Antenna panel, vortex beam antenna and working method thereof

An antenna panel and vortex technology, which is applied to the structural connection of antennas, antenna arrays, and antenna grounding switches, etc., can solve problems such as limited operating bandwidth and strong frequency dependence, and achieve easy miniaturization and integration, and realize miniaturization and the effect of integrating

Active Publication Date: 2022-03-22
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 thereof, belonging to the technical field of vortex beam antennas, and solves the problem of strong frequency dependence, poor The problem of limited working bandwidth. 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. The vortex beam antenna includes the above-mentioned antenna panel, and a power divider arranged under the antenna panel, the number of layers of the power divider is the same as the number of antenna arrays, and is connected with the antenna arrays in one-to-one correspondence to realize power distribution . The working method of the vortex beam antenna is to connect the power divider with the signal transmitter, and provide a radio frequency excitation signal through the signal transmitter to realize the emission of the vortex beam. The technical solution in the present invention can well solve the above-mentioned problems existing in the prior art.

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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Patent Type & Authority Patents(China)
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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