CN111987425B - Antenna module, antenna glass and vehicle - Google Patents
Antenna module, antenna glass and vehicle Download PDFInfo
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- CN111987425B CN111987425B CN202010853539.7A CN202010853539A CN111987425B CN 111987425 B CN111987425 B CN 111987425B CN 202010853539 A CN202010853539 A CN 202010853539A CN 111987425 B CN111987425 B CN 111987425B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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Abstract
The application provides an antenna module, antenna glass and vehicle, the antenna module includes: the substrate comprises a first end face and a second end face which are arranged oppositely; the antenna comprises an antenna body, a feeding portion and a signal line connected between the antenna body and the feeding portion, the antenna body is arranged on a first end face, the feeding portion is arranged on a second end face, the signal line comprises a first lead portion and a second lead portion, the first lead portion is arranged on the first end face, the second lead portion is arranged on the second end face, the orthographic projection of the first lead portion on a substrate is separated from the orthographic projection of the second lead portion on the substrate, one end of the first lead portion is connected with the antenna body, one end of the second lead portion is connected with the feeding portion, and the other end of the first lead portion is directly or indirectly connected with the other end of the second lead portion. The antenna assembly provided by the application has high reliability of the signal line.
Description
Technical Field
The application relates to the technical field of communication, concretely relates to antenna module, antenna glass and vehicle.
Background
An Electronic Toll Collection (ETC) is one of the service functions of an intelligent transportation system, and is often applied to Toll points of highways and bridges. An antenna is installed on a windshield of a vehicle, and intelligent charging is realized through communication between the antenna and equipment of an ETC toll station, so that the reliability of the antenna is very important. However, in the related art, the ETC transaction is interrupted or failed by leading out the signal line of the antenna mounted on the windshield, which is easily damaged, causing the antenna to fail to receive data.
Disclosure of Invention
The application provides an antenna module, antenna glass and vehicle that signal line reliability is higher.
In one aspect, the present application provides an antenna assembly comprising:
the substrate comprises a first end face and a second end face which are arranged oppositely;
the antenna comprises an antenna body, a feed portion and a signal line connected between the antenna body and the feed portion, the antenna body is arranged on the first end face, the feed portion is arranged on the second end face, the signal line comprises a first lead portion and a second lead portion, the first lead portion is arranged on the first end face, the second lead portion is arranged on the second end face, the orthographic projection of the substrate and the orthographic projection of the second lead portion are separated from each other, one end of the first lead portion is connected with the antenna body, one end of the second lead portion is connected with the feed portion, and the other end of the first lead portion is directly or indirectly connected with the other end of the second lead portion.
In a possible embodiment, the signal line further includes a third lead portion, and opposite ends of the third lead portion are respectively connected to an end of the first lead portion away from the antenna main body and an end of the second lead portion away from the feeding portion.
In a possible implementation manner, the antenna further includes a dielectric substrate, the dielectric substrate includes a first bearing portion, a second bearing portion, and a third bearing portion, the first bearing portion is disposed on the first end surface, the first lead portion is disposed on the first bearing portion, the second bearing portion is disposed on the second end surface, the second lead portion is disposed on the second bearing portion, the third bearing portion is smoothly connected between the first bearing portion and the second bearing portion, and the third lead portion is disposed on the third bearing portion.
In one possible embodiment, the third receiving portion includes an inclined surface inclined with respect to the first end surface, the inclined surface faces the first end surface, and the third lead portion is disposed so as to be attached to the inclined surface.
In a possible embodiment, the substrate further includes a side surface connected between an edge of the first end surface and an edge of the second end surface, the side surface is surrounded to form a notch portion, and the third carrier portion and the third lead portion are accommodated in the notch portion.
In a possible implementation manner, the third lead portion includes a first sub-lead portion, a second sub-lead portion and a third sub-lead portion connected in sequence, one end of the first sub-lead portion away from the second sub-lead portion is connected to the first lead portion, one end of the third sub-lead portion away from the second sub-lead portion is connected to the second lead portion, the first sub-lead portion and the second sub-lead portion are in arc transition connection, and the third sub-lead portion and the second sub-lead portion are in arc transition connection.
