Lightweight full-band positioning antenna

Abstract

The utility model belongs to the technical field of positioning antennas, and particularly provides a light-weight full-band positioning antenna, which comprises a single-layer dielectric substrate, a circular high-frequency radiation patch attached to the center of the upper surface of the single-layer dielectric substrate, a cavity arranged on the lower surface of the single-layer dielectric substrate, a circular low-frequency radiation patch attached to the bottom of the cavity, and a circular high-frequency radiation patch attached to the bottom of the cavity. The circular high-frequency radiation patch is internally provided with at least one circular high-frequency coupling patch, the circular low-frequency radiation patch is internally provided with at least one rectangular low-frequency coupling patch, every two circular high-frequency coupling patches are arranged at intervals through non-metal gaps, and the circular high-frequency coupling patches and the rectangular low-frequency coupling patches are connected through feed copper columns. According to the utility model, a high-frequency part is coupled through feeding on the upper surface, and a low-frequency part is coupled through feeding on the lower surface, so that the antenna is miniaturized, the structure is simplified, high bandwidth and high reliability are further realized, the bandwidth of the antenna is increased, the antenna can cover a larger frequency range, and the receiving and transmitting performance of the antenna is improved.

Description

Technical Field

[0001] This utility model relates to the field of positioning antenna technology, and specifically to a lightweight full-band positioning antenna. Background Technology

[0002] In GNSS antenna applications, antennas used for satellite reception mainly include helical antennas, microstrip patch antennas, and parabolic antennas. Among them, microstrip patch antennas are widely used in devices that require miniaturization, such as Global Positioning System (GPS) receivers, vehicle-mounted satellite communication equipment, and handheld navigation devices, due to their compact structure, light weight, ease of integration, and low manufacturing cost.

[0003] Traditional single-layer patch antennas are structurally limited in their ability to achieve wide bandwidth coverage, typically operating only within a narrow frequency range. This narrow bandwidth restricts the antenna's compatibility with multi-frequency, multi-standard satellite signals, making it difficult to meet the wideband signal requirements of modern satellite communications. Utility Model Content

[0004] To address the technical problems in existing technologies, this utility model provides a lightweight full-band positioning antenna that achieves high bandwidth and high reliability while maintaining antenna miniaturization and structural simplification, making it suitable for application scenarios in satellite communication systems that require high-performance antennas.

[0005] The technical solution includes a single-layer dielectric substrate. A circular high-frequency radiating patch is attached to the center of the upper surface of the single-layer dielectric substrate. A cavity is formed on the lower surface of the single-layer dielectric substrate, and a circular low-frequency radiating patch is attached to the bottom of the cavity. At least one circular high-frequency coupling patch is provided inside the circular high-frequency radiating patch, and at least one rectangular low-frequency coupling patch is provided inside the circular low-frequency radiating patch. The circular high-frequency coupling patch and the rectangular low-frequency coupling patch correspond one-to-one. The circular high-frequency coupling patch and the circular high-frequency radiating patch, as well as the rectangular low-frequency coupling patch and the circular low-frequency radiating patch, are separated by non-metallic gaps. The circular high-frequency coupling patch and the rectangular low-frequency coupling patch are connected by a power-feeding copper pillar.

[0006] Furthermore, the circular high-frequency coupling patch, the rectangular low-frequency coupling patch, and the feeding copper pillars each comprise four, with the four feeding copper pillars distributed at 90° intervals.

[0007] Furthermore, a radiation coupling branch is provided at the edge of the upper surface of the single-layer dielectric substrate, the radiation coupling branch is spaced apart from the circular high-frequency radiation patch, and a sidewall branch is provided on the sidewall of the single-layer dielectric substrate, one end of the sidewall branch is connected to the radiation coupling branch, and the other end is connected to the metal ground on the lower surface of the single-layer dielectric substrate.

[0008] Furthermore, there are four radial coupling stubs and four sidewall stubs, which correspond one-to-one. The four radial coupling stubs are distributed at equal intervals around the center of the single-layer dielectric substrate, and the metal ground is connected to all four sidewall stubs.

[0009] Furthermore, the depth of the cavity is 4 / 5 of the thickness of the single-layer dielectric substrate.

[0010] Furthermore, the bottom of the cavity is provided with a plurality of metal through holes spaced apart around the center of the single-layer dielectric substrate. One end of each metal through hole is connected to the circular low-frequency radiating patch, and the other end is spaced apart from the circular high-frequency radiating patch.

