Dynamic transient response measurement method for parity-time-symmetric LC telemetry sensors

Chi Zhang, Jie Li, Jianhui Wu, Haobin Wang, Kaihang Zhang, Haoze Kuang, Jinkai Chen, Hao Jin*, Shurong Dong, Yongqing (Richard) Fu, Jikui Luo*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Parity-time symmetry concept has been utilized to develop high precision LC passive wireless sensors. However, they often use the traditional frequency sweeping method for measurements, thus the measurement precision and speed are strongly influenced by the performance of the frequency domain analysis instrument. To solve this issue, herein we proposed a time domain measurement method and extracted sensing information from the transient response signals of the reader. Its measurement speed was much faster than that using the frequency domain analysis instrument. A distance sensing system was developed to demonstrate the feasibility of the new method. It showed a resolution of less than 300 nm for detections of centimeter range, and the measurement time was as short as 100 μs, which was at least 1000 times faster than that using the traditional method. This technology can be explored as an innovative strategy for LC passive telemetry sensing.
Original languageEnglish
Article number075107
Number of pages11
JournalMeasurement Science and Technology
Issue number7
Early online date15 Apr 2024
Publication statusPublished - 24 Apr 2024

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