ORIGINAL RESEARCH article
Front. Mech. Eng.
Sec. Mechatronics
Improved Design of Passive Wireless Sensor for Ultra-high Temperature Environment and Its Back-end Circuit Measurement System
Provisionally accepted
- Changjiang Polytechnic, Wuhan, China
Select one of your emails
You have multiple emails registered with Frontiers:
Notify me on publication
Please enter your email address:
If you already have an account, please login
You don't have a Frontiers account ? You can register here
Abstract: An improved passive wireless sensor is presented for ultra-high temperature environments, utilizing a folded Complementary Split-Ring Resonator (CSRR) structure. A dedicated back-end circuit measurement system is also developed to support the improved sensor. The sensor design is optimized with an aluminum nitride ceramic substrate and a platinum layer, incorporating distributed compensation to enhance thermal stability. Performance testing showed that: At 1,000 °C, the quality factor was increased from 241 to 418, and the sensitivity was raised from 10.89 to 17.12. The temperature coefficient of frequency was significantly improved from -14.23 ppm/°C to -3.76 ppm/°C, demonstrating superior stability. Measurements showed that the back-end system achieved a mere 0.02 GHz error in resonant frequency compared to a network analyzer, with a total test error below 1%. The proposed sensor effectively minimizes performance degradation at high temperatures, achieving high-accuracy and stable wireless signal detection. This work provides a reliable passive sensing solution for real-time monitoring in ultra-high temperature conditions.
Keywords: Back-end circuit measurement system, CSRR, Passive Wireless Sensors, Temperature stability, Ultra-high temperature environment
Received: 18 Sep 2025; Accepted: 20 Nov 2025.
Copyright: © 2025 Li. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Deming Li, lmd7160@126.com
Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.