Glass antenna and vehicle

Abstract

The utility model relates to the technical field of vehicle-mounted antenna installation, in particular to a glass antenna and a vehicle, which comprise glass and an antenna arranged on the glass. The antenna comprises a receiving antenna and a transmitting antenna, and the projection area of the transmitting antenna vertically facing the glass is arranged around the projection area of the receiving antenna vertically facing the glass. According to the utility model, the influence on the short message antenna can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle antenna installation technical field especially relates to a glass antenna and vehicle. BACKGROUND

[0002] Short message communication service is mostly applied to emergency communication, emergency rescue, disaster prevention and mitigation. The short message communication antenna installation commonly seen on the car is that the antenna and various modules are integrated in a box and are magnetically attracted to the outside of the roof. However, due to the small space in the box, the short message antenna is easily affected by electromagnetic interference of other antennas and devices, and the body sheet metal also affects the radiation direction of the short message antenna. UTILITARY MODEL

[0003] The technical problem to be solved by the utility model is how to install the short message antenna and reduce the influence on the short message antenna.

[0004] In order to solve the above technical problem, the utility model adopts the technical scheme of a glass antenna comprising glass and an antenna arranged on the glass.

[0005] The antenna comprises a receiving antenna and a transmitting antenna, and the transmitting antenna is arranged around the projection area of the receiving antenna on the glass.

[0006] Further, the glass comprises at least one glass plate, and the receiving antenna and the transmitting antenna are arranged on the same surface of the glass plate.

[0007] Alternatively, the receiving antenna and the transmitting antenna are arranged on different surfaces of the glass plate.

[0008] Further, the glass is a laminated glass comprising a first glass plate and a second glass plate, the first glass plate has a first surface and a second surface arranged oppositely, the second glass plate has a third surface and a fourth surface arranged oppositely, and the second surface and the third surface are arranged oppositely. The receiving antenna is arranged on one of the first surface, the second surface, the third surface and the fourth surface, and the transmitting antenna is arranged on the same surface or different surface of the receiving antenna.

[0009] Further, a plurality of first feed points are arranged on the receiving antenna and are centrally symmetric with the center point of the receiving antenna, and a plurality of second feed points are arranged on the transmitting antenna and are centrally symmetric with the center point of the transmitting antenna.

[0010] Further, the receiving antenna is circular or regular polygonal, and the distance from the contour of the receiving antenna to the center point of the receiving antenna is one fifth to two sevenths of the medium wavelength of the receiving antenna.

[0011] And / or, the transmitting antenna is circular or a regular polygon, and the distance from the outline of the transmitting antenna to the center point of the transmitting antenna is one-fifth to two-sevenths of the wavelength of the transmitting antenna medium.

[0012] Furthermore, the receiving antenna and / or transmitting antenna have slits.

[0013] Furthermore, the polarization of the receiving antenna is right-hand circular polarization, and the polarization of the transmitting antenna is left-hand circular polarization.

[0014] Furthermore, the operating frequency band of the receiving antenna is 2483.5MHz to 2500MHz, and the operating frequency band of the transmitting antenna is 1610MHz to 1626.5MHz.

[0015] Furthermore, the antenna also includes a reflective component disposed on the inner side of the glass. The reflective component has a reflective cavity, and the projection area of ​​the reflective cavity on the glass covers the receiving antenna and the transmitting antenna.

[0016] Furthermore, the antenna also includes a power supply network module disposed within the reflective cavity.

[0017] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is: a vehicle, the vehicle including a window frame and a glass antenna as described in any one of the above solutions, the glass antenna being mounted on the window frame.

[0018] The beneficial effects of this invention are as follows: By placing the antenna on the glass, the influence of the vehicle body sheet metal on the antenna can be avoided. Furthermore, since the lower the operating frequency band on the same substrate, the larger the antenna size, and the operating frequency band of the transmitting antenna is lower than that of the receiving antenna, surrounding the projection area of ​​the transmitting antenna on the glass with the projection area of ​​the receiving antenna on the glass ensures the reliability of antenna communication. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the side cross-sectional structure of a glass antenna proposed in this utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the side cross-sectional structure of a glass antenna proposed in this utility model. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the side cross-sectional structure of a glass antenna proposed in this utility model. Figure 3 ;

[0022] Figure 4 This is a schematic diagram of the side cross-sectional structure of a glass antenna proposed in this utility model.Figure 4 ;

[0023] Figure 5 This invention provides a schematic cross-sectional view of the glass antenna, showing the receiving and transmitting antennas arranged on the glass from a frontal perspective. Figure 1 ;

[0024] Figure 6 This invention provides a schematic cross-sectional view of the glass antenna, showing the receiving and transmitting antennas arranged on the glass from a frontal perspective. Figure 2 ;

[0025] Figure 7 This invention provides a schematic cross-sectional view of the glass antenna, showing the receiving and transmitting antennas arranged on the glass from a frontal perspective. Figure 3 ;

[0026] Figure 8 A schematic cross-sectional view of the gap between the receiving and transmitting antennas of a glass antenna proposed in this utility model from a frontal perspective.