In one possible embodiment, the dielectric substrate is a flexible substrate.
In a possible implementation manner, the antenna main body includes a first radiator and a second radiator, the first radiator is disposed on a side of the first carrying portion away from the first end surface, an end of the first lead portion away from the second lead portion is connected to the first radiator, the second radiator is disposed on a side of the first carrying portion toward the first end surface, and the first radiator is coupled to the second radiator.
In one possible embodiment, the antenna assembly further includes a ground plate disposed on the second carrier portion and the third carrier portion, the second lead portion and the third lead portion are insulated from the ground plate, and the second radiator is connected to the ground plate.
In a possible embodiment, one end of the feeding portion is disposed on a side of the second carrier portion facing the second end surface and connected to the second lead portion, and the other end of the feeding portion penetrates through the second carrier portion and is insulated from the second radiator.
On the other hand, the application also provides antenna glass, the antenna glass includes the antenna module, the substrate is first glass, the antenna glass still includes second glass, locate first glass with intermediate level and reflector between the second glass, the antenna presss from both sides locate first glass with between the second glass, the reflector is located the second terminal surface of substrate and the reflector is at least partly towards the antenna.
In still another aspect, the present application further provides a vehicle including the antenna glass.
The antenna main body and the feed portion are arranged on the first end face and the second end face, which are arranged on the opposite side of the substrate, respectively, the signal line is connected between the antenna main body and the feed portion, part of the signal line needs to be bent to the second end face through the first end face, the orthographic projection of the other end of the first lead portion on the second end face is arranged at an interval with the second lead portion, the other end of the first lead portion is directly or indirectly connected with the other end of the second lead portion, at least part of the other end of the first lead portion and the other end of the second lead portion is bent in an arc shape or an inclined shape, so that the vertical bending of the signal line is avoided, and the reliability of the signal line is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below.
Fig. 1 is a schematic cross-sectional view of an antenna glass provided in an embodiment of the present application;
fig. 2 is a schematic cross-sectional view of another antenna glass provided in the embodiments of the present application;
fig. 3 is a schematic diagram of an antenna assembly provided by embodiments of the present application from a first perspective;
fig. 4 is a schematic diagram of an antenna assembly provided by embodiments of the present application from a second perspective;
fig. 5 is a schematic structural diagram of another antenna assembly provided by an embodiment of the present application;
FIG. 6 is a schematic diagram of the antenna assembly of FIG. 5 from a first perspective;
FIG. 7 is a schematic diagram of the dielectric substrate and antenna of the antenna assembly of FIG. 5 from a second perspective;
FIG. 8 is an enlarged, fragmentary schematic view of the antenna assembly shown in FIG. 6;
FIG. 9 is a schematic view of the antenna assembly of FIG. 5 with a notch;
fig. 10 is a schematic diagram of the antenna assembly of fig. 5 with a ground plane.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
In the related art, the antenna is provided on an inner surface or an outer surface of a windshield of the vehicle, where the inner surface is a surface of the windshield facing the interior space of the vehicle compartment, and the outer surface is a surface of the windshield facing the external environment. When the antenna is provided on the inner surface of the windshield of the vehicle, the thickness of the windshield is large, and the signal loss of the antenna is large under the influence of the windshield. When the antenna is arranged on the outer surface of the windshield of the vehicle, the appearance of the vehicle is affected, the antenna is easily affected by the external environment, and the service life of the antenna is shortened.
As shown in fig. 1, fig. 1 is a schematic structural diagram of an antenna glass 100 according to an embodiment of the present application. The antenna glass 100 provided by the embodiment of the application can be applied to vehicles of full-automatic electronic toll collection systems, when the vehicles pass through a toll station, the antenna glass 100 can be in wireless communication with equipment of the toll station, and automatic and quick toll collection is realized.
