Glass antenna
By employing a coupled feeding structure and coplanar waveguide feed line in the glass antenna, the problems of easy damage and difficult processing of glass antennas are solved, achieving glass protection and cost reduction, while improving the transmission efficiency of energy signals.
Patent Information
- Application Number
- CN202520339120.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Existing glass antenna structures are easily damaged and difficult to manufacture, increasing the cost of the antenna.
Energy signals are transmitted using a coupled feeding method. A first glass layer, a PVB dielectric layer, a second glass layer, and a PCB dielectric layer are stacked between glass layers. The main radiation structure and the coupled feeding structure are respectively set between different dielectric layers to avoid direct contact between the feeding connector and the glass. Energy signals are transmitted using coplanar waveguide feed lines and coupling patches.
It protects the glass from damage, reduces the manufacturing cost of the antenna, improves the ease of processing and installation, and enhances the transmission efficiency of energy signals.
Smart Images
Figure CN223978098U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of antenna technology, specifically providing a glass antenna. Background Technology
[0002] Currently, the space for electric vehicle antennas is limited, and they also face complex electromagnetic environments and the influence of wiring harnesses. Under these circumstances, the rational use of the limited space in electric vehicles becomes extremely important, and the solution of using glass antennas can effectively solve this problem.
[0003] However, the existing structure of glass antennas is prone to damaging the glass and is not conducive to antenna manufacturing, which increases the cost of antennas.
[0004] Accordingly, a new technical solution is needed in this field to solve the above-mentioned technical problems. Utility Model Content
[0005] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem that the glass of existing glass antennas is easily damaged.
[0006] This invention provides a glass antenna comprising a first glass layer, a first PVB dielectric layer, a second PVB dielectric layer, a second glass layer, and a PCB dielectric layer stacked sequentially. The glass antenna also includes a main radiating structure and a coupling feeding structure. The main radiating structure is disposed between the first PVB dielectric layer and the second PVB dielectric layer, and the coupling feeding structure is disposed between the second glass layer and the PCB dielectric layer. The coupling feeding structure is at least partially opposite to the main radiating structure, enabling the main radiating structure and the coupling feeding structure to transmit energy signals through coupling feeding.
[0007] In the preferred embodiment of the glass antenna described above, the main radiating structure includes a main radiating patch, a first coupling patch, a first coplanar waveguide feed line, and a first coplanar waveguide ground plane disposed on the first PVB dielectric layer or the second PVB dielectric layer. A first energy gathering region and a first feed line setting region are formed in the first coplanar waveguide ground plane. The first coupling patch is located in the first energy gathering region, and the first coplanar waveguide feed line is located in the first feed line setting region and connects the first coupling patch to the main radiating patch.
[0008] In the preferred embodiment of the glass antenna described above, the coupling feed structure includes a second coupling patch, a second coplanar waveguide feed line, and a second coplanar waveguide ground plane disposed on the PCB dielectric layer. A second energy gathering region and a second feed line setting region are formed in the second coplanar waveguide ground plane. The second coupling patch is located in the second energy gathering region, and the second coplanar waveguide feed line is located in the second feed line setting region and connects the second coupling patch to an external terminal. The center of the first energy gathering region coincides with the center of the second energy gathering region, so that the first coupling patch and the second coupling patch can couple and feed to transmit energy signals.
[0009] In the preferred embodiment of the glass antenna described above, the absolute value of the area difference between the first energy gathering region and the second energy gathering region is no greater than 10% of the smaller area of the first energy gathering region and the second energy gathering region.
[0010] In the preferred embodiment of the glass antenna described above, the first energy gathering region and the second energy gathering region have the same size, and their projections in the direction perpendicular to their large surfaces completely overlap.
[0011] In the preferred embodiment of the glass antenna described above, the center of the first coupling patch coincides with the center of the second coupling patch.
