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In this paper, a 10 W peak power 2 GHz highly efficient RF pulse width modulation (RF-PWM) based transmitter is presented. RF-PWM signals are generated with a dedicated 65 nm CMOS modulator and subsequently amplified with a GaN Class-E power amplifier (PA). The modulator use extended drain MOS (EDMOS) high voltage transistors to provide the required voltage swing to drive the GaN used as a switch...
The design and performance of a 0.1 to 5 GHz medium power distributed amplifier is described. The circuit is realized using a low-cost GaN-on-silicon MMIC process featuring 0.5 mum gate length GaN HFETs on a 150 mum thick high resistivity silicon substrate. The circuit was designed using a non-linear FET model and standard passive component models. The first pass circuit demonstrates a saturated output...
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