# Multi Mode (Reflection and Transmission) Operated Dielectric Resonator based Displacement Sensor

## TL;DR

This paper introduces a dielectric resonator displacement sensor that operates in multiple modes, utilizing reflection and transmission parameters to detect displacement with validated numerical and experimental results.

## Contribution

It presents a novel multi mode dielectric resonator sensor that combines reflection and transmission modes for displacement measurement, validated through simulation and prototype testing.

## Key findings

- HFSS and VNA responses agree well
- Multi mode operation enhances displacement sensitivity
- Prototype demonstrates practical feasibility

## Abstract

The authors propose a multi mode operated dielectric resonator based displacement sensor. A cylindrical dielectric resonator is coupled to two 50 ohm microstrip lines to enable the multi mode operating feature. The parameters like S11 in reflection mode and S21 in transmission mode are sensitive to DR displacements w.r.to transmission lines. The HFSS is carried out for numerical analysis and the fabricated sensor prototype is realized with VNA measurement. Both the HFSS and VNA responses are in good agreement with each other for this multi mode operation. This reveals the selection of mode freedom to the choice of operation.

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Source: https://tomesphere.com/paper/2302.13779