By using an LNA near to the sign source, the influence of noise from subsequent levels from the obtain chain in the circuit is diminished by the signal achieve established from the LNA, while the sound developed because of the LNA by itself is injected specifically into the obtained signal. https://low-noiseamplifier23333.ampblogs.com/the-smart-trick-of-low-noise-amplifier-that-no-one-is-discussing-74014612