Small integrated GNSS antenna

Abstract

This application relates to the field of antenna technology, and more particularly to a small integrated GNSS antenna, comprising a first dielectric layer and a second dielectric layer, both made of high dielectric constant materials; an antenna assembly is integrated at the side end of the first dielectric layer, and an arc-shaped stub pair is disposed on the surface of the first dielectric layer; a blade-shaped short-circuit stub is disposed at the side end of the first dielectric layer, and the blade-shaped short-circuit stub and the arc-shaped stub pair together realize dual-band operation of the 2.4 GHz and 5 GHz frequency bands in the antenna assembly. A fixing part is formed by a radially horizontally extending side end of the second dielectric layer for connecting the first dielectric layer and the second dielectric layer. The GNSS antenna uses two dielectric layers to achieve dual-band operation; the first and second dielectric layers are made of high dielectric constant materials, and the arc-shaped stub pair is disposed on the first radiating patch, together realizing the miniaturization design of the L2 band antenna.

Description

Technical Field

[0001] This application relates to the field of antenna technology, and in particular to a small integrated GNSS antenna. Background Technology

[0002] GNSS antennas are key devices used to receive signals from global navigation satellite systems (such as GPS, BeiDou, GLONASS, Galileo, etc.). Their working principle involves the antenna elements receiving electromagnetic wave signals in specific frequency bands emitted by satellites and converting them into electrical signals for subsequent processing by equipment, thereby achieving functions such as positioning, navigation, and timing. Most existing stacked antennas used for WiFi / BT communication only resonate in the 2.4 GHz band. Even those that achieve 5 GHz band operation have overly complex structures and are too large.

[0003] In practical applications, existing GNSS antennas have revealed numerous problems. Currently, GNSS antennas using stacked and octet designs suffer from excessive size. With the trend towards miniaturization of electronic devices, the need for miniaturized GNSS antennas is becoming increasingly urgent. Utility Model Content

[0004] This application provides a small integrated GNSS antenna, which aims to solve the technical problem of the large size of stacked antennas in the prior art.

[0005] In a first aspect, a small integrated GNSS antenna includes a first dielectric layer and a second dielectric layer, both made of high dielectric constant materials;

[0006] The first dielectric layer has an antenna assembly integrated on its side, and the surface of the first dielectric layer has arc-shaped stub pairs.

[0007] The first dielectric layer has a blade-shaped short-circuit stub on its side. The blade-shaped short-circuit stub and the arc-shaped stub together enable the dual-band operation of the 2.4G and 5G frequency bands in the antenna assembly.

[0008] Furthermore, the antenna assembly includes a 4G main antenna, a 4G secondary antenna, and a WiFi / BT antenna, and the lines connecting the 4G main antenna, the 4G secondary antenna, and the WiFi / BT antenna form an equilateral triangle.

[0009] Furthermore, a first radiating patch is provided on the upper surface of the first dielectric layer for resonating low-frequency operating band, and the arc-shaped stub pair is disposed on the first radiating patch; a second radiating patch is provided on the lower surface of the first dielectric layer.

[0010] Furthermore, the first radiating patch is provided with four first power feeding holes that are equally spaced along the axis of the first dielectric layer.

[0011] Furthermore, the arc-shaped branch pair includes a plurality of first arc-shaped branches spaced apart, each of which is disposed on the surface of the first radiating patch.

[0012] Furthermore, a plurality of centrally symmetrical and equally spaced short-circuit holes are provided on the first dielectric layer, each of which is a metallized via for grounding the first radiating patch.

[0013] Furthermore, a plurality of fixing holes are formed on the first dielectric layer, each fixing hole being a non-metallized via that is symmetrical about the center of the first dielectric layer and equally spaced; the first radiating patch is provided with an arc-shaped groove around each fixing hole to avoid the fixing hole.

[0014] Furthermore, a fixing portion is formed on the side end of the second dielectric layer extending horizontally in the radial direction to connect the first dielectric layer and the second dielectric layer.

[0015] Furthermore, a third radiating patch is provided on the upper surface of the second dielectric layer for resonant high-frequency operation, and a fourth radiating patch is provided on the lower surface of the second dielectric layer.

