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Planar Orbital Angular Momentum Antenna Based on Butler Matrix

An orbital angular momentum, plane technology, applied in the directions of antenna arrays, antennas, and antenna arrays that are energized separately, can solve the high complexity of phased array antenna systems, the large volume of helical parabolic antennas, and the difficulty of designing helical phase plates, etc. problems, to achieve the effect of reducing the difficulty of production and processing, easy maintenance, and difficult integration

Active Publication Date: 2020-10-09
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the stepped spiral phase plate is not easy to design, the spiral parabolic antenna is large in size, the time-varying array antenna requires complex control circuits, and the phased array antenna system is complex, high in cost, and difficult to maintain

Method used

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  • Planar Orbital Angular Momentum Antenna Based on Butler Matrix
  • Planar Orbital Angular Momentum Antenna Based on Butler Matrix
  • Planar Orbital Angular Momentum Antenna Based on Butler Matrix

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0029] refer to figure 1 , figure 2 with image 3 , the present invention is based on the Butler matrix planar orbital angular momentum antenna, including N microstrip lines 1, N patch antennas 2, upper dielectric substrate 3, lower dielectric substrate 4, metal floor 5, Butler feed network 6 and metal copper Column 7, N is a positive integer greater than or equal to 4, and N=4 in this examp...

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Abstract

The invention discloses a plane orbit angular momentum antenna based on a Butler matrix, and mainly solves the problem of complexity of the existing multi-mode orbital angular momentum antenna feedingsystems. The antenna comprises N microstrip lines (1), N patch antennas (2), upper and lower dielectric substrates (3, 4), a metal floor (5), a Butler feed network (6) and N metal copper pillars. (7). The patch antennas are slotted and arranged in central symmetry on the upper surface of the upper dielectric substrate (3), and the Butler feed network is arranged on the lower surface of the lowerdielectric substrate (4) to form a beamforming network of the antenna to generate the phase difference required for the orbital angular momentum. The N patch antennas are correspondingly connected tothe metal copper pillars through the microstrip lines. Vortex electromagnetic waves of mode +-1 are separately generated by exciting different ports of the Butler feed network. The antenna of the invention raises the utilization rate of the communication capacity and frequency spectrum, and can be applied to short range wireless communication.

Description

technical field [0001] The invention belongs to the technical field of antennas, and more specifically relates to a planar orbital angular momentum antenna, which can be used for wireless communication. Background technique [0002] The orbital angular momentum OAM antenna is a device that can transmit multiple electromagnetic signals on the same frequency without interfering with each other. The angular momentum that electromagnetic waves can carry is divided into two categories, one is the spin angular momentum SAM, and the other is the orbital angular momentum OAM. The spin angular momentum is mainly manifested in multi-polarization, but because the polarization component of the antenna is limited, it cannot greatly improve the communication capacity. The orbital angular momentum can generate infinitely many vortex electromagnetic waves that are orthogonal to each other in theory, so the communication capacity can be greatly improved. In recent years, the vortex electro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/36H01Q1/48H01Q1/50H01Q21/00H01Q21/06
CPCH01Q1/36H01Q1/48H01Q1/50H01Q21/0075H01Q21/061
Inventor 杨占彪史小卫李文涛李平
Owner XIDIAN UNIV