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A wideband Gallium Nitride (GaN) HEMT power amplifier (PA) achieving 7.6W output power over 1.1 GHz bandwidth at fo = 2.75 GHz is presented. A systematic design and synthesis of wideband low-pass matching networks realizing optimal fundamental impedance is applied. These techniques have produced amplifiers with increased output power, efficiency and very large fractional bandwidth. Additionally, the...
A 11W high power amplifier for millimeter wave application is reported in this paper. The monolithic three-stage amplifier has been realized using a 0.15 um T-gate field plated AlGaN/GaN high electron mobility transistors (HEMTs) in a microstrip transmission line technology on 3-inch SiC substrate. Saturated output power of 40.5dBm and peak power-added-efficiency of 20% were measured at 29GHz with...
A class B and a class F power amplifier are described using a GaN HEMT device. They both were designed to operate at a frequency of 1.7 GHz with the same bias conditions. The performances of each amplifier were successfully simulated and compared. A class B amplifier was physically implemented and achieved a high power-added-efficiency of 69.2%, 39.9 dBm output power and associated gain of 14.9 dB...
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