[0016] Furthermore, the third radiating patch is provided with a plurality of second power feeding holes, each of which is a metallized via. The second power feeding holes are symmetrically distributed about the center of the second dielectric layer and are equally spaced to power the third radiating patch.

[0017] The technical solutions provided in this application have the following advantages compared with the prior art:

[0018] This technical solution for a GNSS antenna employs a two-layer dielectric structure to achieve dual-band operation. The first dielectric layer is made of a high-dielectric-constant material, and arc-shaped stubs are incorporated into the first radiating patch to achieve miniaturization of the L2 band antenna. The second dielectric layer, also made of a high-dielectric-constant material, combines a rectangular stub structure with the second radiating patch to further minimize the antenna's size. A fixing component on the second dielectric layer reduces the weight of the L1 band antenna, and connectors secure the second and first dielectric layers together, enhancing the overall robustness of the GNSS antenna. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0020] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0022] Figure 1 A schematic diagram of the structure of a small integrated GNSS antenna provided for an embodiment of this utility model.

[0023] Figure 2 This is a structural schematic diagram of the small integrated GNSS antenna provided in an embodiment of the present invention from another perspective.

[0024] Figure 3 This is a schematic diagram of the structure of the first dielectric layer provided in an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the structure of the second dielectric layer provided in an embodiment of the present invention.

[0026] Figure 5 The simulated passive gain curve of the small integrated GNSS antenna in the L2 band provided by this utility model.

[0027] Figure 6 The simulated passive gain curve of the small integrated GNSS antenna in the L1 band provided by this utility model.

[0028] Figure 7 Simulated passive gain curve of the WiFi / BT communication antenna of the small integrated GNSS antenna provided by this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10. Reflector; 20. First dielectric layer; 21. First radiating patch; 22. Second radiating patch; 23. Short-circuit hole; 24. Fixing hole; 25. Arc-shaped groove; 26. Center hole; 221. First power supply hole; 30. Second dielectric layer; 31. Third radiating patch; 32. Fourth radiating patch; 33. Second power supply hole; 34. Circular groove; 35. Circular slot; 36. Mounting hole; 40. Fixing part; 41. Connecting hole; 50. First arc-shaped branch Section; 60, First rectangular stub; 70, 4G main antenna; 71, Second arc-shaped stub; 72, Third arc-shaped stub; 73, Fourth arc-shaped stub; 74, Second rectangular stub; 75, First feed aperture; 76, First grounding stub; 77, Second grounding stub; 80, 4G secondary antenna; 90, WiFi / BT antenna; 91, Feed stub; 92, Second feed aperture; 93, Low-frequency arc-shaped stub; 94, Third grounding stub; 95, Fourth grounding stub. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0033] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0034] In order to solve the technical problem of the excessively large size of stacked antennas in existing technologies.

[0035] In one embodiment of this utility model, such as Figures 1 to 4 As shown, a small integrated GNSS antenna is provided, including a reflector 10, and a first dielectric layer 20 and a second dielectric layer 30, both made of high dielectric constant materials. The high dielectric constant material can be alumina ceramic or a polymer composite material, etc.

[0036] The antenna assembly is integrated on the side of the first dielectric layer 20, and arc-shaped stubs are provided on the surface of the first dielectric layer 20. Knife-shaped short-circuit stubs are also provided on the side of the first dielectric layer 20. The combination of the arc-shaped and knife-shaped short-circuit stubs on the surface of the first dielectric layer 20 enables dual-band operation of the 2.4 GHz and 5 GHz bands in the antenna assembly. A fixing part 40 extends radially horizontally from the side of the second dielectric layer 30 to connect the first dielectric layer 20 and the second dielectric layer 30. Both the first dielectric layer 20 and the second dielectric layer 30 are made of high dielectric constant materials. Since high dielectric constant materials can achieve large capacitance values ​​within a small physical size, capacitors can be designed to be smaller. Thus, using high dielectric constant materials can meet the miniaturization requirements of the antenna design. Specifically, the GNSS antenna uses two dielectric layers to achieve dual-band operation.

