Glass antenna, vehicle glass and vehicle

Abstract

The utility model provides a glass antenna, vehicle glass and a vehicle. The glass antenna comprises a glass body and an antenna radiator, the antenna radiator is arranged on the glass body and comprises a first radiation section, a second radiation section and a third radiation section which are sequentially connected in a bent mode, and the first radiation section and the third radiation section are located on the same side of the second radiation section and arranged at intervals. The end, away from the second radiation section, of the first radiation section forms a free end, the first radiation section is provided with a feeding point used for being electrically connected with a signal source, the third radiation section is provided with a grounding point used for being grounded, and the first radiation section, the second radiation section and the third radiation section define a first antenna slot on one side of the feeding point and the grounding point. The antenna radiator is used for generating a first resonant mode supporting a first frequency band under excitation of a signal source, and the first antenna slot is used for generating a second resonant mode supporting a second frequency band under excitation of the signal source. The glass antenna and the vehicle provided by the utility model have better communication performance.

Description

Technical Field

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

[0002] With the development of vehicle technology, the requirements for vehicle communication are getting higher and higher. Therefore, how to improve the communication performance of vehicles has become a technical problem to be solved. Utility Model Content

[0003] The present application provides a glass antenna, a vehicle glass and a vehicle with better communication performance.

[0004] On the one hand, the present application provides a glass antenna, including:

[0005] A glass body; and

[0006] An antenna radiator disposed on the glass body, the antenna radiator includes a first radiation segment, a second radiation segment and a third radiation segment which are bent and connected in sequence, the first radiation segment and the third radiation segment are located on the same side of the second radiation segment and are spaced apart, one end of the first radiation segment away from the second radiation segment forms a free end, a feeding point is provided on the first radiation segment, the feeding point is used for electrically connecting to a signal source, a grounding point is provided on the third radiation segment, the grounding point is used for grounding, the first radiation segment, the second radiation segment and the third radiation segment enclose a first antenna slot on one side of the feeding point and the grounding point, the antenna radiator is used to generate a first resonance mode supporting a first frequency band under the excitation of the signal source, and the first antenna slot is used to generate a second resonance mode supporting a second frequency band under the excitation of the signal source.

[0007] In a possible embodiment, the first radiation segment includes a first sub-radiation segment and a second sub-radiation segment which are bent and connected, one end of the first sub-radiation segment away from the second sub-radiation segment forms the free segment, one end of the second sub-radiation segment away from the first sub-radiation segment is connected to the second radiation segment, the feeding point is provided on the second sub-radiation segment, the first sub-radiation segment, the second sub-radiation segment and the third radiation segment form a second antenna slot on the side of the feeding point and the grounding point facing away from the second radiation segment, and the second antenna slot is used to generate a third resonance mode supporting the second frequency band under the excitation of the signal source.

[0008] In a possible embodiment, the extension length of the first antenna slot is 1 / 4 wavelength of the second frequency band, and the extension length of the second antenna slot is 1 / 4 wavelength of the second frequency band.

[0009] In a possible embodiment, the first antenna slot is L-shaped, and the second antenna slot is L-shaped.

[0010] In a possible embodiment, the first antenna slot is symmetric with the second antenna slot.

[0011] In a possible embodiment, the second frequency band is higher than the first frequency band.

[0012] In a possible embodiment, the first frequency band is in the medium-high frequency range, and the second frequency band is in the ultra-high frequency range.

[0013] In a possible embodiment, the orthographic projection of the feeding point on the plane where the grounding point is located coincides with the grounding point.

[0014] On the other hand, the present application also provides a vehicle glass including the glass antenna described above.

[0015] On yet another aspect, the present application also provides a vehicle including the vehicle glass described above.

[0016] The glass antenna provided by the present application includes a glass body and an antenna radiator. The antenna radiator is disposed on the glass body. Since the antenna radiator includes a first radiation section, a second radiation section, and a third radiation section that are sequentially bent and connected, the first radiation section and the third radiation section are located on the same side of the second radiation section and are spaced apart. One end of the first radiation section away from the second radiation section forms a free end. The first radiation section is provided with a feeding point for electrically connecting to a signal source. The third radiation section is provided with a grounding point for grounding. The antenna radiator is configured to generate a first resonance mode supporting the first frequency band under the excitation of the signal source, that is, the first radiation section, the second radiation section, and the third radiation section form an inverted F antenna. Through simulation verification, the bandwidth supported by the antenna radiator for the first frequency band is relatively wide and the efficiency is relatively high. In addition, since the first radiation section, the second radiation section, and the third radiation section enclose a first antenna slot on one side of the feeding point and the grounding point, the first antenna slot is configured to generate a second resonance mode supporting the second frequency band under the excitation of the signal source, that is, the first radiation section, the second radiation section, and the third radiation section also form a slot antenna. Through simulation verification, the bandwidth supported by the first antenna slot for the second frequency band is relatively wide and the efficiency is relatively high. Thus, by designing a combination of an inverted F antenna and a slot antenna, the bandwidth can be extended and the efficiency can be improved, so that the glass antenna has better communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below.

[0018] Figure 1 It is a schematic structural diagram of a vehicle provided by an embodiment of the present application;

[0019] Figure 2 It is a schematic side view of a glass antenna provided by an embodiment of the present application;

[0020] Figure 3 Another side schematic diagram of the glass antenna provided by the embodiment of the present application;

[0021] Figure 4 It is Figure 3 A schematic structural diagram of the antenna radiator in the shown glass antenna;

[0022] Figure 5 It is Figure 4 A schematic structural diagram of the antenna radiator shown further forming a second antenna slot;

[0023] Figure 6 It is Figure 5 An identification diagram of the size of the antenna radiator shown;

[0024] Figure 7 It is Figure 6 A standing wave ratio diagram of the antenna radiator shown;

[0025] Figure 8 It is Figure 6 An efficiency diagram of the antenna radiator shown when operating in the 5G band;

[0026] Figure 9 It is Figure 6 An efficiency diagram of the antenna radiator shown when operating in the WIFI band.

[0027] Explanation of reference numerals:

[0028] Vehicle 1000; Glass antenna 100; Glass body 10; Antenna radiator 20; Outer glass plate 101; First surface 110; Second surface 112; Inner glass plate 102; Third surface 120; Fourth surface 121; Bonding layer 103; First radiation section 201; Second radiation section 202; Third radiation section 203; Free end AA; Feeding point BB; Grounding point CC; First antenna slot 31; First sub-radiation section 210; Second sub-radiation section 211; Second antenna slot 32; First sub-antenna slot 310; Second sub-antenna slot 311; Third sub-antenna slot 320; Fourth sub-antenna slot 321. Detailed implementation manners

[0029] Next, the technical solutions provided by the present application will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments described in the present application without creative efforts belong to the protection scope of the present application.

[0030] References to "embodiments" in this application mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it an exclusive, independent, or alternative embodiment to other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described in this application can be combined with other embodiments.

[0031] The terms "first", "second", etc. in the specification and claims of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a component or device that includes one or more parts is not limited to the one or more parts listed, but optionally further includes one or more parts that are not listed but are inherent to the product exemplified, or one or more parts that it should have based on the described function. In addition, the terms "end" and "point" in the specification and claims of this application can indicate a small section of the antenna radiator relative to the entire antenna radiator, that is, "end" cannot be narrowly understood as the end, and "point" cannot be narrowly understood as a single point.

[0032] Please refer to Figures 1 to 4 , Figure 1 which is a schematic structural diagram of a vehicle 1000 provided by an embodiment of this application, Figure 2 which is a schematic side view of a glass antenna 100 provided by an embodiment of this application, Figure 3 which is another schematic side view of a glass antenna 100 provided by an embodiment of this application, Figure 4 is Figure 3 a schematic structural diagram of the antenna radiator 20 in the glass antenna 100 shown. The vehicle 1000 includes a signal source and vehicle glass. The vehicle glass includes the glass antenna 100. The signal source provides a radio frequency signal for the glass antenna 100, exciting the glass antenna 100 to operate in a corresponding resonance mode, thereby achieving communication. The signal source can be located inside the vehicle 1000. Of course, the vehicle 1000 can also include a body assembly. The body assembly can include a body body, body exterior parts, body interior parts, body electrical accessories, etc. The glass antenna 100 includes a glass body 10 and an antenna radiator 20.

[0033] The glass body 10 can be used as the front windshield, rear windshield, door glass, sunroof glass, triangular window glass, etc. of the vehicle 1000. The glass body 10 can be a single-layer glass, or a laminated glass, or a multi-layer glass, etc.

[0034] The antenna radiator 20 is a conductor with specific dimensions. The material of the antenna radiator 20 includes but is not limited to single metal or alloy. In a possible embodiment, the material of the antenna radiator 20 may be silver. The antenna radiator 20 is disposed on the glass body 10.

[0035] In a possible embodiment, as Figure 2 shown, the glass body 10 is a single-layer glass. The antenna radiator 20 may be disposed on the inner surface of the glass body 10, or the antenna radiator 20 may be disposed on the outer surface of the glass body 10. In the embodiment of the present application, the case where the antenna radiator 20 is disposed on the inner surface of the glass body 10 is taken as an example. Wherein, the outer surface of the glass body 10 faces the outside of the vehicle 1000, and the inner surface of the glass body 10 faces the inside of the vehicle 1000.

[0036] In another possible embodiment, as Figure 3As shown, the glass body 10 is a laminated glass. Specifically, the glass body 10 includes an outer glass sheet 101 and an inner glass sheet 102, which are stacked together. The outer glass sheet 101 includes a first surface 110 and a second surface 112, which are oppositely disposed. The inner glass sheet 102 includes a third surface 120 and a fourth surface 121, which are oppositely disposed. The first surface 110 of the outer glass sheet 101 faces the exterior of the vehicle 1000. The fourth surface 121 of the inner glass sheet 102 faces the interior of the vehicle 1000. The glass body 10 also includes an adhesive layer 103, which is disposed between the second surface 112 and the third surface 120 and is used to connect the outer glass sheet 101 and the inner glass sheet 102. The thickness of the outer glass sheet 101 and the thickness of the inner glass sheet 102 are not specifically limited in this application. For example, the thickness of the outer glass plate 101 can be between 1.8 mm and 2.5 mm, and the thickness of the inner glass plate 102 can be between 1.8 mm and 2.5 mm. The thickness of the outer glass plate 101 and the thickness of the inner glass plate 102 can be the same or different. The material of the adhesive layer 103 may include polyvinyl butyral (PVB) or ethylene-vinyl acetate copolymer (EVA). This application does not specifically limit the thickness of the adhesive layer 103. For example, the thickness of the adhesive layer 103 can be between 0.5 mm and 1.5 mm. Optionally, the antenna radiator 20 is disposed on the surface of the inner glass plate 102 facing away from the outer glass plate 101, that is, the antenna radiator 20 is disposed on the fourth surface 121. Alternatively, the antenna radiator 20 is disposed on the surface of the outer glass plate 101 facing away from the inner glass plate 102, that is, the antenna radiator 20 is disposed on the first surface 110. Alternatively, the antenna radiator 20 is disposed between the outer glass plate 101 and the inner glass plate 102, that is, the antenna radiator 20 is disposed on the second surface 112 or the third surface 120. In the embodiment of the present application, the antenna radiator 20 is disposed on the surface of the inner glass plate 102 facing away from the outer glass plate 101 as an example. Arranging the antenna radiator 20 on the surface of the inner glass plate 102 facing away from the outer glass plate 101, compared to an arrangement where the antenna radiator 20 is arranged on the surface of the outer glass plate 101 facing away from the inner glass plate 102, improves aesthetics, reduces environmental impact on the antenna radiator 20, and facilitates installation of the antenna radiator 20. Arranging the antenna radiator 20 on the surface of the inner glass plate 102 facing away from the outer glass plate 101, compared to an arrangement where the antenna radiator 20 is arranged between the outer glass plate 101 and the inner glass plate 102, facilitates electrical connection between the antenna radiator 20 and a signal source, thus facilitating power feeding of the antenna radiator 20. The antenna radiator 20 can be formed on the fourth surface 121 using a silver paste printing process.

[0037] like Figure 4As shown, the antenna radiator 20 includes a first radiation section 201, a second radiation section 202, and a third radiation section 203 that are sequentially bent and connected. The first radiation section 201 and the third radiation section 203 are located on the same side of the second radiation section 202 and are spaced apart. One end of the first radiation section 201 away from the second radiation section 202 forms a free end AA. The first radiation section 201 is provided with a feeding point BB, and the feeding point BB is used for electrically connecting to a signal source. The third radiation section 203 is provided with a grounding point CC, and the grounding point CC is used for grounding. The first radiation section 201, the second radiation section 202, and the third radiation section 203 enclose a first antenna slot 31 on one side of the feeding point BB and the grounding point CC. The antenna radiator 20 is configured to generate a first resonance mode supporting a first frequency band under the excitation of the signal source. The first antenna slot 31 is configured to generate a second resonance mode supporting a second frequency band under the excitation of the signal source.

[0038] This application does not specifically limit the bending angle between the first radiation section 201 and the second radiation section 202, nor the bending angle between the second radiation section 202 and the third radiation section 203. In a possible embodiment, the bending angle between the first radiation section 201 and the second radiation section 202 can be 90° or close to 90°; the bending angle between the second radiation section 202 and the third radiation section 203 can be 90° or close to 90°. The first radiation section 201 and the third radiation section 203 are disposed opposite to each other.

[0039] The free end AA can be understood as the end of the antenna radiator 20 that is not electrically connected to a conductive member or has a break gap between it and the conductive member. The feeding point BB can be understood as the position or port where the antenna radiator 20 receives an excitation signal. The grounding point CC can be understood as the position or port where the antenna radiator 20 is grounded. Among them, the feeding point BB is indirectly electrically connected to the signal source through an electrical connector. The grounding point CC is indirectly grounded through an electrical connector.

