Lightweight composite dielectric integrated antenna

Abstract

The invention belongs to the technical field of antennas, and particularly relates to a lightweight composite dielectric integrated antenna which comprises a dielectric plate, a first metal radiation unit and a second metal radiation unit, the first metal radiation unit and the second metal radiation unit are fixedly connected to the dielectric plate, the first metal radiation unit is located on the upper surface of the dielectric plate, and the second metal radiation unit is located on the lower surface of the dielectric plate. The dielectric plate is provided with a plurality of first feed holes and a plurality of second feed holes, and the first feed holes and the second feed holes penetrate through the first metal radiation unit, the second metal radiation unit and the dielectric plate. The first metal radiation unit and the second metal radiation unit are respectively provided with a second demetalized clearance ring and a first demetalized clearance ring, the first demetalized clearance ring is arranged around the first feed hole, the second demetalized clearance ring is arranged around the first feed hole, and the bottom of the dielectric plate is provided with an assembly part. And the assembly part is arranged around the bottom edge of the dielectric plate, so that the weight of the antenna is reduced to the greatest extent.

Description

Technical Field

[0001] The present invention belongs to the technical field of antennas, and in particular relates to a lightweight composite dielectric integrated 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 layers increases, the thickness increases, and the cost increases. It is 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, the second radiation patch A coupling hole is provided on the top, and the feeding needle extends from the feeding point into the coupling hole, and 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 first radiation unit or the other of the second radiation unit; and a reference ground is attached to the lower surface of the second layer of medium, and 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; and the use of the antenna mechanism in the prior art has the problem that the more frequency bands used by GNSS, the more stacked layers, and the greater the thickness, and the excessive thickness requires a longer output feeding needle, and the excessively long output feeding needle causes output signal loss and interference, resulting in performance degradation, which does not meet the lightweight requirements of the aircraft. Summary of the Invention

[0004] The object of the present invention is to provide a lightweight composite dielectric integrated antenna, aiming to solve the technical problem of the integrated antenna being too heavy as a whole in the prior art.

[0005] To achieve the above objectives, an embodiment of the present invention provides a lightweight composite dielectric integrated antenna, comprising a dielectric plate and a first metal radiating unit and a second metal radiating unit fixed to the dielectric plate, wherein the first metal radiating unit is located on the upper surface of the dielectric plate, and the second metal radiating unit is located on the lower surface of the dielectric plate. The dielectric plate is provided with a plurality of first feeding holes and a plurality of second feeding holes, each of the first feeding holes and each of the second feeding holes passes through the first metal radiating unit, the second metal radiating unit and the dielectric plate, and the first metal radiating unit and the second metal radiating unit are respectively provided with a second demetallized air avoidance ring and a first demetallized air avoidance ring, the first demetallized air avoidance ring is arranged around the first feeding hole, and the second demetallized air avoidance ring is arranged around the second feeding hole, and an assembly part is provided at the bottom of the dielectric plate, and the assembly part is arranged around the bottom edge of the dielectric plate to bridge the gap between the bottom of the dielectric plate and the assembly surface.

[0006] Preferably, the first metal radiation unit and the second metal radiation unit are both arranged in a centrosymmetrical manner with the center of the first metal radiation unit as the center.

[0007] Preferably, a line connecting the first feeding hole and the center of the first metal radiation unit is arranged to coincide with a line connecting the second feeding hole and the center of the first metal radiation unit.

[0008] Preferably, a line connecting the centers of the adjacent first feeding holes and the first metal radiation units and a line connecting the centers of the second feeding holes and the first metal radiation units are arranged at an alternate angle.

[0009] Preferably, the distances between the centers of the first feeding holes and the second metal radiation units are the same, and the angle between two adjacent first feeding holes is 90°.

[0010] Preferably, the distances between the second feeding holes and the center of the first metal radiation unit are the same, and the angle between two adjacent second feeding holes is 90°.

[0011] Preferably, a plurality of feeding pads are provided on the first metal radiation unit, and each of the feeding pads is respectively arranged around the corresponding second feeding hole, and the corresponding second demetallized air avoidance rings are respectively arranged around the corresponding feeding pad.

[0012] Preferably, the dielectric plate is provided with a plurality of grounding holes, each of the grounding holes is arranged at intervals around the first metal radiation unit, and each of the grounding holes is provided with extending branches.

[0013] Preferably, a central through hole is provided on the dielectric plate, and the central through hole passes through the center of the first metal radiation unit and the second metal radiation unit, and each of the first feeding holes and each of the second feeding holes are arranged around the central through hole.