As shown in fig. 1, an antenna glass 100 provided in the embodiment of the present application includes a first glass 2, a second glass 3, an interlayer 4, and an antenna 20. The first glass 2 is arranged opposite to the second glass 3. The first glass 2 comprises a first face 21 and a second face 22 which are arranged oppositely, the second glass 3 comprises a third face 31 and a fourth face 32 which are arranged oppositely, the second face 22 faces the interior of the vehicle, and the fourth face 32 faces the exterior of the vehicle. The intermediate layer 4 is located between the first face 21 and the third face 31, and the intermediate layer 4 is used for joining the first glass 2 and the second glass 3. Alternatively, the intermediate layer 4 may be an encapsulation film. The antenna 20 is provided between the first surface 21 and the third surface 31. By fixing the antenna 20 between the first glass 2 and the second glass 3 through the intermediate layer 4, compared with the way of arranging the antenna 20 on the first glass 2 or the second glass 3 by slotting, the process for synthesizing the first glass 2 and the second glass 3 is simplified, and bubbles are not easily generated in the process of synthesizing the first glass 2 and the second glass 3. In addition, the antenna 20 in the present application includes the dielectric substrate 202, and the dielectric substrate 202 is an ultra-thin flexible substrate, so that the problem of high glass damage probability in the process of laminating a hard plate can be well solved, and the antenna 20 and the vehicle glass can be integrated. The thickness of the antenna 20 can be reduced to 0.17mm, and may even be less than or equal to 0.1mm, by using an ultra-thin flexible substrate.
As shown in fig. 1, the antenna 20 radiates toward the outside of the vehicle, and in one embodiment, the antenna 20 is disposed adjacent to the third face 31. Specifically, the dielectric substrate 202 includes a first surface 221 and a second surface 222, the first surface 221 is disposed opposite to the second surface 222, the first surface 221 faces the third surface 31, the second surface 222 faces the first surface 21, and the antenna 20 is disposed on the first surface 221 of the dielectric substrate 202. In one embodiment, the antenna 20 may be disposed to conform to the third surface 31. The intermediate layer 4 is provided between the peripheral side of the dielectric substrate 202 and the first surface 21 of the first glass 2, the peripheral side of the dielectric substrate 202 and the third surface 31 of the second glass 3, and between the second surface 222 of the dielectric substrate 202 and the first surface 21 of the first glass 2. It is understood that the intermediate layer 4 surrounds the dielectric substrate 202, so that the dielectric substrate 202 and the antenna 20 are sandwiched between the first glass 2 and the second glass 3. Alternatively, the material of the intermediate layer 4 may be polyvinyl butyral (PVB), or the like. The dielectric substrate 202 may be made of an industrial Liquid Crystal Polymer (LCP), a Polyimide Film (PI), or the like. The working frequency of the LCP plate can reach hundreds of GHz, the dielectric constant of the LCP plate has good temperature stability and frequency stability, the loss tangent angle of the LCP plate at 10GHz can reach 0.0015, and the line loss of the antenna 20 can be greatly reduced. In addition, the LCP has a low water absorption ratio, and can prevent the antenna 20 from being worn due to moisture.
Further, as shown in fig. 2, the antenna glass 100 further includes a reflector 5. The reflector 5 is provided on the second surface 22 of the first glass 2. The reflector 5 includes a reflective surface 51, the reflective surface 51 of the reflector 5 is disposed to be attached to the second surface 22, and at least a portion of the reflective surface 51 is opposite to the antenna 20. In other words, the orthographic projection of the reflecting surface 51 on the first glass 2 at least partially coincides with the orthographic projection of the antenna 20 on the first glass 2. In one embodiment, the orthographic projection of the reflecting surface 51 on the first glass 2 covers the orthographic projection of the antenna 20 on the first glass 2. The reflecting surface 51 is used for reflecting the electromagnetic signal of the antenna 20 towards the outside of the vehicle, so that the electromagnetic signal of the antenna 20 is gathered on the side of the antenna 20 facing the second glass 3 after being reflected, and the receiving performance of the antenna 20 is further enhanced. The reflecting surface 51 may be a plane or an arc surface.
