# Compact SPICE Model for TeraFET Resonant Detectors

## TL;DR

This paper introduces a new compact model for TeraFETs that better captures channel behavior for terahertz applications.

## Contribution

A novel nonlinear transmission line-based compact model for TeraFETs that accounts for non-uniform carrier density and electron inertia.

## Key findings

- The model accurately simulates THz responses by incorporating non-uniform channel effects.
- Validation shows improved agreement with experimental data compared to existing SPICE models and simulations.

## 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 and EKV TeraFET SPICE models, analytical theories, and Multiphysics simulations.