References

[1]CHENG Y,GAO F,HANIF A,et al.Development of a capacitive sensor for concrete structure health monitoring[J].Construction and Building Materials,2017,149:659-668.

[2]TOORES M A,RUIZ S E.Structural reliability evaluation considering capacity degradation over time[J].Engineering Structures,2007,29(9):2183-2192.

[3]YI X H,WU T,WANG Y,et al.Passive wireless smart-skin sensor using RFID-based folded patch antennas[J].International Journal of Smart and Nano Materials,2011,2(1):22-38.

[4]MOHAMMAD I,GOWDA V R,ZHAI H,et al.Detecting crack orientation using patch antenna sensors[C]//Proceedings of SPIE,2011.

[5]MOHAMMAD I,HUANG H Y.Shear sensing based on a microstrip patch antenna[J].Measurement Science and Technology,2012,23(10):105705.

[6]TCHAFA F M,HUANG H.Microstrip patch antenna for simultaneous strain and temperature sensing[J].Smart Materials and Structures,2018,27(6):065019.

[7]XUE S,YI Z,XIE L,et al.A displacement sensor based on a normal mode helical antenna[J].Sensors,2019,19(17).

[8]XUE S,XU K,XIE L,et al.Crack sensor based on patch antenna fed by capacitive microstrip lines[J].Smart Materials and Structures,2019,28:085012.

[9]XUE S,YI Z,XIE L,et al.A Passive Wireless Crack Sensor Based on Patch Antenna with Overlapping Sub-Patch[J].Sensors,2019,19(19):4327.