Hi Alistu, you have mentioned that
“a LNA (or a low noise amplifier) is as its name implies any amplifier with low noise and is usually used in receiver side in order to give better signal to the receiver for detection.” i.e. a amplifier that is of comparatively less noise,
but while googling i found a different concept “A Low-noise amplifier (LNA) is an electronic amplifier used to amplify very weak signals (for example, signals captured by an antenna). Essentially, an LNA amplifies signals that are barely recognizable without adding a lot of noise, as the name implies.”
you can have a look at https://en.wikipedia.org/wiki/Low-noise_amplifier
it is basically used at the front-end of a radio receiver circuit.
Thanks for the reply.
regards