Global analysis for a surface wave mode HFET amplifier module at 60 GHz by EM-device co-simulation

2007 European Microwave Integrated Circuit Conference Pub Date : 2007-12-26 DOI:10.1109/EMICC.2007.4412678

R. Ishikawa, K. Honjo, M. Nakajima

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引用次数: 4

Abstract

A global analysis for a millimeter-wave amplifier module with surface wave mode transmission lines has been demonstrated. The analysis method is a co-simulation between an FDTD-based electromagnetic simulator and a semiconductor device simulator. Using this method, it is possible to consider various electromagnetic coupling between transmission lines and active devices with nonlinear characteristics. Furthermore, a semiconductor device simulation is more accurate than an approximation to a large-signal equivalent circuit. The incorporated simulation was demonstrated for a millimeter-wave amplifier module which consists of an HFET and planar dielectric transmission lines (PDTL) at 60-GHz region. The PDTL with a surface wave transmission mode has a low-loss transmission characteristic at millimeter-wave region using a low-loss ceramic substrate. However, the transmission wave on the PDTL tends to be scattered by discontinuity structures and impedance mismatching. Furthermore, it is predicted that reflected scattered waves at edges of the substrate interfere the PDTL and transistors mounted on the PDTL. Using the co-simulation technique, influence of the scattering waves was investigated in detail for the amplifier module.

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基于EM-device联合仿真的60 GHz表面波模式HFET放大器模块全局分析

对具有表面波模式传输线的毫米波放大器模块进行了全局分析。分析方法是基于fdtd的电磁模拟器与半导体器件模拟器的联合仿真。利用该方法，可以考虑传输线与具有非线性特性的有源器件之间的各种电磁耦合。此外，半导体器件的模拟比大信号等效电路的近似更精确。对60 ghz区域由HFET和平面介质传输线(PDTL)组成的毫米波放大器模块进行了集成仿真。采用低损耗陶瓷衬底的表面波传输方式的PDTL在毫米波区域具有低损耗传输特性。然而，由于结构不连续和阻抗失配，传输波在PDTL上容易发生散射。此外，还预测了衬底边缘反射的散射波会干扰PDTL和安装在PDTL上的晶体管。利用联合仿真技术，详细研究了散射波对放大模块的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2007 European Microwave Integrated Circuit Conference

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