阅读说明：本技术 一种高增益5g毫米波段法布里珀罗阵列天线 (High-gain 5G millimeter wave band Fabry-Perot array antenna ) 是由 李岳洲 胡南 吴心仪 于 2020-12-14 设计创作，主要内容包括：本发明涉及一种高增益5G毫米波段法布里珀罗阵列天线,包括：顶层介质板、反射贴片层、底层介质板、金属接地板、同轴电缆、空气腔体；所述反射贴片层印制在顶层介质板上,且反射贴片层位于顶层介质板的下方；所述金属接地板印制在底层介质板上,且金属接地板位于底层介质板的下方；所述同轴电缆贯穿金属接地板、底层介质板；所述空气腔体位于顶层介质板与底层介质板之间；本发明通过对高增益5G毫米波段法布里珀罗阵列天线的改进,具有设计合理,天线阵列的增益大幅提高、辐射特性较好,使得整个天线阵列在5G毫米波的24.5GHz-29.5GHz可以高效率的接收无线信号的优点,从而有效的解决了本发明提出的问题和不足。(The invention relates to a high-gain 5G millimeter wave band Fabry-Perot array antenna, which comprises: the device comprises a top dielectric plate, a reflective patch layer, a bottom dielectric plate, a metal ground plate, a coaxial cable and an air cavity; the reflection patch layer is printed on the top dielectric slab and is positioned below the top dielectric slab; the metal grounding plate is printed on the bottom layer dielectric plate and is positioned below the bottom layer dielectric plate; the coaxial cable penetrates through the metal grounding plate and the bottom layer dielectric plate; the air cavity is positioned between the top dielectric slab and the bottom dielectric slab; the high-gain 5G millimeter wave band Fabry-Perot array antenna has the advantages of reasonable design, great improvement of the gain of the antenna array, better radiation characteristic and capability of efficiently receiving wireless signals by the whole antenna array at 24.5GHz-29.5GHz of 5G millimeter waves, thereby effectively solving the problems and the defects provided by the invention.)

1. A high gain 5G millimeter wave band Fabry-Perot array antenna, comprising: the chip comprises a top dielectric plate (1), a reflective patch layer (2), a bottom dielectric plate (3), a metal grounding plate (4), a coaxial cable (5) and an air cavity (6); the method is characterized in that: the reflection patch layer (2) is printed on the top dielectric plate (1), and the reflection patch layer (2) is positioned below the top dielectric plate (1); the metal grounding plate (4) is printed on the bottom layer dielectric plate (3), and the metal grounding plate (4) is positioned below the bottom layer dielectric plate (3); the coaxial cable (5) penetrates through the metal grounding plate (4) and the bottom layer dielectric plate (3); the air cavity (6) is positioned between the top-layer dielectric slab (1) and the bottom-layer dielectric slab (3).

2. The method of claim 1, wherein: the top dielectric slab (1) and the bottom dielectric slab (3) are both of square plate structures, the side lengths of the top dielectric slab (1) and the bottom dielectric slab (3) are 27.3mm, the thicknesses of the top dielectric slab (1) and the bottom dielectric slab (3) are 1.13mm, and the dielectric constant is 2.2.

3. The method of claim 1, wherein: the reflection patch layer (2) is composed of 36 square reflection units with the side length of 4.55mm, the reflection units are distributed below the top dielectric plate (1) in a rectangular array shape, the internal reflection structure of each reflection unit is a square ring with the side length of 4.2mm, and the width of each square ring is 0.42 mm.

4. The method of claim 1, wherein: the thickness of the air cavity (6) is 4.75 mm.

5. The method of claim 1, wherein: the coaxial cable (5) is positioned at the center positions of the bottom layer dielectric plate (3) and the metal grounding plate (4).

Technical Field

The invention relates to the technical field of array antennas, in particular to a high-gain 5G millimeter waveband Fabry-Perot array antenna.

Background

At present, with the rapid development of wireless communication technology, the variety of antennas is increasing, especially in microwave and millimeter wave frequency bands, and the fabry perot antenna has a good characteristic of simple structure and good effect, and has gained wide attention.

However, the fabry-perot antenna still belongs to a resonant structure, the impedance bandwidth and the gain bandwidth of the fabry-perot antenna are narrow, the gain effect of the antenna array is poor, and the application of the fabry-perot antenna in more fields is limited.

In view of the above, the present invention provides a high-gain 5G millimeter wave band fabry-perot array antenna, which is developed to solve the problems and improve the practical value.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a high-gain 5G millimeter waveband Fabry-Perot array antenna.

In order to achieve the purpose, the invention adopts the technical scheme that: a high gain 5G millimeter wave band Fabry-Perot array antenna, comprising: the device comprises a top dielectric plate, a reflective patch layer, a bottom dielectric plate, a metal ground plate, a coaxial cable and an air cavity; the reflection patch layer is printed on the top dielectric slab and is positioned below the top dielectric slab; the metal grounding plate is printed on the bottom layer dielectric plate and is positioned below the bottom layer dielectric plate; the coaxial cable penetrates through the metal grounding plate and the bottom layer dielectric plate; the air cavity is positioned between the top dielectric slab and the bottom dielectric slab.

