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Ultrathin Orbital Angular Momentum Helical Phase Plate Antenna and Its Design Method

A technology of spiral phase plate and orbital angular momentum, applied in antennas, slot antennas, antenna arrays, etc., can solve the problems of bulkiness and unfavorable practical application, and achieve the effect of small transmission loss

Active Publication Date: 2018-07-17
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the thickness of the above-mentioned spiral phase plate is usually greater than half the wavelength, so the structure is too bulky in the microwave region, which is not conducive to practical application

Method used

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  • Ultrathin Orbital Angular Momentum Helical Phase Plate Antenna and Its Design Method
  • Ultrathin Orbital Angular Momentum Helical Phase Plate Antenna and Its Design Method

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Embodiment Construction

[0040] Such as figure 1 As shown, the ultra-thin orbital angular momentum helical phase plate antenna of this embodiment is formed by a number of helical phase plate antenna units arranged horizontally and vertically in a quasi-periodic manner. In the figure, a square is a unit. Such as figure 2 As shown, each helical phase plate antenna unit is formed by stacking two antenna subunits up and down, and each antenna subunit includes a first dielectric substrate and a second dielectric substrate, and the upper surface of the first dielectric substrate and the second dielectric substrate Metal gap structures, specifically square, are provided on the lower surfaces of the first dielectric substrate and photonic band gap structures between the lower surface of the first dielectric substrate and the upper surface of the second dielectric substrate.

[0041] Among them, the compensation phase of the helical phase plate antenna unit Determined by its location, the specific relation...

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Abstract

The invention discloses an ultrathin orbital angular momentum spiral phase plate antenna. The antenna is composed of multiple spiral phase plate antenna units which are transversely and vertically arranged and combined. Each spiral phase plate antenna unit is formed by upper and lower antenna subunits through stacking. Each antenna subunit comprises a first dielectric substrate and a second dielectric substrate. The upper surface of the first dielectric substrate and the lower surface of the second dielectric substrate are provided with a metal slit structure. A photonic band gap structure is arranged between the lower surface of the first dielectric substrate and the upper surface of the second dielectric substrate. Besides, the invention also discloses a design method of the ultrathin orbital angular momentum spiral phase plate antenna. The thickness is minimized and the great performance of the antenna is maintained, and the antenna is flexible and convenient so that the disadvantages that the common spiral phase plate antenna is high in thickness and heavy in structure can be avoided.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to an ultra-thin orbital angular momentum helical phase plate antenna and a design method thereof. Background technique [0002] The rapid development of modern communication systems brings more convenience to people's lives, but also faces severe challenges due to the increasingly tight spectrum resources. How to make more reasonable use of spectrum resources and improve spectrum utilization and coding efficiency has become a research hotspot in the field of wireless communication today. OAM beams of different orders are orthogonal to each other, which allows OAM beams to be multiplexed and demultiplexed along the axis. Therefore, a complete line-of-sight transmission link can be established, and each OAM beam can carry a set of data in the same frequency band, so that the communication capacity and spectrum utilization rate can be increased by N times, where N is the OAM used in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q3/30H01Q3/32H01Q13/10H01Q21/00
CPCH01Q1/38H01Q3/30H01Q3/32H01Q13/10H01Q21/00
Inventor 崔铁军师传波李允博吴伟
Owner SOUTHEAST UNIV