A dual-polarization dual-mode electromagnetic vortex generator
A dual-mode, generator technology, applied in electrical components, antennas, etc., can solve problems such as complex feeding network systems, and achieve the effects of good radiation performance, easy processing, and easy debugging
Active Publication Date: 2021-06-01
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
For example, the patent application with publication number 207098060U can only produce an orbital angular momentum beam with a mode number of 1, and requires a complex feed network system; the patent application with a publication number of 105552556B can only produce a single polarization with a mode number of 1 Modal OAM beam with incident and reflected waves on the same side of the generator
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[0031] In this embodiment, the working frequency band of the dual-polarization dual-mode electromagnetic vortex generator is the C-band, but the present invention is not limited to this band. figure 1 It is a structural schematic diagram of the generator. It can be seen from the figure that the linearly polarized excitation source and the transmitted wave carrying the orbital angular momentum are located directly above and directly below the transmission metasurface structure, which can reduce the impact of the linearly polarized excitation source on the vortex The impact of waves; the transmission metasurface structure is a stacked structure, which can achieve high transmission efficiency and a wide range of phase adjustment. Among them, the position vector Rf(0, 0, zf) of the linearly polarized excitation source, the linearly polarized excitation wave generated by it can be decomposed into linearly polarized waves polarized in the x and y directions, and through the transmiss...
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A dual-polarization dual-mode electromagnetic vortex generator belongs to the technical field of metamaterial design and OAM wireless communication. The generator includes a transmissive metasurface structure and a linearly polarized excitation source directly above the transmissive metasurface structure; the linearly polarized excitation source is used to generate a linearly polarized incident wave source; the transmissive metasurface structure consists of Metal structures / dielectric substrates / metal structures alternately formed (2n+1) layer structures are stacked, and each layer of metal structures includes M×N metal units arranged in an array; the metal units include metal rings and metal rings inside the metal rings. Metal cross patch, the metal ring has the same center as the metal cross patch. The generator provided by the invention can generate orbital angular momentum waves of dual polarization and dual modes with good radiation performance and weak backward radiation.
Description
technical field [0001] The invention belongs to the technical field of metamaterial design and OAM wireless communication, and in particular relates to a dual-polarization dual-mode electromagnetic vortex generator. Background technique [0002] Nowadays, with the rapid development of wireless communication technology for information exchange, the penetration rate of mobile terminals is gradually increasing, and the mobile Internet is showing an explosive development trend. In mobile communication, the electromagnetic spectrum is not only open, but also limited, making how to improve spectrum efficiency has become the driving force for the continuous development of modern communication technology. Statistics show that wireless service traffic is increasing at a rate close to 100% every year, which means that in the next 10 years, wireless data traffic will increase by 1000 times. In order to meet the ever-increasing demand for mobile data services, there is an urgent need f...
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IPC IPC(8): H01Q3/26
CPCH01Q3/26
Inventor 綦鑫宗显政张哲源陈正天王玥聂在平
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA