Understanding the Attenuation Calculation

Attenuation measures the reduction of signal strength during transmission. It ensures signals are optimized for distance and device limitations, enhancing communication efficiency.

Formula: dB = 20 * log10(Vout / Vin)

Where:

• dB: Attenuation in decibels.
• Vout: Output voltage.
• Vin: Input voltage.

How to Use the Calculator:

• Enter the input voltage value and select its unit.
• Enter the output voltage value and select its unit.
• Select the desired output unit (unitless, dB10, or dB20).
• Click "Calculate" to see the result.
• Use "Reset" to clear all fields.

Example Calculations:

Example 1:

Input: 10 Volts (V), Output: 5 Volts (V)

Calculation:

• Unitless ratio = Vout / Vin = 5 / 10 = 0.5
• Attenuation (dB10) = 10 * log10(0.5) ≈ -3.01 dB
• Attenuation (dB20) = 20 * log10(0.5) ≈ -6.02 dB

Example 2:

Input: 1000 mV, Output: 100 mV

Calculation:

• Convert input and output to Volts: Vin = 1000 * 0.001 = 1 V, Vout = 100 * 0.001 = 0.1 V
• Unitless ratio = Vout / Vin = 0.1 / 1 = 0.1
• Attenuation (dB10) = 10 * log10(0.1) ≈ -10.00 dB
• Attenuation (dB20) = 20 * log10(0.1) ≈ -20.00 dB