[0011] Beneficial effects:

[0012] 1. In this utility model, the high-frequency part is fed and coupled out through the upper surface of the single-layer dielectric substrate, and the low-frequency part is fed and coupled out through the cavity on the lower surface of the single-layer dielectric substrate. By using the high-frequency and low-frequency coupling design separately, the antenna bandwidth is increased, enabling the antenna to work in a wider frequency range and improving the antenna's receiving and transmitting performance. In addition, the structure is simple and the weight is light.

[0013] 2. In this utility model, by including four circular high-frequency coupling patches, four rectangular low-frequency coupling patches, and four feeding copper pillars, and by arranging the four feeding copper pillars at 90° intervals, a 90° phase difference input can be provided to the four feeding stubs, realizing multi-point coupling and increasing antenna bandwidth and signal transmission stability. By arranging radiating coupling stubs and sidewall stubs, good antenna matching performance can be obtained. The combination of four radiating coupling stubs at equal intervals can improve antenna matching performance.

[0014] 3. In this utility model, by setting the depth of the cavity to be 4 / 5 of the thickness of the single-layer dielectric substrate, the weight can be significantly reduced; by setting multiple metal through holes, antenna matching can be optimized, and production processes can be reduced, thereby reducing costs and increasing efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the upper surface of this utility model.

[0017] Figure 2 This is a schematic diagram of the overall structure of the lower surface of this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Single-layer dielectric substrate; 2. Circular high-frequency radiating patch; 3. Circular low-frequency radiating patch; 4. Circular high-frequency coupling patch; 5. Rectangular low-frequency coupling patch; 6. Non-metallic gap; 7. Feeding copper pillar; 8. Radiating coupling stub; 9. Sidewall stub; 10. Metallic ground; 11. Metallic via. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0021] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] This utility model provides a lightweight full-band positioning antenna, such as Figure 1 and Figure 2 As shown, the device includes a single-layer dielectric substrate 1. A circular high-frequency radiating patch 2 is attached to the center of the upper surface of the single-layer dielectric substrate 1. A cavity is formed on the lower surface of the single-layer dielectric substrate 1, and a circular low-frequency radiating patch 3 is attached to the bottom of the cavity. At least one circular high-frequency coupling patch 4 is provided inside the circular high-frequency radiating patch 2, and at least one rectangular low-frequency coupling patch 5 is provided inside the circular low-frequency radiating patch 3. The circular high-frequency coupling patch 4 and the rectangular low-frequency coupling patch 5 correspond one-to-one. The circular high-frequency coupling patch 4 and the circular high-frequency radiating patch 2, as well as the rectangular low-frequency coupling patch 5 and the circular low-frequency radiating patch 3, are spaced apart by non-metallic gaps 6. The circular high-frequency coupling patch 4 and the rectangular low-frequency coupling patch 5 are connected by a power feeding copper pillar 7, specifically connected to the center of the circular high-frequency coupling patch 4.

[0027] In this embodiment, the high-frequency part is fed out through the upper surface of the single-layer dielectric substrate 1, and the low-frequency part is fed out through the cavity on the lower surface of the single-layer dielectric substrate 1. By using the high-frequency and low-frequency coupling design separately, the antenna bandwidth is increased, enabling the antenna to operate in a wider frequency range and improving the antenna's receiving and transmitting performance. In addition, the structure is simple and the weight is light.

[0028] In this utility model, preferably, such as Figure 1 and Figure 2As shown, the circular high-frequency coupling patch 4, the rectangular low-frequency coupling patch 5, and the power supply copper pillar 7 each include four, and the four power supply copper pillars 7 are distributed at 90° intervals.

[0029] In this embodiment, by including four circular high-frequency coupling patches 4, four rectangular low-frequency coupling patches 5, and four feeding copper pillars 7, and by arranging the four feeding copper pillars 7 at 90° intervals, a 90° phase difference input can be provided to the four feeding stubs, realizing multi-point coupling and increasing antenna bandwidth and signal transmission stability.