[0014] The above one or more technical solutions in the lightweight composite dielectric integrated antenna provided by the embodiment of the present invention have at least one of the following technical effects:

[0015] A lightweight composite dielectric integrated antenna in the present invention is composed of a dielectric plate and a first metal radiating unit and a second metal radiating unit fixed to the dielectric plate. An assembly is provided at the bottom of the dielectric plate to raise the distance between the dielectric plate and the installed circuit PCB. The assembly can be a plurality of metal or non-metal pins of a certain height to suspend the dielectric plate on the circuit PCB, or a hollow or other integrally formed structure is formed on the lower surface of the dielectric plate to ensure a certain gap between the lower surface of the dielectric plate and the circuit PCB. The first metal radiating unit and the second metal radiating unit are respectively fixed to the upper and lower surfaces of the dielectric plate. The combination of the first metal radiating unit and the first dielectric plate forms a first broadband signal, and the air dielectric between the second metal radiating unit and the circuit PCB forms a broadband signal of a second frequency band. The dielectric plate is provided with a plurality of first and second feeding holes that penetrate the first and second metal radiating units and the dielectric plate. Through the above-mentioned structural arrangement, both broadband signals are output as broadband signals through the first and second feeding holes, thereby minimizing the weight of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 This is a top view of a lightweight composite dielectric integrated antenna (style one) provided in an embodiment of the present invention.

[0018] Figure 2 This is an upward-looking rendering of a lightweight composite dielectric integrated antenna (style one) provided in an embodiment of the present invention.

[0019] Figure 3 This is a top view of a lightweight composite dielectric integrated antenna (style two) provided in an embodiment of the present invention.

[0020] Figure 4This is a bottom-up rendering of a lightweight composite dielectric integrated antenna (style two) provided in an embodiment of the present invention.

[0021] Figure 5 This is a top view of a lightweight composite dielectric integrated antenna (style three) provided in an embodiment of the present invention.

[0022] Figure 6 This is a bottom-up rendering of a lightweight composite dielectric integrated antenna (style three) provided in an embodiment of the present invention.

[0023] Figure 7 This is a top view of a lightweight composite dielectric integrated antenna (style four) provided in an embodiment of the present invention.

[0024] Figure 8 This is an upward-looking rendering of a lightweight composite dielectric integrated antenna (style four) provided in an embodiment of the present invention.

[0025] Among them, the reference numerals in the figures are:

[0026] 10—dielectric plate 11—first feeding hole 12—second feeding hole

[0027] 13—Center through hole 14—Grounding hole 15—Pin

[0028] 16 - antenna ground 20 - first metal radiation unit 21 - second demetallized airproof ring

[0029] 22 —feed pad 30 —second metal radiation unit 31 —first demetallized air escape ring. DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention in detail. Figures 1 to 8 , 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 present invention, but should not be understood as limiting the present invention.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] In one embodiment of the present invention, Figures 1 to 8 As shown, a lightweight composite dielectric integrated antenna is provided, comprising a dielectric plate 10 and a first metal radiation unit 20 and a second metal radiation unit 30 fixed to the dielectric plate 10, wherein the first metal radiation unit 20 is located on the upper surface of the dielectric plate 10, and the second metal radiation unit 30 is located on the lower surface of the dielectric plate 10, and a plurality of first feeding holes 11 and a plurality of second feeding holes 12 are provided on the dielectric plate 10, wherein the number of the first feeding holes 11 and the second feeding holes 12 are both 1 to 4, and each first feeding hole 11 and each second feeding hole 12 passes through the first metal radiation unit 20, the second metal radiation unit 30 and the dielectric plate 10, and the first metal radiation unit 20 A second demetallized air avoidance ring 21 and a first demetallized air avoidance ring 31 are respectively provided on the second metal radiation unit 30. The first demetallized air avoidance ring 31 is arranged around the first feeding hole 11, and the second demetallized air avoidance ring 21 is arranged around the second feeding hole 12. An assembly part is provided at the bottom of the dielectric plate 10. The assembly part can be a number of metal or non-metallic pins 15 of a certain height to suspend the dielectric plate 10 on the circuit PCB board, or through hollowing or other one-piece molding structures on the lower surface of the dielectric plate 10, the assembly part is arranged around the bottom edge of the dielectric plate 10 to be used to overhead the distance between the bottom of the dielectric plate 10 and the assembly surface.

