Satellite positioning navigation antenna

Abstract

This invention provides a satellite positioning and navigation antenna, comprising a dielectric substrate and a low-frequency radiating layer disposed above the dielectric substrate. A ground layer is disposed on the surface of the dielectric substrate. The antenna also includes a vibrator array comprising multiple sub-element vibrators arranged around a layout space defined by the dielectric substrate and the low-frequency radiating layer. Each sub-element vibrator is grounded through the ground layer. By using multiple sub-element vibrators, this invention improves the isolation of the satellite positioning and navigation antenna, reduces the cross-polarization level, increases the antenna gain, optimizes the radiation pattern, and enhances the positioning stability and accuracy of the satellite positioning and navigation antenna.

Description

Technical Field

[0001] This invention belongs to the field of satellite positioning and navigation technology, and specifically relates to a satellite positioning and navigation antenna. Background Technology

[0002] With the continuous development of satellite navigation technology, satellite navigation systems such as BDS, GPS, GLONASS, and GALILEO are widely used in various navigation terminals. However, the reliability, stability, and positioning accuracy of using a single satellite navigation system are difficult to guarantee. Integrating multiple satellite navigation systems can achieve better positioning performance. Therefore, open satellite positioning and navigation antennas that are compatible with multiple satellite navigation systems are increasingly becoming the mainstream in the industry.

[0003] Modern satellite positioning and navigation antennas mainly stack high-frequency radiating elements and low-frequency radiating elements to expand the bandwidth. However, when high-frequency and low-frequency radiating elements are stacked together, they have a strong mutual coupling effect, resulting in poor convergence of active S-parameters, low antenna gain, which is not conducive to signal reception and affects positioning stability and accuracy. Summary of the Invention

[0004] The purpose of this invention is to solve at least one of the above-mentioned problems by providing a satellite positioning and navigation antenna.

[0005] To meet the various objectives of this invention, the following technical solutions are adopted:

[0006] To achieve one of the objectives of this invention, a satellite positioning and navigation antenna is provided, comprising a dielectric substrate and a low-frequency radiating layer disposed above the dielectric substrate, wherein a grounding layer is disposed on the surface of the dielectric substrate, and further comprising a vibrator array, wherein the vibrator array comprises a plurality of sub-element vibrators, the plurality of sub-element vibrators being disposed around a layout space jointly defined by the dielectric substrate and the low-frequency radiating layer, and each sub-element vibrator being grounded through the grounding layer.

[0007] Furthermore, the oscillator array includes a first sub-element oscillator disposed on a dielectric substrate.

[0008] The first sub-element oscillator is formed by hollowing out the ground layer of the dielectric substrate.

[0009] Furthermore, the low-frequency radiation layer is disposed on a low-frequency dielectric plate, and the low-frequency dielectric plate is disposed on the dielectric substrate. The oscillator array includes a second sub-element oscillator disposed on the low-frequency dielectric plate.

[0010] The second sub-element oscillator is a metal component that is fixed to the grounding layer.

[0011] Furthermore, a low-frequency dielectric substrate is disposed on a dielectric substrate, such that the dielectric substrate forms an edge portion, and a plurality of first sub-element oscillators are symmetrically disposed on the edge portion along the circumference of the low-frequency dielectric substrate.

[0012] Furthermore, multiple second sub-element oscillators are arranged around the surface of or inside the sidewall of the low-frequency dielectric plate.

[0013] Furthermore, the sub-element oscillator includes two symmetrical oscillator arms, the oscillator arms including a first arm and a second arm connected to each other.

[0014] Furthermore, the satellite positioning and navigation antenna also includes a high-frequency dielectric plate disposed above the low-frequency dielectric plate and a high-frequency radiation layer disposed on the front side of the high-frequency dielectric plate.

[0015] Furthermore, the high-frequency dielectric substrate is provided with a high-frequency feed point, and the low-frequency dielectric substrate is provided with a low-frequency feed point. The low-frequency feed point is connected to the low-frequency radiation layer and the ground layer in sequence through a low-frequency feed pin, and the high-frequency feed point is connected to the high-frequency radiation layer and the ground layer in sequence through a high-frequency feed pin.

