Antenna capable of producing radio frequency orbital angular momentum beams based on dielectric resonator

Abstract

The invention discloses an antenna capable of producing radio frequency orbital angular momentum beams based on a dielectric resonator. The antenna comprises a microwave dielectric resonator, a microstrip line, a microwave substrate and a metal ground plane, wherein the microwave dielectric resonator adopts a cylindrical structure and has an annular cross section, the external diameter is D, the internal diameter is d, the height is h, and d is larger than or equal to 0 and smaller than D; the relative dielectric constant of the microwave dielectric resonator is epsilon r, the microwave dielectric resonator is placed on the microwave substrate with the relative dielectric constant being epsilon s, the metal ground plane is arranged below the microwave substrate, the microwave dielectric resonator performs feeding through the microstrip line, and a whispering-gallery mode in the dielectric resonator is excited. The dielectric resonator with simple structure is designed and used to realize emission of radio frequency beams carrying different l-order orbital angular momentum at different direction angles, and the antenna has quite important meaning for the emerging fields of high-speed radio frequency communication, radar detection and the like by using the orbital angular momentum.

Description

technical field [0001] The invention belongs to the technical field of radio frequency orbital angular momentum wireless communication, and relates to an antenna for generating radio frequency orbital angular momentum beams based on a dielectric resonator. Background technique [0002] With the development of mobile communication technologies such as smart phones, people's requirements for wireless communication rates are also getting higher and higher. However, spectrum resources are in short supply, and the spectrum available for use has become less and less. The traditional method of increasing the communication rate by dividing new communication frequency bands has become unsustainable. How to improve the wireless communication rate under limited communication resources is an important issue in the communication industry. a great challenge. At present, multiplexing technologies such as time-division multiplexing, frequency-division multiplexing, and code-division multip...

AI Technical Summary

Problems solved by technology

However, most of the existing generation and emission devices have shortcomings such as large size and difficulty in integrating with existing systems.

Large size will increase cost and power consumption, and it is not suitable for integration with existing systems, thus limiting the promotion and application of this emerging technology of orbital angular momentum communication

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