A Physical Model-Based FDTD Field-Circuit Co-Simulation Method for Schottky Diode Rectifiers

Hongzheng Zeng,Xin Duan,Yuzhu Tang,Xing Chen

doi:10.1109/access.2019.2926329

Abstract

So far, plenty of microwave power circuits such as microwave diode rectifiers are mainly designed and analyzed by conventional electromagnetic (EM) co-simulation method based on the semiconductor equivalent circuit models. However, the simplified equivalent circuit model may contribute to loss of precision at high frequencies or under high power. Compared with the equivalent circuit model, the semiconductor physical model provides a means for studying the physics of electron transport, and thus, better describes the semiconductor device. This paper explores analyzing microwave diode rectifiers by employing a physical model-based field-circuit co-simulation method. This method combines the physical model-based circuit simulation to the finite-difference time-domain (FDTD)-based field-circuit co-simulation and thus, achieves accurate and effective hybrid full-wave field-circuit co-simulation. For validation, two diode rectifiers working at S- and C-band, respectively, are simulated and analyzed by the proposed method. The simulation result agrees well with measurement and shows higher accuracy than the equivalent circuit model-based simulation.

Highlights

It is well-known that, for RF, microwave, and millimeterwave circuits designing, Electromagnetic (EM) field simulators offer highly accurate results, but this accuracy mostly often comes with slow performance in terms of CPU time and high memory requirements
The results show that the proposed physical model-based field-circuit co-simulation has higher simulation accuracy than ADS
VOLUME 7, 2019 subsystem including a semiconductor is simulated by using the above-mentioned physical model-based circuit method, while the distributed subsystem is simulated by the electromagnetic field finite-difference time-domain (FDTD) method

Summary

Introduction

It is well-known that, for RF, microwave, and millimeterwave circuits designing, Electromagnetic (EM) field simulators offer highly accurate results, but this accuracy mostly often comes with slow performance in terms of CPU time and high memory requirements. INDEX TERMS Microwave rectifier, Schottky diode, physical model, filed-circuit co-simulation. H. Zeng et al.: Physical Model-Based FDTD Field-Circuit Co-Simulation Method for Schottky Diode Rectifiers into circuit simulators.

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Results

Conclusion