Open AccessBeam‐ and polarisation‐reconfigurable SIW ring‐slot antenna array
Author(s) -
Vasina Petr,
Mikulasek Tomas,
Lacik Jaroslav,
Arthaber Holger
Publication year - 2018
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2018.5192
Subject(s) - reconfigurability , antenna (radio) , optics , reconfigurable antenna , pin diode , slot antenna , impedance matching , antenna measurement , materials science , coaxial antenna , antenna array , optoelectronics , beam waveguide antenna , antenna factor , physics , dipole antenna , electrical impedance , diode , electrical engineering , telecommunications , computer science , engineering
A beam‐ and polarisation‐reconfigurable substrate integrated waveguide (SIW) ring‐slot antenna array is proposed in this study. The 2 × 2 ring‐slot antenna array can generate beams in four different directions in two orthogonal linear polarisations (LPs). This is achieved by a feeding network consisting of four 90 ∘ SIW 3 dB couplers arranged in a multilayer structure for a compact antenna size of 131.6 mm × 65.8 mm × 4.9 mm. The antenna elements’ LP plane is controlled by PIN diodes, switched by a DC bias network integrated on the antenna substrate. The proposed antenna array is designed for the 5.8 GHz industrial, scientific and medical (ISM) frequency band and verified by measurements. Experimental results validate good impedance matching over the entire frequency band as well as the beam and polarisation reconfigurability.