[0012] In the preferred embodiment of the glass antenna described above, the absolute value of the area difference between the first coupling patch and the second coupling patch is not greater than 10% of the smaller area of the first coupling patch and the second coupling patch.
[0013] In the preferred embodiment of the glass antenna described above, the first coupling patch and the second coupling patch have the same size and their projections in the direction perpendicular to their large surfaces completely overlap.
[0014] In the preferred embodiment of the glass antenna described above, the main radiating patch is shaped like a car logo and is located within the visible area of the first glass layer and the second glass layer, while the first coupling patch, the first coplanar waveguide feed line, and the first coplanar waveguide ground plane are located within the black border area of the first glass layer and the second glass layer.
[0015] In the preferred embodiment of the above-mentioned glass antenna, the dielectric constant of the first glass layer and the second glass layer is 6.8; and / or, the dielectric constant of the first PVB dielectric layer and the second PVB dielectric layer is 3; and / or, the dielectric constant of the PCB dielectric layer is 4.4.
[0016] With the above technical solution adopted, the glass antenna of this utility model includes a first glass layer, a first PVB dielectric layer, a main radiating structure, a second PVB dielectric layer, a second glass layer, a coupling feed structure, and a PCB dielectric layer stacked sequentially. The coupling feed structure is at least partially aligned with the main radiating structure, enabling the main radiating structure and the coupling feed structure to transmit energy signals through coupling feed. This arrangement avoids direct contact between the feed connector and the glass, as is common in existing technologies, thus preventing damage to the glass from contact and greatly protecting the glass. It also facilitates antenna processing and reduces manufacturing costs. Furthermore, the glass antenna of this utility model facilitates the installation and testing of vehicle antennas, making it more convenient for application.
[0017] Furthermore, the main radiating structure includes a main radiating patch, a first coupling patch, a first coplanar waveguide feed line, and a first coplanar waveguide ground plane. A first energy concentration area and a first feed line placement area are formed within the first coplanar waveguide ground plane. The first coupling patch is located within the first energy concentration area, and the first coplanar waveguide feed line is located within the first feed line placement area, connecting the first coupling patch to the main radiating patch. This arrangement allows the first coplanar waveguide ground plane to surround the first coupling patch, concentrating the energy signal within the first energy concentration area. This enables energy to be transmitted in a direction perpendicular to the first coplanar waveguide ground plane, rather than dispersing outwards. This facilitates coupling and feeding between the first coupling patch and the coupling feed structure, improving the efficiency of the coupling feed. Furthermore, its simple structure makes it easy to manufacture, assemble, and use.
[0018] Furthermore, the coupled feeding structure includes a second coupling patch, a second coplanar waveguide feed line, and a second coplanar waveguide ground plane. A second energy gathering area and a second feed line setting area are formed within the second coplanar waveguide ground plane. The second coupling patch is located within the second energy gathering area, and the second coplanar waveguide feed line is located within the second feed line setting area, connecting the second coupling patch to an external terminal. This allows energy signals to be transmitted between the second coupling patch and the external terminal. The center of the first energy gathering area coincides with the center of the second energy gathering area. With the second coplanar waveguide ground plane surrounding the second coupling patch, the energy signal is concentrated within the second energy gathering area, allowing energy to be transmitted in a direction perpendicular to the second coplanar waveguide ground plane, rather than dispersing in all directions. This enables the first coupling patch and the second coupling patch to couple and transmit energy signals more smoothly, improving the efficiency of the coupled feeding.
[0019] Furthermore, by making the first energy gathering region and the second energy gathering region the same size and their projections in the direction perpendicular to their large surfaces completely overlap, that is, by making the first energy gathering region and the second energy gathering region completely face each other, the energy transmission efficiency of the coupled power supply can be improved.
[0020] Furthermore, aligning the center of the first coupling patch with the center of the second coupling patch can effectively improve the efficiency of the coupling power supply.
