CN115939745A - Wide-beam broadband miniaturized antenna - Google Patents

Abstract

The invention belongs to the technical field of antennas, and particularly relates to a wide-beam broadband miniaturized antenna which comprises a dielectric antenna plate, a metalized central through hole, a non-metalized dividing line and a metal radiation surface, wherein the metalized central through hole, the non-metalized dividing line and the metal radiation surface are arranged on the dielectric antenna plate, the metal radiation surface is fixedly connected to the dielectric antenna plate, the metalized central through hole is arranged in the middle of the metal radiation surface, the non-metalized dividing line divides the metal radiation surface to form a radio-frequency signal radiation unit and a plurality of peripheral metal reflection units, the radio-frequency signal radiation unit and the peripheral metal reflection units are both positioned on the same horizontal plane, a plurality of feed holes for outputting radio-frequency signals are arranged on the radio-frequency signal radiation unit, and at least four grounding holes are arranged on the peripheral metal reflection units. With the above arrangement, the miniaturized antenna in the present application can be miniaturized without relying on a material for increasing the dielectric constant, thereby greatly reducing the weight of the miniaturized antenna.

Description

Wide-beam broadband miniaturized antenna

Technical Field

The invention belongs to the technical field of antennas, and particularly relates to a wide-beam broadband miniaturized antenna.

Background

With the development of global satellite navigation systems, real-time navigation gradually enters thousands of households, personal portable devices are increasingly demanded, and the traditional high-precision positioning antenna is too large in size or cannot reduce the weight even if the size is small.

Dielectric materials adopted by the traditional GNSS antenna technology require that the antenna has a certain area and volume, and the miniaturized antenna required in application cannot utilize conventional low-dielectric-constant materials to design the miniaturized antenna, in the prior art, the smaller the antenna is, the higher the dielectric constant of the required materials is, but the high-dielectric-constant materials need to be added with other materials on a substrate to improve the dielectric constant, the stability and consistency of the dielectric constant of the high-dielectric-constant materials produced by the method are poor, so that the frequency and performance consistency of the antenna are also poor, the mass production is difficult, the later debugging is completely depended, the workload is too large, and the consistency is poor. The high dielectric constant material leads to the dielectric loss tangent of the material to rise along with the addition of other materials, and also leads to the performance reduction of the antenna.

Therefore, a miniaturized antenna is required to be designed to replace the traditional miniaturized antenna, so that the antenna can meet the miniaturization requirement of high-precision application at present as far as possible under the condition of not increasing the dielectric constant and density of materials.

Disclosure of Invention

The invention aims to provide a wide-beam broadband miniaturized antenna, and aims to solve the technical problem that the performance of the miniaturized antenna in the prior art is reduced and the weight cannot be reduced after the miniaturized antenna is miniaturized.

In order to achieve the above object, an embodiment of the present invention provides a wide-beam broadband miniaturized antenna, which includes a dielectric antenna plate, a metalized central through hole, a non-metalized dividing line, and a metal radiation surface fixedly connected to the dielectric antenna plate, where the metalized central through hole is disposed in the middle of the metal radiation surface, the non-metalized dividing line is disposed around the metalized central through hole, and the non-metalized dividing line is connected end to end and sealed, a radio frequency signal radiation unit and a plurality of peripheral metal reflection units are formed on the upper surface of the metal radiation surface divided by the non-metalized dividing line, the radio frequency signal radiation unit and the peripheral metal reflection units are both located on the same horizontal plane, the radio frequency signal radiation unit is provided with a plurality of feed holes for outputting radio frequency signals, and the peripheral metal reflection units are provided with at least four ground holes.

Preferably, the grounding holes are respectively connected with the peripheral metal reflection unit and the reverse side grounding or the PCB ground, the grounding holes are respectively arranged in a pairwise symmetrical mode with the metallization center through hole as the center, and the distances between the two opposite grounding holes and the metallization center through hole are the same.

Preferably, the feed holes are arranged in a central symmetry manner with the metalized central through hole as a symmetry center, the feed holes are communicated with the radio frequency signal radiation unit, and the feed holes are not communicated with the back surface ground or the PCB ground of the dielectric antenna plate.

Preferably, the distance between the ground via and the metallized central via is greater than the distance between the feed via and the metallized central via.