[0037] In this embodiment, as Figures 1 to 4As shown, there are four fixing parts 40, which are arranged in an arc shape, and each fixing part 40 is provided with a connecting hole 41. Specifically, four "ear"-shaped arc structures extend radially horizontally from the side end of the second dielectric layer 30. The middle of the fixing part 40 is a hollow structure. The design of the fixing part 40 can avoid the overall weight of the second dielectric layer 30 from being too large due to the distance between the connecting holes 41, thereby reducing the weight of the L1 band antenna. At the same time, the internal connecting holes 41 fix the second dielectric layer 30 and the first dielectric layer 20 to enhance the overall robustness of the GNSS antenna.

[0038] Furthermore, the connecting hole 41 provided on the fixing part 40 is a stepped hole and a non-metallized through hole, which is used to fix the second dielectric layer 30 and can also reduce the weight of the second dielectric layer 30.

[0039] In this embodiment, as Figures 1 to 3 As shown, the upper surface of the first dielectric layer 20 is provided with a first radiating patch 21, which is a circular radiating patch used for resonant low-frequency operation. Arc-shaped stubs are disposed on the first radiating patch 21. The lower surface of the first dielectric layer 20 is provided with a second radiating patch 22, which serves as a reference ground for the first radiating patch 21. Specifically, the first dielectric layer 20 and the second dielectric layer 30 respectively use an independent four-feed method to directly feed the first radiating patch 21 and the third radiating patch 31, thereby making it easier to realize dual-frequency operation of the antenna and improving the phase center stability of the antenna.

[0040] In this embodiment, as Figures 1 to 3 As shown, the first radiating patch 21 is provided with four first feed holes 221 that are equally spaced along the axis of the first dielectric layer 20. Specifically, the four first feed holes 221 are arranged at equal intervals of 0°, 90°, 180° and 270° to achieve the circular polarization performance of the antenna.

[0041] On the one hand, by applying signals with a 90° phase difference through four feed points, right-handed or left-handed circularly polarized waves can be effectively synthesized to meet the GNSS satellite signal reception requirements. At the same time, multiple resonant modes can be excited, widening the antenna bandwidth and improving compatibility with GNSS signals of different frequencies. On the other hand, the independent four-feed structure can further expand the impedance bandwidth and axial ratio bandwidth by adjusting the impedance matching and phase relationship of each feed point, optimizing the response to specific frequency bands, and achieving a more uniform current distribution, reducing pattern distortion, and improving antenna gain. In addition, this design also has beamforming capabilities, which can enhance the reception of low-elevation satellite signals by adjusting the amplitude and phase of the feed points, suppressing ground multipath interference, improving circular polarization purity, and ensuring signal reception quality.

[0042] In this embodiment, as Figures 1 to 3As shown, the arc-shaped stub pair includes multiple spaced-apart first arc-shaped stubs 50, each of which is disposed on the surface of the first radiating patch 21. There are six first arc-shaped stubs 50, with two adjacent stubs forming a group, and they are distributed symmetrically at a central angle of 120° on the first dielectric layer 20. Specifically, the pairing of the first arc-shaped stubs 50 into a 120° centrally symmetrical distribution extends the current path of the first radiating patch 21, thereby further enabling antenna miniaturization.

[0043] Specifically, the curved stubs redirect current along a curved path instead of a straight line, significantly increasing the equivalent electrical length. For example, a pair of curved stubs can increase the current path length by approximately 30%-50%, thereby reducing the resonant frequency without increasing the patch size. Three sets of 120° centrally symmetrical curved stubs form a uniform distribution, exciting multiple resonant modes and coupling them together, broadening the bandwidth while maintaining miniaturization. The symmetrical layout of the curved stubs concentrates the electromagnetic field distribution at the patch edge, enhancing the edge field strength and further improving radiation efficiency. Experiments show that this structure can reduce the patch size by 20%-30% while maintaining circular polarization performance and axial ratio bandwidth. From a circuit perspective, the curved stubs can be equivalent to a series LC resonant network, forming a parallel resonance with the patch body's capacitance, lowering the overall resonant frequency and achieving a balance between miniaturization and performance. This design effectively reduces the antenna size while maintaining antenna gain and circular polarization purity.

[0044] In this embodiment, as Figure 3 As shown, the first dielectric layer 20 is provided with a plurality of centrally symmetrical and equally spaced short-circuit holes 23. Each short-circuit hole 23 is a metallized via, which is used to ground the first radiating patch 21, thereby improving the antenna gain performance, and at the same time, to avoid the antenna feed pin of the third radiating patch 31.

