scholarly journals Quasi-Yagi Slotted Array Antenna with Fan-Beam Characteristics for 28 GHz 5G Mobile Terminals

2020 ◽  
Vol 10 (21) ◽  
pp. 7686
Author(s):  
Sungpeel Kim ◽  
Jaehoon Choi
Keyword(s):  
Mutual Coupling ◽  
Beam Steering ◽  
Ground Plane ◽  
Array Antenna ◽  
Slot Antenna ◽  
Mobile Terminals ◽  
Beam Radiation ◽  
Steering Mechanism ◽  
Half Power ◽  
Beam Characteristics

A quasi-Yagi slotted array antenna with fan-beam characteristics is proposed for 28 GHz 5G mobile terminals. The antenna is composed of a 1 × 8 slot antenna array with directors to enhance the half-power beamwidth (HPBW). The proposed antenna has a fan-beam radiation pattern with a simulated HPBW of 256.72° and a peak gain of 11.16 dBi. In addition, the proposed antenna covers ±48° using a beam steering mechanism. Mutual coupling reduction is achieved by inserting slits between the adjacent slot radiators on the ground plane. The simulated −10 dB reflection coefficient bandwidth of the proposed antenna is 1.79 GHz (27.03–28.82 GHz), and the mutual coupling between each of the slot radiators is lower than −25.02 dB over the 28 GHz target band (27.5–28.35 GHz). To investigate the effect of a human body in a practical environment, the power density was considered to estimate the electromagnetic exposure with a simplified skin model. The measured results were in good agreement with the simulated ones and demonstrated that the proposed antenna could be used for 5G mobile terminals.

scholarly journals Mitigation of mutual coupling in microstrip antenna arrays

2019 ◽  
pp. 16-24
Author(s):  
K. Prahlada Rao ◽  
R. M. Vani ◽  
P. V. Hunagund
Keyword(s):  
Antenna Arrays ◽  
Mutual Coupling ◽  
Low Cost ◽  
Ground Plane ◽  
Dielectric Substrate ◽  
Array Antenna ◽  
Directional Radiation ◽  
Radiation Properties ◽  
Band Gap Structure ◽  
Microstrip Array Antenna

This article demonstrates the alleviation of mutual coupling of a simple and low-cost four-element microstrip array antenna by loading I-shaped slot-type electromagnetic band gap structure in the ground plane. FR-4 glass epoxy is used as dielectric substrate. Moreover, the proposed array antenna shows a better performance in terms of multi-band resonance. The antenna is resonating at four frequencies and a virtual size reduction of 78.48% is obtained. The designed array antenna possesses directional radiation properties. Mentor Graphics IE3D software is used to design and simulate the designed antennas and the measured results are obtained using vector network analyser.

scholarly journals A Slot Antenna Array With Low Mutual Coupling for Use on Small Mobile Terminals

2011 ◽  
Vol 59 (5) ◽  
pp. 1512-1520 ◽  
Author(s):  
Sema Dumanli ◽  
Chris J. Railton ◽  
Dominique L. Paul
Keyword(s):  
Antenna Array ◽  
Mutual Coupling ◽  
Slot Antenna ◽  
Mobile Terminals

scholarly journals Beam‐steering high‐gain array antenna with FP Bow‐tie slot antenna element for pattern stabilisation

2020 ◽  
Vol 14 (11) ◽  
pp. 1185-1189
Author(s):  
Vahid Rafiei ◽  
Ghader Sharifi ◽  
Saeid Karamzadeh ◽  
Mesut Kartal
Keyword(s):  
Beam Steering ◽  
High Gain ◽  
Array Antenna ◽  
Slot Antenna ◽  
Antenna Element ◽  
Bow Tie

scholarly journals Design of Steered Array Lens Antenna System with Isolation Enhancement

2019 ◽  
Vol 8 (3) ◽  
pp. 4804-4807
Keyword(s):  
Mutual Coupling ◽  
Ring Resonator ◽  
Beam Steering ◽  
Antenna System ◽  
Array Antenna ◽  
Metamaterial Structure ◽  
Split Ring ◽  
Left And Right ◽  
Simulation Results ◽  
Mutual Coupling Reduction

A new compact economical patch array antenna with beam steering ability and mutual coupling reduction between the patches is presented in this article. By incorporating modified hexagonal spilt ring resonator metamaterial structure in one of the 1 X 2 patch array enables the property of beam steering as well as mutual coupling reduction. Similarly, by incorporating modified hexagonal split ring metamaterial structure in both the patch of 1x2 patch array antenna mutual coupling reduction of around 21dB at 2.4GHz without beam steering capability is observed. The spacing of 0.25λo between the patches of an antenna array, around 24 dB lower mutual coupling at the operating frequency is obtained. Both left and right modified patch produces a beam scanning of -200 to +200 respectively. The fabricated prototype antenna results are validated with simulation results using experimental measurements.

scholarly journals Triangular Slot-Loaded Wideband Planar Rectangular Antenna Array for Millimeter-Wave 5G Applications

Electronics ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 778
Author(s):  
Iftikhar Ahmad ◽  
Houjun Sun ◽  
Umair Rafique ◽  
Zhang Yi
Keyword(s):  
Antenna Array ◽  
Millimeter Wave ◽  
Communication Systems ◽  
Ground Plane ◽  
Simulated Data ◽  
Impedance Bandwidth ◽  
Antenna Element ◽  
Single Antenna ◽  
Rectangular Patch ◽  
Half Power

This paper presents a design of a triangular slot-loaded planar rectangular antenna array for wideband millimeter-wave (mm-wave) 5G communication systems. The proposed array realizes an overall size of 35.5 × 14.85 mm2. To excite the array elements, a four-way broadband corporate feeding network was designed and analyzed. The proposed array offered a measured impedance bandwidth in two different frequency ranges, i.e., from 23 to 24.6 GHz and from 26 to 45 GHz. The single-antenna element of the array consists of a rectangular patch radiator with a triangular slot. The partial ground plane was used at the bottom side of the substrate to obtain a wide impedance bandwidth. The peak gain in the proposed array is ≈12 dBi with a radiation efficiency of >90%. Furthermore, the array gives a half-power beamwidth (HPBW) of as low as 12.5°. The proposed array has been fabricated and measured, and it has been observed that the measured results are in agreement with the simulated data.

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