GaAs PHEMT开关模型的研究

Research on GaAs PHEMT Switch Model

论述了GaAs PHEMT开关器件的建模,介绍了利用微波电路设计软件ADS建立GaAs PHEMT 开关模型的方法,给出了模型模拟与器件测量的曲线和模型参数。提取开关模型是研制控制电路的关键, 特别是对于MMIC电路。一种0．5 μm GaAs PHEMT开关器件模型已丌发成功,并集成在ADS环境中, 可为各类开关、衰减器和移相器等微波控制电路提供可靠的器件模型,提高电路设计精度。

The modeling of switching GaAs PHEMT was introduced, and the modeling method by using the microwave circuit design software named ADS was discussed, and the model parameters and the curve of both simulated and measured results were presented. The modeling of switching is the key of design and fabrication for control circuits, especially for MMICs, A 0.5 μ m GaAs PHEMT switch model was developed successfully and input in ADS. This reliable switch model can improve the design precision of microwave control circuits, such as switches, attenuators and phase shifters.