[0045] In this embodiment, a plurality of centrally symmetrical and equally spaced metallized vias 23 are provided on the first dielectric layer 20. The purpose of this design is to improve antenna performance through the synergistic optimization of electromagnetics and structure. On the one hand, the vias 23 connect the first radiating patch 21 to the ground plane to form a magnetic dipole radiation structure, which enhances the vertical radiation component and reduces surface wave loss, thereby increasing the antenna gain by 1-3 dBi. In addition, the centrally symmetrical layout can selectively suppress higher-order resonant modes, purify the radiation pattern, and improve directivity. At the same time, the position of the vias is specially designed to avoid the feed pin of the third radiating patch 31, avoiding interference between the feed structure and the short-circuit path, and ensuring the stability of independent feeding of the two patches. The metallized vias also serve as mechanical supports, enhancing the reliability of the multilayer structure under vibration or temperature change environments.

[0046] In this embodiment, as Figure 3As shown, a plurality of fixing holes 24 are formed on the first dielectric layer 20. Each fixing hole 24 is a non-metallic via that is symmetrical about the center of the first dielectric layer 20 and evenly spaced. The first radiating patch 21 has arc-shaped grooves 25 around each fixing hole 24 to avoid the fixing holes 24, which also serves to extend the current path of the first radiating patch 21, which is beneficial to further improve the miniaturization design of the antenna. Furthermore, a central hole 26 is formed at the center of the first dielectric layer 20. The central hole 26 is a metallic via that can be used to fix the antenna and can change the surface current distribution of the radiating patch to enhance the gain performance of the antenna.

[0047] In this embodiment, as Figures 1 to 4 As shown, a third radiating patch 31 is provided on the upper surface of the second dielectric layer 30 for resonant high-frequency operation, and a fourth radiating patch 32 is provided on the lower surface of the second dielectric layer 30 as a reference ground for the third radiating patch 31. The third radiating patch 31 has multiple second feed holes 33, each of which is a metallized via. These second feed holes 33 are symmetrically distributed about the center of the second dielectric layer 30 and are equally spaced to feed the third radiating patch 31. Specifically, the second feed holes 33 are distributed on the second dielectric layer 30 at 0°, 90°, 180°, and 270° to feed the third radiating patch 31 and achieve circular polarization performance of the antenna.

[0048] Furthermore, multiple first rectangular stubs 60 are arranged around the outer periphery of the third radiating patch 31 with about the center symmetry. Each first rectangular stub 60 forms a rectangular stub pair to extend the surface current path of the third radiating patch 31, thereby enabling the miniaturization design of the antenna.

[0049] In this embodiment, as Figures 1 to 4 As shown, the fourth radiating patch 32 is provided with multiple circular slots 34 at the feed point positions of the third radiating patch 31 and the first radiating patch 21, respectively, to avoid short-circuiting the feed pin with the metal ground, thereby avoiding affecting the performance of the GNSS antenna.

[0050] Furthermore, a circular slot 35 of a certain depth is provided on the lower surface of the second dielectric layer 30 at the feed point position of the first radiating patch 21. The circular slot 35 can prevent the solder of the feed pin cap of the first radiating patch 21 from lifting the second dielectric layer 30, thereby allowing the second dielectric layer 30 to be placed tightly against the first dielectric layer 20. A mounting hole 36 is provided at the center of the second dielectric layer 30. The mounting hole 36 is a metallized via, which can be used to fix the antenna and to change the surface current distribution of the radiating patch to enhance the antenna's gain performance.

[0051] In this embodiment, as Figures 1 to 2As shown, the antenna assembly includes a 4G main antenna 70, a 4G secondary antenna 80, and a WiFi / BT antenna 90, with the lines connecting the 4G main antenna 70, the 4G secondary antenna 80, and the WiFi / BT antenna 90 forming an equilateral triangle. Specifically, the WiFi / BT antenna 90 achieves dual-band operation of 2.4G and 5G through a simple dual-stub PIFA structure. The 4G main antenna 70 and the 4G secondary antenna 80 are arranged symmetrically around the outer periphery of the first dielectric layer 20 about a 120° center, which helps to reduce the interference between communication antennas and the impact of asymmetrical distribution of communication antennas on the GNSS antenna.

