Glass antenna and vehicle

Abstract

The utility model relates to a glass antenna and a vehicle. The glass antenna comprises a radiation main body and a glass carrier, the surface of the glass carrier comprises a film removal area not covered with the metal film layer and a non-film removal area covered with the metal film layer, and the radiation main body is arranged in the film removal area; the film removing area comprises at least one meandering gap extending towards the non-film-removing area, and the at least one meandering gap is used for counteracting induced currents collected in the gaps in the non-film-removing area. In the glass antenna, the meandering gap is used for counteracting the induced current gathered at each gap in the non-film-removing area, so that the interference on the radiation main body is reduced, and the omnidirectivity of the glass antenna is improved.

Description

Technical Field

[0001] This application relates to the technical field of antennas, and particularly to a glass antenna and a vehicle. Background Art

[0002] With the continuous development of communication technologies, the application scope of antennas has become increasingly wide.

[0003] Taking the antenna applied to a vehicle as an example, this antenna can enable communication between the vehicle and satellites, and thus is widely used in various application scenarios such as vehicle patrol, outdoor communication, emergency rescue, and the Internet of Things.

[0004] However, in related technologies, when the antenna is disposed on a vehicle, affected by various factors in the vehicle, the omnidirectionality of the antenna is poor. Summary of the Utility Model

[0005] Based on this, it is necessary to provide a glass antenna and a vehicle for the above-mentioned technical problems.

[0006] In a first aspect, this application provides a glass antenna, including:

[0007] A radiation main body and a glass carrier; the surface of the glass carrier includes a film-removing area where no metal film layer is covered and a non-film-removing area where a metal film layer is covered, and the radiation main body is disposed in the film-removing area;

[0008] The film-removing area includes at least one meandering slot extending towards the non-film-removing area, and the at least one meandering slot is used to cancel the induced current collected at each slot in the non-film-removing area.

[0009] In one embodiment, the film-removing area includes at least two meandering slots.

[0010] In one embodiment, the film-removing area is in a rounded rectangular shape, and one meandering slot is respectively disposed at the four rounded corners of the film-removing area.

[0011] In one embodiment, the length of each meandering slot is one quarter of the wavelength of the electromagnetic signal generated by the glass antenna.

[0012] In one embodiment, the radiation main body includes a radiation patch and at least one coupling stub; the at least one coupling stub is spaced apart from and surrounds the radiation patch.

[0013] In one embodiment, the radiation patch is circular, and each coupling stub is arc-shaped, or the radiation patch is polygonal, and each coupling stub is linear or zigzag.

[0014] In one embodiment, the glass antenna further includes a metal reflection cavity; the metal reflection cavity covers the film-removing area and houses the radiation main body in the cavity of the metal reflection cavity.

[0015] In one embodiment, the glass antenna further includes a feeding unit; the feeding unit is disposed on a side of the cavity of the metal reflection cavity away from the radiation body and is coupled to feed the radiation body.

[0016] In one embodiment, the feeding unit includes four feeding points, and the four feeding points are arranged in central symmetry.

[0017] In a second aspect, the present application provides a vehicle, including the glass antenna of any one of the foregoing.

[0018] In the above glass antenna and vehicle, the glass antenna includes: a radiation body and a glass carrier; the surface of the glass carrier includes a film-removing area where no metal film layer is covered and a non-film-removing area where a metal film layer is covered, and the radiation body is disposed in the film-removing area; the film-removing area includes at least one meandering slit extending toward the non-film-removing area, and the at least one meandering slit is used to cancel the induced current collected at each slit in the non-film-removing area. In the above glass antenna, the meandering slit is used to cancel the induced current collected at each slit in the non-film-removing area, thereby reducing the interference to the radiation body and improving the omnidirectionality of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application and should not be construed as any limitation to the present application. For those of ordinary skill in the art, other embodiments and the corresponding drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of a glass antenna in one embodiment;

[0021] Figure 2 It is a schematic structural diagram of a glass antenna in another embodiment;

[0022] Figure 3 It is a schematic structural diagram of a glass antenna in another embodiment;

[0023] Figure 4 It is a schematic structural diagram of a glass antenna in another embodiment;

