohm --> 35 Ohm No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_s = 2*R_out-R_f --> 2*29-35

Evaluating ... ...

R_s = 23

STEP 3: Convert Result to Output's Unit

23 Ohm --> No Conversion Required

FINAL ANSWER

23 Ohm <-- Source Impedance

(Calculation completed in 00.004 seconds)

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Return Loss of Low-Noise Amplifier

LaTeX Go Return Loss = modulus((Input Impedance-Source Impedance)/(Input Impedance+Source Impedance))^2

Voltage Gain of Low Noise Amplifier given DC Voltage Drop

LaTeX Go Voltage Gain = 2*DC Voltage Drop/(Gate to Source Voltage-Threshold Voltage)

Output Impedance of Low Noise Amplifier

LaTeX Go Output Impedance = (1/2)*(Feedback Resistance+Source Impedance)

Voltage Gain of Low Noise Amplifier

LaTeX Go Voltage Gain = Transconductance*Drain Resistance

Source Impedance of Low Noise Amplifier Formula

LaTeX Go

Source Impedance = 2*Output Impedance-Feedback Resistance
R_s = 2*R_out-R_f

What are the applications of source impedance matching in LNAs?

Source impedance matching is crucial in various applications where LNAs are employed:

Radio astronomy: LNAs in radio astronomy require precise source impedance matching to minimize reflections that can degrade the quality of astronomical signals.

Medical imaging: LNAs in medical imaging equipment, such as MRI scanners, need accurate source impedance matching to ensure the integrity of the signals used for diagnostics and treatment.

Wireless communication systems: LNAs in wireless communication systems, such as cellular networks, must have proper source impedance matching to maximize power transfer and minimize signal distortion.

How to Calculate Source Impedance of Low Noise Amplifier?

Source Impedance of Low Noise Amplifier calculator uses Source Impedance = 2*Output Impedance-Feedback Resistance to calculate the Source Impedance, The Source Impedance of Low Noise Amplifier formula is defined as the electrical resistance presented to an amplifier's input terminal by the connected signal source. Source Impedance is denoted by R_s symbol.

How to calculate Source Impedance of Low Noise Amplifier using this online calculator? To use this online calculator for Source Impedance of Low Noise Amplifier, enter Output Impedance (R_out) & Feedback Resistance (R_f) and hit the calculate button. Here is how the Source Impedance of Low Noise Amplifier calculation can be explained with given input values -> 23 = 2*29-35.

FAQ

What is Source Impedance of Low Noise Amplifier?

The Source Impedance of Low Noise Amplifier formula is defined as the electrical resistance presented to an amplifier's input terminal by the connected signal source and is represented as R_s = 2*R_out-R_f or Source Impedance = 2*Output Impedance-Feedback Resistance. Output Impedance is a measure of the opposition to current flow that an electrical source presents to its load & Feedback Resistance is a resistance that is connected between the output of the amplifier and the input of the amplifier.

How to calculate Source Impedance of Low Noise Amplifier?

The Source Impedance of Low Noise Amplifier formula is defined as the electrical resistance presented to an amplifier's input terminal by the connected signal source is calculated using Source Impedance = 2*Output Impedance-Feedback Resistance. To calculate Source Impedance of Low Noise Amplifier, you need Output Impedance (R_out) & Feedback Resistance (R_f). With our tool, you need to enter the respective value for Output Impedance & Feedback Resistance 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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