Broadband and reconfigurable OAM antenna

Abstract

The invention relates to a broadband and reconfigurable OAM antenna. The antenna comprises metal spiral arms (1), a dielectric substrate (2), coaxial probes (3) and a floor (4). The metal spiral arms are arranged on the upper surface of the dielectric substrate, the spiral direction of the metal spiral arms is opposite to the rotation direction of an OAM beam wave finally generated by the antenna, and the quantity of the metal spiral arms can be flexibly set according to needs; the coaxial probes are used for feeding the metal spiral arms, the number of the coaxial probes are equivalent to that of the spiral arms, and the multiple coaxial probes are loaded with uniform-amplitude and in-phase feed signals; and the floor is arranged on the lower surface of the dielectric plate, and the radius of the floor is far smaller than that of the dielectric substrate. The antenna is simple in structure and easy to implement, has broadband operation and pattern reconfiguring capability, and can be expected to be applied to an OAM wireless communication technology, thereby improving spectrum effectiveness and system capacity of the wireless communication system.

Description

technical field [0001] The patent of the present invention belongs to the technical field of wireless communication, and specifically relates to a broadband reconfigurable OAM antenna. Background technique [0002] With the rapid development of mobile services, the contradiction between the limited wireless spectrum resources and the massive data services it carries has become increasingly prominent. In order to solve this contradiction, it is necessary to further improve the efficiency of wireless spectrum use. In this regard, multiplexing is an open magic weapon for the communication business to develop and grow all the time. The multiplexing technology can significantly improve the efficiency of the spectrum by providing more transmission channels on the limited spectrum, and ultimately achieve a great increase in the capacity of the communication system, thereby allowing the system to provide more data services. [0003] The multiplexing resources currently used by comm...

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Problems solved by technology

The method is simple in design and has the reconstruction ability of two modes, but the working bandwidth is narrow and the structural robustness is poor

[0006] To sum up, the research and design of OAM generators have important practical significance, but there are many problems in the microwave OAM antennas reported so far, such as difficulty in realization, narrow working bandwidth, poor mode reconstruction ability, and poor structural robustness, so it is necessary to continue Explore Alternative OAM Antenna Design Techniques and Methodologies

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