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Related Experiment Video

Updated: Dec 10, 2025

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

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Long-Range Displacement Meters Based on Chipped Circular Patch Antenna.

Songtao Xue^1,2, Kang Jiang¹, Shuai Guan¹

¹Department of Disaster Mitigation for Structures, Tongji University, Shanghai 200092, China.

Sensors (Basel, Switzerland)

|September 3, 2020

Summary

This summary is machine-generated.

This study introduces a novel passive wireless displacement sensor using a circular patch antenna. Its design allows for customizable long-range detection, avoiding antenna stress damage.

Keywords:

circular patch antenna displacement sensor resonant frequency sloping channel

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Area of Science:

Electrical Engineering
Electromagnetics
Sensor Technology

Background:

Traditional displacement sensors can be prone to stress damage from deformation.
Passive wireless sensors offer advantages in remote monitoring applications.

Purpose of the Study:

To develop a passive wireless long-range displacement sensor with a customizable detection range.
To design a sensor that mitigates stress damage to the antenna through its mechanical configuration.

Main Methods:

A sensor design utilizing a chipped circular antenna sliding along a sloping channel on a ground plate.
Electromagnetic simulation using Ansoft High Frequency Structure Simulator (HFSS) to analyze antenna performance.
Fabrication and experimental validation of three prototype sensors with varying ranges.

Main Results:

Simulations demonstrated a linear relationship between antenna resonant frequency and channel depth.
Experimental results confirmed the sensor's sensitivity is adjustable.
The proposed sensor successfully measured long-range displacement without inducing stress damage.

Conclusions:

The passive wireless displacement sensor based on a circular patch antenna is effective for long-range measurements.
The sensor's design allows for adjustable sensitivity and customizable detection ranges.
This technology offers a robust solution for displacement monitoring in demanding environments.