[0016] Compared with existing technologies, the present invention has many advantages, including but not limited to:

[0017] On the one hand, in the oscillator array of the satellite positioning and navigation antenna of the present invention, multiple sub-element oscillators are respectively arranged around the dielectric substrate and the low-frequency radiation layer. By setting multiple sub-element oscillators, the isolation of the satellite positioning and navigation antenna is improved, the cross-polarization level is reduced, the antenna gain is increased, the bandwidth is expanded, and the radiation pattern is optimized, thereby improving the positioning stability and accuracy of the satellite positioning and navigation antenna.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the structure of a satellite positioning and navigation antenna according to a typical embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of a satellite positioning and navigation antenna according to another embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the structure of the first sub-element oscillator of a satellite positioning and navigation antenna according to another embodiment of the present invention.

[0023] Figure 4This is a schematic diagram of the structure of the second sub-element oscillator of a satellite positioning and navigation antenna according to another embodiment of the present invention.

[0024] Figure 5 This is the gain diagram obtained by actual measurement when the test antenna is the satellite positioning and navigation antenna of the present invention with only the first array loaded.

[0025] Figure 6 This is the gain diagram obtained by actual measurement when the test antenna is the satellite positioning and navigation antenna of the present invention with only the second array loaded.

[0026] Figure 7 This is the gain diagram obtained by actual measurement when the test antenna is the satellite positioning and navigation antenna of the present invention.

[0027] Figure 8 This is the gain diagram obtained from actual measurements when the test antenna is a regular satellite positioning and navigation antenna. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0029] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, and / or components, nor does it exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0030] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0031] This invention provides a satellite positioning and navigation antenna, wherein a dielectric substrate, a low-frequency dielectric plate, a low-frequency radiating layer, and a high-frequency radiating layer are stacked sequentially. A first array composed of multiple first sub-element oscillators is provided on the dielectric substrate, and a second array composed of multiple second sub-element oscillators is provided on the low-frequency dielectric plate. The first array and the second array can jointly reduce the coupling effect between the high-frequency radiating layer and the low-frequency radiating layer and improve the gain, so as to be suitable for receiving signals from different satellite navigation systems.

[0032] In a typical embodiment of the present invention, combined with Figure 1 The satellite positioning and navigation antenna 1 includes a dielectric substrate 11, a low-frequency radiating element 2, a high-frequency radiating element 3, and multiple sub-element oscillators. The low-frequency radiating element 2 is disposed on the front side of the dielectric substrate 11, and the high-frequency radiating element 3 is disposed on top of the low-frequency radiating element 2; that is, the high-frequency radiating element 3, the low-frequency radiating element 2, and the dielectric substrate 11 are stacked sequentially. A ground layer 12 is provided on the front side of the dielectric substrate 11. The ground layer 12 is a metal layer.

[0033] Specifically, the low-frequency radiating unit 2 includes a low-frequency dielectric substrate 21 and a low-frequency radiating layer 22. The low-frequency dielectric substrate 21 is disposed on the front side of the dielectric substrate 11. The low-frequency dielectric substrate 21 includes a front side, a back side, and a sidewall 212. The back side of the low-frequency dielectric substrate 21 is connected to the front side of the dielectric substrate 11. The low-frequency radiating layer 22 is disposed on the front side of the low-frequency dielectric substrate 21 to radiate low-frequency signals. In this embodiment, the low-frequency radiating layer 22 operates in the 1164MHz-1278MHz frequency band.

[0034] The low-frequency radiation layer 22 is annular, and its extension direction corresponds to the extension direction of the edge of the front side of the low-frequency dielectric substrate 21. This makes the low-frequency radiation layer 22 a ring structure surrounding the high-frequency radiation unit 3, ensuring that the low-frequency radiation layer 22 does not coincide with or overlap with the projection of the high-frequency radiation unit 3 onto the front side of the low-frequency dielectric substrate 21, thereby reducing the mutual coupling between the low-frequency radiation unit 2 and the high-frequency radiation unit 3. In one embodiment, the low-frequency radiation layer 22 is annular, and the front side of the low-frequency dielectric substrate 21 is circular.

[0035] The high-frequency radiation unit 3 includes a high-frequency dielectric substrate 31 and a high-frequency radiation layer 32. The high-frequency dielectric substrate 31 is disposed on the front side of the low-frequency dielectric substrate 21. The high-frequency dielectric substrate 31 includes a front side and a back side, with the back side of the high-frequency dielectric substrate 31 connected to the front side of the low-frequency dielectric substrate 21. The high-frequency radiation layer 32 is disposed on the front side of the high-frequency dielectric substrate 31 to radiate high-frequency signals. Specifically, in this embodiment, the high-frequency radiation layer 32 operates in the 1557MHz-1612MHz frequency band. In one embodiment, the front side of the high-frequency dielectric substrate 31 is circular, and the high-frequency radiation layer 32 is also correspondingly circular.

