scholarly journals Four Ports Double Y-Shaped Ultra-Wideband Magneto-Photonic Crystals Circulator for 5G Communication System

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 120463-120474 ◽  
Author(s):  
Yong Wang ◽  
Dengguo Zhang ◽  
Biaogang Xu ◽  
Zheng Dong ◽  
Xuanke Zeng ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Communication System ◽  
Ultra Wideband ◽  
5G Communication

scholarly journals Magneto-Optical Isolator Based on Ultra-Wideband Photonic Crystals Waveguide for 5G Communication System

Crystals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 570 ◽  
Author(s):  
Yong Wang ◽  
Biaogang Xu ◽  
Dengguo Zhang ◽  
Shixiang Xu ◽  
Zheng Dong ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Communication Systems ◽  
High Efficiency ◽  
Three Dimensional ◽  
Transmission Efficiency ◽  
Ultra Wideband ◽  
Wave Band ◽  
Optical Isolator ◽  
Millimeter Wave Band ◽  
5G Communication

This paper presents a novel magneto-optical isolator based on an ultra-wideband and high efficiency photonic crystals (PCs) waveguide and gyromagnetic ferrites. The three-dimensional numerical simulation finds that the photonic crystals waveguide’s (PCW) transmission efficiency rises with its height and width. The corresponding experiments are performed by using a triangular lattice Al2O3 dielectric posts array in 5G millimeter wave band. The measured transmission efficiency is up to 90.78% for the optimal PCs waveguide structure, which has ultra-wide operating bandwidth from 23.45 to 31.25 GHz. The magneto-optical isolator is designed by inserting two rectangular gyromagnetic ferrites into the PCs waveguide. Due to the contrast between the effective permeability of the left and right circular polarization waves passing through the magnetized ferrite sheets, the ferromagnetic resonance absorption of the forward and reverse waves is different. By using finite element method, the isolation is optimized to be 49.49 dB for the isolator and its relative bandwidth reaches 8.85%. The high isolation, broadband, and easy integration indicate that our designed magneto-optical isolator has significant advantage in 5G communication systems.

Design of a Compact Vivaldi Antenna for Millimeter-Wave 5G Communication System

2021 ◽  
Author(s):  
Fardeen Mahbub ◽  
Rashedul Islam ◽  
Sayed Abdul Kadir Al-Nahiun ◽  
M Tanseer Ali
Keyword(s):  
Millimeter Wave ◽  
Communication System ◽  
Vivaldi Antenna ◽  
5G Communication
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