Preferably, the peripheral metal reflection unit may be divided into a plurality of partitions, and each of the grounding holes is located in each of the partitions.

Preferably, each two of the partitions are symmetrically arranged with the metalized central through hole as the center, and each partition is symmetrically arranged with the connecting line of the feed hole and the metalized central through hole as the axis.

Preferably, four peripheral metal reflecting units are arranged, the four peripheral metal reflecting units are arranged at four corners of the matrix in a matrix manner, and each peripheral metal reflecting unit is arranged in a central symmetry manner by taking the metallization central through hole as a circle center.

Preferably, the back surface of the dielectric antenna plate is connected with a metalized ground or a PCB ground.

Preferably, the radio frequency signal radiation unit and the peripheral metal reflection unit are both arranged in a circle center symmetry manner with respect to the metallized central through hole.

Preferably, the external shape of the dielectric antenna plate is circular, quadrilateral or other polygonal shapes.

One or more technical solutions in the broadband miniaturized antenna with a wide beam provided by the embodiment of the present invention have at least one of the following technical effects:

the invention relates to a wide-beam broadband miniaturized antenna which comprises a dielectric antenna plate, a metalized central through hole, a non-metalized dividing line and a metal radiating surface, wherein the metalized central through hole, the non-metalized dividing line and the metal radiating surface are arranged on the dielectric antenna plate, the metal radiating surface is fixedly connected to the dielectric antenna plate, the metalized central through hole is arranged at the central position of the metal radiating surface, the non-metalized dividing line is arranged around the metalized central through hole in an end-to-end connection and surrounding manner, a radio-frequency signal radiating unit and a peripheral metal reflecting unit are formed on the metal radiating surface in a surrounding manner, the radio-frequency signal radiating unit and the peripheral metal reflecting unit are both positioned on the same horizontal plane, feed holes for radio-frequency signals are arranged on the radio-frequency signal radiating unit, a plurality of feed holes are arranged, and the distances from the feed holes to the metalized central through hole are the same, the feed hole outputs radio frequency signals of a required frequency band to a PCB, at least four grounding holes are arranged on a peripheral metal reflecting unit and are respectively connected with the peripheral metal reflecting unit and a reverse side ground or the PCB ground, the combination of the peripheral metal reflecting unit and a bottom plate is equivalent to the increase of the area of a radio frequency signal radiation surface and acts on the radio frequency signal radiation surface through signal coupling, so that the area of the antenna is greatly reduced, the peripheral metal reflecting unit isolates the interference of other signals to a certain extent and acts on other sideband frequencies through compression vertex gain, the bandwidth and the beam width of the antenna are greatly improved, the anti-interference capacity of the antenna is greatly improved, and through the arrangement, the miniaturized antenna in the application is miniaturized without depending on a material with an improved dielectric constant, and the weight of the miniaturized antenna is greatly reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a top view of a wide-beam broadband miniaturized antenna (first embodiment) according to an embodiment of the present invention.

Fig. 2 is a top view of a wide-beam broadband miniaturized antenna (second embodiment) according to an embodiment of the present invention.

Fig. 3 is a top view of a wide-beam broadband miniaturized antenna (third embodiment) according to an embodiment of the present invention.

Fig. 4 is a top view of a wide-beam broadband miniaturized antenna (fourth embodiment) according to an embodiment of the present invention.

Fig. 5 is a top view of a wide-beam broadband miniaturized antenna (fifth embodiment) according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

10-dielectric antenna board 20-metallized central through hole 30-non-metallized dividing line

40-radio frequency signal radiation unit 41-feed hole 50-peripheral metal reflection unit

