Open AccessWireless electric current sensing via integrating a magnetic–piezoelectric cantilever with a microstrip antenna
Author(s) -
Cao Xi,
Tian XiaoJian,
Wang Dong F.
Publication year - 2017
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2017.0437
Subject(s) - microstrip antenna , antenna (radio) , electrical engineering , microstrip , patch antenna , cantilever , wireless , voltage , electronic engineering , materials science , acoustics , engineering , physics , telecommunications , composite material
This work for the first time presents a wireless electric current sensor via integrating a magnetic–piezoelectric cantilever and a trapezoidal‐structured microstrip antenna. The wireless current sensor system, consisting of both the magnetic–piezoelectric cantilever for measuring electric currents and the trapezoidal‐structured microstrip antenna for transmitting output voltages, are designed and integrated for demonstration, at an operating frequency of 3 GHz with the lowest return loss. Although output errors of 2–7% are observed for output voltage range of 88–116 mV, the signal transmission measurement demonstrates that the proposed integration is experimentally feasible and effective. Owing to the ultra‐wideband (2–11 GHz) and low‐power consumption of the integrated microstrip antenna, the proposed integration is expected to be applicable to various kinds of wireless sensor nodes of different frequencies or multi‐sensors monitoring systems.