Improved Directivity of an OAM Antenna by a Fabry-Perot Cavity: An Experimental Study  

作　　者：Wenlong Wei Wenlin Kuai Kourosh Mahdjoubi Christian Brousseau Olivier Emile Wenlong Wei;Wenlin Kuai;Kourosh Mahdjoubi;Christian Brousseau;Olivier Emile(Shanghai Satellite Engineering Institute, Shanghai, China;Institute of Electronics and Telecommunications of Rennes (IETR), University of Rennes 1, Rennes, France;Laser Physics Laboratory (LPL), University of Rennes 1, Rennes, France)

机构地区：[1]Shanghai Satellite Engineering Institute, Shanghai, China [2]Institute of Electronics and Telecommunications of Rennes (IETR), University of Rennes 1, Rennes, France [3]Laser Physics Laboratory (LPL), University of Rennes 1, Rennes, France

出　　处：《Open Journal of Antennas and Propagation》2021年第4期65-73,共9页天线与传播（英文）

摘　　要：The circular phased antenna array is commonly used for generating waves bearing Orbital Angular Momentum (OAM) in the radio frequency band, but it achieves a relatively low directivity. To overcome this drawback, we present here a method to improve the directivity of an OAM circular phased antenna array by embedding it inside a Fabry-Perot cavity. The Fabry-Perot cavity contains three main parts: a partially reflecting surface (PRS), an air cavity and a ground plane. Simulation data show that the directivity of this new OAM antenna achieves an improvement of 8.2 dB over the original array. A prototype is realized and characterized. The simulated and measured characteristics are in good agreement.The circular phased antenna array is commonly used for generating waves bearing Orbital Angular Momentum (OAM) in the radio frequency band, but it achieves a relatively low directivity. To overcome this drawback, we present here a method to improve the directivity of an OAM circular phased antenna array by embedding it inside a Fabry-Perot cavity. The Fabry-Perot cavity contains three main parts: a partially reflecting surface (PRS), an air cavity and a ground plane. Simulation data show that the directivity of this new OAM antenna achieves an improvement of 8.2 dB over the original array. A prototype is realized and characterized. The simulated and measured characteristics are in good agreement.

关 键 词：Circular Antenna Array Fabry-Perot Cavity Orbital Angular Momentum Patch Antenna Phase Shifter 

分 类 号：TN9[电子电信—信息与通信工程]