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Related Experiment Video

Updated: May 22, 2025

Method for Simultaneous fMRI/EEG Data Collection during a Focused Attention Suggestion for Differential Thermal Sensation

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Published on: January 5, 2014

Temperature sensor with adjustable frequency band integrated with antenna and perception.

Xiangxiang Zhang¹, Yulong Hou¹, Rui Feng¹

¹Key Laboratory of Micro/nano Devices and Systems, Ministry of Education, North University of China, Taiyuan, 030051, China.

Scientific Reports

|March 14, 2025

Summary

This study presents a dual-band microstrip patch antenna sensor with a complementary split ring resonator (CSRR) for precise, real-time temperature monitoring. The sensor demonstrates high sensitivity and stability for industrial applications.

Keywords:

Bridge–shaped defect CSRR Dual–band Microstrip patch antenna Temperature sensor

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Area of Science:

Electrical Engineering
Materials Science
Sensor Technology

Background:

Microstrip patch antennas offer frequency stability suitable for industrial applications.
Integrating complementary split ring resonators (CSRRs) enhances sensitivity to dielectric changes and enables dual-resonance.
Real-time temperature sensing requires robust antenna designs with tunable frequency bands.

Purpose of the Study:

To design and fabricate a dual-band microstrip patch antenna sensor for accurate, real-time temperature detection.
To investigate the impact of CSRR structural parameters on sensor performance and frequency tuning.
To evaluate the sensor's sensitivity, stability, and repeatability across a wide temperature range.

Main Methods:

A low-profile CSRR structure was integrated into a microstrip patch antenna.
Alumina ceramic substrate and screen printing with high-temperature sintering were used for fabrication.
Antenna parameters and resonant frequencies were optimized through simulation and experimental testing.
Temperature-dependent performance was analyzed by monitoring S11 curve shifts from 25°C to 350°C.

Main Results:

The fabricated sensor exhibited dual resonant frequencies at 2.50 GHz and 3.24 GHz.
A linear shift in the S11 curve was observed with temperature increase.
The sensor achieved a maximum sensitivity of 183 kHz/°C with a notch depth of -42 dB and a quality factor of 1413.
Excellent stability and repeatability were confirmed in experimental tests.

Conclusions:

The developed dual-band microstrip patch antenna sensor effectively measures temperature in real-time.
The CSRR integration provides controllable tuning and enhances sensing capabilities.
The sensor meets practical requirements for multi-band temperature testing in various industrial fields.