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What is power amplifier5/13/2023 ![]() ![]() ![]() This FAQ will look at the role of the PA and how it is characterized. It is often a single discrete component, one with requirements and parameters which differ from those of much of the transmit chain as well as the receiver circuitry. In the RF signal chain, the power amplifier (PA) is the active element located between the transmitter signal chain circuitry and the antenna, Figure 1.
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