A Highly Compact Antipodal Vivaldi Antenna Array for 5G Millimeter Wave Applications

Abstract

This paper presents a compact 1 × 4 antipodal Vivaldi antenna (AVA) array for 5G millimeter-wave applications. The designed antenna operates over 24.19 GHz–29.15 GHz and 30.28 GHz–40.47 GHz frequency ranges. The proposed antenna provides a high gain of 8 dBi to 13.2 dBi and the highest gain is obtained at 40.3 GHz. The proposed antenna operates on frequency range-2 (FR2) and covers n257, n258, n260, and n261 frequency bands of 5G communication. The corrugations and RT/Duroid 5880 substrate are used to reduce the antenna size to 24 mm × 28.8 mm × 0.254 mm, which makes the antenna highly compact. Furthermore, the corrugations play an important role in the front-to-back ratio improvement, which further enhances the gain of the antenna. The corporate feeding is optimized meticulously to obtain an enhanced bandwidth and narrow beamwidth. The radiation pattern does not vary over the desired operating frequency range. In addition, the experimental results of the fabricated antenna coincide with the simulated results. The presented antenna design shows a substantial improvement in size, gain, and bandwidth when compared to what has been reported for an AVA with nearly the same size, which makes the proposed antenna one of the best candidates for application in devices that operate in the millimeter frequency range.

Millimeter-Wave Smart Antenna Solutions for URLLC in Industry 4.0 and Beyond

“…Many conventional PCB-based antennas such as microstrip patch, dipole, monopole and slot antennas are reported in the literature [ 81 , 85 , 86 , 92 , 95 , 97 , 120 , 121 ]. Moreover, Vivaldi antennas [ 122 , 123 , 124 ], dielectric resonator antennas [ 120 , 125 , 126 ], fractal antennas [ 127 , 128 , 129 , 130 ], and substrate-integrated waveguide (SIW)-based leaky wave antennas [ 96 , 127 , 131 , 132 , 133 ] are also implemented on PCB technology.…”

The Recent Advancement in Unmanned Aerial Vehicle Tracking Antenna: A Review

“…The low cost, simplicity, and high band operation of Vivaldi antenna has brought about its wide application and usage in many devices [ 76 ]. These antennas are used in radar application and are also used in microwave imaging [ 77 ]. The antenna has received attention as a suitable candidate for emerging technologies, such as 5G [ 78 ], wideband communication using image theory technique [ 79 ] and high-gain antenna using optical lens [ 80 ].…”

A Miniaturized CSRR Loaded 2-Element MIMO Antenna for LTE Band

“…The traditional wireless system uses a single antenna, but it may not provide high gain and wide bandwidth [11,12]. Next, antenna arrays are developed to provide high gain and bandwidth [13][14][15]. The most important advantage of MIMO is that it allows beamforming which reduces signal interference [16].…”