[0027] Figure 9 A schematic cross-sectional view of the gap between the receiving and transmitting antennas of a glass antenna proposed in this utility model from a frontal perspective (Figure 2).

[0028] Figure 10 The top gain diagram of the receiving antenna of the BeiDou-3 short message antenna;

[0029] Figure 11 The horizontal plane (H-plane) radiation pattern of the receiving antenna of the Beidou-3 short message antenna is shown as the average gain at theta = 20° and 60°.

[0030] Figure 12 This is a diagram showing the axial ratio of the receiving antenna for the BeiDou-3 short message antenna.

[0031] Figure 13 This is a 3D radiation pattern of the receiving antenna of the BeiDou-3 short message antenna.

[0032] Figure 14 This is a diagram showing the non-circularity of the receiving antenna of the BeiDou-3 short message antenna on the horizontal plane (H-plane) with theta=60°.

[0033] Figure 15 The top gain diagram of the transmitting antenna of the BeiDou-3 short message antenna;

[0034] Figure 16 The H-plane radiation pattern of the transmitting antenna of the Beidou-3 short message antenna is shown as the average gain at theta = 20° and 60°.

[0035] Figure 17This is a diagram showing the axial ratio of the transmitting antenna for the BeiDou-3 short message antenna.

[0036] Figure 18 This is a 3D radiation pattern of the transmitting antenna of the BeiDou-3 short message antenna.

[0037] Figure 19 This is a diagram showing the non-circularity of the transmitting antenna of the BeiDou-3 short message antenna on the horizontal plane (H-plane) with theta=60°.

[0038] Label Explanation:

[0039] 1. Glass; 2. Receiving antenna; 21. First feed point;

[0040] 3. Transmitting antenna; 31. Second feed point;

[0041] 4. Power supply network module;

[0042] 5. Reflective components;

[0043] 6. First side; 7. Second side; 8. Third side; 9. Fourth side; 10. Gap. Detailed Implementation

[0044] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0045] Please refer to Figures 1 to 7 As shown, the present invention provides a glass antenna, including a glass 1 and an antenna disposed on the glass 1; the antenna includes a receiving antenna 2 and a transmitting antenna 3, wherein the transmitting antenna 3 is arranged vertically toward the projection area on the glass 1 and surrounds the projection area of ​​the receiving antenna 2 vertically toward the projection area on the glass 1.

[0046] Working principle: Placing the antenna on the glass 1 avoids the influence of the vehicle body sheet metal on the antenna. Furthermore, since the lower the operating frequency on the same substrate, the larger the antenna size, and the operating frequency of the transmitting antenna 3 is lower than that of the receiving antenna 2, surrounding the projection area of ​​the transmitting antenna 3 on the glass 1 with the projection area of ​​the receiving antenna 2 on the glass 1 ensures the reliability of antenna communication.

[0047] In some embodiments, the glass includes at least one glass plate, with the receiving antenna 2 and the transmitting antenna 3 disposed on the same side of the glass plate; or, the receiving antenna 2 and the transmitting antenna 3 disposed on different sides of the glass plate.

[0048] Preferably, the antenna is positioned on the inner end of the glass 1 facing the vehicle interior, thereby avoiding the antenna being exposed outside the vehicle and ensuring the reliability of the antenna installation.

[0049] In some implementations, please refer to Figure 1As shown, glass 1 is laminated glass, comprising a first glass plate and a second glass plate. The first glass plate has a first surface 6 and a second surface 7 arranged opposite to each other, and the second glass plate has a third surface 8 and a fourth surface 9 arranged opposite to each other. The second surface 7 and the third surface 8 face each other. The receiving antenna 2 is disposed on the second surface 7 or the third surface 8 of glass 1, and the transmitting antenna 3 is disposed on the first surface 6 or the fourth surface 9 of glass 1. Disposing the receiving antenna 2 within the interlayer of glass 1 reduces the overall installation height of the antenna on glass 1. Preferably, the receiving antenna 2 can be printed with silver paste on the second surface 7 or the third surface 8, or it can be attached to the second surface 7 or the third surface 8 with a metal patch such as a copper foil patch. The transmitting antenna 3 can also be printed with silver paste on the first surface 6 or the fourth surface 9, or it can be attached to the first surface 6 or the fourth surface 9 with a metal patch such as a copper foil patch.