[0024] Figure 5 It is a schematic structural diagram of a glass antenna in another embodiment;

[0025] Figure 6 It is a schematic side structural diagram of a glass antenna in one embodiment;

[0026] Figure 7It is the 2D radiation pattern of the antenna in the horizontal plane (H-plane) in an embodiment;

[0027] Figure 8 It is the 2D radiation pattern of the antenna in the horizontal plane (H-plane) in another embodiment;

[0028] Figure 9 It is the 2D radiation pattern of the antenna in the horizontal plane (H-plane) in another embodiment;

[0029] Figure 10 It is the 2D radiation pattern of the antenna in the horizontal plane (H-plane) in another embodiment;

[0030] Figure 11 It is the 2D radiation pattern of the antenna in the vertical plane (E-plane) in an embodiment;

[0031] Figure 12 It is the normal axial ratio diagram of the glass antenna in an embodiment.

[0032] Description of reference numerals:

[0033] 10 - Glass antenna;

[0034] 100 - Radiation main body;

[0035] 110 - Radiation patch;

[0036] 120 - Coupling stub;

[0037] 200 - Glass carrier;

[0038] 210 - Film removal area;

[0039] 211 - Meandering slot;

[0040] 220 - Non-film removal area;

[0041] 300 - Metal reflection cavity;

[0042] 400 - Feeding unit. Detailed implementation manners

[0043] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. Additionally, the connection can be for a fixing function or for a coupling or communication function.

[0045] It should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical or equivalent elements in the process, method, article or device comprising the said element. Additionally, terms such as "upper", "lower", "top", "bottom", etc. do not constitute an absolute spatial relationship limitation, but are only relative concepts.

[0046] With the continuous development of communication technology, the application scope of antennas is also becoming wider and wider.

[0047] Taking an antenna applied to a vehicle as an example, the antenna can enable communication between the vehicle and a satellite, and thus is widely applied to various application scenarios such as vehicle patrol, outdoor communication, emergency rescue, and the Internet of Things.

[0048] However, in the related art, when an antenna is disposed on a vehicle, affected by various factors in the vehicle, such as the vehicle body sheet metal and other metal structures inside the vehicle, the omnidirectionality of the antenna is poor, especially having a greater impact on the omnidirectional communication in the upper hemisphere range of the entire vehicle.

[0049] To improve the directivity of the antenna, the present application provides a glass antenna, as Figure 1 shown, the glass antenna 10 includes: a radiation main body 100 and a glass carrier 200.

[0050] Wherein, the surface of the glass carrier 200 includes a film-removing area 210 not covered with a metal film layer and a non-film-removing area 220 covered with a metal film layer, and the radiation main body 100 is disposed in the film-removing area 210.

[0051] The film-removing area 210 includes at least one meandering slit 211 extending towards the non-film-removing area 220, and the at least one meandering slit 211 is used to cancel the induced current converging at each slit in the non-film-removing area 220.

[0052] Optionally, the above glass antenna 10 can be applied to different terminal devices. Exemplarily, it can be applied to various electronic products, such as mobile phones, displays, etc., and can also be applied to vehicles, such as the window position of a vehicle.

[0053] Next, each component in the above glass antenna 10 will be introduced in detail:

[0054] The radiation body 100 is the main structure of the glass antenna 10, which is a transceiver integrated antenna for signal transceiver and interconnection communication with the outside world.

[0055] Among them, the radiation body 100 is made of a metal material. Exemplarily, the radiation body 100 can be made of silver, and can be specifically printed on the surface of the glass carrier 200 by means of silver paste sintering.

[0056] The glass carrier 200 is a bearing medium in the glass antenna 10 for bearing the radiation body 100.

[0057] Optionally, the glass carrier 200 can be a single-layer glass or a multi-layer glass, such as a double-layer laminated glass. The radiation body 100 is attached to the surface of the glass carrier 200.

[0058] As Figure 1 shown, the surface of the glass carrier 200 includes a film-removing area 210 without a metal film layer covered and a non-film-removing area 220 with a metal film layer covered. The film-removing area 210 includes a meandering slit 211 extending towards the non-film-removing area 220. Among them, the metal film layer is a protective layer of the glass carrier 200, which can be a metal layer or a metal oxide layer covering the surface of the glass carrier 200.

