A Nonlinear Drain Resistance Model for a High Power Millimeter-wave PHEMT

  title={A Nonlinear Drain Resistance Model for a High Power Millimeter-wave PHEMT},
  author={Akira Inoue and Hirotaka Amasuga and Shougo Goto and Tetsuo Kunii and M. R. Wong and Jes{\'u}s A Del Alamo and Tomoki Oku and Takahide Ishikawa},
  journal={2006 IEEE MTT-S International Microwave Symposium Digest},
A millimeter wave high power PHEMT model with a nonlinear drain resistance Rd is proposed. The nonlinear Rd arises from electron velocity saturation in the gate-drain gap. At 2.1 GHz, the nonlinear Rd behaves like a conventional linear resistor. However, at Ka band, the nonlinearity of the resistance results in a large power loss. This frequency dependent phenomenon has been experimentally verified in millimeter-wave GaAs PHEMTs. Our proposed simple model accurately describes the power… CONTINUE READING

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