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A compact large signal model of LDMOS

机译:LDMOS的紧凑型大信号模型

摘要

Lateral double-diffused MOSFETs (LDMOS) are becoming more popular in RF power amplifiers for wireless communication applications. The understanding of non-linearity in LDMOS is critical in order to design ultra-linear power amplifiers to meet the stringent needs of current wireless systems. We have developed a compact large signal model that can predict accurately the transconductance of the device and its higher order derivatives. Such large signal model is needed in the accurate simulation of non-linear circuits. Our device measurements show that the higher order derivatives of the transconductance are very sensitive to the gate bias. The model has been applied to simulate the gain and third order intermodulation distortion in a RF LDMOS amplifier, and the simulated results agree well with the experimental measurements.
机译:横向双扩散MOSFET(LDMOS)在用于无线通信应用的RF功率放大器中变得越来越普遍。为了设计超线性功率放大器以满足当前无线系统的严格需求,对LDMOS中非线性的理解至关重要。我们已经开发出一种紧凑的大信号模型,可以准确地预测该设备及其更高阶导数的跨导。在非线性电路的精确仿真中需要这种大信号模型。我们的器件测量结果表明,跨导的高阶导数对栅极偏置非常敏感。该模型已被用于模拟RF LDMOS放大器中的增益和三阶互调失真,并且模拟结果与实验测量结果非常吻合。

著录项

  • 作者

    Tang CW; Tong KY;

  • 作者单位
  • 年度 2002
  • 总页数
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类

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