Referring to fig. 3 and fig. 4, fig. 3 is a schematic structural diagram of an antenna assembly 1 according to an embodiment of the present disclosure at a first viewing angle, and fig. 4 is a schematic structural diagram of an antenna assembly 1 according to an embodiment of the present disclosure at a second viewing angle. The antenna assembly 1 provided by the embodiment of the application comprises a substrate 10 and an antenna 20.
The substrate 10 may be the first glass 2. The substrate 10 includes a first end surface 101 and a second end surface 102 disposed opposite to each other, and a side surface 103 connected between the first end surface 101 and the second end surface 102. It is understood that the substrate 10 includes four side surfaces 103, and the embodiment of the present application is illustrated by taking only one side surface 103 as an example, and the description of the present application for the side surface 103 is applicable to the other side surfaces 103. For convenience of description, the length direction of the substrate 10 is defined as an X-axis direction, the width direction of the substrate 10 is defined as a Y-axis direction, and the thickness direction of the substrate 10 is defined as a Z-axis direction.
The antenna 20 includes an antenna main body 201, a dielectric substrate 202, a feeding portion 203, and a signal line 204, the antenna main body 201 is disposed on the first end surface 101 of the substrate 10 and is located on a first surface 221 of the dielectric substrate 202 facing away from the first end surface 101, the feeding portion 203 is disposed on the second end surface 102 of the substrate 10 and is located on the first surface 221 of the dielectric substrate 202 facing toward the second end surface 102, the signal line 204 is connected between the antenna main body 201 and the feeding portion 203, and the signal line 204 is bent to the second end surface 102 through the first end surface 101. Here, the antenna body 201 may be understood as a main first radiator of the antenna 20 for transmitting and receiving electromagnetic waves. The power feeding unit 203 is connected to a circuit board inside the vehicle through a power feeding line. Wherein the feeder may be a coaxial line, an overhead open line, a waveguide feeder, etc. The signal line 204 connects the power feeding unit 203 and the antenna main body 201, and transmits an antenna signal to the antenna main body 201.
Referring to fig. 5 to 7, the antenna main body 201 includes a first radiator 211 and a second radiator 212 disposed on the dielectric substrate 202. The first radiator 211, the signal line 204, and the power feeding unit 203 are disposed on the first surface 221 of the dielectric substrate 202, and the second radiator 212 is disposed on the second surface 222 of the dielectric substrate 202. The first radiator 211 may be a metal thin layer having a specific shape and formed on the substrate 10 through a photolithography process. The shape of the first radiator 211 may be changed as needed. The second radiator 212 is used for grounding, housing connection or connection to a conductor with a reference potential of zero. In one embodiment, the first radiator 211 and the second radiator 212 together form six antenna units 211a, and the six antenna units 211a are arranged opposite to each other in pairs to form an antenna array. The three pairs of antenna units 211a are sequentially arranged, the signal amplitude of one antenna unit 211a in the middle area of the three pairs of antenna units 211a is larger, and the signal amplitude of the two pairs of antenna units 211a on the two sides is weaker, so that the lobe width of the directional diagram is convenient to control, and the gain in the main radiation direction is improved. Each antenna element 211a comprises a first antenna arm provided at the first surface 221 and a second antenna arm provided at the second surface, the first antenna arm and the second antenna arm of each antenna element forming two pairs of dipoles. The first antenna arm comprises a pair of radiation sections which are mutually orthogonal at 45 degrees plus and 45 degrees minus, the second antenna arm comprises a pair of radiation sections which are mutually orthogonal at 45 degrees plus and 45 degrees minus, and each pair of radiation sections form a dual-polarized antenna at 45 degrees plus or minus so that the dual-polarized antenna can receive circularly polarized and linearly polarized signals. Further, the antenna 20 further includes a microstrip power dividing circuit and a 180 ° phase delay circuit disposed in the center of the antenna array, and the 180 ° phase delay circuit is configured to generate an additive directional pattern for the three pairs of antenna units 211 a. The second radiator 212 may be a whole metal thin layer, or may be designed in a patterned manner.
