Compact SPICE model for TeraFET resonant detectors

TL;DR

This paper introduces an advanced compact SPICE model for TeraFETs that captures non-uniform carrier oscillations and inertia effects, validated against experimental and simulation data for improved THz response prediction.

Contribution

The paper develops a nonlinear transmission line-based compact model for TeraFETs that accounts for non-uniform channel effects, enhancing accuracy over existing models.

Findings

Model accurately predicts THz response matching experimental data.

Compared favorably with MOSA1, EKV models, and simulations.

Improves understanding of TeraFET behavior at terahertz frequencies.

Abstract

This paper presents an improved compact model for TeraFETs employing a nonlinear transmission line approach to describe the non-uniform carrier density oscillations and electron inertia effects in the TeraFET channels. By calculating the equivalent components for each segment of the channel: conductance, capacitance, and inductance, based on the voltages at the segment's nodes, our model accommodates non-uniform variations along the channel. We validate the efficacy of this approach by comparing terahertz (THz) response simulations with experimental data and MOSA1, EKV TeraFET SPICE models, analytical theories, and Multiphysics simulations.