CN112909518A

CN112909518A - Pattern programmable metamaterial antenna array design method

Info

Publication number: CN112909518A
Application number: CN201911130723.2A
Authority: CN
Inventors: 杨华斌; 雷东
Original assignee: Beijing Daogu Vision Technology Co ltd
Current assignee: Beijing Daogu Vision Technology Co ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2021-06-04

Abstract

The invention provides a design method of a directional diagram programmable metamaterial antenna array, which comprises a single radiation unit, wherein a radiation patch is positioned at the top of a feed waveguide slot, a metamaterial layer is arranged between the waveguide slot and the radiation patch, electromagnetic waves excite the radiation patch through the slot, the radiation patch radiates the electromagnetic waves to space, and the electromagnetic waves are superposed in the space to form a beam required to point by accurately regulating and controlling the amplitude and the phase of the units in the array.

Description

Pattern programmable metamaterial antenna array design method

Technical Field

The invention relates to the technical field of metamaterial array antennas, in particular to a directional diagram programmable metamaterial antenna array design method.

Background

The antenna is an important element for transmitting and receiving electromagnetic wave energy in wireless transmission, so that a user can smoothly transmit information by using a wireless communication system without being limited by terrain. The design method and the material of the antenna applied to various products are different at present. The proper antenna is selected, which is beneficial to improving the transmission characteristic and reducing the production cost.

The phased array antenna spacing is affected by the scan angle, the purpose of the spacing design is to control the array sidelobe level, and the antenna element spacing decreases appropriately as the scan angle increases.

The directional diagram programmable metamaterial array antenna is an antenna with an array structure, each antenna unit accurately and independently regulates and controls the radiation state of each unit through a driving system, and radiation fields are interfered and superposed in a specific direction to form a beam required to be directed. The regulation and control of the radiation intensity of each unit are realized by a driving circuit system, and phase difference exists between the units

，

Involving conduction of the feed into the phase difference

And the difference of the wave path of the space radiation

（

). The beam pointing deflection is realized by controlling the phase difference of the units and the radiation intensity. The spatial radiation wave path difference is determined by the unit arrangement mode. The unit arrangement mode determines the phase control precision, if the unit arrangement is too dense, the coupling between the units is correspondingly increased, and the arrangement is too sparse, so that the phase control precision is low.

Disclosure of Invention

The invention provides a method for designing a directional diagram programmable metamaterial antenna array, which aims to solve the problems mentioned in the technical problems.

In order to achieve the purpose, the technical scheme of the invention is as follows: a method for designing a directional diagram programmable metamaterial antenna array comprises a single radiation unit, wherein a radiation patch is positioned at the top of a feed waveguide slot, a metamaterial layer is arranged between the waveguide slot and the radiation patch, electromagnetic waves excite the radiation patch through the slot, the radiation patch radiates the electromagnetic waves to space, and the electromagnetic waves are superposed in the space by accurately regulating and controlling the amplitude and the phase of units in the array to form a beam required to be directed.

Preferably, the array arrangement is an equilateral triangle arrangement, the equilateral triangle array arrangement includes unit distribution shapes and relative distances between units, the units are distributed at three vertexes of the equilateral triangle, and the distance between each unit is determined by the transmission wavelength.

Preferably, the array arrangement mode is a rectangular arrangement mode, the rectangular array arrangement mode comprises unit distribution shapes, and transverse distances and longitudinal distances among the units, and the transverse distances and the longitudinal distances among the units are determined by the transmission wavelengths.

Preferably, the array arrangement mode is an annular arrangement mode, the annular array arrangement mode comprises a unit distribution shape, an annular interval and a mode that an outer ring is inserted into a unit, the unit is distributed on concentric rings, and the interval of the concentric rings is determined by the transmission wavelength.

