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A 238 GHz, 0.5 W, 2.3 mm2 InP HBT Power Amplifier with Cascade Topology and 4:1 Series Power Combining Technique
- Author(s): Yu, Hai
- Advisor(s): Rodwell, Mark
- et al.
Abstract
This work demonstrates the design of a MMIC solid state class-A power amplifier in 250nm InP HBT technology achieving 0.5W saturated output power at 238 GHz at compressed gain of 14dB and power added efficiency of 10%. The 3dB bandwidth is 230 GHz to 242GHz. The power amplifier uses 4:1 travelling wave combiner to combine the output power of 8 power cells. Each power cell is a 3-stage cascaded amplifier with 2 common-base gain stage and 1 common emitter power stage.
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