A wideband four‐port multiple‐input‐multiple‐output slot antenna for WLAN / WiFi / 5G below 6 GHz applications

2021 ◽  
Author(s):  
Abdulaziz Dessalew Tadesse ◽  
Om Prakash Acharya ◽  
Sudhakar Sahu
Keyword(s):  
Multiple Input Multiple Output ◽  
Slot Antenna ◽  
Multiple Input ◽  
Input Multiple Output

A planar miniaturized UWB dual‐polarization multiple‐input‐multiple‐output slot antenna

2019 ◽  
Vol 62 (1) ◽  
pp. 432-438 ◽  
Author(s):  
Ming‐Tao Tan ◽  
Xiang Li ◽  
Wang‐He Wei ◽  
Wen‐Xue Tan ◽  
Bin Zhou ◽  
...  
Keyword(s):  
Multiple Input Multiple Output ◽  
Slot Antenna ◽  
Dual Polarization ◽  
Multiple Input ◽  
Input Multiple Output

scholarly journals High-Performance Multiple-Input Multiple-Output Antenna System For 5G Mobile Terminals

Electronics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1090 ◽  
Author(s):  
Mujeeb Abdullah ◽  
Saad Hassan Kiani ◽  
Lway Faisal Abdulrazak ◽  
Amjad Iqbal ◽  
M. A. Bashir ◽  
...  
Keyword(s):  
Multiple Input Multiple Output ◽  
Antenna System ◽  
Mimo Channel ◽  
Slot Antenna ◽  
Total Efficiency ◽  
Multiple Antenna ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Metal Casing ◽  
Multiple Antenna System

In this paper, the systematic design of a multiple antenna system for 5G smartphone operating at 3.5 GHz for multiple-input multiple-output (MIMO) operation in smartphones is proposed. The smartphone is preferred to be lightweight, thin, and attractive, and as a result metal casings have become popular. Using conventional antennas, such as a patch antenna, Inverted-F antennas, or monopole, in proximity to metal casing leads to decreasing its total efficiency and bandwidth. Therefore, a slot antenna embedded in the metal casing can be helpful, with good performance regarding bandwidth and total efficiency. The proposed multiple antenna system adopted the unit open-end slot antenna fed by Inverted-L microstrip with tuning stub. The measured S-parameters results agree fairly with the numerical results. It attains 200 MHz bandwidth at 3.5 GHz with ports isolation of (≤−13 dB) for any two antennas of the system. The influence of the customer’s hand for the proposed multiple antenna system is also considered, and the MIMO channel capacity is computed. The maximum achievable MIMO channel capacity based on the measured result is 31.25 bps/Hz and is about 2.7 times of 2 × 2 MIMO operation.

Compact 4-Port UWB-MIMO Slot Antenna with Dual Polarization and Low Correlation for Spatial Diversity Application

Frequenz ◽  
2018 ◽  
Vol 72 (11-12) ◽  
pp. 503-509
Author(s):  
Rohit Mathur ◽  
Santanu Dwari
Keyword(s):  
Multiple Input Multiple Output ◽  
Wide Band ◽  
Spatial Diversity ◽  
Slot Antenna ◽  
Dual Polarization ◽  
Low Correlation ◽  
Compact Size ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Better Than

Abstract A compact 4-port ultra-wide band (UWB) multiple-input-multiple-output (MIMO) slot antenna with dual polarization is presented. The key features of antenna are: has directive radiation in two planes and low correlation without use of additional decoupling structure. The antenna contains four microstrip feedlines having circular patches backed by stepped circular slots. Orthogonal arrangement of each slot antenna increases compactness with polarization diversity and good isolation. The antenna has compact size of 36×36×0.8 mm3. It operates in the frequency band of 3.1 to 11.9 GHz and isolation is better than 15 dB. The superior diversity performance is ensured by calculating envelope correlation coefficient (ECC) and diversity gain. In addition to guarantee distortion less transmission in UWB group delay is also measured.

scholarly journals Design of a Compact UWB MIMO Antenna without Decoupling Structure

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Yanjie Wu ◽  
Kang Ding ◽  
Bing Zhang ◽  
Jianfeng Li ◽  
Duolong Wu ◽  
...  
Keyword(s):  
Impedance Matching ◽  
Multiple Input Multiple Output ◽  
Monopole Antenna ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Mimo Antenna ◽  
High Isolation ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Mobile Handset

A compact high isolation ultrawideband (UWB) multiple-input-multiple-output (MIMO) antenna is designed. The proposed MIMO antenna consists of a rectangular monopole antenna and a slot antenna fed by two microstrip lines, respectively. To improve the impedance matching, a circular coupling structure is designed to feed the tapered slot antenna. The parasitic resonance introduced by the ground stub helps to extend the impedance bandwidth of monopole antenna at the upper UWB band. Commonly used complex decoupling or coupling structures are eliminated that endow the proposed antenna minimized foot print, which is preferred in mobile handset. Although without decoupling structure, high isolation is obtained between two antenna elements. Simulation and measurement verify the antenna’s desirable performance, showing a broad impedance bandwidth of 3.1–10.6 GHz with |S11| < −10 dB and |S21| < −20 dB over 3.4–10.6 GHz, and |S21| < −18 dB from 3.1–3.4 GHz.

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