The LNA boosts the antenna sign to beat feed line losses involving the antenna as well as the receiver. To simplify the sounds gain calculation, the sound resources in The easy amplifier circuit in Figure 1 is often decreased to one total RTI noise supply (Vni, Overall), as proven in https://low-noise-amplifier55665.ttblogs.com/17014801/considerations-to-know-about-low-noise-amplifier