阅读说明：本技术 双极化fad辐射单元 (Dual-polarization FAD radiating element ) 是由 田佰文 任源朋 孙彦明 谢晖 于 2019-11-05 设计创作，主要内容包括：本发明提供一种双极化FAD辐射单元,包括馈电连接片上、馈电连接片下、介质固定件、辐射体和馈电连接底座；其中,所述辐射体的外轮廓包括多个辐射面；每个所述辐射面内部镂空,所述镂空为由上下两个圆弧面构成的中空结构,每个所述圆弧面的中间位置有一个圆形通孔；所述辐射体固定在所述馈电连接底座上；所述馈电连接片上和所述馈电连接片下镶嵌在所述介质固定件上；所述介质固定件连同镶嵌在其上的馈电连接片上和馈电连接片下安装在所述馈电连接底座的通孔内。本发明通过在辐射元内部采用眼球形的镂空孔,增加辐射面电路路径,扩展频带带宽,改善频带内的驻波以及隔离度,使得辐射元的尺寸相对减小,装配简单,焊接方便。(The invention provides a dual-polarization FAD radiating unit which comprises a feed connecting sheet, a dielectric fixing piece, a radiating body and a feed connecting base, wherein the feed connecting sheet is arranged below the dielectric fixing piece; wherein the outer contour of the radiator comprises a plurality of radiating surfaces; each radiation surface is internally hollowed, the hollow part is of a hollow structure consisting of an upper arc surface and a lower arc surface, and a circular through hole is formed in the middle of each arc surface; the radiator is fixed on the feed connection base; the feed connecting sheet and the feed connecting sheet are embedded on the medium fixing piece; the medium fixing piece, the feed connecting piece embedded on the medium fixing piece and the feed connecting piece are arranged in the through hole of the feed connecting base. The invention adopts the eyeball-shaped hollow hole in the radiation element, increases the circuit path of the radiation surface, expands the bandwidth of the frequency band, and improves the standing wave and the isolation degree in the frequency band, so that the size of the radiation element is relatively reduced, the assembly is simple, and the welding is convenient.)

1. A dual-polarization FAD radiating unit is characterized by comprising a feed connecting sheet, a dielectric fixing piece, a radiating body and a feed connecting base;

wherein the outer contour of the radiator comprises a plurality of radiating surfaces;

each radiation surface is internally hollowed, the hollow part is of a hollow structure consisting of an upper arc surface and a lower arc surface, and a circular through hole is formed in the middle of each arc surface;

the radiator is fixed on the feed connection base;

the feed connecting sheet and the feed connecting sheet are embedded on the medium fixing piece;

the medium fixing piece, the feed connecting piece embedded on the medium fixing piece and the feed connecting piece are arranged in the through hole of the feed connecting base.

2. The dual polarized FAD radiating element according to claim 1, characterized in that the outer contour of the radiator comprises four rectangular radiating surfaces;

the four rectangular radiating surfaces are positioned in the same plane and arranged in a shape like a Chinese character 'tian'.

3. The dual polarized FAD radiating element according to claim 2, characterized in that the end points of the circular arc surface are located on the diagonal of the rectangular radiating surface;

the direction of the arc surface is perpendicular to the polarization direction of the radiation unit;

for any one of the arc surfaces, the circular hole in the middle of the arc surface is tangent with the arc surface at the middle position of the arc surface.

4. The dual polarized FAD radiating element according to claim 2, characterized in that a rectangular gap is formed between two adjacent rectangular radiating surfaces, and all the rectangular gaps form a cross shape;

the cross-shaped rectangular gap penetrates through the radiating body and the upper part of the feed connection base and is closed at the lower part of the feed connection base;

the lower part of the feed connection base is used for connecting the four rectangular radiation surfaces into a whole.

5. The dual polarized FAD radiating element according to any one of claims 1 to 4, characterized in that there are four symmetrical through holes in the center of the feed connection base, the through holes are near the center of the feed connection base and extend through the entire feed connection base;

a threaded hole is formed in the center of the feed connection base and used for fixing the feed connection base with the reflecting plate;

and the feed connecting sheet are inserted into four through holes in the middle of the feed connecting base after being fixed by the medium fixing piece.

6. The dual polarized FAD radiating element according to any one of claims 1 to 4, wherein the feeding connecting tabs and the feeding connecting tabs are both U-shaped;

the U-shaped structure comprises a long arm end and a short arm end;

the long arm end penetrates through the through hole of the whole feed connection base;

the length of the short arm end is smaller than that of the long arm end, and the short arm end is inserted into the through hole of the feed connection base;

the U-shaped structure is attached with matching branches.

