Advantages of semiconductor device simulator combining electromagnetic and electron transport models

S. M Sohel Imtiaz, Samir M. El-Ghazaly, Robert O. Grondin

    Research output: Contribution to journalArticlepeer-review


    Physical simulation of semiconductor devices at high frequencies involves not only semiconductor transport issues but also electromagnetic wave propagation issues. In order to obtain the nonlinear and the large-signal characteristics of the semiconductor devices, an electromagnetic model should replace the traditional quasi-static model in the device simulator. In this paper, the advantages of a semiconductor device simulator combining an electromagnetic and an electron transport models are presented. This study is based on a semiconductor device simulator that couples a semiconductor model to the 3D time-domain solution of Maxwell's equations. The electromagnetic wave propagation effects on the millimeter-wave FETs are thoroughly analyzed. The use of the electromagnetic model over the conventional quasi-static model provides the actual device response at high frequencies. It also shows the nonlinear energy build-up along the device width whereas the quasi-static model provides a linear increase of energy. The combined model is capable of predicting the device nonlinearity and harmonic distortion of amplifier circuits at large signal.

    Original languageEnglish (US)
    Pages (from-to)495-500
    Number of pages6
    JournalVLSI Design
    Issue number1-4
    StatePublished - 1998


    • Device simulation
    • FDTD
    • Full-wave simulators
    • Hydrodynamic models

    ASJC Scopus subject areas

    • Hardware and Architecture
    • Computer Graphics and Computer-Aided Design
    • Electrical and Electronic Engineering


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