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Broadband beam‐steering reconfigurable antenna
Author(s) -
Li Zhouyuan,
Bahceci Israfil,
Cetiner Bedri A.
Publication year - 2017
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.30223
Subject(s) - beam steering , optics , bandwidth (computing) , reconfigurable antenna , broadband , pin diode , antenna array , radiation pattern , reconfigurability , optoelectronics , antenna (radio) , beam (structure) , materials science , electrical engineering , physics , engineering , diode , coaxial antenna , telecommunications
A broadband reconfigurable antenna (RA) capable of steering its main beam into three different directions is presented. The ∼15% bandwidth of the antenna covers the frequency range of ∼5.1 – 5.9 GHz compatible with IEEE 802.11ac standard. This RA consists of an aperture‐coupled stacked patch with a parasitic layer placed above it. The surface of the parasitic layer has a grid of 3 × 2 electrically small rectangular‐shaped metallic pixels. The pixels are connected/disconnected by means of switching resulting in reconfigurability in beam‐direction. Only two PIN diode switches are utilized to provide three beam‐steering directions yielding a simple RA. The simulations and measurements from fabricated prototypes show that the antenna maintains its beam‐steering capability with a flat maximum realized gain (∼6.5 dB) over the whole operational bandwidth. An RA Array (RAA) formed by the linear combination of four (4 × 1) identical RA elements is also designed, fabricated and measured. Despite being linear this RAA is capable of performing beam‐steering in the plane, which is perpendicular to the plane containing the central line of the array. The measured and simulated results agree well indicating a flat maximum realized array gain of ∼12.2 dB from 5.2 to 5.8 GHz. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:63–65, 2017