Compared with the prior art: the invention provides the arrangement mode of the directional diagram programmable metamaterial array antenna unit, the arrangement mode of the array unit comprises equilateral triangle array arrangement, rectangular array arrangement and annular array arrangement, each arrangement mode can realize the control of an antenna array directional diagram through a corresponding algorithm, and the provided programmable metamaterial array antenna array arrangement mode has lower unit coupling correspondence and more accurate array phase regulation and control.

Drawings

FIG. 1 is a diagram of a directional diagram programmable metamaterial array antenna unit structure according to the present invention;

FIG. 2 is an equilateral triangular array layout of the directional diagram programmable metamaterial array antenna of the present invention;

FIG. 3 is a schematic diagram of a rectangular array layout of a directional pattern programmable metamaterial array antenna in accordance with the present invention;

fig. 4 shows a circular array layout of the directional diagram programmable metamaterial array antenna of the present invention.

Detailed Description

As shown in fig. 1, the array of the directional diagram programmable metamaterial array antenna is composed of a single radiating element, a radiating patch is located at the top of a feed waveguide slot, a metamaterial layer is arranged between the waveguide slot and the radiating patch, electromagnetic waves excite the radiating patch through the slot, the radiating patch radiates the electromagnetic waves to the space, and the electromagnetic waves are superposed in the space by accurately regulating and controlling the amplitude and the phase of the elements in the array to form a beam which needs to be directed.

As shown in fig. 2, one embodiment of the present invention providing an arrangement of units of the omnidirectional programmable metamaterial array is an equilateral triangle array arrangement, which includes an arrangement shape and unit spacing, the units are distributed at three vertices of an equilateral triangle, and the spacing between each unit is determined by a transmission wavelength.

As shown in fig. 3, one embodiment of the invention providing an arrangement manner of units of the omnidirectional programmable metamaterial array is a rectangular array arrangement manner, wherein the units are arranged in a rectangular manner, and the transverse spacing and the longitudinal spacing between the units are determined by the transmission wavelength.

As shown in fig. 4, an embodiment of the present invention providing an array configuration manner of units of an omnidirectional programmable metamaterial array is a circular array configuration manner, the units are distributed on concentric rings, the distance between the concentric rings is determined by a conduction wavelength, a blank area needs to be supplemented as the radius of the rings increases, and as the radius increases, when the arc length between two units on the same arc exceeds λ/3, a unit needs to be inserted between the two units.

Finally, it should be noted that the above-mentioned embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. The method for designing the directional diagram programmable metamaterial antenna array is characterized by comprising the following steps of: the antenna array is composed of a single radiation unit, a radiation patch is positioned at the top of a feed waveguide slot, a metamaterial layer is arranged between the waveguide slot and the radiation patch, electromagnetic waves pass through the slot to excite the radiation patch, the radiation patch radiates the electromagnetic waves to the space, and the electromagnetic waves are overlapped in the space to form a beam required to point by accurately regulating and controlling the amplitude and the phase of the unit in the array.

2. The pattern programmable metamaterial antenna array design method of claim 1, wherein: the array arrangement mode is an equilateral triangle arrangement mode, the equilateral triangle array arrangement mode comprises unit distribution shapes and relative intervals among units, the units are distributed on three vertexes of an equilateral triangle, and the interval between every two units is determined by the transmission wavelength.

3. The pattern programmable metamaterial antenna array design method of claim 1, wherein: the array arrangement mode is a rectangular arrangement mode, the rectangular array arrangement mode comprises unit distribution shapes and transverse distances and longitudinal distances among the units, and the transverse distances and the longitudinal distances among the units are determined by the transmission wavelengths.

4. The pattern programmable metamaterial antenna array design method of claim 1, wherein: the array arrangement mode is an annular arrangement mode, the annular array arrangement mode comprises a unit distribution shape, an annular interval and a mode that an outer circular ring is inserted into a unit, the unit is distributed on concentric circular rings, and the interval of the concentric circular rings is determined by the transmission wavelength.