A 2 watt, 8-14 GHz HBT power MMIC with 20 dB gain and <40% power-added efficiency

Design Considerations for High Efficiency GaAs HBT MMIC Power Amplifiers

“…recent years [5][6][7][8][9][10][11][12][13]. HBT power amplifiers exhibiting PAE in excess of 38% over 6-18 GHz band [14], 40% over [8][9][10][11][12][13][14] [15,16], 58% over 5-10 GHz band [17], and output power over 12 Watts in the X-Band [18] have been reported. 'As a consequence of these impressive results, HBTs are currently btin considered as replacements for MESFETs in the next generation solid state power amplifiers requiring increased efficiency and power output.…”