SIW‐fed Vivaldi antenna with beam steering capabilities

Abstract

A tapered slot antenna element capable of reconfiguring its beam direction is presented. As the basic element, a Vivaldi antenna fed by a substrate integrated waveguide is chosen. The Vivaldi antenna is complemented by a parasitic planar array of small metallic patches placed in front of its aperture and by corrugated edges of the Vivaldi antenna's arms to provide reconfiguration capabilities. The proposed antenna's beam can be steered in five directions by configuring the interconnections of the parasitic patches and by activation/deactivation of the corrugated edges in the antenna arms. The antenna steers the radiation beam over ±30° in E plane and operates in the frequency band of 6.0–6.5 GHz. The measured gain at 6.25 GHz for 0°, ±15°, and ±30° beam direction of the antenna with ideal switches, is 8.4 dBi, 7.5 dBi, and 6.7 dBi, respectively. © 2017 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:1022–1027, 2017

Beam‐tilting antenna with low profile and increased gain for 5G mobile applications

“…Borhani et al described a double‐layer FSS unit cell array with a Vivaldi antenna that improved beam tilt and gain at 28 GHz 12 . To deflect the beam and increase gain, a Vivaldi antenna fed with SIW is proposed in Puskley et al, 13 but it requires a large area of 1.45 λ 0 × 3.11 λ 0 = 4.511 λ 0 2 at 6.25 GHz. Dale Ake et al proposed a V‐shape ground structure with an asymmetric half bowtie antenna to achieve beam tilt.…”