Design and research of ultra wideband OAM antenna

• Main Authors: Chang Wei, Sun Xuehong, Liu Liping
• Format: Article
• Language: zho
• Published: National Computer System Engineering Research Institute of China 2018-07-01
• Series: Dianzi Jishu Yingyong
• Subjects: ultra-wideband; orbital angular momentum; multiple frequency bands; frequency spectrum utilization
• Online Access: http://www.chinaaet.com/article/3000085266

With the rapid development of modern communication technology, there comes great demand of multi-frequency and broadband antennas of compact size. It is also urgent to solve the problem of the shortage of spectrum resources and low utilization of spectrum. In this paper, the new spectrum reuse resources of orbital angular momentum(OAM) are combined with ultra-wideband antenna technology, a kind of ultra-wideband OAM antenna is designed. The simulation results show that the working band of OAM antenna covers Ku, K and Ka multiple frequency bands, and multiple modes of OAM beam can be generated in the microwave section of the high frequency. The OAM beams of various modes have good rotation and symmetry, and the characteristics of different OAM mode beams are analyzed. Finally, it is found that the same mode OAM beam is generated at different frequency points at different frequency bands, which energy concentration is basically consistent. This indicates the feasibility and effectiveness of the OAM antenna.