[0036] In a typical embodiment of the present invention, the plurality of sub-element oscillators are divided into first sub-element oscillators 121 and second sub-element oscillators 211, wherein the plurality of first sub-element oscillators 121 form a first array and the plurality of second sub-element oscillators 211 form a second array. The first array and the second array interact to improve the isolation of the satellite positioning and navigation antenna 1, reduce the cross-polarization level, increase the gain, expand the bandwidth and optimize the radiation pattern, thereby improving the positioning stability and accuracy of the satellite positioning and navigation antenna 1.

[0037] A low-frequency dielectric substrate 21 is disposed on the front side of the dielectric substrate 11, covering a portion of the front side area of ​​the dielectric substrate 11, such that the edge area of ​​the front side of the dielectric substrate 11 is exposed, forming an edge portion 122. The low-frequency dielectric substrate 21 is disposed at the center of the front side of the dielectric substrate 11, such that the edge portion 122 is annular.

[0038] The first array is disposed on the edge portion 122 of the dielectric substrate 11. The plurality of first sub-element oscillators 121 of the first array are arranged sequentially along the extension direction of the edge portion 122. That is to say, the plurality of first sub-element oscillators 121 of the first array are arranged around the low-frequency dielectric plate 21 to avoid mutual interference between the first array and the low-frequency radiation layer 22, the high-frequency radiation layer 32 and the second array, thereby improving electrical performance.

[0039] In one embodiment, the dielectric substrate 11 is circular, making the edge portion 122 annular, and the plurality of first sub-element oscillators 121 of the first array are uniformly arranged along the edge portion 122. Specifically, in this embodiment, the plurality of first sub-element oscillators 121 of the first array have a centrally symmetrical structure about the same center point, which is beneficial to improving the symmetry of the radiation pattern of the satellite positioning and navigation antenna 1 and improving the radiation performance.

[0040] The ground layer 12 is disposed on the front side of the dielectric substrate 11. The ground layer 12 is perforated to form the first sub-element oscillator 121; that is, the first sub-element oscillator 121 is a perforated or slotted structure disposed on the ground layer 12. Specifically, the first sub-element oscillator 121 includes two symmetrical first oscillator arms 1211. Each first oscillator arm 1211 includes a first arm 1212 and a second arm 1213. The first end of the first arm 1212 is connected to the edge of the front side of the dielectric substrate 11, and the second end of the first arm 1212 is connected to the second arm 1213. In one embodiment, the first arm 1212 and the second arm 1213 are arranged at an angle, preferably perpendicularly.

[0041] The first arms 1212 of the two first arms 1211 of the first sub-element oscillator 121 are arranged in parallel and extend in the same direction. The second arms 1213 of the two first arms 1211 of the first sub-element oscillator 121 extend in opposite directions, so that the two first arms 1211 of the first sub-element oscillator 121 have a symmetrical structure, which is beneficial to improving the symmetry of the radiation pattern of the satellite positioning and navigation antenna 1 and enhancing the radiation performance.

[0042] In one embodiment, the first arm 1212 of the first arm 1211 of the first sub-element oscillator 121 extends from the edge of the front side of the dielectric substrate 11 toward the center of the front side of the dielectric substrate 11.

[0043] In one embodiment, combined Figure 3 The first oscillator arm 1211 of the first sub-element oscillator 121 is further provided with a third arm 1214, which is connected to the second end of the second arm 1213, so that the first oscillator arm 1211 forms a semi-enclosed structure. In one embodiment, the third arm 1214 is set at an angle to the second arm 1213, preferably perpendicular to it.

[0044] The satellite positioning and navigation antenna 1 can improve the convergence of low-frequency active impedance, reduce the coupling effect between high-frequency radiation layer 32 and low-frequency radiation layer 22, reduce cross-polarization level, expand low-frequency bandwidth, and improve gain by setting the first sub-element oscillator 121.

[0045] The second array has a plurality of second sub-element oscillators 211 disposed on the side wall 212 of the low frequency dielectric plate 21. The plurality of second sub-element oscillators 211 of the second array are disposed sequentially along the extension direction of the side wall 212 of the low frequency dielectric plate 21. In other words, the plurality of second sub-element oscillators 211 of the second array are disposed around the low frequency dielectric plate 21 on the side wall 212 of the low frequency dielectric plate 21.