[0059] Exemplarily, a metal film layer is pre-set on the surface of the glass carrier 200, and part of the metal film layer is removed according to requirements, so as to form a film-removing area 210 without a metal film layer covered and a non-film-removing area 220 with a metal film layer covered on the surface of the glass carrier 200. Among them, the meandering slit 211 can be a rectangular slit as Figure 1 shown, or other shaped slits, such as triangular slits, rounded rectangular slits, etc. The shape of the film-removing area 210 can be circular, rectangular or other shapes. In this embodiment, the shape of the film-removing area 210 is not specifically limited, as long as it is sufficient to accommodate the radiation body 100.

[0060] When the radiation body 100 is disposed on the surface of the glass carrier 200, in order to avoid the interference of the metal layer on the surface of the glass carrier 200 to the radiation body 100, the radiation body 100 needs to be disposed in the film-removing area 210 of the glass carrier 200. In practical applications, even if the radiation body 100 is disposed in the film-removing area 210, when the feeder feeds power to the radiation body 100, the radiation body 100 will generate an electromagnetic field, while an induced current will be generated at the edge of the metal film layer in the non-film-removing area 220 under the action of the electromagnetic field generated by the radiation body 100, and a corresponding induced electromagnetic field will be formed. The induced electromagnetic field generated by the non-film-removing area 220 will be superimposed on the electromagnetic field generated by the radiation body 100 to form interference, thereby causing the pattern distortion of the glass antenna 10 (especially in the low elevation angle direction), generating a low elevation angle gain defect angle, and resulting in poor omnidirectionality of the antenna.

[0061] To improve the omnidirectionality of the antenna, it is necessary to reduce the interference of the metal film layer on the radiation body 100. The distance between the metal film layer and the radiation body 100 can be increased by increasing the area of the film-removing area 210, thereby reducing the interference of the metal film layer on the radiation body 100 and improving the omnidirectionality of the antenna. However, increasing the area of the film-removing area 210 will not only affect the overall appearance of the glass but also reduce the protection effect on the glass.

[0062] In the above glass antenna 10, the film-removing area 210 on the surface of the glass carrier 200 includes a meandering slit 211 extending to the non-film-removing area 220. The meandering slit 211 is used to change the flow direction of the induced current generated at this position at the edge of the non-film-removing area 210 to form induced currents flowing in opposite directions. When the area of the film-removing area 210 is small, such that the non-film-removing area 210 is close to the radiation body 100 and an induced current is generated at the edge, the meandering slit 211 can cause the induced current converging at this position to meander, and the meandering induced currents flowing in opposite directions will cancel each other out, thereby canceling / weakening the induced electromagnetic field generated at the edge of the non-film-removing area 210, reducing the interference to the radiation body 100, making the non-circularity of the antenna in the horizontal plane smaller, and correspondingly improving the omnidirectionality of the antenna. Therefore, the existence of the meandering slit 211 enables the omnidirectionality to be improved even when the area of the film-removing area 210 is small, and simultaneously improves the film-removing efficiency in the antenna manufacturing process.

[0063] When the above glass antenna 10 is applied to a vehicle, the glass antenna 10 can be disposed at the window position of the vehicle and used as the window glass. Among them, the glass carrier 200 of the glass antenna 10 includes a black edge area, and the radiation body 100 can be disposed in the film-removing area 210 located in the black edge area to hide the radiation body 100 without affecting the light transmission performance of the transparent area of the window glass and the strength of the window glass itself.