[0040] In a possible embodiment, the antenna radiator 20 can be fed and grounded through a coaxial cable. Specifically, the feeding point BB of the antenna radiator 20 is electrically connected to the inner core of the coaxial cable, and the grounding point CC of the antenna radiator 20 is electrically connected to the outer core of the coaxial cable. Optionally, the feeding point BB of the antenna radiator 20 is welded to the inner core of the coaxial cable, and the grounding point CC of the antenna radiator 20 is welded to the outer core of the coaxial cable, or the feeding point BB of the antenna radiator 20 is connected to the inner core of the coaxial cable through a conductive elastic sheet, and the grounding point CC of the antenna radiator 20 is connected to the outer core of the coaxial cable through a conductive elastic sheet.

[0041] The setting position of the feeding point BB in the length direction of the first radiation section 201 can be relatively close to the second radiation section 202, or relatively far from the second radiation section 202, or can be located at the midpoint of the first radiation section 201. The setting position of the grounding point CC in the length direction of the third radiation section 203 can be relatively close to the second radiation section 202, or relatively far from the second radiation section 202, or can be located at the midpoint of the third radiation section 203. In a possible embodiment, the grounding point CC is located at one end of the third radiation section 203 far from the second radiation section 202. Thus, it is beneficial to improve the utilization rate of the third radiation section 203 for supporting communication. The setting position of the feeding point BB in the width direction of the first radiation section 201 can be relatively close to the third radiation section 203, and the setting position of the grounding point CC in the width direction of the third radiation section 203 can be relatively close to the first radiation section 201. Thus, it is beneficial for the feeding point BB and the grounding point CC to be electrically connected to the inner core and the outer core of the coaxial cable respectively.

[0042] Based on the width variation of the first radiation section 201, the width variation of the second radiation section 202, and the width variation of the third radiation section 203, the first radiation section 201, the second radiation section 202, and the third radiation section 203 can form a first antenna slot 31 with a regular or irregular shape on one side of the feeding point BB and the grounding point CC. In a possible embodiment, the width of the first radiation section 201 can be uniform, the width of the second radiation section 202 can be uniform, and the width of the third radiation section 203 can be uniform. In this embodiment, the first radiation section 201, the second radiation section 202, and the third radiation section 203 can form a generally square first antenna slot 31 on one side of the feeding point BB and the grounding point CC. In another possible embodiment, one of the widths of the first radiation section 201, the second radiation section 202, and the third radiation section 203 can have a mutation, and the other two can be uniform. In this embodiment, the first radiation section 201, the second radiation section 202, and the third radiation section 203 can form a generally L-shaped first antenna slot 31 on one side of the feeding point BB and the grounding point CC. In a third possible embodiment, two of the widths of the first radiation section 201, the second radiation section 202, and the third radiation section 203 can have mutations, and the other one can be uniform. In this embodiment, the first radiation section 201, the second radiation section 202, and the third radiation section 203 can form a generally T-shaped first antenna slot 31 on one side of the feeding point BB and the grounding point CC. In a fourth possible embodiment, all three of the widths of the first radiation section 201, the second radiation section 202, and the third radiation section 203 can have mutations. In this embodiment, the first radiation section 201, the second radiation section 202, and the third radiation section 203 can form a generally cross-shaped first antenna slot 31 on one side of the feeding point BB and the grounding point CC. Of course, in other possible embodiments, the widths of the first radiation section 201, the second radiation section 202, and the third radiation section 203 can be gradually changed.

[0043] Wherein, the electrical length of the antenna radiator 20 between the feeding point BB and the free end AA can be approximately 1 / 4 wavelength of the first frequency band, or the electrical length of the antenna radiator 20 between the grounding point CC and the free end AA can be approximately 1 / 4 wavelength of the first frequency band. In the embodiment of the present application, taking the electrical length of the antenna radiator 20 between the feeding point BB and the free end AA being approximately 1 / 4 wavelength of the first frequency band as an example, at this time, the first resonance mode generated by the antenna radiator 20 under the excitation of the signal source mainly includes the first resonance current distributed on the antenna radiator 20 between the feeding point BB and the free end AA, and the first resonance current can refer to the appendix Figure 4As shown by the dashed line I1 in the figure. The extended length of the first antenna slot 31 can be approximately 1 / 4 wavelength of the second frequency band, or alternatively, the extended length of the first antenna slot 31 can be approximately 1 / 2 wavelength of the second frequency band. The second resonance mode generated by the antenna radiator 20 under the excitation of the signal source mainly includes the second resonance current distributed in the first antenna slot 31. The second resonance current can be referred to in the appendix Figure 4 As shown by the dashed line I2 in the figure.