[0021] Furthermore, making the first coupling patch and the second coupling patch the same size and having their projections completely overlap in the direction perpendicular to their large surfaces can improve the efficiency of coupling power supply.
[0022] Furthermore, the main radiating patch is shaped like a car logo and placed within the visible area of the first and second glass layers. This arrangement improves the vehicle's aesthetics and exposes the main radiating patch within the visible area. The first coupling patch, the first coplanar waveguide feed line, and the first waveguide ground plane are placed within the black border area (i.e., the invisible area), which effectively utilizes space and saves costs. Attached Figure Description
[0023] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:
[0024] Figure 1 This is an exploded structural diagram of the glass antenna of this utility model;
[0025] Figure 2 This is a three-dimensional structural diagram of the glass antenna of this utility model;
[0026] Figure 3 This is a top view of the glass antenna of this utility model;
[0027] Figure 4 yes Figure 3 A cross-sectional view along the AA direction;
[0028] Figure 5 This is a schematic diagram of the main radiating structure of this utility model;
[0029] Figure 6 This is a schematic diagram of the coupling power supply structure of this utility model;
[0030] Figure 7 This is a graph showing the bandwidth of the glass antenna of this invention as a function of frequency.
[0031] List of reference numerals in the attached diagram:
[0032] 1. First glass layer;
[0033] 2. First PVB dielectric layer;
[0034] 3. Main radiating structure; 31. Main radiating patch; 32. First coupling patch; 33. First coplanar waveguide feeder; 34. First coplanar waveguide ground plane; 341. First energy concentration area; 342. First feeder placement area;
[0035] 4. Second PVB dielectric layer;
[0036] 5. Second glass layer;
[0037] 6. Coupled feeding structure; 61. Second coupling patch; 62. Second coplanar waveguide feed line; 63. Second coplanar waveguide ground plane; 631. Second energy concentration area; 632. Second feed line setting area;
[0038] 7. PCB dielectric layer. Detailed Implementation
[0039] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.
[0040] It should be noted that in the description of this utility model, terms such as "upper," "lower," "inner," and "outer," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0041] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through other components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0042] Based on the problem of glass being easily damaged in existing glass antennas as pointed out in the background art.
[0043] This invention provides a glass antenna that transmits energy signals using a coupled feeding method. This avoids direct contact between the feed connector and the glass, which greatly protects the glass and prevents damage from the connector. It also facilitates antenna processing and reduces antenna manufacturing costs.
[0044] Specifically, please refer to Figures 1 to 6The glass antenna of this utility model includes a first glass layer 1, a first PVB dielectric layer 2, a main radiating structure 3, a second PVB dielectric layer 4, a second glass layer 5, a coupling feed structure 6, and a PCB dielectric layer 7, which are stacked sequentially. The main radiating structure 3 can be printed on the first PVB dielectric layer 2 or the second PVB dielectric layer 4 by laser processing or screen printing, and the coupling feed structure 6 can be printed on the PCB dielectric layer 7 by laser processing or screen printing.
[0045] The coupling feed structure 6 is arranged opposite to at least part of the main radiation structure 3 so that the main radiation structure 3 and the coupling feed structure 6 can transmit energy signals through coupling feed.
[0046] The glass antenna of this invention comprises a first glass layer 1, a first PVB dielectric layer 2, a main radiating structure 3, a second PVB dielectric layer 4, a second glass layer 5, a coupling feed structure 6, and a PCB dielectric layer 7, which are sequentially stacked. The coupling feed structure 6 is positioned at least partially opposite to the main radiating structure 3, enabling the main radiating structure 3 and the coupling feed structure 6 to transmit energy signals through coupling feed. This arrangement avoids direct contact between the feed connector and the glass, as is common in existing technologies, thus preventing damage to the glass and greatly protecting it. It also facilitates antenna fabrication and reduces manufacturing costs. Furthermore, the glass antenna of this invention facilitates the installation and testing of vehicle antennas, making it more convenient for application.
