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Antenna for generating OAM mode group based on partial slotting of bent waveguide

A technology of curved waveguide and antenna, applied in the field of radio frequency OAM beam generation, can solve problems such as difficulties

Active Publication Date: 2020-06-16
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

but for constructing high l e The same method is very difficult for the module group

Method used

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  • Antenna for generating OAM mode group based on partial slotting of bent waveguide
  • Antenna for generating OAM mode group based on partial slotting of bent waveguide
  • Antenna for generating OAM mode group based on partial slotting of bent waveguide

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Embodiment

[0030] Such as Figure 2-3 , in this embodiment, the equivalent OAM order l of the OAM module group is generated e =±40, the working frequency is 60GHz, and the simulation software is the commercial full-wave simulation software CSTStudioSuite 2018. The broad side of the curved waveguide section is 2.8mm, the narrow side of the curved waveguide section is 0.68mm, the inner diameter of the curved waveguide is 78.60mm, and the angle corresponding to the arc length of the curved waveguide is 90°. The waveguide feed port / waveguide matching load port is designed according to the 60GHz standard waveguide size WR-15. The slit width is 0.70mm, and the angle corresponding to the arc length of the slit is 40°.

[0031] Figure 4 is the OAM module group l e = 40 S-parameters. OAM module group equivalent OAM order l e The sign of is only related to the direction of the traveling wave. Since the design dimensions, slit positions, and slit widths of the two curved waveguides are the ...

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Abstract

The invention discloses an antenna for generating an OAM mode group based on partial slotting of a bent waveguide. The antenna comprises a waveguide feed port, a first tapered waveguide, a second tapered waveguide, a waveguide matching load port and the bent waveguide, wherein two ends of the bent waveguide are respectively connected with one end of the first tapered waveguide and one end of the second tapered waveguide, the other end of the first tapered waveguide is connected with the waveguide feed port, and the other end of the second tapered waveguide is connected with the waveguide matching load port. The OAM mode group generated by the antenna presents a high-gain wave beam with concentrated energy and still has spiral phase distribution in a main lobe range of the wave beam. The phase linearity is good, the equivalent OAM order is high, the problem that it is difficult to generate a plurality of continuous high-order OAM modes and superpose the modes into an OAM mode group is solved, and the feasibility of engineering implementation is higher. The OAM mode group with a high equivalent OAM order can realize a farther transmission distance and higher spectral efficiency in awireless line-of-sight MIMO communication system.

Description

technical field [0001] The invention belongs to the field of radio frequency OAM beam generation, in particular to an antenna for generating OAM mode groups based on slots in curved waveguide parts. Background technique [0002] As an inherent property of electromagnetic waves, orbital angular momentum beams with helical phase distribution are considered as a new degree of freedom that can be exploited. In the past ten years, OAM has derived many potential applications. In addition to multiplexing transmission in optical communication and radio frequency communication systems, OAM has also been applied in nanotechnology, quantum information technology and radar computing imaging and other fields. However, in practical applications, the OAM beam presents a "doughnut-like" intensity profile, especially in the radio frequency domain. Due to the inherent divergence characteristics and the central phase singularity, as the propagation distance increases, the "donut-like" intens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/50
CPCH01Q1/36H01Q1/50
Inventor 熊孝文郑史烈陈煜琪章献民金晓峰余显斌
Owner ZHEJIANG UNIV