[0044] The glass antenna 100 provided in this application includes a glass body 10 and an antenna radiator 20. The antenna radiator 20 is provided on the glass body 10. Since the antenna radiator 20 includes a first radiation section 201, a second radiation section 202, and a third radiation section 203 that are sequentially bent and connected, the first radiation section 201 and the third radiation section 203 are located on the same side of the second radiation section 202 and are spaced apart. One end of the first radiation section 201 away from the second radiation section 202 forms a free end AA. The first radiation section 201 is provided with a feeding point BB, and the feeding point BB is used to electrically connect to the signal source. The third radiation section 203 is provided with a grounding point CC, and the grounding point CC is used for grounding. The antenna radiator 20 is used to generate a first resonance mode that supports the first frequency band under the excitation of the signal source, that is, the first radiation section 201, the second radiation section 202, and the third radiation section 203 form an inverted F antenna. Through simulation verification, the antenna radiator 20 supports a relatively wide bandwidth and high efficiency in the first frequency band. In addition, since the first radiation section 201, the second radiation section 202, and the third radiation section 203 enclose and form a first antenna slot 31 on one side of the feeding point BB and the grounding point CC, the first antenna slot 31 is used to generate a second resonance mode that supports the second frequency band under the excitation of the signal source, that is, the first radiation section 201, the second radiation section 202, and the third radiation section 203 also form a slot antenna. Through simulation verification, the first antenna slot 31 supports a relatively wide bandwidth and high efficiency in the second frequency band. In this way, by designing a combination of an inverted F antenna and a slot antenna, the bandwidth can be expanded and the efficiency can be improved, so that the glass antenna 100 has better communication performance.

[0045] Furthermore, as Figure 5 shown, the first radiation section 201 includes a first sub-radiation section 210 and a second sub-radiation section 211 that are bent and connected. One end of the first sub-radiation section 210 away from the second sub-radiation section 211 forms the free end AA. One end of the second sub-radiation section 211 away from the first sub-radiation section 210 is connected to the second radiation section 202. The second sub-radiation section 211 is provided with the feeding point BB. The first sub-radiation section 210, the second sub-radiation section 211, and the third radiation section 203 form a second antenna slot 32 on the side of the feeding point BB and the grounding point CC away from the second radiation section 202. The second antenna slot 32 is used to generate a third resonance mode that supports the second frequency band under the excitation of the signal source.

[0046] This application does not specifically limit the bending angle between the first sub-radiating section 210 and the second sub-radiating section 211. In a possible embodiment, the bending angle between the first sub-radiating section 210 and the second sub-radiating section 211 can be 90° or close to 90°. In this embodiment, the first sub-radiating section 210 and the second radiating section 202 are oppositely arranged, and the second sub-radiating section 211 and the third radiating section 203 are oppositely arranged. A first antenna slot 31 and a second antenna slot 32 are formed by enclosing the first sub-radiating section 210, the second sub-radiating section 211, the second radiating section 202, and the third radiating section 203. The first antenna slot 31 and the second antenna slot 32 are located on opposite sides of the line connecting the feeding point BB and the grounding point CC.

[0047] Similarly, based on the width change of the first sub-radiating section 210, the width change of the second sub-radiating section 211, and the width change of the third radiating section 203, the first sub-radiating section 210, the second sub-radiating section 211, and the third radiating section 203 can form an irregular or regular second antenna slot 32 on the side of the feeding point BB and the grounding point CC away from the second radiating section 202. In a possible embodiment, the shape of the second antenna slot 32 can be substantially the same as the shape of the first antenna slot 31. This embodiment is beneficial to improving the pattern uniformity of the glass antenna 100 when supporting the second frequency band. Among them, one end of the first sub-radiating section 210 far from the second sub-radiating section 211 can be flush with the side of the third radiating section 203 away from the first radiating section 201.

[0048] Among them, the extension length of the second antenna slot 32 can be about 1 / 4 wavelength of the second frequency band, or the extension length of the second antenna slot 32 can be about 1 / 2 wavelength of the second frequency band. The third resonance mode generated by the antenna radiator 20 under the excitation of the signal source mainly includes the third resonance current distributed in the second antenna slot 32, and the third resonance current can be referred to the dotted line I3 in the appendix Figure 5 as shown.

[0049] In this embodiment, the first resonance mode is used to support the first frequency band, and the second resonance mode and the third resonance mode are both used to support the second frequency band. It can be understood that the inverted F-shaped antenna formed by the first radiating section 201, the second radiating section 202, and the third radiating section 203 is used to support the first frequency band, and the slot antenna formed by the first radiating section 201, the second radiating section 202, and the third radiating section 203 is used to support the second frequency band.