[0052] Both the 4G main antenna 70 and the 4G secondary antenna 80 adopt a PIFA structure, with multiple second arc-shaped stubs 71, third arc-shaped stubs 72, and fourth arc-shaped stubs 73 to resonate multiple operating frequency bands. The second arc-shaped stub 71 is used to resonate the low-frequency operating band of 4G and is located on the outer edge of the upper surface of the first dielectric layer 20. The end of the second arc-shaped stub 71 extends into a second rectangular stub 74 along the side of the first dielectric layer 20 toward the second radiating patch 22, which can extend the current path of the low-frequency antenna and thus shorten the length of the low-frequency stub. At the same time, because the second rectangular stub 74 is located on the side of the dielectric layer, the impact of the end second rectangular stub 74 on the performance of the first radiating patch 21 can be reduced. The third arc-shaped stub 72 is used for the intermediate frequency band of resonant 4G. Part of it is located on the upper surface of the first dielectric layer 20, and another part is located on the side of the first dielectric layer 20, opposite to the second arc-shaped stub 71. This increases the spacing between the third arc-shaped stub 72 and the first radiating patch 21, thereby reducing the impact of the 4G main antenna 70 on the performance of the GNSS L2 band antenna. The fourth arc-shaped stub 73 is used for the high frequency band of resonant 4G and is arranged in the same direction as the second arc-shaped stub 71. The first feed aperture 75 of the 4G main antenna 70 has a first grounding stub 76 spaced at a certain distance to form a PIFA structure. An "L"-shaped second grounding stub 77 is provided on the side of the first dielectric layer 20, spaced apart from the first grounding stub 76 and extending in the same direction as the second arc-shaped stub 71, which can further improve the impedance matching of the 4G main antenna 70.

[0053] A WiFi / BT antenna 90 is arranged around the outer periphery of the first dielectric layer 20, forming a 120° centrally symmetrical distribution with the 4G main antenna 70 and the 4G secondary antenna 80. This arrangement helps to reduce the impact of asymmetrical distribution of communication antennas on the performance of the GNSS antenna. A second feed aperture 92 for the WiFi / BT antenna 90 is located on the feed stub 91. One end of the feed stub 91 extends outward along the outer periphery of the upper surface of the first dielectric layer 20 as a low-frequency arc-shaped stub 93 to generate resonance in the 2.4G band. A third grounding stub 94 extends from the other end of the feed stub 91, forming a PIFA structure together with the feed stub 91, the second feed aperture 92, and the low-frequency arc-shaped stub 93. A high-frequency "knife"-shaped fourth grounding stub 95 is arranged on the side of the first dielectric layer 20 to generate resonance in the 5G band, with an operating frequency range of 5150-5850MHz.

[0054] For example, the small integrated GNSS antenna provided by this utility model has an external dimension of 95mm*16mm, a height of 10mm for the first dielectric layer 20, and a height of 6mm for the second dielectric layer 30. To further reduce the overall height of the antenna, it can also be designed as a combination of 8mm and 4mm layers. The designed small integrated GNSS antenna operates in the L2 band of 1165–1300MHz and in the L1 band of 1525–1620MHz, covering the operating frequency bands of the four major navigation systems: BeiDou, GPS, GLONASS, and Galileo. Figure 5 The simulated passive gain curves for the L2 band of the small integrated GNSS antenna of this utility model are shown. The passive gain is 3.66 dBi at 1.165 GHz, 5.36 dBi at 1.227 GHz, and 2.77 dBi at 1.30 GHz. Figure 6 The simulated passive gain curves for the L1 band of the small integrated GNSS antenna of this utility model are shown. The passive gain is 4.64 dBi at 1.525 GHz, 5.77 dBi at 1.575 GHz, and 5.12 dBi at 1.62 GHz. Figure 7 The simulated passive gain curve of the WiFi / BT communication antenna of the small integrated GNSS antenna of this utility model shows that the WiFi / BT antenna 90 gain is higher than 0.3dBi in the 2.42-2.5GHz frequency band and higher than 3.5dBi in the 5.15-5.85GHz frequency band.

