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Design of Double-Layer Electrically Extremely Small-Size Displacement Sensor.

Yi-Dong Wang¹, Feng-Yuan Han¹, Jin Zhao¹

¹Department of Electronics, Peking University, Beijing 100871, China.

Sensors (Basel, Switzerland)

|July 24, 2021

Summary

This summary is machine-generated.

This study introduces a compact metamaterial displacement sensor using coupled split-ring resonators (SRRs). The novel design achieves high sensitivity and a small footprint for precision industrial measurements.

Keywords:

displacement measurement electrical small size metamaterials microwave sensors mutual coupling

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Area of Science:

Metamaterials
Microwave Engineering
Sensor Technology

Background:

Traditional displacement sensors often face limitations in size and sensitivity.
Metamaterials offer unique electromagnetic properties for advanced sensor design.

Purpose of the Study:

To propose a novel, extremely small, and highly sensitive displacement sensor.
To leverage metamaterial elements for enhanced sensing capabilities.

Main Methods:

Design of a metamaterial element using coupled split-ring resonators (SRRs).
Integration of a feeding structure with a rectangular opening loop and a double-layer coupled SRR sensing structure.
Adjustment of resonator split gap position to control detection directions (x- or y-axis).

Main Results:

Achieved an extremely compact sensor size of 0.05λ₀ × 0.05λ₀.
Demonstrated high sensitivity and a high quality factor (Q-factor).
Enabled multi-directional displacement detection without increasing physical dimensions.

Conclusions:

The proposed metamaterial displacement sensor offers significant size reduction and high performance.
The sensor's capabilities make it suitable for high-precision industrial measurement applications.