[0050] By forming a second antenna slot 32 on the side of the feeding point BB and the grounding point CC away from the second radiation segment 202 with the first sub-radiation segment 210, the second sub-radiation segment 211, and the third radiation segment 203, the second antenna slot 32 is used to generate a third resonance mode that supports the second frequency band under the excitation of a signal source. Through simulation verification, the bandwidth of the glass antenna 100 that supports the second frequency band can be further broadened, and the communication efficiency of the second frequency band can be improved.

[0051] In a possible embodiment, the extended length of the first antenna slot 31 is equivalent to 1 / 4 wavelength of the second frequency band, and the extended length of the second antenna slot 32 is equivalent to 1 / 4 wavelength of the second frequency band. In other words, the extended length of the first antenna slot 31 can be approximately 1 / 4 wavelength of the second frequency band, and the extended length of the second antenna slot 32 can be approximately 1 / 4 wavelength of the second frequency band. It can be understood that the second resonance mode generated by the first antenna slot 31 to support the second frequency band is a 1 / 4 wavelength resonance mode, that is, the second resonance current includes a current strong point and a current weak point, and the distribution of the second resonance current has a trend of changing from strong to weak. The third resonance mode generated by the second antenna slot 32 to support the second frequency band is a 1 / 4 wavelength resonance mode, that is, the third resonance current includes a current strong point and a current weak point, and the distribution of the third resonance current has a trend of changing from strong to weak. In this embodiment, the first antenna slot 31 and the second antenna slot 32 can form a 1 / 2 wavelength slot antenna.

[0052] By making the extended length of the first antenna slot 31 equivalent to 1 / 4 wavelength of the second frequency band and the extended length of the second antenna slot 32 equivalent to 1 / 4 wavelength of the second frequency band, the efficiency of the glass antenna 100 in supporting the second frequency band can be improved.

[0053] In a possible embodiment, please refer to Figure 5 and Figure 6 , the first antenna slot 31 is L-shaped, and the second antenna slot 32 is L-shaped. It can be understood that the first antenna slot 31 includes a first sub-antenna slot 310 and a second sub-antenna slot 311 that are bent and connected. The second antenna slot 32 includes a third sub-antenna slot 320 and a fourth sub-antenna slot 321 that are bent and connected.

[0054] Among them, the first sub-antenna slot 310 and the third sub-antenna slot 320 are located on opposite sides of the line connecting the feeding point BB and the grounding point CC. The extending direction of the second sub-antenna slot 311 is opposite to the extending direction of the fourth sub-antenna slot 321. The extended length of the first sub-antenna slot 310 can be less than the extended length of the second sub-antenna slot 311. The extended length of the first sub-antenna slot 310 can be referred to as shown by L10 in the appendix Figure 6 and the extended length of the second sub-antenna slot 311 can be referred to as shown by the appendix Figure 6As shown by L11 in the figure. In a possible embodiment, the extension length L10 of the first sub-antenna slot 310 may be 1.9 ± 0.1 mm, and the extension length L11 of the second sub-antenna slot 311 may be 3.5 ± 0.1 mm. The width of the first sub-antenna slot 310 may be less than the width of the second sub-antenna slot 311. The width of the first sub-antenna slot 310 may refer to the appendix Figure 6 As shown by L13 - L11 in the figure. The width of the second sub-antenna slot 311 may refer to the appendix Figure 6 As shown by L12 in the figure. In a possible embodiment, the size of L13 may be 5.5 ± 0.2 mm, and the width of the second sub-antenna slot 311 may be 3.8 ± 0.1 mm. The extension length of the third sub-antenna slot 320 may be less than the extension length of the fourth sub-antenna slot 321. The extension length of the third sub-antenna slot 320 may refer to the appendix Figure 6 As shown by L8 in the figure, and the extension length of the fourth sub-antenna slot 321 may refer to the appendix Figure 6 As shown by L7 in the figure. In a possible embodiment, the extension length L8 of the third sub-antenna slot 320 may be 2.1 ± 0.1 mm, and the extension length L7 of the fourth sub-antenna slot 321 may be 6.1 ± 0.2 mm. The width of the third sub-antenna slot 320 may be less than the width of the fourth sub-antenna slot 321. The width of the third sub-antenna slot 320 may be the same as the width of the first sub-antenna slot 310. The width of the fourth sub-antenna slot 321 may refer to the appendix Figure 6 As shown by L9 - L8 in the figure. In a possible embodiment, the size of L9 may be 5.6 ± 0.1 mm.