51-ground hole.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in fig. 1-5, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixed or detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1 to 4, there is provided a wide-beam broadband miniaturized antenna, including adielectric antenna plate 10, a metalized central throughhole 20 disposed on thedielectric antenna plate 10, a non-metalized dividingline 30, and a metal radiating surface fixedly connected to thedielectric antenna plate 10, wherein the metalized central throughhole 20 is disposed in the middle of the metal radiating surface, the metalized central throughhole 20 is communicated with a radio frequencysignal radiating unit 40 and a back ground or a PCB ground, the non-metalized dividingline 30 is disposed end to end around the metalized central throughhole 20 in a closed manner, the non-metalized dividingline 30 has a certain width, the non-metalized dividingline 30 is disposed in an end to end divided manner, the metal radiating surface is divided into regions, the closed non-metalized dividingline 30 is disposed with the metalized central throughhole 20 as a center, the metalized dividingline 30 is formed with the radio frequencysignal radiating unit 40 and a plurality of peripheralmetal reflecting units 50, the radio frequencysignal radiating unit 40 and the peripheralmetal reflecting units 50 are both disposed on the same plane, and thenon-metalized reflecting units 50 and the bottom plate combined with the radio frequency signal radiating surface is coupled by the equivalent area.

As shown in fig. 1 to 4, a plurality offeed holes 41 for outputting radio frequency signals are disposed on the radio frequencysignal radiating unit 40, two or fourfeed holes 41 are disposed, connecting lines between the two or fourfeed holes 41 and the metallized central throughhole 20 are disposed at 90 °, distances from thefeed holes 41 to the metallized central throughhole 20 are the same, thefeed holes 41 are communicated with the radio frequencysignal radiating unit 40, and thefeed holes 41 are disconnected from the back ground or the PCB ground, signals of the radio frequencysignal radiating unit 40 are output to the PCB through the two feed holes, meanwhile, the radio frequencysignal radiating unit 40 is a symmetrical pattern using the connecting lines between the feed holes and the metallized central throughhole 20 as axes, thefeed holes 41 may be metallized holes or non-metallized holes, and output radio frequency signals to the PCB through thefeed holes 41, the peripheralmetal reflecting unit 50 is provided with at least fourfeed holes 51, thefeed holes 51 are metallized holes, thefeed holes 51 are connected with the peripheralmetal reflecting unit 50 and the back ground or the PCB ground, therespective feed holes 51 are disposed symmetrically with respect to the metallized central throughhole 20, therespective feed holes 51 are disposed pairwise symmetrically with the metallized central throughhole 20, distances between thefeed holes 51 and the connecting lines between the metallized central throughhole 20 are equal to the peripheralmetal reflecting unit 20.

The invention provides a wide-beam broadband miniaturized antenna which comprises adielectric antenna plate 10, a metalized central throughhole 20, a non-metalized dividingline 30 and a metal radiating surface which are arranged on thedielectric antenna plate 10, wherein the metal radiating surface is fixed on thedielectric antenna plate 10, wherein the metallized central throughhole 20 is opened at the central position of the metal radiating surface, and non-metallizedsecants 30 are placed circumferentially end-to-end around the metallized central via 20, a radio frequencysignal radiation unit 40 and a peripheralmetal reflection unit 50 are formed on the metal radiation surface, and the rfsignal radiating unit 40 and the peripheralmetal reflecting unit 50 are located on the same horizontal plane, a plurality offeed holes 41 for radio frequency signals are arranged on the radio frequencysignal radiation unit 40, the distance from eachfeed hole 41 to the metallized central throughhole 20 is the same, thefeed hole 41 outputs the radio frequency signal of the required frequency band to the PCB, at least fourgrounding holes 51 are arranged on the peripheralmetal reflection unit 50 and are respectively connected with the peripheralmetal reflection unit 50 and the reverse side grounding or PCB ground, the combination of the peripheralmetal reflection unit 50 and the bottom plate is equivalent to increase the area of the radio frequency signal radiation surface, and acts on the radio frequency signal radiation surface through signal coupling, thereby greatly reducing the area of the antenna, isolating the interference of other signals to a certain extent by the peripheralmetal reflecting unit 50, acting on other sideband frequencies by compressing the peak gain, thereby greatly increasing the bandwidth and beam width of the antenna and greatly improving the anti-interference capability, with the above arrangement, the miniaturized antenna in the present application can be miniaturized without relying on a material for increasing the dielectric constant, thereby greatly reducing the weight of the miniaturized antenna.