[0064] In related technologies, multiple antennas and various modules are usually integrated in a box, and the box is magnetically attracted to the outside of the vehicle roof. The space inside the box is narrow, and electromagnetic interference is likely to occur between the antennas and between the antennas and other devices. Moreover, the radiation pattern is greatly affected by the vehicle body sheet metal. The exposure of the device also affects the overall appearance of the vehicle. In addition, the transceiver separation design method in related technologies also results in a relatively high antenna profile and a large occupied space, correspondingly leading to layout difficulties. However, the radiation body 100 in the above glass antenna 10 is a transceiver integrated antenna, which has broadband characteristics and a low profile. And the radiation body 100 is arranged on the surface of the glass carrier 200, which can overcome the problem of insufficient layout space and affecting the overall appearance of the vehicle. At the same time, the radiation body 100 can be kept away from other active devices inside the vehicle and the vehicle body metal sheet metal, reducing their influence on the radiation body 100, thereby improving the omnidirectionality of the antenna. This glass antenna 10 makes the metal film layer that originally deteriorates the antenna performance become a part beneficial to the antenna. It can achieve omnidirectional communication in the upper hemisphere range of the whole vehicle with only one antenna, without signal blind spots, and is more suitable for the satellite communication service scenario of Tian Tong.

[0065] In the embodiment of the present application, the provided glass antenna includes: a radiation body and a glass carrier; the surface of the glass carrier includes a film removal area not covered with a metal film layer and a non-film removal area covered with a metal film layer, and the radiation body is arranged in the film removal area; the film removal area includes at least one meandering slit extending towards the non-film removal area, and the at least one meandering slit is used to cancel the induced current collected at each slit in the non-film removal area. In the above glass antenna, the meandering slit is used to cancel the induced current collected at each slit in the non-film removal area, thereby reducing the interference to the radiation body and improving the omnidirectionality of the antenna.

[0066] In order to improve the symmetry of the antenna radiation pattern, in one embodiment, the film removal area 210 includes at least two meandering slits 211.

[0067] Among them, the meandering slit 211 is used to cancel the induced current collected at each slit in the non-film removal area 220 to improve the gain defect angle corresponding to the azimuth of the slit in the antenna radiation pattern. The symmetrically arranged meandering slits 211 correspondingly improve the gain defect angles of the symmetric azimuths in the antenna radiation pattern, thereby improving the symmetry of the antenna radiation pattern.

[0068] Optionally, the at least two meandering slits 211 are symmetrically arranged.

[0069] The non-film removal area 220 on the surface of the glass carrier 200 surrounds the film removal area 210, and the radiation body 100 is arranged in the film removal area 210. The multiple meandering slits 211 extending from the film removal area 210 towards the non-film removal area 220 and symmetrically distributed can surround the radiation body 100, correspondingly improving the omnidirectionality of the antenna and enabling the glass antenna 10 to achieve 360° horizontal omnidirectional coverage.

[0070] In one embodiment, as Figure 1 shown, the film removal area 210 is in a rounded rectangular shape, and each of the four rounded corners is provided with a meandering slit 211.

[0071] In practical applications, the rectangular film removal area 210 will form a right-angle boundary in the non-film removal area 220, corresponding to forming a right angle. At the edge of the metal film layer corresponding to this right angle in the non-film removal area 220, the induced current will converge and concentrate, thereby generating an induced electromagnetic field that interferes with the radiation body 100.

[0072] The film removal area 210 in a rounded rectangular shape can correspondingly form a rounded metal film layer edge in the non-film removal area 220, which can relieve the convergence and concentration of the induced current at this place, so as to reduce the interference to the radiation body 100. The meandering slits 211 provided at the four rounded corners of the film removal area 210 enable the induced currents flowing in different directions formed by meandering at this position to cancel each other, further canceling / weakening the induced electromagnetic field generated at the edge of the non-film removal area 210, and improving the omnidirectionality of the antenna.

[0073] In one embodiment, the length of each meandering slit 211 is one-quarter of the wavelength of the electromagnetic signal generated by the glass antenna 10. Wherein, the length of the meandering slit 211 refers to the length of the central axis of the meandering slit 211. The meandering slit 211 with a quarter wavelength can form induced currents flowing in opposite directions by 180°, thereby increasing the degree of current cancellation, increasing the degree of cancellation / weakening of the induced electromagnetic field generated at the edge of the non-film removal area 210, and correspondingly increasing the omnidirectionality of the antenna in the horizontal direction.

[0074] Optionally, the length of the meandering slit 211 can also be (N + 1 / 4) wavelengths, where N is an integer.