[0050] In some implementations, please refer to Figure 2 As shown, glass 1 is laminated glass. The receiving antenna 2 is disposed on the first surface 6 or the fourth surface 9 of glass 1, and the transmitting antenna 3 is disposed on the second surface 7 or the third surface 8 of glass 1. Disposing the transmitting antenna 3 within the interlayer of glass 1 reduces the overall installation height of the antenna on glass 1. Preferably, the transmitting antenna 3 can be printed with silver paste on the second surface 7 or the third surface 8, or it can be attached to the second surface 7 or the third surface 8 with a metal patch such as copper foil. Similarly, the receiving antenna 2 can be printed with silver paste on the first surface 6 or the fourth surface 9, or it can be attached to the first surface 6 or the fourth surface 9 with a metal patch such as copper foil.

[0051] In some implementations, please refer to Figure 3 As shown, glass 1 is laminated glass. The receiving antenna 2 is disposed on either the second surface 7 or the third surface 8 of glass 1, and the transmitting antenna 3 is disposed on either the second surface 7 or the third surface 8 of glass 1. By placing the receiving antenna 2 and the transmitting antenna 3 within the interlayer of glass 1, the overall installation height of the antennas on glass 1 can be reduced. Preferably, the receiving antenna 2 can be printed on the second surface 7 or the third surface 8 using silver paste, or it can be attached to the second surface 7 or the third surface 8 using a metal patch such as copper foil. Similarly, the transmitting antenna 3 can be printed on the second surface 7 or the third surface 8 using silver paste, or it can be attached to the second surface 7 or the third surface 8 using a metal patch such as copper foil.

[0052] In some implementations, please refer to Figure 4 As shown, the receiving antenna 2 is disposed on the first surface 6 or the fourth surface 9 of the glass 1, and the transmitting antenna 3 is disposed on the first surface 6 or the fourth surface 9 of the glass 1. Preferably, the receiving antenna 2 and the transmitting antenna 3 can be printed on the first surface 6 or the fourth surface 9 with silver paste, or they can be pasted on the first surface 6 or the fourth surface 9 with metal patches such as copper foil patches.

[0053] The preferred receiving antenna 2 is disposed on the second surface 7 of the glass 1, and the transmitting antenna 3 is disposed on the fourth surface 9 of the glass 1.

[0054] In some implementations, please refer to Figures 5 to 7 As shown, the receiving antenna 2 has multiple first feed points 21 that are centrally symmetrical about their own center points; the transmitting antenna 3 has multiple second feed points 31 that are centrally symmetrical about their own center points. The arrangement of the first feed points 21 and the second feed points 31 enables the circular polarization radiation performance of the receiving antenna 2 and the transmitting antenna 3.

[0055] Preferably, the number of the first feed point 21 and the second feed point 31 is two or four. When the number of feed points is two or four, the phase difference between the feed points is 90°±10°.

[0056] It should be noted that the number of feed points on receiving antenna 2 and transmitting antenna 3 can be the same or different. Specifically, when the number of feed points on receiving antenna 2 and transmitting antenna 3 is the same, the number of feed points is either two or four. When the number of feed points on receiving antenna 2 and transmitting antenna 3 is different, the number of first feed points 21 on receiving antenna 2 is two, and the number of second feed points 31 on transmitting antenna 3 is four; or the number of first feed points 21 on receiving antenna 2 is four, and the number of second feed points 31 on transmitting antenna 3 is two.

[0057] It is worth noting that the optimal number of first feed points 21 and second feed points 31 are both four, and the phase difference between the feed points is 90°.

[0058] In some implementations, please refer to Figures 5 to 7 As shown, the receiving antenna 2 is circular or a regular polygon, and the distance from the outline of the receiving antenna 2 to its center point is one-fifth to two-sevenths of the wavelength of the receiving antenna medium; and / or, the transmitting antenna 3 is circular or a regular polygon, and the distance from the outline of the transmitting antenna 3 to its center point is one-fifth to two-sevenths of the wavelength of the transmitting antenna medium. In one embodiment, the distance from the outline of the receiving antenna 2 to its center point is one-quarter of the wavelength of the receiving antenna medium, and the distance from the outline of the transmitting antenna 3 to its center point is one-quarter of the wavelength of the transmitting antenna medium.

