Reflection Attenuator Calculator

Fairview Microwave's Reflection Attenuator Calculator allows you to determine the two possible resistor values (R₁ > Z₀ & R₁ < Z₀) for a reflection attenuator (measured in Ohms).

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Attenuation (dB):

Impedance (Ω):

Result:

R₁ > Z₀:
R₁ < Z₀:

Reflection Attenuators use two equal resistors, each grounded and connected to the same node, to attenuate a signal. For this reason, there are two possible solutions to the value of the resistors used, one larger than the system impedance and one smaller. Visit Fairview Microwave's RF coaxial attenuators page for product details.

**Note: All of our calculators allow SI prefix input. For example, if you wish to input "25000000", just type "25M" instead. See the quick-reference table below for all compatible SI prefixes.

Prefix	Symbol	Value
Tera	'T'	10¹²
Giga	'G'	10⁹
Mega	'M'	10⁶
kilo	'k'	10³

Prefix	Symbol	Value
pico	'p'	10^-12
nano	'n'	10^-9
micro	'u'	10^-6
milli	'm'	10^-3

Reflection Attenuator Calculator

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Result:

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