[0075] In the embodiment of the present application, in the provided glass antenna, the film removal area includes at least two meandering slits, and at least two meandering slits are symmetrically arranged. Specifically, in the case where the film removal area is in a rounded rectangular shape, each of the four rounded corners of the film removal area is provided with a meandering slit. For the above glass antenna, the symmetrically arranged meandering slits can improve the symmetry of the antenna pattern, and the film removal area in a rounded rectangular shape, with each of the four rounded corners provided with a meandering slit, can improve the omnidirectionality of the antenna while improving the symmetry of the antenna pattern, so as to achieve 360° horizontal omnidirectional coverage.

[0076] The gain loss in the low elevation angle azimuth in the antenna pattern is usually caused by the surface wave formed by the radiation body 100 on the surface of the glass carrier 200. Based on this, in one embodiment, the radiation body 100 includes a radiation patch 110 and at least one coupling stub 120.

[0077] Among them, at least one coupling stub 120 is spaced from and surrounds the radiation patch 110.

[0078] The coupling stub 120 and the radiation patch 110 are coplanarly disposed on the surface of the glass carrier 200. When the feed source feeds power to the radiation patch 110, the coupling stub 120 that surrounds the radiation patch 110 and is spaced from the radiation patch 110 can be coupled with the radiation patch 110 to enhance the signal strength of the radiation patch 110 in the low elevation angle direction, improve the non-circularity, thereby compensating for the loss caused by the formation of surface waves, correspondingly improving the gain loss in the low elevation angle direction, and improving the omnidirectionality of the antenna.

[0079] Exemplarily, the radiation body 100 may include a plurality of strip-shaped coupling stubs 120, and the plurality of strip-shaped coupling stubs 120 jointly surround the radiation patch 110. As Figure 2 shown, the radiation body 100 may include four strip-shaped coupling stubs 120, jointly surrounding the radiation patch 110. As Figure 3 shown, the radiation body 100 may also include an annular coupling stub 120, directly surrounding the radiation patch 110.

[0080] In one embodiment, the diameter of the radiation patch 110 is one-half of the wavelength of the electromagnetic signal generated by the glass antenna 10, which can improve the impedance matching of the monopole antenna and improve the overall gain of the antenna. When the coupling stub 120 is annular, the central circumference of the coupling stub 120 is 2 times the wavelength of the electromagnetic signal generated by the glass antenna 10, so as to surround 360° around the radiation patch 110 and couple to enhance the signal strength of the radiation patch 110 in the low elevation angle direction and improve the non-circularity. Correspondingly, when the radiation body 100 includes four strip-shaped coupling stubs 120, the length of each coupling stub 120 is one-half of the wavelength of the electromagnetic signal generated by the glass antenna 10.

[0081] The shape of the coupling stub 120 is adapted to the shape of the radiation patch 110, which can improve the coupling effect between the coupling stub 120 and the radiation patch 110.

[0082] In one embodiment, the radiation patch 110 is circular, and each coupling stub 120 is arc-shaped.

[0083] Exemplarily, as Figure 2 shown, four arc-shaped coupling stubs 120 are arranged to surround the circular radiation patch 110. The arc-shaped coupling stubs 120 are adapted to the shape of the circular radiation patch 110, which can make the coupling stubs 120 extend along the edge of the radiation patch 110.

[0084] In one embodiment, the radiation patch 110 is polygonal, and each coupling stub 120 is linear or polygonal.

[0085] Optionally, the radiation patch 110 can be quadrilateral, such as rectangular, or hexagonal, octagonal or polygonal with more sides.

[0086] Exemplarily, as Figure 4 shown, four linear coupling stubs 120 are arranged around the rectangular radiation patch 110; as Figure 5 shown, four folded coupling stubs 120 are arranged around the octagonal radiation patch 110. The linear or folded coupling stubs 120 are adapted to the shape of the polygonal radiation patch 110, so that the coupling stubs 120 can extend along the edge of the radiation patch 110.

[0087] In the embodiment of the present application, in the provided glass antenna, the radiation body includes a radiation patch and at least one coupling stub, and the at least one coupling stub is spaced from and surrounds the radiation patch. In the above glass antenna, the coupling stub that surrounds the radiation patch and is spaced from the radiation patch can be coupled with the radiation patch to enhance the signal strength of the radiation patch in the low elevation angle direction, thereby compensating for the loss caused by the formation of surface waves, correspondingly improving the gain loss in the low elevation angle direction, and improving the omnidirectionality of the antenna.

