Talk:Valve RF amplifier
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[edit] Doherty amplifier
This article should mention the Doherty linear amplifier, one of the most significant historic high-power RF amplifier designs (U.S. patent granted in 1940, and related circuits are still being patented today). A related design was the basis for most high-power AM transmitter designs since the late 1950s. 18.26.0.5 19:54, 25 May 2007 (UTC)