[0047] It should be noted that this application does not impose any restrictions on the specific structure of the coupling power supply structure 6 and the main radiation structure 3. As long as the coupling power supply structure 6 and the main radiation structure 3 can transmit energy signals through coupling power supply, thereby avoiding direct contact between the power supply wire and the glass and protecting the glass from damage, any adjustments or changes to the specific structure of the coupling power supply structure 6 and the main radiation structure 3 do not deviate from the basic principle of this utility model and should be limited to the protection scope of this utility model.
[0048] Preferably, please also refer to Figure 2 , Figure 3 and Figure 5 The main radiating structure 3 includes a main radiating patch 31, a first coupling patch 32, a first coplanar waveguide feed line 33, and a first coplanar waveguide ground plane 34 disposed on the first PVB dielectric layer 2 or the second PVB dielectric layer 4.
[0049] The first coplanar waveguide ground plane 34 has a first energy gathering region 341 and a first feeder setting region 342, which are connected. The first coupling patch 32 is located in the first energy gathering region 341, and the first coplanar waveguide feeder 33 is located in the first feeder setting region 342, connecting the first coupling patch 32 to the main radiating patch 31.
[0050] Preferably, the main radiating patch 31, the first coplanar waveguide feed line 33, and the first coupling patch 32 are integrated into a single structure.
[0051] This configuration allows the first coplanar waveguide ground plane 34 to surround the first coupling patch 32, thereby concentrating the energy signal within the first energy gathering area 341. This enables the energy signal to be transmitted in a direction perpendicular to the first coplanar waveguide ground plane 34, rather than spreading outwards. This facilitates coupling and feeding between the first coupling patch 32 and the coupling feeding structure 6, thereby enabling energy signal transmission, improving the efficiency of coupling and feeding, and its simple structure makes it easy to manufacture, assemble, and use.
[0052] Preferably, please also refer to Figure 2 , Figure 3 and Figure 6 The coupling feed structure 6 includes a second coupling patch 61, a second coplanar waveguide feed line 62, and a second coplanar waveguide ground plane 63 disposed on the PCB dielectric layer 7.
[0053] The second coplanar waveguide ground plane 63 forms a second energy gathering region 631 and a second feeder setting region 632. The second energy gathering region 631 is connected to the second feeder setting region 632. The second coupling patch 61 is located in the second energy gathering region 631. The second coplanar waveguide ground plane 63 completely encloses the second coupling patch 61, which can concentrate the radiated energy in the vertical direction (i.e., the direction perpendicular to the second coplanar waveguide ground plane 63) and prevent it from dissipating in all directions, thus effectively improving the efficiency of coupling and feeding.
[0054] The second coplanar waveguide feed line 62 is located within the second feed line setting area 632 and connects the second coupling patch 61 to the external terminal (specifically, the in-vehicle connection terminal) so as to transmit the energy signal between the second coupling patch 61 and the external terminal. The center of the first energy gathering area 341 coincides with the center of the second energy gathering area 631 so that the first coupling patch 32 and the second coupling patch 61 can be coupled and fed to transmit the energy signal.
[0055] It should be noted that this utility model does not impose any restrictions on the dimensions of the first energy gathering region 341 and the second energy gathering region 631, as long as the center of the first energy gathering region 341 coincides with the center of the second energy gathering region 631, thereby enabling the main radiating structure 3 and the coupled feeding structure 6 to achieve coupled feeding. In practical applications, those skilled in the art can set the dimensions of the first energy gathering region 341 and the second energy gathering region 631 according to actual needs. Adjustments and changes to the dimensions of the first energy gathering region 341 and the second energy gathering region 631 do not deviate from the basic principles of this utility model and should be limited to the protection scope of this utility model.
[0056] In some preferred embodiments, the absolute value of the area difference between the first energy gathering region 341 and the second energy gathering region 631 is no greater than 10% of the smaller area of the first energy gathering region 341 and the second energy gathering region 631.