[0055] By making the first antenna slot 31 in an L shape and the second antenna slot 32 in an L shape, on the basis of making the extension length of the first antenna slot 31 equivalent to 1 / 4 wavelength of the second frequency band and the extension length of the second antenna slot 32 equivalent to 1 / 4 wavelength of the second frequency band, it is beneficial to reduce the overall width of the antenna radiator 20 and facilitate the miniaturization of the antenna radiator 20. At the same time, the shape of the first antenna slot 31 is the same as the shape of the second antenna slot 32, which is beneficial to improving the uniformity of the radiation pattern of the glass antenna 100 when supporting the second frequency band.

[0056] Optionally, the first antenna slot 31 and the second antenna slot 32 are symmetric. In the embodiment of the present application, the first antenna slot 31 and the second antenna slot 32 are symmetric about the midpoint of the line connecting the feeding point BB and the grounding point CC. It can be understood that the shape of the first antenna slot 31 is the same as the shape of the second antenna slot 32, and the size of the first antenna slot 31 is the same as the size of the second antenna slot 32.

[0057] By making the first antenna slot 31 symmetrical with the second antenna slot 32, it is beneficial to make the radiation pattern of the glass antenna 100 symmetrical in the second frequency band, which can improve the radiation efficiency of the glass antenna 100 in the second frequency band and reduce interference.

[0058] Optionally, the second frequency band is higher than the first frequency band. In a possible embodiment, the first frequency band is in the mid-high frequency range, and the second frequency band is in the ultra-high frequency range. Among them, the mid-high frequency is the frequency band of 1 GHz to 3 GHz. The ultra-high frequency is the frequency band greater than 3 GHz.

[0059] In a possible embodiment, the first frequency band is 1.71 GHz to 2.69 GHz. The second frequency band includes 3.3 GHz to 4.2 GHz and 4.4 GHz to 5 GHz. In this embodiment, the first resonance mode generated by the antenna radiator 20 under the excitation of the signal source can be used to realize the transmission of mid-high frequency cellular signals, and the second resonance mode generated by the first antenna slot 31 under the excitation of the signal source and the third resonance mode generated by the second antenna slot 32 under the excitation of the signal source can be used to realize the transmission of ultra-high frequency cellular signals.

[0060] In another possible embodiment, the first frequency band is 2.4 GHz to 2.5 GHz, and the second frequency band is 5.15 GHz to 5.85 GHz. In this embodiment, the first resonance mode generated by the antenna radiator 20 under the excitation of the signal source can be used to realize the transmission of mid-high frequency WIFI signals, and the second resonance mode generated by the first antenna slot 31 under the excitation of the signal source and the third resonance mode generated by the second antenna slot 32 under the excitation of the signal source can be used to realize the transmission of ultra-high frequency WIFI signals.

[0061] In a possible embodiment, the orthogonal projection of the feeding point BB on the plane where the grounding point CC is located coincides with the grounding point CC. It can be understood that the feeding point BB is directly opposite to the grounding point CC. By making the orthogonal projection of the feeding point BB on the plane where the grounding point CC is located coincide with the grounding point CC, it is beneficial to form a short-circuit structure combining an inverted F type and a slot antenna. At this time, the grounding point CC has a certain influence on the resonance frequency and bandwidth of the second resonance mode generated by the first antenna slot 31 and the resonance frequency and bandwidth of the third resonance mode generated by the second antenna slot 32, which is beneficial to realizing that the second resonance mode and the third resonance mode support ultra-high frequency, and is beneficial to reducing the energy leakage in the first antenna slot 31 and the second antenna slot 32 and avoiding efficiency reduction.

[0062] In a possible embodiment, Figure 6 The size of the antenna radiator 20 shown is as shown in Table 1 below.

[0063] Table 1

[0064] L1 L2 L3 L4 L5 L6 L7 L8 19.6±0.2 42.9±0.4 19.6±0.2 31.8±0.2 7.6±0.2 8.1±0.2 6.1±0.2 2.1±0.1 L9 L10 L11 L12 L13 L14 L15 5.6±0.1 1.9±0.1 3.5±0.1 3.8±0.1 5.5±0.2 5.7±0.2 6

[0065] Please refer to Figure 7 , through simulation verification, the glass antenna 100 can support communication in the frequency bands of 1.71 GHz to 2.69 GHz, 3.3 GHz to 4.2 GHz, 4.4 GHz to 5 GHz, and 5.15 GHz to 5.85 GHz, and the standing wave ratios in the frequency bands of 1.71 GHz to 2.69 GHz, 3.3 GHz to 4.2 GHz, 4.4 GHz to 5 GHz, and 5.15 GHz to 5.85 GHz are all less than or equal to 3. Among them, at 1.7 GHz, the standing wave ratio of the glass antenna 100 is approximately 1.69, at 2.69 GHz, the standing wave ratio of the glass antenna 100 is approximately 1.24, at 3.3 GHz, the standing wave ratio of the glass antenna 100 is approximately 1.83, at 4.2 GHz, the standing wave ratio of the glass antenna 100 is approximately 2.21, at 4.4 GHz, the standing wave ratio of the glass antenna 100 is approximately 1.71, and at 5 GHz, the standing wave ratio of the glass antenna 100 is approximately 2.04.

