Design and Research of Wireless Passive High-Temperature Sensor Based on SIW Resonance.

The temperature of advanced components in aviation and aerospace fields is difficult to obtain timely. In this study, we aimed to investigate microwave backscattering technology combined with the theory of substrate integrated waveguide and resonant cavity to design a wireless passive temperature sensor and explore its potential in this field. We employed silicon carbide and aluminum ceramic as the substrate to make sensors.

CSRR-SICW High Sensitivity High Temperature Sensor Based on SiN Ceramics.

A new type of wireless passive, high sensitivity, high temperature sensor was designed to meet the real-time temperature test in the harsh aero-engine environment. The sensor consists of a complementary split ring resonator and a substrate integrated circular waveguide (CSRR-SICW) structure and is based on high temperature resistant SiN ceramic as the substrate material. Temperature is measured by real-time monitoring of the resonant frequency of the sensor.

A MoS₂ Nanoflakes-Based LC Wireless Passive Humidity Sensor.

In this study, an LC wireless passive humidity sensor based on MoS₂ nanoflakes was proposed. The LC wireless passive humidity sensor was optimized by performing HFSS simulations and fabricated via a screen-printing technique. The MoS₂ nanoflakes were characterized by laser scanning confocal microcopy, scanning electron microscope, and X-ray diffraction.

Slot Antenna Integrated Re-Entrant Resonator Based Wireless Pressure Sensor for High-Temperature Applications.

The highly sensitive pressure sensor presented in this paper aims at wireless passive sensing in a high temperature environment by using microwave backscattering technology. The structure of the re-entrant resonator was analyzed and optimized using theoretical calculation, software simulation, and its equivalent lump circuit model was first modified by us. Micro-machining and high-temperature co-fired ceramic (HTCC) process technologies were applied to fabricate the sensor, solving the common problem of cavity sealing during the air pressure loading test.