Specifically, referring to fig. 6 and 7, the signal line 204 is disposed on the first surface 221 of the dielectric substrate 202. In one embodiment, the signal line 204 includes a first lead portion 241 and a second lead portion 242 connected to each other. Specifically, one end of the first lead portion 241 is disposed on the first end surface 101 and connected to the first radiator 211, and one end of the first lead portion 241, which is far away from the first radiator 211, extends toward the edge of the first end surface 101 of the substrate 10. One end of the second lead portion 242 is disposed on the first end surface 102 and connected to the power feeding portion 203, and one end of the second lead portion 242 away from the power feeding portion 203 extends toward the edge of the second end surface 102 of the substrate 10. The orthographic projection of the first lead portion 241 on the second end face 102 is spaced from the orthographic projection of the second lead portion 242 on the second end face 102. One end of the first lead portion 241 at the edge of the first end surface 101 is directly connected to one end of the second lead portion 242 at the edge of the second end surface 102. The first lead portion 241 and the second lead portion 242 form an arc transition therebetween. It can be understood that when the interval between the orthographic projection of the first lead portion on the second end surface 102 and the orthographic projection of the second lead portion 242 on the second end surface 102 is small, the first lead portion 241 may be directly connected to the second lead portion 242, and a portion of the first lead portion 241 and/or a portion of the second lead portion 242 may be bent in an arc shape or an inclined shape.
The interval between the orthographic projection of the first lead portion 241 on the second end surface 102 and the orthographic projection of the second lead portion 242 on the second end surface 102 can be partial interval or complete interval. "partial spacing" may mean that the orthographic projection of the first lead part 241 covers part of the orthographic projection of the second lead part 242. In one embodiment, the dimension of the second lead portion 242 in the X-axis direction is greater than the dimension of the first lead portion 241 in the X-axis direction, and a portion of the second lead portion 242 is disposed opposite to a portion or all of the first lead portion 241, so that the first lead portion 241 partially overlaps the second lead portion 242 and the other portion is disposed at an interval. Of course, in other embodiments, the dimension of the second lead portion 242 along the X-axis direction may be smaller than or equal to the dimension of the first lead portion 241 along the X-axis direction, and in this case, a part of the second lead portion 242 is disposed opposite to a part of the first lead portion 241, so that the first lead portion 241 is partially overlapped with the second lead portion 242 and the other part is disposed at an interval.
It should be understood that, in the embodiment of the present application, the "orthographic projection of the first lead portion 241 is spaced from the orthographic projection of the second lead portion 242" only needs to ensure that one end of the first lead portion 241 located at the edge of the first end surface 101 is partially or completely spaced from one end of the second lead portion 242 located at the edge of the second end surface 102 along the X-axis direction. The first lead portion 241 may be provided at an interval in the X axis direction, and may partially or entirely overlap with one end of the radiator 211 connected to the second lead portion 242 and one end of the power feeding portion 203 connected to the second lead portion 242.
In another embodiment, the signal line 204 further includes a third lead portion 243. In order to reduce the line loss, the first lead portion 241, the second lead portion 242 and the third lead portion 243 are routed in the same line, so when the signal line 204 is bent to the second end surface 102 (see fig. 4) through the first end surface 101, it is necessary to prevent the signal line 204 from being stretched and broken due to the vertical bending of the signal line 204. The orthographic projection of the first lead portion 241 on the second end face 102 is spaced from the orthographic projection of the second lead portion 242 on the second end face 102. That is, the first lead portion 241 is spaced apart from the second lead portion 242 in the X-axis direction. The third lead portion 243 is located outside the substrate 10. The third lead portion 243 is connected between an end of the first lead portion 241 distant from the antenna main body 201 and an end of the second lead portion 242 distant from the feeding portion 203. It can be understood that the first lead portion 241 is spaced apart from the second lead portion 242 in the orthogonal projection of the second end surface 102, that is, the third lead portion 243 extends at least partially along the X-axis direction and the Z-axis direction so as to be bent to the second end surface 102 through the first end surface 101 and connected between the first lead portion 241 and the second lead portion 242. Of course, in other embodiments, the third lead portion 243 may be disposed to be attached to the side surface 103 of the substrate 10. Alternatively, the substrate 10 may be provided with a through hole communicating the first end surface 101 and the second end surface 102, and the third lead portion 243 may be provided in the through hole so as to be connected to the first lead portion 241 and the second lead portion 242 through openings at both ends of the through hole.
