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Antenna panel, vortex beam antenna and working method thereof

An antenna panel and vortex technology, applied in the direction of antenna, antenna array, antenna grounding switch structure connection, etc., can solve the problems of limited operating bandwidth and strong frequency dependence, achieve easy miniaturization and integration, and achieve miniaturization and integrated effects

Active Publication Date: 2021-05-04
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide an antenna panel, a vortex beam antenna and its working method to solve the problem of strong frequency dependence, The problem of limited working bandwidth

Method used

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  • Antenna panel, vortex beam antenna and working method thereof
  • Antenna panel, vortex beam antenna and working method thereof
  • Antenna panel, vortex beam antenna and working method thereof

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Embodiment 1

[0068] Embodiment 1 of the present invention discloses an antenna panel, the structure of which is as follows image 3 , Figure 4 As shown in (a), the antenna panel contains at least one antenna array, and the antenna array includes a plurality of antenna units uniformly distributed along the circumference, and the orientation angles of the plurality of antenna units change sequentially with the change of the direction angle of the antenna units.

[0069] Compared with the prior art, the antenna panel provided by the present invention can realize broadband control of the radiation phase of the circularly polarized electric field in three-dimensional space through the geometric rotation of the antenna elements in the antenna panel. That is, the phase shifting function can be realized by using the rotation of the antenna unit itself, and the realization of the phase shifting function has nothing to do with the structure of the antenna unit itself. Specifically, the antenna pan...

Embodiment 2

[0075] Embodiment 2 of the present invention discloses a vortex beam antenna, such as Figure 4As shown, it includes any antenna panel above, and a power divider arranged under the antenna panel, the number of layers of the power divider is consistent with the number of antenna arrays, and is connected to the antenna array in one-to-one correspondence, for Realize power distribution. Since the above-mentioned antenna panel can realize the phase-shifting function, the rear end of the vortex beam antenna provided in this implementation no longer needs to be phase-shifted, thereby simplifying the original phase-shifting feed network into a simple power splitter, which overcomes the The shortcoming of narrow-band operation caused by the frequency-dependent characteristics of the phase-shifted feed network is eliminated, and the working bandwidth of the vortex beam antenna in the present invention is expanded.

[0076] Preferably, the multiple output ports of the power splitter ar...

Embodiment 3

[0078] In Embodiment 3 of the present invention, a specific three-mode vortex beam antenna size design method is given, such as Figure 4 As shown: the antenna array on the antenna panel is distributed in inner and outer circles; the inner circle is provided with two antenna arrays arranged in a staggered manner, and the corresponding orbital angular momentum modes are respectively l=+1 and l=-1; The outer ring is provided with an antenna array, and the corresponding orbital angular momentum mode is l=-2. Among them, the initial angle of the antenna element corresponding to the orbital angular momentum mode l=+1 is The initial angle of the antenna element corresponding to the orbital angular momentum mode l=-1 is The initial angle of the antenna element corresponding to the orbital angular momentum mode l=-2 is Exemplarily, in this embodiment, each antenna array in the inner ring includes 8 antenna elements, and the array in the outer ring includes 16 antenna arrays.

[...

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Abstract

The invention relates to an antenna panel, a vortex beam antenna and a working method of the vortex beam antenna, belongs to the technical field of vortex beam antennas, and solves the problems that an existing vortex beam transmitting device is high in frequency dependence and limited in working bandwidth due to phase shift through a phase shift feed network. The antenna panel comprises at least one antenna array, which comprises a plurality of antenna units which are uniformly distributed along the circumference, wherein the orientation angles of the plurality of antenna units are sequentially changed along with the change of the direction angles of the antenna units. The vortex beam antenna comprises the antenna panel and power dividers arranged below the antenna panel, wherein the number of layers of the power dividers is consistent with the number of antenna arrays, and the power dividers are connected with the antenna arrays in a one-to-one correspondence mode and used for achieving power distribution. According to the working method of the vortex beam antenna, the power divider is connected with a signal transmitter, a radio frequency excitation signal is provided through the signal transmitter, and transmission of vortex beams is achieved. According to the technical scheme, the problems existing in the prior art can be well solved.

Description

technical field [0001] The invention relates to the technical field of vortex beam antennas, in particular to an antenna panel, a vortex beam antenna and a working method thereof. Background technique [0002] As we all know, vortex beams with Orbital Angular Momentum (OAM) can transmit multiple signals at the same frequency at the same time, and have the potential to improve spectral efficiency, so they have attracted much attention. Due to limited spectrum resources in the microwave field, this multiplexing method is of great significance. Among the various methods of multi-mode vortex beam generation, the circular antenna array is considered to be an effective and convenient method, which can realize the multiplexing of different OAM mode signals through coaxial arrangement. In addition, the technical means for vortex beamforming in the microwave band include helical phase plates, traveling wave antennas, holographic diffraction gratings, and transmission / reflection meta...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/50H01Q21/00
CPCH01Q1/36H01Q1/50H01Q21/00
Inventor 李宏强武超李权赵松
Owner TONGJI UNIV
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