Design, Simulation and Fabrication of a Wide Bandwidth Envelope Tracking Power Amplifier
Keywords:
Envelope amplifier, envelope elimination and restoration, power amplifierAbstract
In this paper an envelope tracking power amplifier is designed and implemented using MRF6S27015N MOTOROLA transistor in LDMOS technology. First, the amplifier is designed using load pull simulation and its parameters are optimized to increase the power added efficiency. Next, envelope detector and envelope amplifier are designed and simulated and finally ET is applied to the amplifier which results in more than 50% of PAE in a wide range of input power with bandwidth of 200 MHz. Envelope detector circuit is fabricated using schotkey diode and envelope amplifier is manufactured using a mosfet, an op amp, and a comparator.
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