Open AccessFluidic beam steering in parasitically coupled patch antenna arrays
Author(s) -
Bhattacharjee T.,
Jiang H.,
Behdad N.
Publication year - 2015
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.2015.1908
Subject(s) - beam steering , antenna (radio) , beam (structure) , acoustics , microstrip antenna , antenna array , physics , engineering , computer science , optics , electrical engineering
A technique for designing a parasitic patch antenna array whose beam can be steered dynamically using a fluidic tuning mechanism is presented. Using this technique, a three‐element patch antenna array operating at 5 GHz is designed and fabricated using 3D printing. Two oil‐filled channels are placed in the substrate of the antenna along the radiating edges of the patches and filled with movable metal cylinders and glass balls. The parasitic elements are mutually coupled to the centre element in the H ‐plane. As the train of metal cylinders and glass balls are moved from the left or right with respect to the centre‐driven patch element, the beam is steered towards the opposite direction. The proposed parasitic patch array is able to steer the beam ±22.5° with maintained impedance matching.