[0088] In one embodiment, the glass antenna 10 further includes a metal reflection cavity 300.

[0089] Wherein, the metal reflection cavity 300 covers the film removal area 210 and houses the radiation body 100 in the cavity of the metal reflection cavity 300.

[0090] The radiation body 100 is arranged in the film removal area 210 of the glass carrier 200, and the metal reflection cavity 300 covers the film removal area 210 to be buckled on the surface of the glass carrier 200, so as to house the radiation body 100 in the film removal area 210 in the cavity of the metal reflection cavity 300.

[0091] The metal reflection cavity 300 can reflect the signal radiated inward outward to improve the directivity of the glass antenna 10, so that the glass antenna 10 has an omnidirectional radiation pattern in the upper hemisphere, and at the same time can block the interference of the external environment to the radiation patch 110, improving the anti-interference performance and stability of the glass antenna 10.

[0092] Exemplarily, as Figure 6 shown, the opening side of the metal reflection cavity 300 is closely attached to the surface of the glass carrier 200 to house the radiation body 100 arranged in the film removal area 210 of the glass carrier 200 in the cavity of the metal reflection cavity 300. Figure 6The glass carrier 200 therein is laminated glass. When applied to a vehicle, the laminated glass includes a first surface A close to the outside of the vehicle, a second surface B and a third surface C forming the laminate, and a fourth surface D close to the inside of the vehicle. The above-mentioned radiation body 100 is arranged on the fourth surface D of the laminated glass.

[0093] In the embodiment of the present application, the provided glass antenna further includes a metal reflection cavity. The metal reflection cavity covers the film-free area and houses the radiation body in the cavity of the metal reflection cavity. In the above glass antenna, the metal reflection cavity can not only reflect the inwardly radiated signal outward to improve the directivity of the glass antenna, but also block the interference of the external environment to the radiation body, thereby improving the anti-interference performance and stability of the glass antenna.

[0094] In one of the embodiments, as Figure 6 shown, the glass antenna 10 further includes a feeding unit 400.

[0095] Among them, the feeding unit 400 is arranged on the side of the cavity of the metal reflection cavity 300 far from the radiation body 100 and is coupled to feed the radiation body 100.

[0096] One end of the feeding unit 400 is connected to an external feed source to feed the radiation body 100. Among them, the feeding unit 400 is not in contact with the radiation body 100 and can be fed by a coupling method. The coupling feeding method does not require drilling holes in the glass carrier 200, so it will not affect the strength of the glass carrier 200 itself.

[0097] In one of the embodiments, the feeding unit 400 includes four feeding points, and the four feeding points are arranged in central symmetry, and the phases differ by 90° in sequence, so as to realize the left-handed circular polarization of the glass antenna 10.

[0098] The present application also provides a vehicle, including the glass antenna 10 in any of the foregoing embodiments.

[0099] When the glass antenna (with a size less than 65mm×65mm×10mm) is arranged on the film-free area in the middle of the surface of the laminated glass, the following simulation results are obtained:

[0100] Figure 7 is the 2D radiation pattern of the horizontal plane (H-plane) of the glass antenna without a metal film layer on the surface of the glass carrier. The non-circularity R (Roundness) of this antenna at θ = 60° and 70° is less than 3dB, meeting the design requirement of non-circularity < 3dB.

[0101] Figure 8The horizontal plane (H-plane) 2D radiation pattern of a glass antenna with a metal film layer on the surface of a glass carrier. The corresponding film-removed area is a circle with a diameter of 180 mm. The circularity R of the antenna at θ = 60° and 70° is less than 3 dB, meeting the design requirement of circularity < 3 dB.

[0102] Figure 9 The horizontal plane (H-plane) 2D radiation pattern of a glass antenna with a metal film layer on the surface of a glass carrier, but without meandering slots in the film-removed area. The corresponding film-removed area is a 100 mm × 100 mm square. The circularity R of the antenna at θ = 60° and 70° is greater than 3 dB, not meeting the design requirement of circularity < 3 dB.

