scholarly journals The Capacity Gain of Orbital Angular Momentum Based Multiple-Input-Multiple-Output System

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Zhuofan Zhang ◽  
Shilie Zheng ◽  
Yiling Chen ◽  
Xiaofeng Jin ◽  
Hao Chi ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Multiple Input Multiple Output ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Output System ◽  
Capacity Gain

scholarly journals Three-Mode Vortex Wave Generator with Double-Layer Patch Antennas

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Jun Hu ◽  
Tong-Tong Qiu ◽  
Xue Lan ◽  
Wei Xu ◽  
Song-Song Qian
Keyword(s):  
Angular Momentum ◽  
Double Layer ◽  
Orbital Angular Momentum ◽  
Multiple Input Multiple Output ◽  
Patch Antennas ◽  
Circular Array ◽  
Planar Antennas ◽  
Multiple Input ◽  
Wave Generator ◽  
Input Multiple Output

With the development of Multiple-Input Multiple-Output technologies, researches on radio vortex wave with orbital angular momentum have become active. At the same time, generators of miniaturized planar antennas have become very interesting. Considering multilayer package, we proposed a uniform circle array consisting of four double-layer patch antennas with microstrip backfeeds. The antenna can generate three modes of vortex waves, which works at frequency 7.6GHz with a bandwidth 8.5%. Compared with orbital angular momentum antennas of phased uniform circular array with other cells, this proposed structure can be easily integrated with planar feeding networks and decoupling networks.

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