A miniaturized evanescent mode HMSIW humidity sensor

作者：Chen, Chang-Ming^*; Xu, Jun

来源：International Journal of Microwave and Wireless Technologies, 2018, 10(1): 87-91.

DOI：10.1017/S175907871700126X

• Half-mode substrate integrated waveguide (HMSIW)
• Complementary split ring resonator (CSRR)
• Humidity sensor

A passive evanescent mode half-mode substrate integrated waveguide (HMSIW) resonator loaded with a complementary split ring resonator (CSRR) is designed and fabricated for humidity sensing applications. The use of the CSRR which is etched on the top plane of the HMSIW can significantly reduce the size of the device. Without any sensing material the sensor which has a compact size of 0.17 lambda(g) x 0.17 lambda(g) can provide high humidity sensitivity up to 5.82 MHz/%relative humidity (RH) at high RH region (> 84.3%). The results indicate that the proposed structure is a promising candidate for radio and microwave humidity sensing applications.

• 出版日期2018-2
• 单位电子科技大学