Optionally, referring to fig. 6 and fig. 7, one end of the feeding portion 203 is disposed on a side of the dielectric substrate 202 facing the substrate 10 and connected to the second lead portion 242, and the other end of the feeding portion 203 penetrates through the dielectric substrate 202 and extends to the second surface 222 of the dielectric substrate 202. The power feeding unit 203 is insulated from the second radiator 212, and the other end of the power feeding unit 203 is connected to a hardware circuit. It is understood that the dielectric substrate 202 is partially bent to the second end surface 102 side of the substrate 10, and the side of the dielectric substrate 202 away from the substrate 10 is closer to the interior of the vehicle than the substrate 10, so that when the feeding portion 203 penetrates through the dielectric substrate 202, the feeding portion 203 can be connected to the hardware circuit conveniently.
In the embodiment of the present application, the antenna main body 201 and the feeding portion 203 are respectively disposed on the first end surface 101 and the second end surface 102, which are opposite to each other, of the substrate 10, the signal line 204 is connected between the antenna main body 201 and the feeding portion 203, and a portion of the signal line 204 needs to be bent to the second end surface 102 through the first end surface 101, and by arranging the orthographic projection of the other end of the first lead portion 241 on the second end surface 102 at an interval with the second lead portion 242, and directly or indirectly connecting the other end of the first lead portion 241 with the other end of the second lead portion 242, at least a portion between the other end of the first lead portion 241 and the other end of the second lead portion 242 is bent in an arc shape or an inclined shape, so as to avoid vertical bending of the third lead portion 243, and improve reliability of the third lead portion 243.
In one embodiment, referring to fig. 6 and 7, the dielectric substrate 202 is made of a flexible material. The dielectric substrate 202 includes a first supporting portion 223, a second supporting portion 224, and a third supporting portion 225. The first bearing portion 223 is provided on the first end surface 101. The second receiving portion 224 is provided on the second end face 102 (see fig. 4). The third bearing portion 225 is smoothly connected between the first bearing portion 223 and the second bearing portion 224. The smooth connection of the third bearing portion 225 between the first bearing portion 223 and the second bearing portion 224 may mean that the smooth arc transition is formed between the third bearing portion 225 and the first bearing portion 223, and between the third bearing portion 225 and the second bearing portion 224. The first radiator 211 and the first lead portion 241 are disposed on a side of the first carrier portion 223 away from the first end surface 101. The second lead portion 242 is disposed on a side of the second carrier portion 224 facing the second end surface 102. The third carrier part 225 is connected between the first carrier part 223 and the second carrier part 224, and the third carrier part 225 supports the third lead part 243. It is understood that the signal traces 204 are all disposed on the dielectric substrate 202. The second radiator 212 is disposed on a side of the first carrier portion 223 facing the first end surface 101, a side of the third carrier portion 225 facing away from the third lead portion 243, and a side of the second carrier portion 224 facing away from the second end surface 102. It can be understood that the second radiator 212 covers at least a portion of the first carrier portion 223, the second carrier portion 224 and the third carrier portion 225.
In this embodiment, the dielectric substrate 202 is made of a flexible and ultrathin material, and the first radiator 211 and the second radiator 212 are disposed on two opposite sides of the dielectric substrate 202, wherein the first radiator 211 and the second radiator 212 are disposed on two sides of the flexible and ultrathin dielectric substrate 20, so that the antenna 20 can be integrated in glass. The first radiator 211 and the second radiator 212 together form a dipole antenna, so that the antenna 20 can have a symmetric radiation field, and the transceiving distance of the antenna 20 is increased.
