MOSFET Linear Amplifier 300W/50MHz

This MOSFET RF Linear Amplifier has capability to deliver up to 300W for 50MHz. The circuit built based the couple of MOSFET ARF448A and ARF448A.

Circuit Design:

Parts List:

It will be the very first recognized class AB application in the ARF448 components. Till now the only other linear application is inside a pulsed-mode linear amplifier for magnetic resonance imaging. The SSB overall performance was encouraging given that these devices have been created to serve the ISM plasma generation marketplace and no interest to linear efficiency was offered in their product. The IMD overall performance with 200mA of quiescent bias was much better than anticipated. The amplifier was tested with as much as .5A of Idq. Whilst the IMD efficiency improves somewhat, the efficiency degrades significantly

PCB Layout:

Component Placement:

Download the MOSFET Linear Amplifier 300W/50MHz application notes:
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The application note will explain all about this MOSFET RF amplifier.