HM-SIW ring resonator structure antenna and multiplexer for generating radio frequency oam beams

Abstract

The invention belongs to the technical field of radio frequency OAM wireless communication, and specifically provides a HW-SIW ring resonant cavity structure antenna for generating radio frequency OAM beams, which is used to overcome the defects of complex structure, complex feeding system, difficult integration and high cost of existing antennas. The invention comprises a dielectric substrate, a grounding plate arranged under the dielectric substrate, and a HM-SIW ring resonant cavity arranged on the dielectric substrate, and two rectangular grooves are respectively opened along the circumferential direction on the HW-SIW ring resonant cavity; The HW‑SIW ring resonator is fed with a coaxial probe. The present invention greatly reduces the size of the antenna, makes the structure of the antenna more compact and simpler, and simplifies the feeding system. The coaxial single feed can generate radio frequency OAM beams, making the design of the antenna system simpler, thereby making the above-mentioned Antennas are easy to integrate with significantly reduced power consumption and cost. Meanwhile, the present invention also provides a radio frequency OAM beam multiplexer based on the above antenna.

Description

technical field [0001] The invention belongs to the technical field of radio frequency OAM wireless communication, and in particular relates to an antenna and a multiplexer for generating radio frequency OAM beams based on a half-mode substrate integrated waveguide (HM-SIW) ring resonant cavity. Background technique [0002] With the rapid development of the mobile Internet and the popularization of smart terminals, the mobile Internet has shown an explosive development trend. However, this will make the spectrum resources allocated by the wireless communication system increasingly crowded and the system capacity increasingly scarce. At present, the capacity of the mobile communication system is close to the Shannon limit. In order to solve the increasingly prominent problem of system capacity shortage and spectrum resource shortage, and meet the upcoming rapid increase of mobile data services. At present, multiplexing technologies such as time-division multiplexing, frequen...

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Problems solved by technology

[0004] 1. The projection spiral structure can only target a certain frequency, and the generated vortex electromagnetic waves can only be concentrated in the area of ​​the dielectric substrate size, while the area outside the dielectric substrate is still a plane wave;

[0005] 2. The projected grating structure generates orbital angular momentum, and the process of making the holographic grating is complicated, and the technical requirements of the manufacturing process are high, which greatly increases the cost;

[0006] 3. The structure of the helical reflector is simple and easy to implement, but it can only make a phase shift for a specific frequency, and a certain geometric structure can only generate one mode of OAM wave. If different OAM beams need to be generated, the helix must be adjusted The size of the reflective surface, which can cause inconvenience in practical applications;

[0007] 4. Although the phased array antenna can realize the multiplexing of radio frequency OAM, it has strict requirements on the phase control between each array element, and at the same time, it needs to feed the multi-segment ports, which will increase the complexity of the phased array antenna

[0008] The above-mentioned structures are all antenna devices that generate radio frequency OAM beams. Either the structure is complex, or the processing technology requirements are high, or the feeding system is complex, etc., which will lead to increased costs and are not easy to integrate, which is not conducive to accelerating and promoting future radio frequency OAM. The rapid development and application of beam in the field of wireless communication

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