Single-medium coplanar coupling type broadband high-precision positioning combined antenna

Abstract

The utility model belongs to the technical field of antennas, and particularly relates to a single-medium coplanar coupling type broadband high-precision positioning combined antenna, which comprises a medium antenna plate, a GNSS (Global Navigation Satellite System) antenna assembly fixedly connected to the upper surface of the medium antenna plate and a plurality of feed holes, 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-metallization isolation area is arranged between the first metal radiation unit and the second metal radiation unit, and a plurality of first metallization coupling bridges are arranged on the first non-metallization isolation area. The two ends of the first metallization coupling bridge are electrically connected with 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-metallization isolation area and the first metallization coupling bridges are symmetrically arranged with the center of the first metal radiation unit as the center. Through the above structural arrangement, the function of broadband signal output can be performed without increasing the thickness of the antenna and the number of laminated layers.

Description

Technical Field

[0001] The utility model 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 the global satellite navigation system, 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's high-precision positioning and Beidou's 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 with one layer, which makes the antenna larger and larger, the number of stacked layers increases, the thickness increases, and the cost increases, which has been 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 medium; a first radiation patch, the first radiation patch is attached to the upper surface of the first layer of medium, 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 medium, the second layer of medium is arranged on the lower surface of the first layer of medium; a second radiation patch, the second radiation patch is arranged between the lower surface of the first layer of medium and the upper surface of the second layer of medium, the second radiation patch is provided with a coupling hole, 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 the 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, the greater the thickness, and too large a thickness requires a longer output feeding needle, and an overly 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 a reduced thickness will also lead to a significant reduction in antenna gain and bandwidth.

[0004] Therefore, a combined antenna is needed to replace the traditional laminated antenna, so that the combined 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. Utility Model Content

[0005] The utility model aims to provide a single-medium coplanar coupling type broadband high-precision positioning combined antenna, aiming to solve the technical problem in the prior art that the total thickness of the combined antenna affects the broadband signal output.

[0006] To achieve the above-mentioned purpose, an embodiment of the utility model provides a single-dielectric coplanar coupled wide-band high-precision positioning combination antenna, comprising a dielectric antenna plate and a GNSS antenna assembly fixedly connected to the upper surface of the dielectric antenna plate 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, 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 each of the first metallized coupling bridges are symmetrically arranged with the center of the first metal radiation unit as the center.

[0007] Preferably, 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.

[0008] 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.

[0009] 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, 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.

[0010] 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.

[0011] 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 grounding or PCB ground on the back side of the dielectric antenna board.

[0012] Preferably, a plurality of metallized grounding holes are arranged 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 grounding on the back side of the dielectric antenna board or the PCB ground.

[0013] 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.

[0014] Preferably, a plurality of communication antennas are arranged around the metallized grounded frequency reduction branch.

[0015] Preferably, a plurality of metallized isolation grooves are arranged on 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.

[0016] The above one or more technical solutions in the single-medium coplanar coupled wide-band high-precision positioning combined antenna provided by the embodiment of the utility model have at least one of the following technical effects:

[0017] The utility model discloses a single-medium coplanar coupling type broadband high-precision positioning combination antenna, which is composed of a dielectric antenna plate, a GNSS antenna assembly and a plurality of feeding holes, wherein the GNSS antenna assembly is fixedly connected to the upper surface of the dielectric antenna plate, and each feeding hole is located on the GNSS antenna assembly, and the GNSS antenna assembly is composed of a first metal radiation unit and a second metal radiation unit, wherein 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, and a first non-metallic isolation area is arranged between the first metal radiation unit and the second metal radiation unit, and the first non-metallic isolation area is arranged between the first metal radiation unit and the second metal radiation unit. The metallized isolation area is also symmetrically arranged with the center of the first metal radiation unit as the center. A plurality of first metallized coupling bridges are arranged at intervals 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 is simultaneously arranged on the first metal radiation unit and the second metal radiation unit. Through the above-mentioned structural arrangement, through the action of the metallized coupling bridge, the GNSS antenna assembly couples out wide-band GNSS RF signals of two or more 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

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative labor.

[0019] Figure 1This is a rendering of a single-medium coplanar coupled wide-band high-precision positioning combination antenna (style one) provided in an embodiment of the utility model.

[0020] Figure 2 This is a rendering of a single-medium coplanar coupled wide-band high-precision positioning combination antenna (style two) provided in an embodiment of the utility model.

[0021] Figure 3 This is a rendering of a single-medium coplanar coupled wide-band high-precision positioning combination antenna (style three) provided in an embodiment of the utility model.

[0022] Figure 4 This is a rendering of a single-medium coplanar coupled wide-band high-precision positioning combination antenna (style four) provided in an embodiment of the utility model.

[0023] Figure 5 This is a rendering of a single-medium coplanar coupled wide-band high-precision positioning combination antenna (style five) provided in an embodiment of the utility model.

[0024] Figure 6 This is a rendering of a single-medium coplanar coupled wide-band high-precision positioning combination antenna (style six) provided in an embodiment of the utility model.

[0025] Figure 7 This is a rendering of a single-medium coplanar coupled wide-band high-precision positioning combination antenna (style seven) provided in an embodiment of the utility model.