[0057] The absolute value of the area difference between the first energy gathering region 341 and the second energy gathering region 631 is not greater than 10% of the smaller area of the first energy gathering region 341 and the second energy gathering region 631, thereby reducing the area difference between the first energy gathering region 341 and the second energy gathering region 631, so as to minimize energy loss and improve the efficiency of coupling power supply during coupling power supply.
[0058] In some further preferred embodiments, the first energy gathering region 341 and the second energy gathering region 631 are the same size, and their projections in the direction perpendicular to their large surfaces completely overlap (i.e., along the direction perpendicular to the large surface of the glass antenna, the projections of the first energy gathering region 341 and the second energy gathering region 631 completely overlap). This arrangement, where the first energy gathering region 341 and the second energy gathering region 631 are completely aligned, can improve the energy transmission efficiency of the coupled feed.
[0059] It should be noted that this utility model does not impose any restrictions on the relative positions of the first coupling patch 32 and the second coupling patch 61. In practical applications, it is sufficient as long as the first coupling patch 32 and the second coupling patch 61 can be coupled and fed. Any adjustments or changes to the relative positions of the first coupling patch 32 and the second coupling patch 61 do not deviate from the basic principles of this utility model and should be limited to the protection scope of this utility model.
[0060] In some preferred embodiments, the center of the first coupling patch 32 coincides with the center of the second coupling patch 61. This alignment of the centers of the first coupling patch 32 and the second coupling patch 61 effectively improves the efficiency of the coupling power supply.
[0061] In some preferred embodiments, the absolute value of the area difference between the first coupling patch 32 and the second coupling patch 61 is not greater than 10% of the smaller area of the first coupling patch 32 and the second coupling patch 61.
[0062] The absolute value of the area difference between the first coupling patch 32 and the second coupling patch 61 is not greater than 10% of the smaller area of the first coupling patch 32 and the second coupling patch 61, thereby reducing the area difference between the first coupling patch 32 and the second coupling patch 61, so as to minimize energy loss and improve the efficiency of coupling power supply during coupling power supply.
[0063] In some preferred embodiments, the first coupling patch 32 and the second coupling patch 61 are the same size, and their projections in the direction perpendicular to their large surfaces completely overlap (i.e., along the direction perpendicular to the large surface of the glass antenna, the projections of the first coupling patch 32 and the second coupling patch 61 completely overlap). This arrangement, where the first coupling patch 32 and the second coupling patch 61 are perfectly aligned, can further improve the efficiency of coupling and feeding.
[0064] In some preferred embodiments, the main radiating patch 31 is shaped like a car logo and positioned within the visible area of the first glass layer 1 and the second glass layer 5, making the radiating patch 31 exposed and visible, thus improving the vehicle's aesthetics. The first coupling patch 32, the first coplanar waveguide feed line 33, and the first coplanar waveguide ground plane 34 are located within the black border area (i.e., the non-visible area) of the first glass layer 1 and the second glass layer 5. Furthermore, this arrangement effectively utilizes space and saves costs.
[0065] In some preferred embodiments, the dielectric constant of the first glass layer 1 and the second glass layer 5 is 6.8.
[0066] In some preferred embodiments, the dielectric constant of the first PVB dielectric layer 2 and the second PVB dielectric layer 4 is 3.
[0067] In some preferred embodiments, the dielectric constant of the PCB dielectric layer 7 is 4.4.
[0068] In some preferred embodiments, the main radiating patch 31, the first coupling patch 32, and the second coupling patch 61 are metal patches, and the metal patches are made of any one of copper, silver, and aluminum.
[0069] The bandwidth of the glass antenna of this invention was tested, and the results were as follows: Figure 7 As shown in the graph, the working bandwidth of the glass antenna of this invention meets the WIFI frequency band of 2.4~2.5GHz+5.1~5.8GHz. Therefore, the glass antenna of this invention has a wide working bandwidth and can effectively protect the glass from damage, making it convenient to use.