[0059] In some implementations, please refer to Figure 8 and Figure 9As shown, a slot 10 is provided on the receiving antenna 2 and / or the transmitting antenna 3. The slot 10 can be formed by setting a notch at the edge of the antenna. The slot 10 is used to adjust the antenna, which can ensure that the length of the antenna edge and the center point are adapted to the frequency, thereby better realizing antenna miniaturization.

[0060] Specifically, the receiving antenna 2 and / or the transmitting antenna 3 are provided with one or more slots 10. When multiple slots 10 are provided, preferably, the slots 10 are centrally symmetrically distributed with respect to the center point of the antenna.

[0061] In some implementations, the receiving antenna 2 is polarized by right-hand circular polarization, and the transmitting antenna 3 is polarized by left-hand circular polarization. This allows the receiving antenna 2 and the transmitting antenna 3 to be matched with the satellite's transmission and reception capabilities.

[0062] In some implementations, please refer to Figures 1 to 7 As shown, the antenna also includes a reflective component 5, which is disposed on the inner side of the glass 1. The reflective component 5 has a reflective cavity, and the projection area of ​​the reflective cavity on the glass 1 covers the receiving antenna 2 and the transmitting antenna 3. In the vehicle, the radiation directions of the receiving antenna 2 and the transmitting antenna 3 are respectively towards the outside of the vehicle and towards the inside of the vehicle. Radiation towards the inside of the vehicle is ineffective; therefore, the reflective component 5 reflects the radiation towards the outside of the vehicle, and the reflected radiation can be superimposed with the original radiation towards the outside of the vehicle, thereby enhancing the communication performance of the antenna. Preferably, the reflective component 5 is made of metal; the reflective component 5 is bonded to the fourth surface 9 using an adhesive medium such as UV glue or 3M glue.

[0063] In some implementations, please refer to Figures 1 to 4 As shown, the antenna also includes a power supply network module 4, which is disposed inside the reflective cavity. The power supply network module 4 is a circuit board with a gap between it and the glass surface. The power supply network module can be attached to the inner wall of the reflective component 5 facing the glass or have a gap between it and the inner wall. The power supply network module 4 supplies power to the receiving antenna 2 and the transmitting antenna 3.

[0064] In some implementations, the antenna size is limited to less than or equal to 75mm × 75mm, which can hide the antenna in the black edge area of ​​the glass 1, thereby not affecting the light transmission performance of the transparent area of ​​the glass 1 and the strength of the glass itself, and can be kept away from the body sheet metal and active equipment, making it less susceptible to radio frequency interference.

[0065] A vehicle includes a window frame and the aforementioned glass antenna, the glass antenna being mounted on the window frame. The glass can be a windshield, rear windshield, sunroof, or side window. In one embodiment, the glass is a sunroof to improve the horizontal radiation gain of both the receiving and transmitting antennas.

[0066] Example 1

[0067] In conjunction with the aforementioned glass antenna, taking the BeiDou-3 short message antenna as an example, the operating frequency band of the receiving antenna 2 is set to 2483.5MHz to 2500MHz, and the operating frequency band of the transmitting antenna 3 is set to 1610MHz to 1626.5MHz.

[0068] like Figure 10 As shown, the vertex gain of the receiving antenna 2 of the Beidou-3 short message antenna is greater than 4.4 dBic, which meets the design requirement of the Beidou-3 short message antenna receiving frequency band being greater than 4.0 dBic.

[0069] like Figure 11 As shown, the average gain of the horizontal plane (H-plane) radiation pattern of the receiving antenna 2 of the Beidou-3 short message antenna at theta=20° is greater than 3.3dBic, satisfying the following... Figure 13 As shown, the average gain of the H-plane radiation pattern of the BeiDou-3 short message antenna receiving band is greater than 2 dBic at theta=20° and greater than -2.1 dBic at theta=60°, satisfying the requirement as follows. Figure 13 As shown, the average gain of the H-plane radiation pattern of the BeiDou-3 short message antenna receiving band at theta=60° is greater than the requirement of -2.5dBic.

[0070] like Figure 12 As shown, the axial ratio of the receiving antenna 2 of the Beidou-3 short message antenna is less than 0.2dB, which meets the requirement that the axial ratio of the receiving frequency band of the Beidou-3 short message antenna is less than 3dB.