In another embodiment of the present invention, as shown in fig. 1 to 4, thegrounding holes 51 are respectively connected to the peripheralmetal reflection unit 50 and the reverse side ground or the PCB ground, and eachgrounding hole 51 is respectively arranged in a pairwise symmetrical manner with the metallization center throughhole 20 as the center, thegrounding holes 51 on the peripheralmetal reflection unit 50 are arranged in a symmetrical manner with a connection line between the centers of thefeeding hole 41 and the metallization center throughhole 20 as the symmetry axis, the distances between eachgrounding hole 51 and the metallization center throughhole 20 which are opposite to each other in a pairwise manner are the same, eightgrounding holes 51 are arranged on the peripheralmetal reflection unit 50, and every fourgrounding holes 51 are arranged in a group, the distances between thegrounding holes 51 on the same group and the centers of the metallization center throughholes 20 are the same, and the distances between eachgrounding hole 51 on different groups of the peripheralmetal reflection units 50 and the centers of the metallization center throughholes 20 are not the same.

In another embodiment of the present invention, as shown in fig. 1 and 4, when only fourfeeding holes 41 are disposed on the peripheralmetal reflection unit 50, and the connecting lines between two sets offeeding holes 41 disposed oppositely are disposed perpendicularly to each other, eachfeeding hole 41 is disposed in central symmetry with the metalized central throughhole 20 as the center of symmetry, thefeeding hole 41 is communicated with the rfsignal radiation unit 40, and thefeeding hole 41 is grounded on the back side of thedielectric antenna board 10 or not communicated with the PCB ground, and thefeeding hole 41 is communicated with the rfsignal radiation unit 40 and disconnected from the back side ground or the PCB ground, and the signal of the rfsignal radiation unit 40 is output to the PCB through thefeeding hole 41, wherein the rfsignal radiation unit 40 is a symmetrical pattern with the connecting line of the centers of thefeeding hole 41 and the metalized central throughhole 20 as the axis.

In another embodiment of the present invention, as shown in fig. 1-4, the distance between theground hole 51 and the metallized central via 20 is greater than the distance between thefeed hole 41 and the metallized central via 20, and anon-metallized split line 30 is provided between theground hole 51 and thefeed hole 41 and the metallized central via 20 to isolate theground hole 51 from thefeed hole 41 and the metallized central via 20.

In another embodiment of the present invention, as shown in fig. 2 to 4, the peripheralmetal reflection units 50 may be divided into a plurality of sub-areas, and theground holes 51 are respectively located in the sub-areas, on the wide beam broadband miniaturized antenna provided with eightground holes 51, the peripheralmetal reflection units 50 separated from the non-metalized dividinglines 30 may be partitioned at intervals according to therespective ground holes 51 by intermittently connecting the non-metalized dividinglines 30 with the edge of thedielectric antenna plate 10, the peripheralmetal reflection units 50 are independent from each other, and each four of the peripheralmetal reflection units 50 are arranged in a group in a central symmetry manner with the metalized central throughhole 20 as a center, and two groups of the peripheralmetal reflection units 50 are arranged in a staggered interval.

In another embodiment of the present invention, as shown in fig. 2 to 4, each sub-area is symmetrically arranged with the metalized central throughhole 20 as the center, each sub-area is symmetrically arranged with the feed hole and the metalized central throughhole 20 as the axis, every four peripheralmetal reflection units 50 uniformly distributed at 90 ° are arranged in a group, and eachgrounding hole 51 is divided to form a plurality of sub-areas independent of each other, or a plurality ofgrounding holes 51 are located on the same peripheralmetal reflection unit 50, thegrounding holes 51 on each sub-area on the same wide beam broadband miniaturized antenna are symmetrically arranged with the connecting line between thefeed hole 41 and the metalized central throughhole 20 as the axis, and according to the position relationship, the increase and decrease of eachgrounding hole 51 on the same wide beam broadband miniaturized antenna always keep a multiple of 4.

In another embodiment of the present invention, as shown in fig. 4 and 5, four peripheralmetal reflection units 50 are provided, and the four peripheralmetal reflection units 50 are arranged at four corners of the matrix in a matrix arrangement, each peripheralmetal reflection unit 50 is arranged in a central symmetry manner with the metallization central throughhole 20 as a center, the four peripheralmetal reflection units 50 are located at four corners of the squaredielectric antenna plate 10, are arranged independently from each other, and are all surrounded by the non-metallization dividinglines 30, wherein the peripheralmetal reflection units 50 at the four corners can be arranged in two, and the two peripheralmetal reflection units 50 at each corner are arranged in a symmetrical manner with the diagonal line of the square wide-beam miniaturized antenna as an axis, so that proficiency of the peripheral metal reflection units at each position can be increased correspondingly on the basis of satisfying the requirement that the connection line of the feed hole and the metallization central through hole of the wide-beam broadband miniaturized antenna is axially symmetrical.

