A high efficiency 835 MHz linear power amplifier for digital cellular telephony

The authors describe an approach to linear power amplification for digital cellular telephony which exploits the high efficiency of a class-C amplifier. An average efficiency exceeding 50%, with third-order intermodulation products 30 dB down, has been demonstrated. Low cost, moderate complexity, conventional RF technology was used in the amplifier circuitry. A block diagram of the 835 MHz linear power amplifier is presented.<
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