Twenty‐eight‐gigahertz beam‐switching ridge gap dielectric resonator antenna based on FSS for 5G applications

Abstract

A new design of the double dielectric resonator antenna (DRA) fed by a printed ridge gap waveguide for beam‐switching applications based on frequency selective surfaces (FSSs) is presented here. The dual‐sided printed FSS element works in its reflection mode and comprises a slotted square C‐shaped patch on the top layer and a square strip on the back plane. Therefore, the beam switching can be implemented by loading the proposed FSS array over and in the middle of DRAs. Loading the antenna with two layers of 3 × 3 FSS unit cells results in ±77° beam switching and a 3.16 dBi gain enhancement at 28 GHz. Simulation and measurements confirm the operation of the proposed antenna, with good matching and gain observed.

Four-Port 38 GHz MIMO Antenna with High Gain and Isolation for 5G Wireless Networks

“…Gain enhancement can be accomplished by utilizing several techniques such as employing array configuration [ 18 , 19 , 20 ], an artificial magnetic conductor (AMC) [ 21 , 22 , 23 ], and an appropriately constructed FSS reflector to create an in-phase reflection throughout the full bandwidth [ 24 , 25 , 26 , 27 , 28 , 29 ]. In [ 18 ], a compact 1 × 4 broadband dual-polarized (DP) array is presented with end-fire radiation and with enhanced gain from 4 dBi to 7.1 dBi.…”

“…In [ 24 ], the use of a 2D transmission FSS structure to improve the gain to 10.3 dB is discussed. In [ 25 ], a novel design of a double dielectric resonator antenna (DRA) with a gain enhancement of 3.16 dBi is achieved by using FSS. In [ 26 ], four ports circular polarization (CP) antenna are proposed for a 30 GHz MIMO system with an FSS superstrate to enhance the gain by around 1.5 dBi.…”