[0071] like Figure 14 As shown, the non-circularity of the receiving antenna of the Beidou-3 short message antenna in the horizontal plane (H plane) at theta=60° is less than 2dB, which meets the design requirement of the receiving antenna 2 of the Beidou-3 short message antenna having a low elevation angle non-circularity of less than 3dB.

[0072] like Figure 15 As shown, the vertex gain of the transmitting antenna 3 of the Beidou-3 short message antenna is greater than 5.6 dBic, which meets the design requirement of a receiving frequency band greater than 4.0 dBic for the Beidou-3 short message antenna.

[0073] like Figure 16 As shown, the H-plane radiation pattern of the transmitting antenna 3 of the Beidou-3 short message antenna has an average gain greater than 4.5 dBic at theta = 20°, satisfying the following condition: Figure 18 As shown, the average gain of the H-plane radiation pattern of the BeiDou-3 short message antenna receiving band is greater than 2 dBic at theta=20° and greater than -0.3 dBic at theta=60°, satisfying the requirement as follows. Figure 18As shown, the average gain of the H-plane radiation pattern of the BeiDou-3 short message antenna receiving band at theta=60° is greater than the requirement of -1.0dBic.

[0074] like Figure 17 As shown, the axial ratio of the transmitting antenna 3 of the BeiDou-3 short message antenna is less than 0.2dB, which meets the requirement that the axial ratio of the receiving frequency band of the BeiDou-3 short message antenna is less than 3dB.

[0075] like Figure 19 As shown, the non-circularity of the transmitting antenna 3 of the Beidou-3 short message antenna in the horizontal plane (H plane) at theta=60° is less than 1dB, which meets the design requirement that the non-circularity of the transmitting antenna 3 of the Beidou-3 short message antenna at the low elevation angle is less than 3dB.

[0076] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A glass antenna, characterized in that: This includes the glass and the antenna mounted on the glass; The antenna includes a receiving antenna and a transmitting antenna, with the transmitting antenna positioned perpendicularly to the projection area on the glass surrounding the receiving antenna positioned perpendicularly to the projection area on the glass.

2. The glass antenna according to claim 1, characterized in that... The glass comprises at least one glass plate, and the receiving antenna and the transmitting antenna are disposed on the same side of the glass plate. Alternatively, the receiving antenna and the transmitting antenna may be disposed on different sides of the glass plate.

3. The glass antenna according to claim 2, characterized in that... The glass is laminated glass, which includes a first glass plate and a second glass plate. The first glass plate has a first side and a second side that are opposite to each other. The second glass plate has a third side and a fourth side that are opposite to each other. The second side and the third side are facing each other. The receiving antenna is disposed on one of the first side, the second side, the third side and the fourth side. The transmitting antenna is disposed on the same side or different sides of the receiving antenna.

4. The glass antenna according to claim 1, characterized in that... The receiving antenna has multiple first feed points that are centrally symmetrical about the center point of the receiving antenna, and the transmitting antenna has multiple second feed points that are centrally symmetrical about their own center point.

5. The glass antenna according to claim 4, characterized in that... The receiving antenna is circular or a regular polygon, and the distance from the outline of the receiving antenna to the center point of the receiving antenna is one-fifth to two-sevenths of the wavelength of the receiving antenna medium. And / or, the transmitting antenna is circular or a regular polygon, and the distance from the outline of the transmitting antenna to the center point of the transmitting antenna is one-fifth to two-sevenths of the wavelength of the transmitting antenna medium.

6. The glass antenna according to claim 1, characterized in that... The receiving antenna and / or transmitting antenna have slits.

7. The glass antenna according to claim 1, characterized in that... The receiving antenna is polarized by right-hand circular polarization, and the transmitting antenna is polarized by left-hand circular polarization.

8. The glass antenna according to claim 1, characterized in that... The operating frequency band of the receiving antenna is 2483.5MHz to 2500MHz, and the operating frequency band of the transmitting antenna is 1610MHz to 1626.5MHz.

9. The glass antenna according to claim 1, characterized in that... The antenna further includes a reflective component disposed on the inner side of the glass. The reflective component has a reflective cavity, and the projection area of ​​the reflective cavity on the glass covers the receiving antenna and the transmitting antenna.

10. The glass antenna according to claim 9, characterized in that... The antenna also includes a power supply network module, which is disposed within the reflector cavity.

11. A vehicle, characterized in that: The vehicle includes a window frame and a glass antenna as described in any one of claims 1-10, the glass antenna being mounted on the window frame.

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