Open AccessTwo‐dimensional displacement and alignment sensor based on reflection coefficients of open microstrip lines loaded with split ring resonators
Author(s) -
Horestani A.K.,
Naqui J.,
Abbott D.,
Fumeaux C.,
Martín F.
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.0572
Subject(s) - split ring resonator , displacement (psychology) , reflection (computer programming) , resonator , metamaterial , acoustics , microstrip , electric power transmission , optics , transmission (telecommunications) , materials science , resonance (particle physics) , physics , computer science , telecommunications , engineering , electrical engineering , psychology , psychotherapist , programming language , particle physics
A two‐dimensional displacement and alignment sensor is proposed based on two open‐ended transmission lines, each loaded with a split ring resonator (SRR). In this arrangement, the depth of resonance‐induced notches in the reflection coefficients can be used to sense a displacement of the loading SRRs in two orthogonal directions. Since the operation principle of the sensor is based on the symmetry properties of SRR‐loaded transmission lines, the proposed sensor benefits from immunity to variations in ambient conditions. More importantly, it is shown that in contrast to previously published metamaterial‐inspired two‐dimensional displacement and alignment sensors, the proposed sensor can be operated at a single fixed frequency. The concept and simulation results are validated through measurement.