An amplifier or amp (for short), is an electronic component that can increase the power of a signal. An RF power amplifier is an amplifier that converts a low-power radio-frequency signal into a high power signal. An amplifier functions by taking power from a signal source and controlling the output to match the input signal shape but with a larger amplitude. For typical RF (radio frequency) and MW (microwave) applications, amplifiers are used to increase the signal-to-noise ratio in the measurement system so that accurate measurements can be made on the signal when it’s close to the noise floor or to boost the output power of a signal to be broadcasted from an antenna.
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