A wideband millimeter‐wave antenna based on quasi‐Yagi antenna with MIMO circular array antenna beamforming for 5G wireless networks

Abstract

In this letter, a wideband printed antenna and its arrays for 5G wireless cellular systems have been proposed. The proposed antenna is like the Yagi‐Uda antenna which fed by an optimized microstrip line. The single antennas have two kinds of bandwidth. In broadband case, it has |S11| < −10 dB with an impedance bandwidth of 47% (24.8‐40 GHz) and a range gain of 6.3‐8.9 dBi. In multiband case, it covers two licensed bandwidths for 5G systems (27‐29 GHz and 36‐40 GHz) and a range gain of 7.2‐7.9 dBi. Furthermore, by optimizing the constructive interference between the patches and the aperture, a relatively high antenna gain even with a wide beamforming across an azimuthal plane with the merits of the average gain equal 10.5 dBi could be obtained. The measurement results showed that the proposed antenna and array antenna have stable radiation patterns, low cross‐polarization, and high gain, exhibiting potential use for the applications of 5G wireless communication systems.

Compact Bent-Corner Orthogonal Beam Switching Antenna Module for 5G Mobile Devices

“…2. The 3D patterns prove that a typical phased array system would suffer from scanning loss up to 3 dB if the beam were formed at 45º; beyond this angular scan, the patterns become unusable, as observed in [10,11,[13][14][15][16][17]. If the beam integrity were compromised, the phased array would fail to operate when excited for orthogonal beams, which is a requirement for the use case in consideration, as per Fig.…”

“…It would be a challenge to accommodate 5G antennas with 4G antennas to support backward compatibility in this restricted space on a mobile device [6][7][8]. Several topologies for 5G smartphones have been reported in recent years [9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Only a few antenna designs operating in the 28 GHz band are compliant with commercial smartphone dimensions [6,8,9,13] but these designs are not corner bent.…”

A Novel Fractal Arrow-Shaped Mmwave Flexible Antenna for Iot and 5g Communication Systems

“…The new applications of the fifth generation of mobile communication (5G) need a higher data rate, lower latency, and smaller size [1][2][3]. The available sub-6 GHz bandwidth (BW) is incapable to fulfill these demands [4]. Furthermore, 5G devices should have a small size.…”

“…The vacant bandwidth of the millimeter wave (mmWave) spectrum seems to be capable to provide adequate bandwidth for 5G applications [5][6][7]. In addition, due to the small wave number of this spectrum, mmWave devices have a small size [4]. Different frequency bands are licensed for 5G applications [6].…”

A miniaturized quasi‐Yagi antenna using defected ground structure and double dog‐bone driver

“…However, the quasi‐Yagi antennas are relatively large in terms of their electrical size. Most of the work in the literature has been devoted to bandwidth 4–8 and gain enhancement of the conventional quasi‐Yagi antennas 9–13 …”