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This paper describes a linear, high efficient, high power push-pull GaN amplifier in the VHF-UHF band. This PA shows an efficiency of 60–55% from 10 MHz to 650 MHz, for an output power of 100W and a compressed gain of 19,5 +/-1.5 dB. By reducing the drain voltage to 30V, the efficiency is 70-60 with an output power of 47 dBm and a power gain of 18,5 +/-1.5 dB. Moreover, the measured EVM is less than...
This paper describes a linear, high efficient, high power push-pull GaN amplifier in the VHF-UHF band. This PA shows an efficiency of 60–55% from 10 MHz to 650 MHz, for an output power of 100W and a compressed gain of 19,5 +/−1.5 dB. By reducing the drain voltage to 30V, the efficiency is 70–60 with an output power of 47 dBm and a power gain of 18,5 +/−1.5 dB. Moreover, the measured EVM is less than...
Classic linearization of a radiofrequency (RF) Power Amplifier (PA) is based on measuring its response to a representative test signal in order to extract pre-distortion parameters. Characterizing an RF PA under 3GPP Long Term Evolution (LTE) RF signals requires high speed data acquisition instruments and customized algorithms to estimate its response. In this work, a PA linearization method using...
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