Angular displacement and velocity sensors based on electric-LC (ELC) loaded microstrip lines

Jordi Naqui, Ferran Martín

Research output: Contribution to journalArticleResearchpeer-review

99 Citations (Scopus)


Planar microwave angular displacement and angular velocity sensors implemented in microstrip technology are proposed. The transducer element is a circularly shaped divider/combiner, whereas the sensing element is an electric-LC resonator, attached to the rotating object and magnetically coupled to the circular (active) region of the transducer. The angular variables are measured by inspection of the transmission characteristics, which are modulated by the magnetic coupling between the resonator and the divider/combiner. The degree of coupling is hence sensitive to the angular position of the resonator. As compared with coplanar waveguide angular displacement and velocity sensors, the proposed microstrip sensors do not require air bridges, and the ground plane provides backside isolation. © 2001-2012 IEEE.
Original languageEnglish
Article number6690140
Pages (from-to)939-940
JournalIEEE Sensors Journal
Issue number4
Publication statusPublished - 1 Apr 2014


  • Angular sensors
  • microstrip technology
  • microwave sensors
  • rotation speed sensors


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