[0035] The first metal radiating element 20 and the second metal radiating element 30 are arranged centrosymmetrically with the center of the first metal radiating element 20 as the center. The line connecting the first feeding hole 11 and the center of the first metal radiating element 20 is arranged to coincide with the line connecting the second feeding hole 12 and the center of the first metal radiating element 20. The line connecting the center of the adjacent first feeding hole 11 and the center of the first metal radiating element 20 and the line connecting the center of the second feeding hole 12 and the center of the first metal radiating element 20 are arranged at an offset angle.

[0036] like Figure 1 As shown, the assembly uses metal or non-metallic pins 15 or mounting columns integrally formed with the dielectric plate 10 to mount the dielectric plate 10 on the circuit PCB, so that there is a certain height gap between the dielectric plate 10, the first metal radiation unit 20, the second metal radiation unit 30 and the circuit PCB, and the air between the gaps is the medium of the second metal radiation unit 30.

[0037] like Figure 1 As shown, the pins 15 are integrally formed on the dielectric plate 10 , and the pins 15 are metallized or not metallized.

[0038] In another embodiment of the present invention, Figures 3 to 8 As shown, the assembly is in the shape of a cover with the lower surface of the dielectric plate 10 hollowed out, the annular bottom is the antenna ground 16, the second metal radiation unit 30 is fixed to the lower surface of the hollow space, and the air in the hollow space of the dielectric plate 10 is the medium of the second metal radiation unit 30.

[0039] like Figures 1 to 8 As shown, the signal of the first metal radiation unit 20 is output to the PCB through the first feeding hole 11 and the feeding needle, forming a first broadband composite signal.

[0040] like Figures 1 to 8 As shown, the signal of the second metal radiation unit 30 is output to the PCB through the second metallized feeding hole 12 and the feeding pin on the feeding pad through welding, forming a second broadband composite signal.

[0041] like Figures 1 to 8 As shown, the first metal radiation unit 20 and the second metal radiation unit 30 are both centrally symmetrically arranged with the center of the first metal radiation unit 20 as the center.

[0042] like Figures 1 to 8 As shown, the distances between the centers of the first feeding holes 11 and the first metal radiation unit 20 are the same, and the angle between two adjacent first feeding holes 11 is 90°.

[0043] like Figure 2 、 4 , 6 and Figure 8As shown, a plurality of first demetallized avoidance rings 31 are provided on the second metal radiation unit 30, and each first demetallized avoidance ring 31 is respectively arranged around each first feeding hole 11. The second metal radiation unit 30 is not electrically connected to the first feeding hole 11. The signal of the second metal radiation unit 30 is coupled with the signal of the first metal radiation unit 20. The hybrid broadband signal formed by the coupling is output to the PCB through the feeding pin of the first feeding hole 11 soldered on the first metal radiation unit 20.

[0044] like Figure 1 、 3 , 5 and Figure 7 As shown, a plurality of second demetallized air gap rings 21 are provided on the first metal radiation unit 20 , and each second demetallized air gap ring 21 is respectively provided around each second feeding hole 12 .

[0045] like Figure 1 、 3 , 5 and Figure 7 As shown, a feeding pad 22 is correspondingly provided on the first metal radiation unit 20, and the feeding pad 22 is respectively arranged around the corresponding second feeding hole 12, and the corresponding second demetallized avoidance ring 21 is respectively arranged around the corresponding feeding pad 22. The feeding pad 22 is connected to the second metallized radiation unit 30 through the metallized second feeding hole 12. The second coupled broadband signal formed by the second metal radiation unit and the first metal radiation unit passes through the metallized second feeding hole and is output to the circuit PCB through welding to the feeding pin on the feeding pad 22.

[0046] The second feeding hole 12 is metallized so that the feeding pad 22 is connected to the second metal radiation unit 20 through the metallized second feeding hole 12, or the feeding needle installed in the second feeding hole 12 is electrically connected to the second metal radiation unit 20 through soldering or other measures.

[0047] like Figures 1 to 8 As shown, a plurality of grounding holes 14 are provided on the dielectric plate 10, and each grounding hole 14 is arranged at intervals around the first metal radiation unit 20. The grounding holes 14 are provided with extended branches, and other communication antennas are arranged outside the first metal radiation unit 20 to solve the integrated design of antennas with more frequency bands.

[0048] like Figures 1 to 8 As shown, a central through hole 13 is provided on the dielectric plate 10 , and the central through hole 13 is provided through the centers of the first metal radiation unit 20 and the second metal radiation unit 30 , and each feeding hole 11 is provided around the central through hole 13 .