[0030] In this utility model, preferably, such as Figure 1 and Figure 2 As shown, a radiation coupling branch 8 is provided at the edge of the upper surface of the single-layer dielectric substrate 1. The radiation coupling branch 8 is spaced apart from the circular high-frequency radiation patch 2. A sidewall branch 9 is provided on the sidewall of the single-layer dielectric substrate 1. One end of the sidewall branch 9 is connected to the radiation coupling branch 8, and the other end is connected to the metal ground 10 on the lower surface of the single-layer dielectric substrate 1, wherein the metal ground 10 is the GND plane of the single-layer dielectric substrate 1. There are four radiation coupling branches 8 and four sidewall branches 9, which correspond one-to-one. The four radiation coupling branches 8 are equally spaced around the center of the single-layer dielectric substrate 1. The metal ground 10 is connected to all four sidewall branches 9.

[0031] In this embodiment, good antenna matching performance can be obtained by setting up radiating coupling stubs 8 and sidewall stubs 9; the antenna matching performance can be improved by combining four radiating coupling stubs 8 that are equally spaced.

[0032] In this utility model, preferably, such as Figure 1 and Figure 2 As shown, the depth of the cavity is 4 / 5 of the thickness of the single-layer dielectric substrate 1, wherein the thickness of the single-layer dielectric substrate 1 is 10mm and the depth of the cavity is 8mm; a plurality of metal through holes 11 are provided at intervals around the center of the single-layer dielectric substrate 1 at the bottom of the cavity, one end of the metal through hole 11 is connected to the circular low-frequency radiation patch 3, and the other end is provided at intervals with the circular high-frequency radiation patch 2.

[0033] In this embodiment, by setting the depth of the cavity to be 4 / 5 of the thickness of the single-layer dielectric substrate 1, the weight can be significantly reduced; by setting multiple metal through holes 11, antenna matching can be optimized, and the manufacturing process can be reduced, thus reducing costs and increasing efficiency.

[0034] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A lightweight full-band positioning antenna, comprising a single-layer dielectric substrate (1), wherein a circular high-frequency radiating patch (2) is attached to the center of the upper surface of the single-layer dielectric substrate (1), and a cavity is formed on the lower surface of the single-layer dielectric substrate (1), wherein a circular low-frequency radiating patch (3) is attached to the bottom of the cavity, characterized in that, The circular high-frequency radiation patch (2) is provided with at least one circular high-frequency coupling patch (4), and the circular low-frequency radiation patch (3) is provided with at least one rectangular low-frequency coupling patch (5). The circular high-frequency coupling patch (4) and the rectangular low-frequency coupling patch (5) correspond one-to-one. The circular high-frequency coupling patch (4) and the circular high-frequency radiation patch (2) and the rectangular low-frequency coupling patch (5) and the circular low-frequency radiation patch (3) are all separated by non-metallic gaps (6). The circular high-frequency coupling patch (4) and the rectangular low-frequency coupling patch (5) are connected by a power feeding copper pillar (7).

2. The lightweight full-band positioning antenna according to claim 1, wherein, The circular high-frequency coupling patch (4), the rectangular low-frequency coupling patch (5), and the power supply copper pillar (7) each include four, and the four power supply copper pillars (7) are distributed at 90° intervals.

3. The lightweight full-band positioning antenna according to claim 2, wherein, Radiation coupling stubs (8) are provided at the edge of the upper surface of the single-layer dielectric substrate (1). The radiation coupling stubs (8) are spaced apart from the circular high-frequency radiation patch (2). Sidewall stubs (9) are provided on the sidewall of the single-layer dielectric substrate (1). One end of the sidewall stub (9) is connected to the radiation coupling stub (8), and the other end is connected to the metal ground (10) on the lower surface of the single-layer dielectric substrate (1).

4. The lightweight full-band positioning antenna according to claim 3, wherein, The radiation coupling stub (8) and the sidewall stub (9) each include four, and they correspond one to one. The four radiation coupling stubs (8) are distributed at equal intervals around the center of the single-layer dielectric substrate (1). The metal ground (10) is connected to the four sidewall stubs (9).

5. The lightweight full-band positioning antenna according to any one of claims 1 to 4, characterized in that, The depth of the cavity is 4 / 5 of the thickness of the single-layer dielectric substrate (1).

6. A lightweight full-band positioning antenna according to claim 5, characterized in that, The bottom of the cavity is surrounded by a plurality of metal through holes (11) spaced apart from the center of the single-layer dielectric substrate (1). One end of the metal through hole (11) is connected to the circular low-frequency radiation patch (3), and the other end is spaced apart from the circular high-frequency radiation patch (2).

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