[0070] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.
Claims
1. A glass antenna, characterized by, The glass antenna comprises a first glass layer (1), a first PVB medium layer (2), a second PVB medium layer (4), a second glass layer (5) and a PCB medium layer (7) arranged in sequence, The glass antenna further comprises a main radiation structure (3) and a coupling feeding structure (6), the main radiation structure (3) is arranged between the first PVB medium layer (2) and the second PVB medium layer (4), The coupling feeding structure (6) is arranged between the second glass layer (5) and the PCB medium layer (7), The coupling feeding structure (6) is arranged opposite to at least part of the main radiation structure (3) to enable the main radiation structure (3) and the coupling feeding structure (6) to transmit energy signals in the form of coupling feeding.
2. The glass antenna of claim 1, wherein, The main radiation structure (3) comprises a main radiation patch (31), a first coupling patch (32), a first coplanar waveguide feed line (33) and a first coplanar waveguide ground plane (34) arranged on the first PVB medium layer (2) or the second PVB medium layer (4), The first coplanar waveguide ground plane (34) is formed with a first energy accumulation area (341) and a first feed line arrangement area (342) in communication, The first coupling patch (32) is located in the first energy accumulation area (341), and the first coplanar waveguide feed line (33) is located in the first feed line arrangement area (342) and connects the first coupling patch (32) and the main radiation patch (31).
3. The glass antenna of claim 2, wherein, The coupling feeding structure (6) comprises a second coupling patch (61), a second coplanar waveguide feed line (62) and a second coplanar waveguide ground plane (63) arranged on the PCB medium layer (7), The second coplanar waveguide ground plane (63) is formed with a second energy accumulation area (631) and a second feed line arrangement area (632) in communication, The second coupling patch (61) is located in the second energy accumulation area (631), and the second coplanar waveguide feed line (62) is located in the second feed line arrangement area (632) and connects the second coupling patch (61) and an external terminal, The center of the first energy accumulation area (341) coincides with the center of the second energy accumulation area (631) to enable the first coupling patch (32) and the second coupling patch (61) to couple and feed to transmit energy signals.
4. The glass antenna of claim 3, wherein, The absolute value of the area difference between the first energy accumulation area (341) and the second energy accumulation area (631) is not greater than 10% of the smaller area of the first energy accumulation area (341) and the second energy accumulation area (631).
5. The glass antenna of claim 4, wherein, The first energy accumulation area (341) and the second energy accumulation area (631) are the same size and their projections in the direction perpendicular to their large faces completely coincide.
6. The glass antenna of claim 3, wherein, The center of the first coupling patch (32) coincides with the center of the second coupling patch (61).
7. The glass antenna of claim 6, wherein, The absolute value of the area difference between the first coupling patch (32) and the second coupling patch (61) is not greater than 10% of the smaller area of the first coupling patch (32) and the second coupling patch (61).
8. The glass antenna of claim 7, wherein, The first coupling patch (32) and the second coupling patch (61) are of the same size, and the projections in the direction perpendicular to the large faces thereof are completely coincident.
9. The glass antenna of claim 2, wherein, The main radiation patch (31) is arranged in the shape of a car logo and arranged in the visible area of the first glass layer (1) and the second glass layer (5), The first coupling patch (32), the first coplanar waveguide feed line (33) and the first coplanar waveguide ground plane (34) are arranged in the black border area of the first glass layer (1) and the second glass layer (5).
10. The glass antenna of any one of claims 1-9, wherein, The dielectric constant of the first glass layer (1) and the second glass layer (5) is 6.8; And / or, the dielectric constant of the first PVB medium layer (2) and the second PVB medium layer (4) is 3; And / or, the dielectric constant of the PCB medium layer (7) is 4.4.