[0049] A lightweight composite dielectric integrated antenna in the present invention is composed of a dielectric plate 10 and a first metal radiation unit 20 and a second metal radiation unit 30 fixed to the dielectric plate 10, wherein an assembly part is provided at the bottom of the dielectric plate 10 to raise the distance between the dielectric plate 10 and the installed circuit PCB. The assembly part can be a plurality of metal or non-metal pins 15 of a certain height to suspend the dielectric plate 10 on the circuit PCB, or a hollow or other integrally formed structure is formed on the lower surface of the dielectric plate 10 so that there is a certain gap between the lower surface of the dielectric plate 10 and the circuit PCB, so that the first metal radiation unit 20 is fixed to the dielectric plate 10. The first metal radiation unit 20 and the second metal radiation unit 30 are respectively fixed to the upper surface and the lower surface of the dielectric plate 10. The combination of the first metal radiation unit 20 and the first dielectric plate 10 forms a first broadband signal, and the air medium between the second metal radiation unit 30 and the circuit PCB forms a broadband signal of the second frequency band. The dielectric plate 10 is provided with a plurality of first feeding holes 11 and a plurality of second feeding holes 12 that pass through the first metal radiation unit 20, the second metal radiation unit 30 and the dielectric plate 10. Through the above-mentioned structural setting, the two broadband signals are output through the first feeding hole 11 and the second feeding hole 12, thereby minimizing the weight of the antenna.

[0050] The present invention provides a lightweight composite dielectric integrated antenna, wherein the dielectric plate 10 can be circular, square, or other regular or irregular shapes, and the upper and lower surfaces of the dielectric plate 10 can be flat, drum-shaped, or concave. The dielectric plate 10 can be in the shape of a cover with a hollowed-out lower surface, or other structures in which the dielectric plate 10 and the overhead pins 15 are integrally formed.

[0051] 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 lightweight composite dielectric integrated antenna, characterized by: The invention comprises a dielectric plate and a first metal radiation unit and a second metal radiation unit fixed to the dielectric plate, wherein the first metal radiation unit is located on the upper surface of the dielectric plate, and the second metal radiation unit is located on the lower surface of the dielectric plate. The dielectric plate is provided with a plurality of first feeding holes and a plurality of second feeding holes, each of the first feeding holes and each of the second feeding holes passes through the first metal radiation unit, the second metal radiation unit and the dielectric plate. The first metal radiation unit and the second metal radiation unit are respectively provided with a second demetallized air avoidance ring and a first demetallized air avoidance ring, the first demetallized air avoidance ring is arranged around the first feeding hole, and the second demetallized air avoidance ring is arranged around the second feeding hole. An assembly part is provided at the bottom of the dielectric plate, and the assembly part is arranged around the bottom edge of the dielectric plate to bridge the gap between the bottom of the dielectric plate and the assembly surface.

2. The lightweight composite dielectric integrated antenna according to claim 1, characterized in that: The first metal radiation unit and the second metal radiation unit are both centrally symmetrically arranged with the center of the first metal radiation unit as the center.

3. The lightweight composite dielectric integrated antenna according to claim 1, characterized in that: A line connecting the first feeding hole and the center of the first metal radiation unit is arranged to coincide with a line connecting the second feeding hole and the center of the first metal radiation unit.

4. The lightweight composite dielectric integrated antenna according to claim 1, characterized in that: A line connecting the centers of the adjacent first feeding holes and the first metal radiation units and a line connecting the centers of the second feeding holes and the first metal radiation units are arranged at an alternate angle.

5. The lightweight composite dielectric integrated antenna according to any one of claims 1 to 4, characterized in that: The distances between the centers of the first feeding holes and the second metal radiation units are the same, and the angle between two adjacent first feeding holes is 90°.

6. The lightweight composite dielectric integrated antenna according to any one of claims 1 to 4, characterized in that: The distances between the second feeding holes and the center of the first metal radiation unit are the same, and the angle between two adjacent second feeding holes is 90°.

7. The lightweight composite dielectric integrated antenna according to any one of claims 1 to 4, characterized in that: A plurality of feeding pads are provided on the first metal radiation unit, and each of the feeding pads is respectively arranged around the corresponding second feeding hole, and the corresponding second demetallized air avoidance rings are respectively arranged around the corresponding feeding pad.

8. The lightweight composite dielectric integrated antenna according to any one of claims 1 to 4, characterized in that: The dielectric plate is provided with a plurality of grounding holes, each of the grounding holes is arranged at intervals around the first metal radiation unit, and each of the grounding holes is provided with extending branches.

9. The lightweight composite dielectric integrated antenna according to any one of claims 1 to 4, characterized in that: The dielectric plate is provided with a central through hole, which passes through the centers of the first metal radiation unit and the second metal radiation unit. The first feeding holes and the second feeding holes are arranged around the central through hole.

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