7. The dual polarized FAD radiating element according to claim 6, characterized in that the top view profile of the dielectric fixture is a rectangular cross;

four centrosymmetric medium cylinders are arranged below the medium fixing piece;

a through hole is formed in each dielectric cylinder, the shape of the through hole in each dielectric cylinder is the same as the cross section of the feed connecting sheet and the cross section of the through hole under the feed connecting sheet, and the through holes are used for being inserted into the feed connecting sheet and the feed connecting sheet;

the dielectric cylinder is inserted into the through hole of the feed connection base.

8. The dual polarized FAD radiating element according to claim 7, characterized in that at each of the four end points of the cross shape of the rectangular cross there is a snap fastener, and the snap fasteners at the end points are used to fix the dielectric holder to the radiating surface.

9. The dual polarized FAD radiating element of claim 6, wherein the feeding connection pads and the feeding connection pads are at an angle of 90 degrees with each other, and the feeding connection pads are vertically arranged.

10. The dual polarized FAD radiating element according to claim 9, characterized in that two pairs of staggered fasteners are disposed inside the dielectric fixing member, and two pairs of staggered fasteners are spatially distributed up and down, wherein an upper pair of the fasteners is used for fixing the feeding connecting piece, and a lower pair of the fasteners is used for fixing the feeding connecting piece; the two pairs of buckles mutually form an included angle of 90 degrees.

Technical Field

The invention belongs to the technical field of mobile communication, and particularly relates to a dual-polarization FAD radiating unit.

Background

With the rapid development of mobile communication technology, the demand of people for mobile communication data is increasing, and with the increasing popularization of 4G networks, the original communication bandwidth cannot meet the demand, the bandwidth of the D band has been increased from 60M to 100M at present, and the demand of the D band communication bandwidth of 160M has been proposed, so how to expand the communication bandwidth of the D band becomes a major problem to be solved at present.

The inside fretwork of traditional FAD radiating element generally adopts full fretwork or simple linear type fretwork, and this kind of traditional radiating element fretwork is simple relatively in inner structure, but this kind of single structure leads to the current path relatively single, and the bandwidth in the frequency band is narrower, leads to this kind of radiating element can not satisfy up-to-date spread spectrum demand. In addition, for the radiating element in a fully hollow or simple linear hollow mode, the physical size is the full size of the half-wave oscillator. The traditional radiating element adopts a direct feeding mode, namely, the feeding and radiating elements are directly welded. The welding assembly is complex, the welding is time-consuming and labor-consuming, and the phenomena of short circuit, wire drawing and the like are easy to occur in the welding process, so that the high-efficiency assembly of a production line is not facilitated.

Disclosure of Invention

In order to overcome the problems of narrow bandwidth and complex assembly in the frequency band of the existing FAD radiating element or at least partially solve the problems, embodiments of the present invention provide a dual-polarized FAD radiating element.

According to a first aspect of the embodiments of the present invention, a dual-polarization FAD radiating element is provided, which includes a feed connecting sheet, a dielectric fixing member, a radiator, and a feed connecting base;

wherein the outer contour of the radiator comprises a plurality of radiating surfaces;

each radiation surface is internally hollowed, the hollow part is of a hollow structure consisting of an upper arc surface and a lower arc surface, and a circular through hole is formed in the middle of each arc surface;

the radiator is fixed on the feed connection base;

the feed connecting sheet and the feed connecting sheet are embedded on the medium fixing piece;

the medium fixing piece, the feed connecting piece embedded on the medium fixing piece and the feed connecting piece are arranged in the through hole of the feed connecting base.

Preferably, the outer contour of the radiator includes four rectangular radiating surfaces;

the four rectangular radiating surfaces are positioned in the same plane and arranged in a shape like a Chinese character 'tian'.

Preferably, the end point of the arc surface is located on the diagonal line of the rectangular radiation surface;

the direction of the arc surface is perpendicular to the polarization direction of the radiation unit;

for any one of the arc surfaces, the circular hole in the middle of the arc surface is tangent with the arc surface at the middle position of the arc surface.

Preferably, a rectangular gap is formed between two adjacent rectangular radiation surfaces, and all the rectangular gaps form a cross shape;

the cross-shaped rectangular gap penetrates through the radiating body and the upper part of the feed connection base and is closed at the lower part of the feed connection base;

the lower part of the feed connection base is used for connecting the four rectangular radiation surfaces into a whole.

Preferably, the center of the feed connection base is provided with four symmetrical through holes, and the through holes are close to the center of the feed connection base and penetrate through the whole feed connection base;

a threaded hole is formed in the center of the feed connection base and used for fixing the feed connection base with the reflecting plate;

and the feed connecting sheet are inserted into four through holes in the middle of the feed connecting base after being fixed by the medium fixing piece.

