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100_W_PEP_420_450_MHz_PUSH_PULL_LINEAR_AMPLIFIER

2017-03-19 19:19  
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100_W_PEP_420_450_MHz_PUSH_PULL_LINEAR_AMPLIFIER
This 100 watt linear amplifier may be constructed using two MRF309 transistors in push-pull, requiring only 16 watts drive from 420 to 450 MHz. Operating from a 28 volt supply, eight dB of power gain is achieved alongwithexcellent practical performance featuring: maximum input SWR of 2:1, har-monic suppression more than-63 dB below 100 watts output, efficiency greater than 40%, circuit stability with a 3:1 collector mismatch at all phase angles.