Single-dielectric coplanar coupling broadband high-precision positioning combined antenna

Abstract

The present invention belongs to the technical field of antennas, and particularly relates to a single-dielectric coplanar coupling broadband high-precision positioning combined antenna. The antenna comprises a dielectric antenna board, a GNSS antenna assembly fixedly connected to the upper surface of the dielectric antenna board, and several feed holes, wherein the GNSS antenna assembly comprises a first metal radiation unit, and a second metal radiation unit which surrounds the first metal radiation unit. A first non-metallized isolation area is provided between the first metal radiation unit and the second metal radiation unit, and several first metallized coupling bridges are provided in the first non-metallized isolation area, wherein two ends of each first metallized coupling bridge are respectively electrically connected to the first metal radiation unit and the second metal radiation unit, and the first metal radiation unit, the second metal radiation unit, the first non-metallized isolation area and each first metallized coupling bridge are all symmetrically arranged with the center of the first metal radiation unit as the center. By means of the structural arrangement, the function of outputting broadband signals can be achieved without increasing the thickness of antennas and the number of stacked layers.

Description

A single-medium coplanar coupling wide-band high-precision positioning combined antenna Technical Field

[0001] The present invention belongs to the technical field of antennas, and in particular relates to a single-medium coplanar coupling type broadband high-precision positioning combined antenna. Background Art

[0002] With the development of global satellite navigation systems, there are more and more navigation systems, and each system uses more and more frequency bands. Taking the Beidou navigation system as an example, Beidou high-precision positioning and Beidou short message reception and transmission all require independent frequencies. The system needs to perform high-precision positioning and meet the transmission and reception of short messages.

[0003] Traditional stacked GNSS technology requires one frequency to be superimposed on one layer, which makes the antenna larger and larger, the number of stacked layers increases, the thickness increases, and the cost increases, which has become difficult to meet the needs. For example, a miniaturized combined antenna with application number CN112290205A includes a GNSS antenna, and the GNSS antenna includes: a first layer of dielectric; a first radiation patch, the first radiation patch is attached to the upper surface of the first layer of dielectric, the first radiation patch is provided with a feeding point to form one of the first radiation unit or the second radiation unit; a feeding needle, the feeding needle is electrically connected to the feeding point; a second layer of dielectric, the second layer of dielectric is provided on the lower surface of the first layer of dielectric; a second radiation patch, the second radiation patch is provided between the lower surface of the first layer of dielectric and the upper surface of the second layer of dielectric, a coupling hole is provided on the second radiation patch, and the feeding needle extends from the feeding point into the coupling hole, a gap is formed between the inner wall surface of the coupling hole and the feeding needle, so that the second radiation patch is coupled to form the other of the first radiation unit or the second radiation unit; and a reference ground, the reference ground is attached to the lower surface of the second layer of medium, the reference ground is electrically connected to the first radiation patch and the second radiation patch, and the reference ground is used for grounding to achieve grounding of the first radiation patch and the second radiation patch; wherein, the first radiation unit and the second radiation unit are radiation units of different frequencies, the more frequency bands used by GNSS, the more stacked layers, and the greater the thickness, and excessive thickness requires a longer output feeding needle, and an excessively long output feeding needle causes output signal loss and interference, resulting in performance degradation. In order to reduce signal loss and interference, the thickness of each layer has to be reduced, and the reduction in thickness will also lead to a significant reduction in antenna gain and bandwidth.

[0004] Therefore, a combination antenna is needed to replace the traditional stacked antenna, so that the combination antenna can meet the multi-system, wide-band, and high-precision usage requirements of current high-precision applications as much as possible without increasing the total thickness or even reducing the total thickness of the antenna.

[0005] Summary of the Invention

[0006] The purpose of the present invention is to provide a single-medium coplanar coupled broadband high-precision positioning combination antenna, aiming to solve the technical problem in the prior art that the total thickness of the combination antenna affects the broadband signal output.

[0007] To achieve the above-mentioned objectives, an embodiment of the present invention provides a single-dielectric coplanar coupled wide-band high-precision positioning combination antenna, comprising a dielectric antenna board and a GNSS antenna assembly fixed to the upper surface of the dielectric antenna board and a plurality of feed holes, wherein the GNSS antenna assembly comprises a first metal radiation unit and a second metal radiation unit surrounding the first metal radiation unit, a first non-metallized isolation area is arranged between the first metal radiation unit and the second metal radiation unit, a plurality of first metallized coupling bridges are arranged on the first non-metallized isolation area, the two ends of the first metallized coupling bridge are electrically connected to the first metal radiation unit and the second metal radiation unit respectively, and the first metal radiation unit, the second metal radiation unit, the first non-metallized isolation area and the first metallized coupling bridges are symmetrically arranged with the center of the first metal radiation unit as the center.

[0008] Preferably, each of the feeding holes is provided on the first metal radiation unit or the second metal radiation unit, and is used to output a GNSS high-frequency or low-frequency coupling signal.

[0009] Preferably, the first metal radiation unit and the second metal radiation unit are both provided with a plurality of the feeding holes for outputting GNSS high-frequency or low-frequency coupling signals.

[0010] Preferably, a third metal radiation unit is arranged around the second metal radiation unit, a second non-metallic isolation area is arranged between the second metal radiation unit and the third metal radiation unit, and a plurality of second metalized coupling bridges are arranged on the second non-metallic isolation area, and the two ends of the second metalized coupling bridge are electrically connected to the second metal radiation unit and the third metal radiation unit respectively.

[0011] Preferably, the third metal radiation unit and the second non-metallized isolation area are both symmetrically arranged with the center of the first metal radiation unit as the center.

[0012] Preferably, the dielectric antenna board and the first metal radiation unit are both provided with a metallized central through hole that can communicate with each other, and the central through hole is electrically connected to the metallized ground on the back side of the dielectric antenna board or the PCB ground.

[0013] Preferably, a plurality of metallized grounding holes are provided on the dielectric antenna board, each of the metallized grounding holes is arranged around the GNSS antenna assembly, and the metallized grounding holes are electrically connected to the metallized ground on the back side of the dielectric antenna board or the PCB ground.

[0014] Preferably, the metallized grounding hole extends to form a metallized grounding frequency reduction branch, and the metallized grounding frequency reduction branch is located on the dielectric antenna board.

[0015] Preferably, a plurality of communication antennas are arranged around the metallized grounded frequency reduction branch.

[0016] Preferably, a plurality of metallized isolation grooves are provided on the periphery of the GNSS antenna assembly, and the metallized isolation grooves are electrically connected to the metallized grounding on the back side of the dielectric antenna board or the PCB ground.

[0017] The above one or more technical solutions in the single-medium coplanar coupled wide-band high-precision positioning combination antenna provided by the embodiment of the present invention have at least one of the following technical effects:

[0018] A single-dielectric coplanar coupled wide-band high-precision positioning combination antenna in the present invention is composed of a dielectric antenna plate, a GNSS antenna assembly and a plurality of feeding holes, wherein the GNSS antenna assembly is fixed to the upper surface of the dielectric antenna plate, and each feeding hole is located on the GNSS antenna assembly. The GNSS antenna assembly is composed of a first metal radiation unit and a second metal radiation unit. The first metal radiation unit and the second metal radiation unit are both symmetrically arranged with the center of the first metal radiation unit as the center, and the second metal radiation unit is arranged around the first metal radiation unit. A first non-metallic isolation area is provided between the first metal radiation unit and the second metal radiation unit. The first non-metallic isolation area is provided between the first metal radiation unit and the second metal radiation unit. The isolation area is also symmetrically arranged with the center of the first metal radiation unit as the center. Several first metallized coupling bridges are spaced apart on the first non-metallized isolation area. The first metallized coupling bridges are symmetrically arranged with the center of the first metal radiation unit as the center. Each feeding hole is respectively arranged on the first metal radiation unit or the second metal radiation unit or simultaneously arranged on the first metal radiation unit and the second metal radiation unit. Through the above-mentioned structural setting, through the action of the metallized coupling bridge, the GNSS antenna assembly couples out two or more wide-band GNSS RF signals of center frequencies, and outputs them to the PCB input end through the PIN pin, thereby realizing the function of wide-band GNSS signal reception. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] FIG1 is a rendering of a single-medium coplanar coupled wide-band high-precision positioning combination antenna (pattern one) provided in an embodiment of the present invention.

[0021] FIG2 is a rendering of a single-medium coplanar coupled wide-band high-precision positioning combination antenna (pattern two) provided in an embodiment of the present invention.

[0022] FIG3 is a rendering of a single-medium coplanar coupled wide-band high-precision positioning combination antenna (pattern three) provided in an embodiment of the present invention.

[0023] FIG4 is a rendering of a single-medium coplanar coupled wide-band high-precision positioning combination antenna (pattern four) provided in an embodiment of the present invention.

[0024] FIG5 is a rendering of a single-medium coplanar coupled wide-band high-precision positioning combination antenna (pattern five) provided in an embodiment of the present invention.

[0025] FIG6 is a rendering of a single-medium coplanar coupled wide-band high-precision positioning combination antenna (pattern six) provided in an embodiment of the present invention.

[0026] FIG7 is a rendering of a single-medium coplanar coupled wide-band high-precision positioning combination antenna (pattern seven) provided in an embodiment of the present invention.

[0027] Among them, the figure marks are: 10—dielectric antenna board 11—center through hole 12—metallized grounding hole 13—metallized grounding frequency reduction branch 14—metallized isolation groove 15—communication antenna 20—GNSS antenna assembly 21—first metal radiation unit 22—second metal radiation unit 30—feed hole 40—first non-metallized isolation area 41—first metallized coupling bridge 50—second non-metallized isolation area 51—second metallized coupling bridge 60—third metal radiation unit. DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in Figures 1 to 7, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the embodiments of the present invention, and are not to be construed as limiting the present invention.

[0029] 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", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0031] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0032] In one embodiment of the present invention, as shown in Figures 1 to 7, a single-dielectric coplanar coupled wide-band high-precision positioning combination antenna is provided, including a dielectric antenna plate 10 and a GNSS antenna assembly 20 fixed to the surface of the dielectric antenna plate 10, and a plurality of feed holes 30. The GNSS antenna assembly 20 includes a first metal radiating element 21 and a second metal radiating element 22 surrounding the first metal radiating element 21. A first non-metallized isolation region 40 is provided between the first metal radiating element 21 and the second metal radiating element 22. A plurality of first metallized coupling bridges 41 are provided on the first non-metallized isolation region 40. The ends of the first metallized coupling bridges 41 are electrically connected to the first metal radiating element 21 and the second metal radiating element 22, respectively. The first metallized radiating element 21, the second metallized radiating element 22, the first non-metallized isolation region 40, and the first metallized coupling bridges 41 are all symmetrically arranged around the center of the first metallized radiating element 21, and the first metallized coupling bridges 41 connect the first metallized radiating element 21 and the second metallized radiating element 22 together.

[0033] A single-dielectric coplanar coupled wide-band high-precision positioning combination antenna in the present invention is composed of a dielectric antenna plate 10, a GNSS antenna assembly 20 and a plurality of feeding holes 30, wherein the GNSS antenna assembly 20 is fixed to the upper surface of the dielectric antenna plate 10, and each feeding hole 30 is located on the GNSS antenna assembly 20. The GNSS antenna assembly 20 is composed of a first metal radiation unit 21, a second metal radiation unit 22 and a plurality of feeding holes 30. The first metal radiation unit 21 and the second metal radiation unit 22 are both symmetrically arranged with the center of the first metal radiation unit 21 as the center, and the second metal radiation unit 22 is arranged around the first metal radiation unit 21. A first non-metallic isolation area 40 is provided between the first metal radiation unit 21 and the second metal radiation unit 22. A non-metallized isolation area 40 is also symmetrically arranged with the center of the first metal radiation unit 21 as the center. A plurality of first metallized coupling bridges 41 are spaced apart on the first non-metallized isolation area 40. The first metallized coupling bridges 41 are symmetrically arranged with the center of the first metal radiation unit 21 as the center. Each feeding hole 30 is respectively arranged on the first metal radiation unit 21 or the second metal radiation unit 22, or each feeding hole 30 is simultaneously arranged on the first metal radiation unit 21 and the second metal radiation unit 22. Through the above-mentioned structural arrangement, through the action of the metallized coupling bridge, the GNSS antenna assembly 20 couples out two or more wideband GNSS RF signals of center frequencies and outputs them to the PCB input end through the PIN pin, thereby realizing the function of wideband GNSS signal reception.

[0034] In another embodiment of the present invention, as shown in FIG. 1 to FIG. 7 , a plurality of feeding holes 30 are provided on each of the first metal radiation unit 21 and the second metal radiation unit 22 for outputting GNSS high-frequency or low-frequency coupling signals.

[0035] As shown in Figures 1, 3 and 5 to 6, there are two or four feeding holes 30 on the first metal radiation unit 21, and the distance between the feeding hole 30 on each first metal radiation unit 21 and the center of the first metal radiation unit 21 is equal, and the angle between the feeding holes 30 on two adjacent first metal radiation units 21 and the center of the first metal radiation unit 21 is 90°.

[0036] As shown in Figures 1-2 and 6-7, there are two or four feeding holes 30 on the second metal radiation unit 22, and the distance between the feeding holes 30 on each second metal radiation unit 22 and the center of the first metal radiation unit 21 is equal, and the angle between the feeding holes 30 on two adjacent second metal radiation units 22 and the center of the first metal radiation unit 21 is 90°.

[0037] As shown in Figures 1 to 7, the line connecting the feeding hole 30 on the first metal radiation unit 21 and the center of the first metal radiation unit 21 and the line connecting the feeding hole 30 on the second metallized radiation unit 22 and the center of the first metal radiation unit 21 are overlapped or arranged at a 45° angle.

[0038] In another embodiment of the present invention, as shown in Figure 7, a third metal radiation unit 60 is arranged around the second metal radiation unit 22, a second non-metallized isolation area 50 is arranged between the second metal radiation unit 22 and the third metal radiation unit 60, and a plurality of second metallized coupling bridges 51 are arranged on the second non-metallized isolation area 50, and the two ends of the second metallized coupling bridge 51 are electrically connected to the second metal radiation unit 22 and the third metal radiation unit 60 respectively.

[0039] In another embodiment of the present invention, as shown in FIG. 7 , the third metal radiation unit 60 and the second non-metallized isolation region 50 are both symmetrically arranged with the center of the first metal radiation unit 21 as the center.

[0040] In another embodiment of the present invention, as shown in Figures 1 to 7, the dielectric antenna board 10 and the first metal radiation unit 21 are both provided with a metallized central through hole 11 that can be aligned and communicated with each other, and the central through hole 11 is electrically connected to the back metallized ground or PCB ground of the dielectric antenna board 10.

[0041] In another embodiment of the present invention, as shown in Figures 1 to 3 and Figure 6, a plurality of metallized grounding holes 12 are provided on the dielectric antenna board 10. Each metallized grounding hole 12 is arranged around the GNSS antenna assembly 20, and the metallized grounding hole 12 is electrically connected to the metallized ground or PCB ground on the back side of the dielectric antenna board 10.

[0042] In another embodiment of the present invention, as shown in Figures 1 to 3 and Figure 6, the metallized grounding hole 12 extends to form a metallized grounding frequency reduction branch 13, which is located on the dielectric antenna board 10 and is used for frequency reduction processing of the GNSS antenna assembly 20.

[0043] In another embodiment of the present invention, as shown in FIG. 5 to FIG. 7 , a plurality of communication antennas 15 are disposed on the periphery of the metallized grounded frequency reduction branch 13 .

[0044] In another embodiment of the present invention, as shown in Figures 4 and 5, a plurality of metallized isolation slots 14 are provided around the periphery of the GNSS antenna assembly 20. The metallized isolation slots 14 are electrically connected to the metallized ground or PCB ground on the back side of the dielectric antenna board 10. The outer shape of the dielectric antenna board 10 can be set to a circular or polygonal shape according to different user requirements.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A single-medium coplanar coupling wide-band high-precision positioning combined antenna, characterized in that: It includes a dielectric antenna board, a GNSS antenna assembly fixedly connected to the upper surface of the dielectric antenna board, and a plurality of feeding holes. The GNSS antenna assembly includes a first metal radiation unit and a second metal radiation unit surrounding the first metal radiation unit. A first non-metallized isolation area is arranged between the first metal radiation unit and the second metal radiation unit. A plurality of first metallized coupling bridges are arranged on the first non-metallized isolation area. Two ends of the first metallized coupling bridge are electrically connected to the first metal radiation unit and the second metal radiation unit respectively. The first metal radiation unit, the second metal radiation unit, the first non-metallized isolation area and the first metallized coupling bridges are symmetrically arranged with the center of the first metal radiation unit as the center.

2. According to claim 1, a single-medium coplanar coupling type wide-band high-precision positioning combined antenna is characterized in that: Each of the feeding holes is arranged on the first metal radiation unit or the second metal radiation unit, and is used to output a GNSS high-frequency or low-frequency coupling signal.

3. The single-medium coplanar coupling wide-band high-precision positioning combined antenna according to claim 1, characterized in that: The first metal radiation unit and the second metal radiation unit are both provided with a plurality of feeding holes for outputting GNSS high-frequency or low-frequency coupling signals.

4. The single-medium coplanar coupling wide-band high-precision positioning combined antenna according to claim 1, characterized in that: A third metal radiation unit is arranged around the second metal radiation unit, a second non-metallic isolation area is arranged between the second metal radiation unit and the third metal radiation unit, a plurality of second metallized coupling bridges are arranged on the second non-metallized isolation area, and two ends of the second metallized coupling bridges are electrically connected to the second metal radiation unit and the third metal radiation unit respectively.

5. The single-medium coplanar coupling wide-band high-precision positioning combined antenna according to claim 3, characterized in that: The third metal radiation unit and the second non-metallized isolation area are both symmetrically arranged with the center of the first metal radiation unit as the center.

6. A single-medium coplanar coupling type broadband high-precision positioning combined antenna according to any one of claims 1 to 5, characterized in that: The dielectric antenna board and the first metal radiation unit are both provided with a metallized central through hole that can communicate with each other in an aligned manner, and the central through hole is electrically connected to the metallized grounding on the back side of the dielectric antenna board or the PCB ground.

7. A single-medium coplanar coupling type broadband high-precision positioning combined antenna according to any one of claims 1 to 5, characterized in that: The dielectric antenna board is provided with a plurality of metallized grounding holes, each of which is arranged around the GNSS antenna assembly, and the metallized grounding holes are electrically connected to the metallized grounding on the back side of the dielectric antenna board or the PCB ground.

8. The single-medium coplanar coupling type broadband high-precision positioning combined antenna according to claim 7, characterized in that: The metallized grounding hole extends to form a metallized grounding frequency reduction branch, and the metallized grounding frequency reduction branch is located on the dielectric antenna board.

9. The single-medium coplanar coupling type broadband high-precision positioning combined antenna according to claim 8, characterized in that: A plurality of communication antennas are arranged around the metallized grounded frequency reduction branch.

10. A single-medium coplanar coupling type broadband high-precision positioning combined antenna according to any one of claims 1 to 5, characterized in that: A plurality of metallized isolation grooves are arranged at the periphery of the GNSS antenna assembly, and the metallized isolation grooves are electrically connected to the metallized grounding or PCB grounding on the back side of the dielectric antenna board.

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