[0026] Among them, the reference numerals in the figure are:

[0027] 10—Dielectric antenna board 11—Center through hole 12—Metalized ground hole

[0028] 13—Metalized grounding frequency reduction branch 14—Metalized isolation slot 15—Communication antenna

[0029] 20—GNSS antenna assembly 21—first metal radiation unit 22—second metal radiation unit

[0030] 30—feed hole 40—first non-metallized isolation area 41—first metallized coupling bridge

[0031] 50 —second non-metallized isolation region 51 —second metallized coupling bridge 60 —third metal radiation unit. DETAILED DESCRIPTION

[0032] The following describes the embodiments of the present invention in detail. 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 be used to explain the embodiments of the utility model, and should not be construed as limiting the utility model.

[0033] 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 a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0035] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0036] In one embodiment of the present invention, Figures 1 to 7As shown, a single-dielectric coplanar coupling type wide-band high-precision positioning combination antenna is provided, comprising 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 feeding holes 30, wherein the GNSS antenna assembly 20 comprises a first metal radiation unit 21 and a second metal radiation unit 22 surrounding the first metal radiation unit 21, a first non-metallized isolation area 40 is arranged between the first metal radiation unit 21 and the second metal radiation unit 22, a plurality of first metallized coupling bridges 41 are arranged on the first non-metallized isolation area 40, two ends of the first metallized coupling bridge 41 are electrically connected to the first metal radiation unit 21 and the second metal radiation unit 22 respectively, and the first metal radiation unit 21, the second metal radiation unit 22, the first non-metallized isolation area 40 and the first metallized coupling bridges 41 are all symmetrically arranged with the center of the first metal radiation unit 21 as the center, and the first metal radiation unit 21 and the second metal radiation unit 22 are connected together through the first metallized coupling bridge 41.

[0037] A single-medium coplanar coupling type wide-band high-precision positioning combination antenna in the utility model 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 fixedly connected to the upper surface of the dielectric antenna plate 10, each feeding hole 30 is located on the GNSS antenna assembly 20, and 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, and a first non-metallized isolation area 40 is arranged between the first metal radiation unit 21 and the second metal radiation unit 22. The first 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 arranged at intervals 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 wide-band GNSS RF signals of two or more center frequencies, and outputs them to the PCB input terminal through the PIN pin, thereby realizing the function of wide-band GNSS signal reception.

[0038] In another embodiment of the present invention, Figures 1 to 7 As shown, a plurality of feeding holes 30 are provided on the first metal radiation unit 21 and the second metal radiation unit 22 for outputting GNSS high-frequency or low-frequency coupling signals.

[0039] like Figure 1 , Figure 3 and Figures 5-6 As shown, there are two or four feeding holes 30 on the first metal radiation unit 21, and the distance between the feeding holes 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°.

[0040] like Figures 1-2 and Figures 6-7 As shown, two or four feeding holes 30 are provided 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°

[0041] like Figures 1 to 7 As shown, 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.

[0042] In another embodiment of the present invention, Figure 7 As shown, a third metal radiation unit 60 is arranged around the second metal radiation unit 22, a second non-metallic isolation area 50 is arranged between the second metal radiation unit 22 and the third metal radiation unit 60, and a plurality of second metalized coupling bridges 51 are arranged on the second non-metallic isolation area 50, and two ends of the second metalized coupling bridge 51 are electrically connected to the second metal radiation unit 22 and the third metal radiation unit 60 respectively.

[0043] In another embodiment of the present invention, Figure 7 As shown, the third metal radiation unit 60 and the second non-metallized isolation area 50 are both symmetrically arranged with the center of the first metal radiation unit 21 as the center.

[0044] In another embodiment of the present invention, Figures 1 to 7 As shown, the dielectric antenna board 10 and the first metal radiation unit 21 are both provided with a metallized central through hole 11 that can communicate with each other, and the central through hole 11 is electrically connected to the metallized grounding on the back of the dielectric antenna board 10 or the PCB ground.

[0045] In another embodiment of the present invention, Figures 1 to 3 and Figure 6As shown, a plurality of metallized grounding holes 12 are provided on the dielectric antenna board 10 , each of which is arranged around the GNSS antenna assembly 20 , and the metallized grounding holes 12 are electrically connected to the metallized grounding or PCB ground on the back of the dielectric antenna board 10 .

[0046] In another embodiment of the present invention, Figures 1 to 3 and Figure 6 As shown, the metallized grounding hole 12 extends to form a metallized grounding frequency reduction branch 13 , and the metallized grounding frequency reduction branch 13 is located on the dielectric antenna board 10 and is used for frequency reduction processing of the GNSS antenna assembly 20 .

[0047] In another embodiment of the present invention, Figures 5 to 7 As shown, a plurality of communication antennas 15 are arranged on the periphery of the metallized grounded frequency reduction branch 13 .

[0048] In another embodiment of the present invention, Figures 4-5 As shown, a plurality of metallized isolation slots 14 are arranged on the periphery of the GNSS antenna assembly 20, and the metallized isolation slots 14 are electrically connected to the metallized ground or PCB ground on the back of the dielectric antenna board 10. The shape of the dielectric antenna board 10 can be set to a circular or polygonal shape according to different user requirements.

[0049] 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 protection scope 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 4, 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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