[0046] In one embodiment, the low-frequency dielectric substrate 21 is circular, and the sidewall 212 of the low-frequency dielectric substrate 21 is correspondingly annular. The plurality of second sub-element oscillators 211 of the second array are uniformly arranged along the extending direction of the sidewall 212. Specifically, in this embodiment, the plurality of second sub-element oscillators 211 of the second array have a centrally symmetrical structure about the same center point, which is beneficial to improving the symmetry of the radiation pattern of the satellite positioning and navigation antenna 1 and enhancing its radiation performance.

[0047] The second sub-element oscillator 211 is a metal component. One end of the second sub-element oscillator 211 is disposed on the ground layer 12, and the other end is disposed on the edge of the front side of the low-frequency dielectric substrate 21. Specifically, the second sub-element oscillator 211 includes two symmetrical second oscillator arms 2111, and the second oscillator arms 2111 include a third arm 2112 and a fourth arm 2113 connected to each other. The third arm 2112 is disposed on the side wall 212 of the low-frequency dielectric substrate 21 and is disposed along the thickness direction of the side wall 212. The first end of the third arm 2112 is connected to the ground layer 12, and the second end of the third arm 2112 is disposed on the edge of the front side of the low-frequency dielectric substrate 21 and is connected to the edge of the front side of the low-frequency dielectric substrate 21. The fourth arm 2113 is disposed on the edge of the front side of the low-frequency dielectric substrate 21, and the first end of the fourth arm 2113 is connected to the second end of the third arm 2112. The fourth arm 2113 extends along the edge of the front side of the low-frequency dielectric substrate 21. The low-frequency radiation layer 22 disposed on the front side of the low-frequency dielectric substrate 21 does not contact the second sub-element oscillator 211. The low-frequency radiation layer 22 is disposed close to the high-frequency dielectric substrate 31 relative to the second sub-element oscillator 211. In one embodiment, the third arm 2112 and the fourth arm 2113 are perpendicular to each other to facilitate manufacturing and reduce the difficulty of production and processing.

[0048] The third arms 2112 of the two second arms 2111 of the second sub-element oscillator 211 are arranged in parallel and extend in the same direction. The fourth arms 2113 of the two second arms 2111 of the second sub-element oscillator 211 extend in opposite directions, so that the two second arms 2111 of the second sub-element oscillator 211 have a symmetrical structure, which is beneficial to improving the symmetry of the radiation pattern of the satellite positioning and navigation antenna 1 and enhancing the radiation performance.

[0049] In one embodiment, combined Figure 2The second sub-element oscillator 211 is disposed inside the low-frequency dielectric substrate 21 and is not exposed outside the low-frequency dielectric substrate 21. Specifically, a first metallized via 213 is provided on the low-frequency dielectric substrate 21, which connects to the second sub-element oscillator 211 to facilitate connection between the second sub-element oscillator 211 and the front side of the low-frequency dielectric substrate 21. Furthermore, the third arm 2112 of each of the two second oscillator arms 2111 of the second sub-element oscillator 211 is also connected through the second metallized via 123 disposed inside the low-frequency dielectric substrate 21. Preferably, the first metallized via 213 corresponds to the intersection of the third arm 2112 and the fourth arm 2113 of the second oscillator arm 2111 of the second sub-element oscillator 211. The second metallized via 123 corresponds to the first end of the third arm 2112 of each of the two second oscillator arms 2111 of the second sub-element oscillator 211.

[0050] In one embodiment, combined Figure 4 The two second oscillator arms 2111 of the second sub-element oscillator 211 are connected, and each second oscillator arm 2111 has multiple bends 2114, forming a bent structure. The two second oscillator arms 2111 of the second sub-element oscillator 211 are symmetrical to each other and connected, making the second sub-element oscillator 211 an integrated symmetrical structure. Preferably, the second oscillator arm 2111 is divided into a protruding structure and a concave structure by the bends 2114, with the concave structure and the protruding structure arranged sequentially to improve the electrical performance of the second sub-element oscillator 211.

[0051] The satellite positioning and navigation antenna 1 can improve the convergence of the low-frequency active impedance by setting the second sub-element oscillator 211, reduce the coupling effect between the high-frequency radiation layer 32 and the low-frequency radiation layer 22, reduce the cross-polarization level, expand the bandwidth, and improve the high-frequency and low-frequency gain by setting the second sub-element oscillator 211.

