Tutorial: On Basic Link Budget Analysis.pdf

The free space path loss can be calculated using the following formula:

For example, let's assume the attenuation coefficient is 0.1 dB/km and the distance is 10 km. The atmospheric attenuation would be:

where α is the attenuation coefficient in dB/km, and d is the distance in kilometers. Tutorial on Basic Link Budget Analysis.pdf

A basic tutorial breaks down the budget into logical blocks: the transmit side, the propagation channel, and the receive side.

For example, let's assume the distance between the transmitter and receiver is 10 km and the frequency is 2.4 GHz. The free space path loss would be: The free space path loss can be calculated

Received Power (dBm) = 20 dBm + 10 dB + 12 dB - 102.2 dB - 1 dB = -61.2 dBm

Received Power (dBm) = Transmitted Power (dBm) + Antenna Gains (dB) - FSPL (dB) - AA (dB) For example, let's assume the distance between the

This is the heart of the analysis. Beyond free-space path loss, a good tutorial introduces real-world impairments: