# RF Wireless World

This page mentions millimeter Wave Link Budget Calculator i.e. mm wave link budget calculator with formula. It takes example of 60 GHz 802.11ad millimeter wave system for calculation for this calculator.

Introduction:
Any frequency in the range from 30 GHz to 300 GHz is known as millimeter wave (i.e. mm-wave) frequency. The system which uses any frequency in this range is known as mm-wave system. IEEE 802.11ad based system is one such system which is also known as WiGig.

The RF link budget helps in understanding transmit power required to meet appropriate SNR and receiver power for optimum system performance after considering path loss and other attenuations parameters such as oxygen attenuation, vapour attenuation, rain attenuation etc. One can vary the transmit power to check received signal level and SNR accordingly based on path loss as input.

Transmit Power, dBm :
Tx Antenna Gain, dB :
Tx line loss, dB :
Operating Frequency, GHz :
Path Length, Km :
Rx Antenna Gain, dB :
Rx line loss, dB :
Rx Noise Figure, dB :
Bandwidth, MHz :
Temperature :
Vapour attenuation, dB/Km :
Oxygen attenuation, dB/Km :
Rain attenuation, dB/Km :

Transmit EIRP :
Free space path loss, dB :
Signal to Noise Ratio, dB :

EXAMPLE of Millimeter Wave Link Budget Calculator:
INPUTS :
Tx power = 12 , Tx Gain = 38, Tx line loss = 0, Operating frequency = 60 GHz, Path length = 0.7 Km, Rx Gain = 38, Rx line loss = 0 , Rx Noise figure= 10 , BW = 2000 , Temp (degreeC) = 25, Vapour attenuation = 0 dB/Km, Oxygen attenuation = 14.9 dB/Km, Rain attenuation = 9.175 dB/Km.
OUTPUTS:
Transmit EIRP = 50 dBm, Free SPace Path Loss = 124.91 dB, Receive Noise Floor = -70.85 dBm, Receive Signal Level = -53.77 dBm, SNR = 17.08 dB Above mm wave Link Budget formula/equations are used in this Millimeter Wave (mm-wave) Link Budget Calculator.

Refer RF Budget Calculator >> with image and equations mentioned below.  ### Useful converters and calculators

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