Rhombus-Inscribed Circular Ring Fractal Array Antenna for Millimeter-Wave 5G Applications

Abstract

A 1 × 4 planar fractal array antenna is designed and presented for millimeter-wave 5G applications. The array’s top side is made up of a rhombus-inscribed circular ring fractal patch radiator, while the backside is made up of a square notch-loaded partial ground plane. To achieve high gain, a 1 × 4 corporate feeding network is used to excite the array elements. The designed array has an overall size of 28 × 17.75 mm2. From simulations as well as experimental results, it is observed that the designed array offers a wide impedance bandwidth in the frequency range of 22.8–29.2 GHz. Furthermore, a peak gain of 10.7 dBi with a radiation efficiency of > 95% is observed in the operating bandwidth.

An elliptical dual-band antenna with crescent slot for 5G mmWave applications

“…Although the broadband of this antenna is more conducive to data rates, it introduces unlicensed mmWave bands, which cause interference to communications. Similarly, various novel antenna elements and gain-enhanced four-element line arrays for the future 5G mmWave band are proposed [2][3][4][5] . However, the above literature only relates to a particular band for future 5G mmWave applications, e.g., the 28 GHz band.…”

An Ultra-Wide Band MIMO Antenna System with Enhanced Isolation for Microwave Imaging Applications

“…In the literature, several UWB MIMO systems have been proposed [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ]. These UWB MIMO systems comprise different isolation enhancement techniques, including defected ground structure [DGS] [ 8 , 9 , 10 ], meander line resonators [MLs] [ 11 , 12 ], electromagnetic bandgap structures [EBGs] [ 13 , 14 ], shortening pins [SPs] [ 15 ], decoupling structures [DSs] [ 16 ], metamaterials, and different configuration techniques [ 17 , 18 , 19 , 20 ]. In [ 10 ], the authors present a compact (MIMO) antenna system tailored for ultra-wideband (UWB) applications.…”