Design and verification of monopole patch antenna systems to generate orbital angular momentum waves
Dandan Liu,
Liangqi Gui,
Cong Zhou,
Zixiao Zhang,
Han Chen,
Tao Jiang
Affiliations
Dandan Liu
National Key Laboratory of Science and Technology on Multi-Spectral Information Processing, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, China
Liangqi Gui
National Key Laboratory of Science and Technology on Multi-Spectral Information Processing, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, China
Cong Zhou
National Key Laboratory of Science and Technology on Multi-Spectral Information Processing, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, China
Zixiao Zhang
National Key Laboratory of Science and Technology on Multi-Spectral Information Processing, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, China
Han Chen
National Key Laboratory of Science and Technology on Multi-Spectral Information Processing, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, China
Tao Jiang
Wuhan National Laboratory for Optoelectronics, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, China
Monopole patch antenna systems, which can generate orbital angular momentum (OAM) waves at 2.4GHz, are proposed in this paper. The proposed antenna systems have advantages of simple planar structure and small size of antenna element. Design, simulation, fabrication and measurement of the proposed antenna systems are presented. Two feeding networks, which constitute the proposed antenna systems with monopole patch antenna array, are designed to generate modes 1 and 2 of OAM waves. The antenna systems for both modes are shown to be effective in generating OAM waves of modes 1 and 2 from both simulation and three types of measurement: radiation pattern, phase distribution and phase gradient. Simulation and measurement results of radiation pattern and phase distribution have shown very close results. Phase gradient measurement results has verified that the generated waves from the antenna systems are indeed OAM waves.
