Rf Transmitting Transistor and Power Amplifier Fundamentals Power Amplifier Design Classes of Operation and Biasing 3.1.1 Class-a


    Class-A operation is characterized by a constant DC collector (or drain) voltage and current. This class of operation is required for linear amplifiers with severe linearity requirements including: – Drivers in SSB transmitters where a 2-tone 3rd-order intermodulation of at least −40 dB is required – Drivers in TV transmitters where the contribution to the… (More)


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