RF stage


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RF stage

(Radio Frequency stage) The frequency used to carry a radio signal (radio station, TV channel, cellphone channel, etc.). The RF signals are converted to an intermediate stage for demodulation. See IF stage.
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As pointed out before, the interference suppression at RF stage by nonlinear transfer function is based on the amplitude discrimination between the interferer and the wanted signal.
of our bandpass filter in the RF stage to be 5.5 with a bandwidth of 200kHz.
A discrete component RF stage is used to give better performance than would be possible using the simpler "single chip" solutions found in many other designs.
This requires stronger RF stage gain to alleviate the poor noise figure of baseband blocks, but of course this must be traded against the linearity problems, just described, that accompany higher RF gain.