[0066] Please refer to Figure 8 and Table 2, through simulation verification, the glass antenna 100 can be used as a 5G antenna, and it has high efficiency in the frequency bands of 1.71 GHz to 2.69 GHz, 3.3 GHz to 4.2 GHz, and 4.4 GHz to 5 GHz. Among them, in the frequency band of 1.71 GHz to 2.69 GHz, the efficiency of the glass antenna 100 reaches 67%, in the frequency band of 3.3 GHz to 4.2 GHz, the efficiency of the glass antenna 100 reaches 64%, and in the frequency band of 4.4 GHz to 5 GHz, the efficiency of the glass antenna 100 reaches 65%.

[0067] Table 2

[0068] Frequency band Antenna efficiency (%) 1.71 GHz to 2.69 GHz 67 3.3 GHz to 4.2 GHz 64 4.4 GHz to 5 GHz 65

[0069] Please refer to Figure 9 and Table 3, through simulation verification, the glass antenna 100 can be used as a WIFI antenna, and it has high efficiency in the frequency bands of 2.4 GHz to 2.5 GHz and 5.15 GHz to 5.85 GHz. Among them, in the frequency band of 2.4 GHz to 2.5 GHz, the efficiency of the glass antenna 100 reaches 67%, and in the frequency band of 5.15 GHz to 5.85 GHz, the efficiency of the glass antenna 100 reaches 64%.

[0070] Table 3

[0071] Frequency band Antenna efficiency (%) 2.4 GHz to 2.5 GHz 67 5.15 GHz to 5.85 GHz 64

[0072] The features mentioned in the above description, claims and drawings, as long as they are meaningful within the scope of the present application, can be arbitrarily combined with each other. The advantages and features described for the glass antenna 100 are applicable to the vehicle 1000 in a corresponding manner.

[0073] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present application, and these improvements and refinements are also regarded as the protection scope of the present application.

Claims

1. A glass antenna, characterized in that, Comprising: A glass body; And An antenna radiator disposed on the glass body, the antenna radiator comprising a first radiation section, a second radiation section and a third radiation section which are sequentially bent and connected, the first radiation section and the third radiation section being located on the same side of the second radiation section and spaced apart, one end of the first radiation section remote from the second radiation section forming a free end, the first radiation section being provided with a feeding point for electrically connecting to a signal source, the third radiation section being provided with a grounding point for grounding, the first radiation section, the second radiation section and the third radiation section enclosing a first antenna slot on one side of the feeding point and the grounding point, the antenna radiator being configured to generate a first resonance mode supporting a first frequency band under the excitation of the signal source, and the first antenna slot being configured to generate a second resonance mode supporting a second frequency band under the excitation of the signal source.

2. The glass antenna according to claim 1, wherein, The first radiation section comprises a first sub-radiation section and a second sub-radiation section which are bent and connected, one end of the first sub-radiation section remote from the second sub-radiation section forming the free end, one end of the second sub-radiation section remote from the first sub-radiation section being connected to the second radiation section, the second sub-radiation section being provided with the feeding point, the first sub-radiation section, the second sub-radiation section and the third radiation section forming a second antenna slot on the side of the feeding point and the grounding point facing away from the second radiation section, the second antenna slot being configured to generate a third resonance mode supporting the second frequency band under the excitation of the signal source.

3. The glass antenna according to claim 2, characterized in that, The extended length of the first antenna slot is equivalent to 1 / 4 wavelength of the second frequency band, and the extended length of the second antenna slot is equivalent to 1 / 4 wavelength of the second frequency band.

4. The glass antenna according to claim 2, wherein The first antenna slot is L-shaped, and the second antenna slot is L-shaped.

5. The glass antenna according to claim 2, characterized in that, The first antenna slot is symmetrical with the second antenna slot.

6. The glass antenna according to any one of claims 1 to 5, characterized in that The second frequency band is higher than the first frequency band.

7. The glass antenna according to claim 6, wherein, The first frequency band is in the medium-high frequency range, and the second frequency band is in the ultra-high frequency range.

8. The glass antenna according to any one of claims 1 to 5, characterized in that, The orthogonal projection of the feeding point on the plane where the grounding point is located coincides with the grounding point.

9. A vehicle glass, characterized in that, Comprising the glass antenna according to any one of claims 1 to 8.

10. A vehicle, characterized in that, Comprising a signal source and the vehicle glass according to claim 9.

Images