In another embodiment of the present invention, as shown in fig. 1 to 4, the back surface of thedielectric antenna board 10 is connected to a metalized ground or a PCB ground (not shown).

In another embodiment of the present invention, as shown in fig. 1 to 4, the rfsignal radiating unit 40 and the peripheralmetal reflecting unit 50 are both disposed in a circle-center symmetrical manner with respect to the metallized central throughhole 20, so that on one hand, the shapes of the rfsignal radiating unit 40 and the peripheralmetal reflecting unit 50 are more regular, and on the other hand, the peripheralmetal reflecting unit 50 is more regularly distributed when being divided into a plurality of units.

In another embodiment of the present invention, as shown in fig. 1 to 4, the external shape of thedielectric antenna plate 10 is a circle, a quadrangle or other polygonal shapes, and the external shape of thedielectric antenna plate 10 can be changed according to the use requirement, so as to meet different customer requirements.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A wide-beam broadband miniaturized antenna is characterized in that: including the medium antenna board with set up in metallization center through-hole, non-metallization secant and rigid coupling on the medium antenna board in metal radiating surface on the medium antenna board, metallization center through-hole set up in the centre of metal radiating surface, non-metallization secant encircles metallization center through-hole end to end seals the setting, non-metallization secant is cut apart metal radiating surface is formed with radio frequency signal radiating element and a plurality of peripheral metal reflection unit, radio frequency signal radiating element with peripheral metal reflection unit all is located same horizontal plane, be provided with the feed hole that a plurality of is used for exporting radio frequency signal on the radio frequency signal radiating element, be provided with four at least earthing hole on the peripheral metal reflection unit.

2. The wide-beam broadband miniaturized antenna according to claim 1, wherein: the grounding holes are respectively connected with the peripheral metal reflection units and the reverse side grounding or PCB ground, the grounding holes are respectively arranged in pairwise symmetry by taking the metallization central through hole as the center, and the distances between the two opposite grounding holes and the metallization central through hole are the same.

3. The wide-beam broadband miniaturized antenna according to claim 2, wherein: the feed holes are arranged in a centrosymmetric manner by taking the metalized central through hole as a symmetric center, the feed holes are communicated with the radio-frequency signal radiation unit, and the feed holes are grounded with the back surface of the dielectric antenna plate or are not communicated with the PCB ground.

4. The wide-beam broadband miniaturized antenna according to claim 3, wherein: the distance between the grounding hole and the metalized central through hole is larger than the distance between the feeding hole and the metalized central through hole.

5. The wide-beam broadband miniaturized antenna according to claim 1, wherein: the peripheral metal reflection unit can be divided into a plurality of subareas, and the grounding holes are respectively positioned in the subareas.

6. The wide-beam broadband miniaturized antenna according to claim 5, wherein: each partition is symmetrically arranged with the metalized central through hole as the center, and each partition is symmetrically arranged with the connecting line of the feed hole and the metalized central through hole as the axis.

7. The wide-beam broadband miniaturized antenna according to any one of claims 1 to 6, wherein: the peripheral metal reflection units are arranged in four, the four peripheral metal reflection units are arranged at four corners of the matrix in a matrix manner, and the peripheral metal reflection units are arranged in a central symmetry manner by taking the metallization central through hole 5 as a circle center.

8. The wide-beam broadband miniaturized antenna according to any one of claims 1 to 6, characterized in that: the back of the medium antenna plate is connected with a metalized ground or a PCB ground terminal.

9. The wide-beam broadband miniaturized antenna according to any one of claims 1 to 6, characterized in that: the radio-frequency signal radiation unit and the peripheral metal reflection unit are both arranged in a circle-center symmetry manner relative to the metallization center 0 through hole.

10. The wide-beam broadband miniaturized antenna according to any one of claims 1 to 6, wherein: the shape of the dielectric antenna plate is circular, quadrilateral or other polygonal shapes.

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