[0103] Figure 10 The horizontal plane (H-plane) 2D radiation pattern of a glass antenna with a metal film layer on the surface of a glass carrier, and with meandering slots in the film-removed area. The corresponding film-removed area is a 100 mm × 100 mm square, with meandering slots at the four corners. The circularity R of the antenna at θ = 60° and 70° is less than 3 dB, meeting the design requirement of circularity < 3 dB. Among them, the peak gain of the antenna is greater than 4.5 dBi, and the gain at θ = ±60° is greater than -1 dBi.

[0104] Comparison Figure 7 and Figure 8 It can be seen that the presence of the metal film layer will reduce the circularity and omnidirectionality of the antenna; comparing Figure 8 and Figure 9 It can be seen that a larger film-removed area can improve the circularity and omnidirectionality of the antenna; comparing Figure 9 and Figure 10 It can be seen that a smaller film-removed area can improve the circularity and omnidirectionality of the antenna under the action of meandering slots, and achieve the same effect as a larger film-removed area.

[0105] Figure 11 For Figure 10 The vertical plane (E-plane) 2D radiation pattern of the corresponding glass antenna, which conforms to the E-plane balloon structure of an upper hemisphere omnidirectional radiation antenna, meeting the design requirement of upper hemisphere omnidirectional radiation.

[0106] Figure 12 For Figure 10 The normal axial ratio of the glass antenna set on a 300 mm × 300 mm laminated glass is less than 0.2 dB, meeting the design requirement of normal axial ratio less than 2 dB.

[0107] The above content is a further detailed description of the present application in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the present application is only limited to these descriptions. For those of ordinary skill in the technical field to which the present application pertains, without departing from the concept of the present application, several alternatives or modifications can be made to these described embodiments, and these alternative or modified forms should all be regarded as belonging to the protection scope of the present application. In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0108] The above-described embodiments merely represent several implementation manners of the present application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A glass antenna, characterized in that: The glass antenna (10) comprises: A radiation body (100) and a glass carrier (200); the surface of the glass carrier (200) comprises a film removal area (210) not covered with a metal film layer and a non-film removal area (220) covered with a metal film layer, and the radiation body (100) is arranged in the film removal area (210); The film removal area (210) comprises at least one meandering slit (211) extending towards the non-film removal area (220), and the at least one meandering slit (211) is used to offset the induced current collected at each slit in the non-film removal area (220).

2. The glass antenna according to claim 1, characterized in that: The film removal area (210) comprises at least two meandering gaps (211).

3. The glass antenna according to claim 1 or 2, characterized in that: The film removal area (210) is in the form of a rounded rectangle, and each of the four rounded corners of the film removal area (210) is provided with a meander gap (211).

4. The glass antenna according to claim 1 or 2, characterized in that: The length of each meander slot (211) is one quarter of the wavelength of the electromagnetic signal generated by the glass antenna (10).

5. The glass antenna according to claim 1 or 2, characterized in that: The radiation body (100) comprises a radiation patch (110) and at least one coupling branch (120); the at least one coupling branch (120) is spaced apart from the radiation patch (110) and is arranged around the radiation patch (110).

6. The glass antenna according to claim 5, characterized in that: The radiation patch (110) is circular, and each of the coupling branches (120) is in an arc shape; or, the radiation patch (110) is polygonal, and each of the coupling branches (120) is in a straight line shape or a broken line shape.

7. The glass antenna according to claim 1 or 2, characterized in that: The glass antenna (10) further comprises a metal reflection cavity (300); the metal reflection cavity (300) covers the film removal area (210), and the radiation body (100) is accommodated in the cavity of the metal reflection cavity (300).

8. The glass antenna according to claim 7, characterized in that: The glass antenna (10) further comprises a feeding unit (400); the feeding unit (400) is arranged in the metal reflection cavity (300) on a side away from the radiation body (100), and is coupled with the radiation body (100) for feeding.

9. The glass antenna according to claim 8, characterized in that: The feeding unit (400) comprises four feeding points, and the four feeding points are arranged in a centrally symmetrical manner.

10. A means of transport, characterized in that: The vehicle comprises the glass antenna (10) according to any one of claims 1 to 9.

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