As a further optimization of the technical scheme, the top dielectric plate and the bottom dielectric plate of the high-gain 5G millimeter wave band fabry-perot array antenna are both square plate-shaped structures, the side lengths of the top dielectric plate and the bottom dielectric plate are 27.3mm, the thicknesses of the top dielectric plate and the bottom dielectric plate are 1.13mm, and the dielectric constant is 2.2.

As a further optimization of the technical scheme, the reflection patch layer of the high-gain 5G millimeter wave band fabry-perot array antenna of the present invention is composed of 36 square reflection units with a side length of 4.55mm, the reflection units are distributed below the top dielectric plate in a rectangular array, an internal reflection structure of the reflection unit is a square ring with a side length of 4.2mm, and the width of the square ring is 0.42 mm.

As further optimization of the technical scheme, the thickness of the air cavity of the high-gain 5G millimeter waveband Fabry-Perot array antenna is 4.75 mm.

As a further optimization of the technical scheme, the coaxial cable of the high-gain 5G millimeter wave band fabry-perot array antenna is positioned at the center of the bottom dielectric slab and the metal ground plate.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

1. the air cavity is positioned on the top dielectric plate and the bottom dielectric plate, the thickness of the air cavity is 4.75mm, the coaxial cable is positioned at the center positions of the bottom dielectric plate and the metal grounding plate, and electromagnetic waves are reflected for multiple times by the air cavity and the reflection patch layer structure to form phase superposition at the top antenna unit, so that the gain of the antenna array is greatly improved.

2. The high-gain 5G millimeter wave band Fabry-Perot array antenna has the advantages of reasonable design, great improvement of the gain of the antenna array, better radiation characteristic and capability of efficiently receiving wireless signals by the whole antenna array at 24.5GHz-29.5GHz of 5G millimeter waves, thereby effectively solving the problems and the defects provided by the invention.

Drawings

The technical scheme of the invention is further explained by combining the accompanying drawings as follows:

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a side view of the present invention;

FIG. 4 is a graph illustrating the core reflection coefficient of the array antenna of the present invention;

FIG. 5 is a schematic diagram of the E-plane and H-plane of the antenna array of the present invention at 24.5 GHz;

FIG. 6 is a schematic diagram of the E-plane and H-plane of the antenna array of the present invention at 25.5 GHz;

fig. 7 is an E-plane and H-plane pattern of the antenna array of the present invention at 26.5 GHz;

fig. 8 is an E-plane and H-plane pattern of the antenna array of the present invention at 28.5 GHz;

FIG. 9 is a plot of the frequency gain of the present invention over the entire 24.5GHz-29.5GHz frequency.

Wherein: the chip comprises a top dielectric plate 1, a reflection patch layer 2, a bottom dielectric plate 3, a metal ground plate 4, a coaxial cable 5 and an air cavity 6.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments.

A high gain 5G millimeter wave band fabry-perot array antenna according to the present invention as shown in fig. 1-9 comprises: the device comprises a top dielectric plate 1, a reflective patch layer 2, a bottom dielectric plate 3, a metal ground plate 4, a coaxial cable 5 and an air cavity 6; the reflective patch layer 2 is printed on the top dielectric slab 1, and the reflective patch layer 2 is positioned below the top dielectric slab 1; the metal grounding plate 4 is printed on the bottom layer dielectric plate 3, and the metal grounding plate 4 is positioned below the bottom layer dielectric plate 3; the coaxial cable 5 penetrates through the metal grounding plate 4 and the bottom layer dielectric plate 3; the air cavity 6 is located between the top dielectric plate 1 and the bottom dielectric plate 3.

Specifically, the top dielectric slab 1 and the bottom dielectric slab 3 are both square plate-shaped structures, the side length of the top dielectric slab 1 and the bottom dielectric slab 3 is 27.3mm, the thickness of the top dielectric slab 1 and the bottom dielectric slab 3 is 1.13mm, and the dielectric constant is 2.2.

Specifically, the reflective patch layer 2 is composed of 36 square reflective units with a side length of 4.55mm, the reflective units are distributed in a rectangular array below the top dielectric slab 1, the internal reflective structure of each reflective unit is a square ring with a side length of 4.2mm, and the width of each square ring is 0.42 mm.

Specifically, the air cavity 6 has a thickness of 4.75 mm.

Specifically, the coaxial cable 5 is located at the center of the bottom dielectric plate 3 and the metal ground plate 4.

The method comprises the following specific implementation steps:

it can be seen from fig. 4 that the central operating frequency of the present array coincides with the resonance point of the curve of S11 at 26.8 GHz. As can be seen from the directional diagrams of the antennas shown in fig. 5, 6, 7 and 8 at 24.5GHz,25.5GHz,26.5GHz and 28.5GHz, the main lobe direction of the array antenna points at an angle of 0 degree accurately, and the actual result conforms to the design requirement. The gain of the antenna is higher than 9.5dBi at the frequency points, so that the antenna has better radiation characteristic; it can be seen from fig. 9 that the highest gain of the array reaches 17.8dBi in the entire frequency band of 24.5Ghz-29.5Ghz, and the 24.5Ghz and 29.5Ghz at the edge also have gains of 9.2dBi and 6dBi respectively, which are completely higher than the gain of 2dBi of the common terminal antenna, so that the entire antenna array can efficiently receive wireless signals at 24.5Ghz-29.5Ghz of 5G millimeter waves.

The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.