Preferably, the feeding connecting sheet and the lower part of the feeding connecting sheet are both U-shaped structures;

the U-shaped structure comprises a long arm end and a short arm end;

the long arm end penetrates through the through hole of the whole feed connection base;

the length of the short arm end is smaller than that of the long arm end, and the short arm end is inserted into the through hole of the feed connection base;

the U-shaped structure is attached with matching branches.

Preferably, the top-view appearance of the medium fixing piece is a rectangular cross;

four centrosymmetric medium cylinders are arranged below the medium fixing piece;

a through hole is formed in each dielectric cylinder, the shape of the through hole in each dielectric cylinder is the same as the cross section of the feed connecting sheet and the cross section of the through hole under the feed connecting sheet, and the through holes are used for being inserted into the feed connecting sheet and the feed connecting sheet;

the dielectric cylinder is inserted into the through hole of the feed connection base.

Preferably, four end points of the cross shape of the rectangular cross are respectively provided with a buckle, and the buckles at the end points are used for fixing the medium fixing piece and the radiation surface.

Preferably, the feeding connecting sheet and the feeding connecting sheet mutually form an included angle of 90 degrees, and the feeding connecting sheet are of an upper structure and a lower structure.

Preferably, two pairs of staggered buckles are arranged in the medium fixing piece, the two pairs of staggered buckles are distributed up and down in space, the upper pair of buckles are used for fixing the feeding connecting sheet, and the lower pair of buckles are used for fixing the lower part of the feeding connecting sheet; the two pairs of buckles mutually form an included angle of 90 degrees.

The embodiment of the invention provides a dual-polarization FAD radiating unit, which increases a circuit path of a radiating surface, expands the bandwidth of a frequency band, and improves standing waves and isolation in the frequency band by adopting an eyeball-shaped hollow hole in a radiating element, so that the size of the radiating element is relatively reduced, the assembly is simple, and the welding is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic perspective exploded view of a dual-polarization FAD radiating element according to an embodiment of the present invention;

fig. 2 is a schematic front top view structure diagram of a dual-polarization FAD radiating element provided in an embodiment of the present invention;

fig. 3 is a schematic side view of a dual polarization FAD radiating element according to an embodiment of the present invention;

the feed connection piece is connected on the feed connection piece, the dielectric fixing piece is connected on the feed connection piece, the radiator is connected on the dielectric fixing piece, the radiator is connected on the feed connection piece, the radiating body is.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

In an embodiment of the present invention, a dual-polarized FAD radiation unit is provided, and fig. 1 is a schematic diagram of a three-dimensional explosion structure of the dual-polarized FAD radiation unit provided in the embodiment of the present invention, including a feeding connection sheet 1, a feeding connection sheet lower 2, a dielectric fixing member 3, a radiator 4, and a feeding connection base 6;

wherein, the outer contour of the radiator 4 comprises a plurality of radiation surfaces; preferably, the outer contour of the radiator 4 includes four rectangular radiating surfaces, and the four rectangular radiating surfaces are located in the same plane and arranged in a matrix shape, as shown in fig. 2. Preferably, the rectangular radiation surface is a square radiation surface, the radiation surface is arranged at the upper part of the radiation unit, the bottoms of the four radiation surfaces are connected by using the feed connection base 6, and the feed connection base 6 is an integral die-casting structure. The center of the feed connection base 6 is provided with a threaded hole 7 fixedly connected with the reflecting plate.

Each radiation surface is internally hollowed, the hollowed-out part is of a hollow structure consisting of an upper arc surface and a lower arc surface, a circular through hole is formed in the middle of each arc surface, and the upper arc surface and the lower arc surface and a circular hole in the middle of each arc surface form an eyeball-shaped hollowed-out hole 5. The structural characteristic can effectively improve standing waves in a frequency band to realize broadband and miniaturization performance.

The aperture in circular hole has decided the frequency range of radiation element at the high frequency channel in this embodiment, and two upper and lower arc surfaces that constitute the fretwork have decided the scope of radiation element low frequency channel, consequently can be as required nimble change about two arc surfaces and the circular arc surface the size of circular hole, and then change the threshold value of radiation element high frequency channel and low frequency channel.

Preferably, the end points of the circular arc surfaces are located on the diagonal line of the rectangular radiation surface, the direction of the circular arc surfaces is perpendicular to the polarization direction of the radiation unit, and the circular hole in the middle of the two circular arc surfaces is tangent to the two circular arc surfaces at the middle position of the circular arc surfaces. Compared with the traditional radiation surface in linear hollow or full hollow, the eyeball-shaped hollow structure in the radiation surface has more diversified current paths, so that the radiation surface has wider impedance bandwidth, and the arc has a longer current path relative to the linear, so that the size of the radiation unit is relatively reduced.