[0055] The WiFi / BT communication antenna integrated in this invention achieves 2.4GHz and 5GHz operating frequency bands for the WiFi antenna using only a simple dual-stub PIFA structure. The simple blade-shaped short-circuit stub design enables operation in the 5.15GHz-5.85GHz frequency band. Due to the relatively large distance between the connecting holes 41, a circular "ear" structure is used to house the connecting holes 41 and secure the antenna, enhancing its robustness, to avoid increased weight caused by an excessively large antenna size. To achieve antenna miniaturization, the most common method in existing technologies is to use short-circuit holes and high dielectric constants. However, if the number of short-circuit holes is too large and their diameter is the same as the feed hole size, drill bit breakage and pin embedding are likely to occur, affecting the metallization of the short-circuit holes, ultimately impacting the antenna's manufacturing quality and speed, and potentially reducing its gain performance. Due to size constraints, excessively large short-circuit hole diameters shorten the spacing between the short-circuit hole and the radiating patch and the communication antenna, thus affecting the performance of the short-circuit hole for the GNSS antenna. This invention employs a combination of high dielectric constant materials and arc-shaped and rectangular stub pairs to avoid processing quality problems and potential reductions in antenna gain performance caused by excessive use of short-circuit holes.

[0056] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0057] 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", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this application.

[0058] 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 one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0059] 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 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0060] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0062] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0063] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A small integrated GNSS antenna, characterized in that: It includes a first dielectric layer and a second dielectric layer, both made of materials with high dielectric constants; An antenna assembly is integrated on the side of the first dielectric layer, and an arc-shaped stub pair is provided on the surface of the first dielectric layer; a blade-shaped short-circuit stub is provided on the side of the first dielectric layer, and the blade-shaped short-circuit stub and the arc-shaped stub pair together realize the dual-band operation of the 2.4G and 5G frequency bands in the antenna assembly.

2. The miniature integrated GNSS antenna according to claim 1, characterized in that: The antenna assembly includes a 4G main antenna, a 4G secondary antenna, and a WiFi / BT antenna, and the lines connecting the 4G main antenna, the 4G secondary antenna, and the WiFi / BT antenna form an equilateral triangle.

3. The miniature integrated GNSS antenna according to claim 1, characterized in that: The upper surface of the first dielectric layer is provided with a first radiating patch for resonating low-frequency operating band, and the arc-shaped stub is disposed on the first radiating patch; the lower surface of the first dielectric layer is provided with a second radiating patch.

4. The miniature integrated GNSS antenna according to claim 3, characterized in that: The first radiating patch is provided with four first power feeding holes that are equally spaced along the axis of the first dielectric layer.

5. The miniature integrated GNSS antenna according to claim 3, characterized in that: The arc-shaped branch pair includes a plurality of first arc-shaped branches arranged at intervals, each of which is disposed on the surface of the first radiating patch.

6. The miniature integrated GNSS antenna according to claim 3, characterized in that: Multiple centrally symmetrical and equally spaced short-circuit holes are provided on the first dielectric layer. Each short-circuit hole is a metallized via for grounding the first radiating patch.

7. The miniature integrated GNSS antenna according to claim 3, characterized in that: Multiple fixing holes are formed on the first dielectric layer. Each fixing hole is a non-metallized via that is symmetrical about the center of the first dielectric layer and evenly distributed. The first radiating patch has an arc-shaped groove around each fixing hole to avoid the fixing hole.

8. The miniature integrated GNSS antenna according to claim 1, characterized in that: The second dielectric layer has a fixing portion that extends horizontally in a radial direction at its side end, for connecting the first dielectric layer and the second dielectric layer.

9. The miniature integrated GNSS antenna according to claim 1, characterized in that: The upper surface of the second dielectric layer is provided with a third radiating patch for resonant high-frequency operation, and the lower surface of the second dielectric layer is provided with a fourth radiating patch.

10. The miniature integrated GNSS antenna according to claim 9, characterized in that: The third radiating patch is provided with a plurality of second power feeding holes, each of which is a metallized via. The second power feeding holes are symmetrically distributed about the center of the second dielectric layer and are equally spaced to power the third radiating patch.

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