Further, referring to fig. 6 and 8, the third bearing portion 225 includes an inclined surface 225a, and the inclined surface 225a faces the first end surface 101. In other words, the inclined surface 225a and the first end surface 101 are both oriented in the Z-axis positive direction. Wherein the Z-axis is perpendicular to the XY-plane. The third lead portion 243 is provided to be attached to the inclined surface 225 a. In this embodiment, the third lead portion 243 is supported on the inclined surface 225a when being bent in the X-axis direction and the Z-axis direction, so as to prevent the third lead portion 243 from moving in the Y-axis direction or the Z-axis direction.
In one embodiment, referring to fig. 6 and 8, the projection area of the inclined surface 225a on the XY plane is larger than the projection area of the third lead portion 243 on the XY plane. In other words, the projection of the third lead portion 243 on the inclined surface 225a falls entirely within the inclined surface 225 a. The third lead portion 243 includes a first sub-lead portion 243a, a second sub-lead portion 243b, and a third sub-lead portion 243c, which are connected in this order. The second sub-lead portion 243b faces the side surface 103 of the substrate 10 with a gap between the second sub-lead portion 243b and the substrate 10. The first sub-lead portion 243a is connected between the other end of the first lead portion 241 and the second sub-lead portion 243 b. The third sub-lead portion 243c is connected between the other end of the second lead portion 242 and the second sub-lead portion 243 b. The projection of the third lead portion 243 on the inclined surface 225a in the present embodiment falls entirely within the inclined surface 225a so that the third lead portion 243 is entirely supported on the inclined surface 225 a.
The first sub-lead portion 243a and the second sub-lead portion 243b are connected in an arc shape, and the third sub-lead portion 243c and the second sub-lead portion 243b are connected in an arc shape. By providing the arc-shaped connection between the first sub-lead portion 243a and the second sub-lead portion 243b, the first sub-lead portion 243a and the second sub-lead portion 243b may be prevented from being bent at right angles in the Y-axis direction. By providing the arc-shaped connection between the third sub-lead portion 243c and the second sub-lead portion 243b, the third sub-lead portion 243c and the second sub-lead portion 243b can be prevented from being bent at right angles in the Y-axis direction. The arc connection mode can reduce stress generated by bending in the first sub-lead portion 243a, the second sub-lead portion 243b, and the third sub-lead portion 243c, thereby improving reliability of the third sub-lead portion 243.
Referring to fig. 6 and 9, the cut-out portion 130 is formed around the side surface 103 of the substrate 10, and the third carrier portion 225 and the third lead portion 243 are accommodated in the cut-out portion 130. Specifically, the side surface 103 includes a first side portion 131, a second side portion 132, and a third side portion 133 connected in sequence. The first side portion 131 and the third side portion 133 are flush with each other along the X-axis direction, and the second side portion 132 is recessed from the first side portion 131 and the second side portion 132 along the Y-axis direction, so that the first side portion 131, the second side portion 132, and the third side portion 133 surround and form the notch portion 130. By forming the notch 130 around the side surface 103 of the substrate 10 and accommodating the third carrier portion 225 and the third lead portion 243 in the notch 130, the third carrier portion 225 and the third lead portion 243 can be prevented from protruding from the substrate 10, which causes a gap after the substrate 10 is connected to a vehicle body. It is understood that the notch portion 130 in the embodiment of the present application is located at the edge of the substrate 10, not a through hole or the like penetrating the substrate 10. In other words, the signal line 204 provided in the embodiment of the present application is bent through the outer side of the substrate 10, so that the hole formed on the substrate 10 can be prevented from affecting the strength of the substrate 10 in this embodiment.
