There is a common belief that you need to compute a complete link budget to optimize the operating point of a nonlinear amplifier.Clearly, a compromise is necessary between the nonlinear distortions in the amplifier and the signal-to-noise ratio in the receiver demodulator.This compromise can be obtained from the complete link budget by trial and error, …
Continue reading "Optimization of amplifier nominal power and operating point"
Most link budgets are based on Friis transmission formula [1]. However, they generally use a more contemporary expression [2] instead of the original one. Both these formulas are also discussed in [3] with a derivation based on radiometry. Using the contemporary formula has many consequences as values like free space path loss (FSPL), transmit equivalent …
Continue reading "Free space path loss is not useful in all link budgets"
Jacques Sombrin Consulting Engineer and Researcher with more than 40 years experience in Microwaves and in Telecommunication Satellites. Minimizing energy consumption in telecoms After a career in CNES, the French Space Agency, as a Microwaves Engineer, Head of Microwaves department, Head of Transmission division, Assistant Director and Senior Expert in Radio-Frequency, I work on some …
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