The radiator 4 is fixed on the feed connection base 6; the feed connecting sheet 1 and the feed connecting sheet lower part 2 are embedded on the medium fixing piece 3; the medium fixing piece 3 is installed in the through hole of the feed connection base 6 together with the feed connection piece 1 and the feed connection piece lower 2 which are embedded on the medium fixing piece.

Preferably, the upper feed connecting piece 1 and the lower feed connecting piece 2 are fixed on the medium fixing piece 3 and form an included angle of 90 degrees with each other, and the upper feed connecting piece 1 and the lower feed connecting piece 2 are of an upper-lower structure.

PreferablyCentral frequency wavelength of FAD radiation element is lambda₀The total length of the radiating arm of the radiating element is 0.9 x (lambda)₀/2)。

The embodiment increases the circuit path of the radiation surface by adopting the spherical hollow hole inside the radiation element, expands the bandwidth of the frequency band, and improves the standing wave and the isolation degree in the frequency band, so that the size of the radiation element is relatively reduced, the assembly is simple, and the welding is convenient.

On the basis of the above embodiment, as shown in fig. 3, in this embodiment, a rectangular gap is formed between two adjacent rectangular radiation surfaces, and all the rectangular gaps are cross-shaped when viewed from the external shape; the cross-shaped gap penetrates through the radiator 4 and the upper part of the feed connection base 6, is closed at the lower part of the feed connection base 6, and is used for connecting four rectangular radiation surfaces into a whole.

On the basis of the above embodiments, in this embodiment, four symmetrical through holes are formed in the center of the feed connection base 6, and the through holes are close to the center of the feed connection base 6 and penetrate through the whole feed connection base 6; preferably, the feed connection base 6 is rectangular in shape, and four symmetrical cylindrical through holes are formed in the middle of the feed connection base, and the four through holes correspond to the four radiation surfaces of the radiator 4 one by one, are close to the physical center of the radiation unit, and are symmetrically distributed. And a threaded hole is formed in the center of the feed connection base 6 and used for fixing the feed connection base with the reflecting plate.

And the feed connecting sheet 1 and the feed connecting sheet lower 2 are inserted into four through holes in the middle of the feed connecting base 6 after being fixed by the medium fixing piece 3.

On the basis of the above embodiment, in this embodiment, the feeding connection piece 1 and the feeding connection piece lower 2 are both U-shaped structures; the U-shaped structure comprises a long arm end and a short arm end; the long arm end penetrates through the through hole of the whole feed connection base 6; the length of the short arm end is smaller than that of the long arm end, and the short arm end is inserted into the through hole of the feed connection base 6; the U-shaped structure is attached with matching branches.

Wherein, two arms of the U-shaped structure are one long and one short, and the length of the short arm end is less than that of the long arm end. Preferably, the length of the short arm end is about half of that of the long arm end, and the length can be adjusted according to actual conditions; the cross sections of the feeding connecting sheet 1 and the feeding connecting sheet lower part 2 are rectangular. In addition, the U-shaped structure is additionally provided with a rectangular matching branch, and the position and the size of the matching branch can be adjusted to effectively improve the input impedance of the radiating element.

On the basis of the above embodiment, the top view appearance of the medium fixing member 3 in this embodiment is a rectangular cross; four centrosymmetric medium cylinders are arranged below the medium fixing piece 3; each medium cylinder is internally provided with a through hole, the shape of the through hole in each medium cylinder is the same as the cross section of the feeding connecting sheet 1 and the cross section of the feeding connecting sheet lower 2, and the through holes are used for being inserted into the feeding connecting sheet 1 and the feeding connecting sheet lower 2 if the through holes are rectangular; the dielectric cylinder is inserted into the through hole of the feed connection base 6.

On the basis of the above embodiment, in this embodiment, there is one buckle respectively at four end points of the cross shape of the cross, and the buckles at the end points are used to fix the medium fixing member 3 and the radiation surface, so that the medium fixing member 3 does not separate from the radiator 4.

On the basis of the above embodiment, in this embodiment, two pairs of staggered buckles are arranged inside the dielectric fixing member 3, the two pairs of buckles are distributed vertically in space, the upper pair of buckles is used for fixing the feeding connection piece 1, and the lower pair of buckles is used for fixing the feeding connection piece lower 2; the two pairs of buckles mutually form an included angle of 90 degrees. Through fixing feed connection piece 1 and feed connection piece 2 down in the buckle for feed connection piece 1 also is 90 degrees contained angles with feed connection piece 2 down, and is upper and lower distribution in the space. And finally, the feed connecting sheet 1, the feed connecting sheet lower part 2 and the medium fixing piece 3 are jointly fixed in a through hole of the feed connecting base 6.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.