Satellite & Terrestrial RF Link Budget Studio

Friis & ITU-R P.676 Radio Propagation Engine

Satellite & Terrestrial RF Link Budget Studio

End-to-end electrodynamic power budget evaluating EIRP, Free-Space Path Loss (FSPL), atmospheric attenuation, receiver figure of merit (G/T), and Eb/N0 link margin.

Link Margin

+30.21 dB

Mission Viable (Good Fade Margin)

Carrier-to-Noise (C/N₀)

113.7 dB·Hz

Eb/N₀ = 36.71 dB

Transmitter EIRP

+40.5 dBW

+70.5 dBm (10W into 32 dBi)

Received Power (P_rx)

-63.4 dBm

FSPL = 168.8 dB

1. Transmitter Subsystem

RF Output Power P_tx (Watts)

= 40.0 dBm (10.0 dBW)

Transmit Antenna Gain G_tx (dBi)

Tx Feed & Radome Loss (dB)

2. Propagation & Medium

Slant Range Distance (km)

Carrier Frequency (GHz)

Atm. Loss

Rain Loss

Pol. Loss

3. Receiver & Demodulator

Rx Gain (dBi)

Rx Feed (dB)

T_ant (K)

T_rx (K)

Data Rate (Mbps)

Req. Eb/N₀ (dB)

Cascade Power Level Step-Down Diagram

1. Transmitter PA Output+40.0 dBm

2. Post-Antenna EIRP (+G_tx - Feed)+70.5 dBm

3. Total Propagation Attenuation (FSPL + Atm + Rain + Pol)-171.1 dB

4. Ground Terminal Incident Power (P_rx)-63.4 dBm