A few basic questions about Power Amplifier theory - RF Cafe Forums
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Post subject: Feedforward Linearisaton Posted: Mon Jun 12, 2006 10:06 am
Joined: Mon Jun 12, 2006 9:53 am
I wold like to know whether Feedforward linearisation can be implemented without a variable gain and phaseshift mechanism.(completely in RF, without anydigital processing or microcontrollers).
Post subject: Feedforward LinearizationPosted: Mon Jun 12, 2006 7:06 pm
Joined: Wed Feb 22, 2006 3:51 pm
As a general statement, whether or not you need adaptive circuitry for feedforward linearization depends on how stable (in a general sense, not "will it oscillate?") your design is. If parameters change with time, adaptivity is critical - because feedforward depends on cancellation of distortion products, delay and amplitude control is critical.