[0052] In one embodiment, the plurality of first sub-element oscillators 121 of the first array are centrally symmetrical about a first point, and the plurality of second sub-element oscillators 211 of the second array are also centrally symmetrical about the first point, so as to improve the symmetry of the radiation pattern of the satellite positioning and navigation antenna 1 and enhance its radiation performance.

[0053] In a further embodiment, the first array and the second array are correspondingly arranged. Along the extending direction of the edge portion 122 of the dielectric substrate 11, each first sub-element oscillator 121 is correspondingly arranged with two second sub-element oscillators 211, and the two second sub-element oscillators 211 are respectively arranged on both sides of the corresponding first sub-element oscillator 121. Specifically, the two second sub-element oscillators 211 are respectively arranged on the sides of the two first oscillator arms 1211 of the corresponding first sub-element oscillator 121, reducing the coupling effect between the second sub-element oscillator 211 and the first sub-element oscillator 121 and improving electrical performance.

[0054] In a typical embodiment of the present invention, a high-frequency feed point 5 is also provided on the front side of the high-frequency dielectric substrate 31, which is used to feed the high-frequency radiation layer 32; a low-frequency feed point (not shown) is provided on the low-frequency dielectric substrate, which is used to feed the low-frequency radiation layer 22.

[0055] Specifically, the low-frequency feed point is fed through a low-frequency feed needle, which passes through the low-frequency feed point 4 disposed on the low-frequency radiation layer 22. Figure 1 In a partial perspective view, the low-frequency feed point 4 is disposed on the low-frequency radiation layer 22 to feed the low-frequency radiation layer 22. The low-frequency feed pin (not shown) is also connected to the ground layer 12 disposed on the dielectric substrate 11; that is, the low-frequency feed pin is connected to both the low-frequency feed point 4 and the ground layer 12. In one embodiment, the low-frequency feed point 4 is connected to an external device via an external cable, so that the external device can feed signals to the low-frequency feed point 4 through the external cable.

[0056] Multiple low-frequency feed points 4 are provided on the low-frequency dielectric substrate. These multiple low-frequency feed points 4 are correspondingly connected to multiple low-frequency feed pins. These multiple low-frequency feed points 4 feed different regions of the low-frequency radiation layer 22, ensuring that each region of the low-frequency radiation layer 22 can be well excited and radiate signals, thus improving the symmetry of the radiation pattern of the satellite positioning and navigation antenna 1. Preferably, the multiple low-frequency feed points 4 are uniformly arranged around the same center.

[0057] Specifically, the high-frequency feed point 5 is connected to the high-frequency radiation layer 32 via a high-frequency feed pin (not shown) to feed the high-frequency radiation layer 32. The high-frequency feed pin is also connected to a ground layer 12 disposed on the dielectric substrate 11; that is, the two ends of the high-frequency feed pin are respectively the high-frequency feed point 5 and the ground layer 12, and the high-frequency feed pin also passes through the high-frequency radiation layer 32. In one embodiment, the high-frequency feed point 5 is connected to an external device via an external cable, so that the external device can feed signals to the high-frequency feed point 5 through the external cable.

[0058] The high-frequency dielectric substrate 31 is provided with multiple high-frequency feed points 5, which are connected to multiple high-frequency feed pins. These multiple high-frequency feed points 5 respectively feed different regions of the high-frequency radiation layer 32, so that each region of the high-frequency radiation layer 32 can be well excited and radiated, thereby improving the symmetry of the radiation pattern of the satellite positioning and navigation antenna 1. Preferably, the multiple high-frequency feed points 5 and the multiple low-frequency feed points 4 are uniformly arranged around the same center, and the distance between the high-frequency feed points 5 and the center is less than the distance between the low-frequency feed points 4 and the center.

[0059] The satellite positioning and navigation antenna 1 improves the isolation between two adjacent feed points among multiple low-frequency feed points 4 and multiple high-frequency feed points 5 by setting a first sub-element oscillator 121 and a second sub-element oscillator 211, thereby enhancing the radiation performance of the satellite positioning and navigation antenna 1.

[0060] See Figure 5 The figure shows the gain test results of the satellite positioning and navigation antenna of the present invention when only the first array is loaded. As can be seen from the figure, the antenna gain range of the satellite positioning and navigation antenna of the present invention is 0.17dBi-4.62dBi in the 1164MHz-1278MHz frequency band and 5.75dBi-6.49dBi in the 1557MHz-1612MHz frequency band.

