scholarly journals DUAL POLARIZED UWB MIMO ANTENNA WITH ELLIPTICAL POLARIZATION FOR ACCESS POINT WITH VERY HIGH ISOLATION USING EBG AND MSR

2020 ◽  
Vol 99 ◽  
pp. 87-98 ◽  
Author(s):  
Gnanaharan Irene ◽  
Anbazhagan Rajesh
Keyword(s):  
Access Point ◽  
Elliptical Polarization ◽  
Mimo Antenna ◽  
High Isolation ◽  
Dual Polarized ◽  
Very High

scholarly journals High Gain Triple-Band Metamaterial-Based Antipodal Vivaldi MIMO Antenna for 5G Communications

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 250
Author(s):  
Tale Saeidi ◽  
Idris Ismail ◽  
Sima Noghanian ◽  
Adam R. H. Alhawari ◽  
Qammer H. Abbasi ◽  
...  
Keyword(s):  
Printed Circuit Board ◽  
Multiple Input Multiple Output ◽  
High Gain ◽  
Radiation Efficiency ◽  
Circuit Board ◽  
Spiral Antenna ◽  
Mimo Antenna ◽  
High Isolation ◽  
Dual Polarized ◽  
Triple Band

This paper presents a miniaturized dual-polarized Multiple Input Multiple Output (MIMO) antenna with high isolation. The antenna meets the constraints of sub-6 GHz 5G and the smartphones’ X-band communications. A vertically polarized modified antipodal Vivaldi antenna and a horizontally polarized spiral antenna are designed and integrated, and then their performance is investigated. Three frequency bands of 3.8 GHz, 5.2 GHz, and 8.0 GHz are considered, and the proposed dual-polarized antenna is studied. High isolation of greater than 20 dB is obtained after integration of metamaterial elements, and without applying any other decoupling methods. The proposed triple-band metamaterial-based antenna has 1.6 GHz bandwidth (BW) (2.9 GHz–4.5 GHz), 13.5 dBi gain, and 98% radiation efficiency at 3.8 GHz. At 5.2 GHz it provides 1.2 GHz BW, 9.5 dBi gain, and 96% radiation efficiency. At 8.0 GHz it has 1 GHz BW, 6.75 dBi gain, and 92% radiation efficiency. Four antenna elements (with eight ports) were laid out orthogonally at the four corners of a mobile printed circuit board (PCB) to be utilized as a MIMO antenna for 5G communications. The performance of the MIMO antenna is examined and reported.

Dual-polarized MIMO antenna system for WiFi and LTE wireless access point applications

2014 ◽  
Vol 30 (1) ◽  
pp. e2898 ◽  
Author(s):  
Alishir Moradikordalivand ◽  
Tharek Abd Rahman ◽  
Chee Yen Leow ◽  
Sepideh Ebrahimi
Keyword(s):  
Access Point ◽  
Antenna System ◽  
Wireless Access ◽  
Mimo Antenna ◽  
Dual Polarized ◽  
Wireless Access Point

scholarly journals Wideband Dual-Polarized Quasi-Omnidirectional Antenna with High Isolation for Mobile Applications in High-Speed Vehicles

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Peng Luo ◽  
Chengguo Nie ◽  
Qing Gong ◽  
Yuehui Cui
Keyword(s):  
Mobile Applications ◽  
High Speed ◽  
Impedance Bandwidth ◽  
Horizontal Polarization ◽  
Vertical Polarization ◽  
High Isolation ◽  
Omnidirectional Antenna ◽  
Vertical Slot ◽  
Dual Polarized ◽  
Very High

A new wideband dual-polarized (DP) quasi-omnidirectional antenna is proposed. The DP antenna consists of a vertical slot for horizontal polarization (HP) and a folded horizontal slot for vertical polarization (VP). A tapered strip is employed to coupling feed the vertical slot while a straight strip is used to excite the horizontal slot. Due to the coupling feed and the orthogonality between the vertical and horizontal slots, the DP antenna features a wide bandwidth and a very high isolation. The simulated isolation is higher than 70 dB, although the measured isolation is about 50 dB. As experimental results indicate, the DP antenna realizes an impedance bandwidth (BW) of 45% (1.7–2.73 GHz) with quasi-omnidirectional radiation patterns for both HP and VP. The DP quasi-omnidirectional antenna may be packaged into a radome with a shape of a blade for mobile applications in high-speed vehicles.

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