Complex sentence: The principle can be demonstrated mathematically, the receivers noise figure is calculated by modularly assessing each amplifier stage, each stage consists of a noise figure (F) and an amount of amplification, or gain (G).
Split into simpler sentences: The principle can be demonstrated mathematically; the receiver's noise figure is calculated by modularly assessing each amplifier stage. Each stage consists of a noise figure (F) and an amount of amplification, or gain (G).