[0061] See Figure 6 The figure shows the gain test results of the satellite positioning and navigation antenna of this invention when only the second array is loaded. As can be seen from the figure, the gain range of a typical satellite positioning and navigation antenna is 2.62dBi-4.20dBi in the 1164MHz-1278MHz frequency band and 5.17dBi-6.07dBi in the 1557MHz-1612MHz frequency band.

[0062] See Figure 7 The figure shows the gain test results when the antenna is the satellite positioning and navigation antenna of the present invention. As can be seen from the figure, the antenna gain range of the satellite positioning and navigation antenna of the present invention is 4.26dBi-5.47dBi in the 1164MHz-1278MHz frequency band and 5.62dBi-6.39dBi in the 1557MHz-1612MHz frequency band.

[0063] See Figure 8 The figure shows the gain test results when the antenna is a common satellite positioning and navigation antenna. As can be seen from the figure, the antenna gain range of a common satellite positioning and navigation antenna is -1.81dBi to 3.18dBi in the 1164MHz-1278MHz frequency band and 5.48dBi to 6.33dBi in the 1557MHz-1612MHz frequency band.

[0064] Depend on Figures 5 to 8 It is evident that the antenna gain of the satellite positioning and navigation antenna of the present invention is significantly superior to that of ordinary satellite positioning and navigation antennas when only the first array, only the second array, and both the first and second arrays are loaded. Furthermore, the antenna gain of the satellite positioning and navigation antenna of the present invention when both the first and second arrays are loaded is superior to that when only the first or second array is loaded, exhibiting better radiation performance.

[0065] In summary, the satellite positioning and navigation antenna of the present invention improves the isolation of the satellite positioning and navigation antenna, reduces the coupling effect between the high-frequency radiation layer and the low-frequency radiation layer, reduces the cross-polarization level, improves the gain of high and low frequencies, expands the high and low frequency bandwidth, and optimizes the radiation pattern by setting a first sub-element oscillator and a second sub-element oscillator.

[0066] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention is not limited to the specific combination of the above-described technical features, but also includes other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions as those in the present invention.

[0067] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

Claims

1. A satellite positioning and navigation antenna, comprising a dielectric substrate and a low-frequency radiating layer disposed above the dielectric substrate, wherein a ground layer is disposed on the surface of the dielectric substrate, characterized in that, It also includes an oscillator array, which includes multiple sub-element oscillators arranged around a layout space defined by the dielectric substrate and the low-frequency radiation layer, and each sub-element oscillator is grounded through the ground layer; the oscillator array includes a first sub-element oscillator disposed on the dielectric substrate; the first sub-element oscillator is formed by hollowing out the ground layer of the dielectric substrate.

2. The satellite positioning and navigation antenna as described in claim 1, characterized in that, The low-frequency radiation layer is disposed on the low-frequency dielectric plate, which is disposed on the dielectric substrate. The oscillator array further includes a second sub-element oscillator disposed on the low-frequency dielectric plate.

3. The satellite positioning and navigation antenna as described in claim 2, characterized in that, The second sub-element oscillator is a metal component that is fixed to the grounding layer.

4. The satellite positioning and navigation antenna as described in claim 2, characterized in that, A low-frequency dielectric substrate is disposed on a dielectric substrate, such that the dielectric substrate forms an edge portion, and a plurality of first sub-element oscillators are symmetrically disposed on the edge portion along the circumference of the low-frequency dielectric substrate.

5. The satellite positioning and navigation antenna as described in claim 2, characterized in that, Multiple second sub-element oscillators are arranged around the surface or inside the sidewall of the low-frequency dielectric plate.

6. The satellite positioning and navigation antenna as described in claim 1, characterized in that, The sub-element oscillator includes two symmetrical oscillator arms, which are a first arm and a second arm connected to each other.

7. The satellite positioning and navigation antenna as described in claim 2, characterized in that, The satellite positioning and navigation antenna also includes a high-frequency dielectric plate disposed above the low-frequency dielectric plate and a high-frequency radiation layer disposed on the front side of the high-frequency dielectric plate.

8. The satellite positioning and navigation antenna as described in claim 7, characterized in that, The high-frequency dielectric substrate is provided with a high-frequency feed point, and the low-frequency dielectric substrate is provided with a low-frequency feed point. The low-frequency feed point is connected to the low-frequency radiation layer and the ground layer in sequence through a low-frequency feed pin, and the high-frequency feed point is connected to the high-frequency radiation layer and the ground layer in sequence through a high-frequency feed pin.

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