scholarly journals Generation of Plane Spiral Orbital Angular Momentum Waves by Microstrip Yagi Antenna Array

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 175688-175696
Author(s):  
Xiao Yu Liu ◽  
Yongzhong Zhu ◽  
Wenxuan Xie ◽  
Guo Hao Peng ◽  
Wei Wang
Keyword(s):  
Angular Momentum ◽  
Antenna Array ◽  
Orbital Angular Momentum ◽  
Yagi Antenna ◽  
Plane Spiral

scholarly journals Generation of plane spiral orbital angular momentum using circular double-slot Vivaldi antenna array

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Yongzhong Zhu ◽  
Weiguo Dang ◽  
Xiaoyu Liu ◽  
Yijun Chen ◽  
Xiaofei Zhou ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Antenna Array ◽  
Orbital Angular Momentum ◽  
Feasible Solution ◽  
Impedance Bandwidth ◽  
Vortex Phase ◽  
Vivaldi Antenna ◽  
5 Ghz ◽  
Plane Spiral ◽  
Circular Antenna Array

Abstract A novel and feasible solution to generate plane spiral orbital angular momentum (PSOAM) vortex beam is proposed in this paper. The general principle of generating PSOAM in circular antenna array (CAA) is deduced, and verified by the simulation of the dipole CAA. Four double-slot Vivaldi antenna elements connect sequentially and are inserted into a CAA, which makes the proposed antenna easily fabricated and fully miniaturized. Both simulated and measured results show that it can generate PSOAM with l = 3 (l is the mode number of vortex wave) at 5 GHz. The vortex phase of l = 3 is observed, the measured peak gain is 5.7 dB. The VSWR remains below 2 from 4 to 6 GHz, which shows the impedance bandwidth of S11 < −10 dB is more than 40%.

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