Return Loss Calculator

✖Reflection Coefficient is a parameter that describes how much of a wave is reflected by an impedance discontinuity in the transmission medium.ⓘ Reflection Coefficient [r]

+10%

-10%

✖Return loss is a measure in relative terms of the power of the signal reflected by a discontinuity in a transmission line or optical fiber.ⓘ Return Loss [R_L]

⎘ Copy

👎

Formula

✖

Return Loss

Formula

`"R"_{"L"} = -20*log10("r")`

Example

`"10.45757dB"=-20*log10("0.30")`

Calculator

LaTeX

Reset

👍

Download Microwave Tubes and Circuits Formula PDF

Return Loss Solution

STEP 0: Pre-Calculation Summary

Formula Used

Return Loss = -20*log10(Reflection Coefficient)
R_L = -20*log10(r)
This formula uses 1 Functions, 2 Variables

Functions Used

log10 - The common logarithm, also known as the base-10 logarithm or the decimal logarithm, is a mathematical function that is the inverse of the exponential function., log10(Number)

Variables Used

Return Loss - (Measured in Decibel) - Return loss is a measure in relative terms of the power of the signal reflected by a discontinuity in a transmission line or optical fiber.
Reflection Coefficient - Reflection Coefficient is a parameter that describes how much of a wave is reflected by an impedance discontinuity in the transmission medium.

STEP 1: Convert Input(s) to Base Unit

Reflection Coefficient: 0.3 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_L = -20*log10(r) --> -20*log10(0.3)

Evaluating ... ...

R_L = 10.4575749056068

STEP 3: Convert Result to Output's Unit

10.4575749056068 Decibel --> No Conversion Required

FINAL ANSWER

10.4575749056068 ≈ 10.45757 Decibel <-- Return Loss

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Electronics » Microwave Theory » Microwave Tubes and Circuits » Beam Tube » Return Loss

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 Urvi Rathod

Vishwakarma Government Engineering College (VGEC), Ahmedabad

Urvi Rathod has verified this Calculator and 1900+ more calculators!

< 19 Beam Tube Calculators

Microwave Voltage in Buncher Gap

Go Microwave Voltage in the Buncher Gap = (Amplitude of Signal/(Angular Frequency of Microwave Voltage*Average Transit Time))*(cos(Angular Frequency of Microwave Voltage*Entering Time)-cos(Resonant Angular Frequency+(Angular Frequency of Microwave Voltage*Buncher Gap Distance)/Velocity of Electron))

RF Output Power

Go RF Output Power = RF Input Power*exp(-2*RF Attenuation Constant*RF Circuit Length)+int((RF Power Generated/RF Circuit Length)*exp(-2*RF Attenuation Constant*(RF Circuit Length-x)),x,0,RF Circuit Length)

Repeller Voltage

Go Repeller Voltage = sqrt((8*Angular Frequency^2*Drift Space Length^2*Small Beam Voltage)/((2*pi*Number of Oscillation)-(pi/2))^2*([Mass-e]/[Charge-e]))-Small Beam Voltage

Average Power Loss in Resonator

Go Average Power Loss in Resonator = (Surface Resistance of resonator/2)*(int(((Tangential Magnetic Intensity Peak Value)^2)*x,x,0,Radius of resonator))

Plasma Frequency

Go Plasma Frequency = sqrt(([Charge-e]*DC Electron Charge Density)/([Mass-e]*[Permitivity-vacuum]))

Total Energy Stored in Resonator

Go Total Energy Stored in Resonator = int((Permittivity of Medium/2*Electric Field Intensity^2)*x,x,0,Resonator Volume)

Skin Depth

Go Skin Depth = sqrt(Resistivity/(pi*Relative Permeability*Frequency))

Carrier Frequency in Spectral Line

Go Carrier Frequency = Spectral Line Frequency-Number of Samples*Repetition Frequency

Total Electron Beam Current Density

Go Total Electron Beam Current Density = -DC Beam Current Density+Instantaneous RF Beam Current Perturbation

Total Electron Velocity

Go Total Electron Velocity = DC Electron Velocity+Instantaneous Electron Velocity Perturbation

Total Charge Density

Go Total Charge Density = -DC Electron Charge Density+Instantaneous RF Charge Density

Power Obtained from DC Power Supply

Go DC Power Supply = Power Generated in Anode Circuit/Electronic Efficiency

Power Generated in Anode Circuit

Go Power Generated in Anode Circuit = DC Power Supply*Electronic Efficiency

Reduced Plasma Frequency

Go Reduced Plasma Frequency = Plasma Frequency*Space Charge Reduction Factor

Maximum Voltage Gain at Resonance

Go Maximum Voltage Gain at Resonance = Transconductance/Conductance

Return Loss

Go Return Loss = -20*log10(Reflection Coefficient)

Rectangular Microwave Pulse Peak Power

Go Pulse Peak Power = Average Power/Duty Cycle

AC Power Supplied by Beam Voltage

Go AC Power Supply = (Voltage*Current)/2

DC Power Supplied by Beam Voltage

Go DC Power Supply = Voltage*Current

Return Loss Formula

Return Loss = -20*log10(Reflection Coefficient)
R_L = -20*log10(r)

Why is Transmission Voltage High?

High voltage transmission lines deliver electricity over long distances. The high voltage is required to reduce the amount of energy lost during the distance.

How to Calculate Return Loss?

Return Loss calculator uses Return Loss = -20*log10(Reflection Coefficient) to calculate the Return Loss, The Return Loss formula is defined as is a measure in relative terms of the power of the signal reflected by a discontinuity in a transmission line or optical fiber. Return Loss is denoted by R_L symbol.

How to calculate Return Loss using this online calculator? To use this online calculator for Return Loss, enter Reflection Coefficient (r) and hit the calculate button. Here is how the Return Loss calculation can be explained with given input values -> 10.45757 = -20*log10(0.3).

FAQ

What is Return Loss?

The Return Loss formula is defined as is a measure in relative terms of the power of the signal reflected by a discontinuity in a transmission line or optical fiber and is represented as R_L = -20*log10(r) or Return Loss = -20*log10(Reflection Coefficient). Reflection Coefficient is a parameter that describes how much of a wave is reflected by an impedance discontinuity in the transmission medium.

How to calculate Return Loss?

The Return Loss formula is defined as is a measure in relative terms of the power of the signal reflected by a discontinuity in a transmission line or optical fiber is calculated using Return Loss = -20*log10(Reflection Coefficient). To calculate Return Loss, you need Reflection Coefficient (r). With our tool, you need to enter the respective value for Reflection Coefficient 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