Further, referring to fig. 6 and 10, the antenna assembly 1 further includes a ground plate 30 disposed on the dielectric substrate 202. The ground plate 30 is attached to the dielectric substrate 202. The ground plate 30 is spaced apart from the signal line 204 such that the ground plate 30 is disposed in insulation from the signal line 204. In one embodiment, the grounding plate 30 is located between the dielectric substrate 202 and the signal line 204 along the Z-axis direction, that is, the signal line 204, the grounding plate 30 and the dielectric substrate 202 are sequentially arranged along the Z-axis direction. The ground plate 30 is provided on the third carrier 225 and the second carrier 224, and the ground plate 30 is provided to be insulated from the third lead portion 243 and the second lead portion 242. The ground plate 30 is connected to the second radiator 212 at one end of the second carrier portion 224. The influence of external signals on the antenna 20 can be reduced by providing the ground plate 30, and the performance of the antenna 20 can be improved.
In another embodiment, the ground plate 30 includes a first sub-ground 301 and a second sub-ground 302 spaced apart from each other, and the first sub-ground 301, the signal line 204 and the second sub-ground 302 are coplanar. In other words, the first sub-ground 301, the signal line 204, and the second sub-ground 302 are located in the same XY plane. The signal line 204 is located between the first sub-ground portion 301 and the second sub-ground portion 302 and is spaced from both the first sub-ground portion 301 and the second sub-ground portion 302, so that the signal line 204 and the first sub-ground portion 301 and the signal line 204 and the second sub-ground portion 302 are insulated from each other. The first sub-ground portion 301 and the second sub-ground portion 302 are connected to the second radiator 212 through the conductive via 401, thereby implementing a coplanar waveguide.
The foregoing is a partial description of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations are also regarded as the protection scope of the present application.
Claims (12)
1. An antenna assembly, comprising:
the substrate comprises a first end face and a second end face which are arranged oppositely;
the antenna comprises an antenna main body, a feeding portion and a signal line connected between the antenna main body and the feeding portion, the antenna main body is arranged on the first end face, the feeding portion is arranged on the second end face, the signal line comprises a first lead portion and a second lead portion, the first lead portion is arranged on the first end face, the second lead portion is arranged on the second end face, the orthographic projection of the first lead portion on the substrate is separated from the orthographic projection of the second lead portion on the substrate, one end of the first lead portion is connected with the antenna main body, the other end, away from the antenna main body, of the first lead portion extends to the edge of the first end face, one end of the second lead portion is connected with the feeding portion, the other end, away from the feeding portion, of the second lead portion extends to the edge of the second end face, the other end of the first lead portion is directly or indirectly connected to the other end of the second lead portion.
2. The antenna assembly of claim 1, wherein the signal line further comprises a third lead portion, opposite ends of the third lead portion connecting an end of the first lead portion remote from the antenna body and an end of the second lead portion remote from the feeding portion, respectively.
3. The antenna assembly of claim 2, further comprising a dielectric substrate, wherein the dielectric substrate comprises a first supporting portion, a second supporting portion and a third supporting portion, the first supporting portion is disposed on the first end surface, the first lead portion is disposed on the first supporting portion, the second supporting portion is disposed on the second end surface, the second lead portion is disposed on the second supporting portion, the third supporting portion is smoothly connected between the first supporting portion and the second supporting portion, and the third lead portion is disposed on the third supporting portion.
4. The antenna assembly of claim 3, wherein the third carrier portion includes an inclined surface inclined with respect to the first end surface, the inclined surface facing the first end surface, the third lead portion being disposed in conformity with the inclined surface.
5. The antenna assembly according to claim 3, wherein the substrate further comprises a side surface connected between an edge of the first end surface and an edge of the second end surface, the side surface is surrounded to form a notch portion, and the third carrier portion and the third lead portion are accommodated in the notch portion.
6. The antenna assembly of claim 5, wherein the third lead portion comprises a first sub-lead portion, a second sub-lead portion and a third sub-lead portion connected in sequence, wherein an end of the first sub-lead portion away from the second sub-lead portion is connected with the first lead portion, an end of the third sub-lead portion away from the second sub-lead portion is connected with the second lead portion, the first sub-lead portion and the second sub-lead portion are connected in an arc transition manner, and the third sub-lead portion and the second sub-lead portion are connected in an arc transition manner.
7. The antenna assembly of any one of claims 3 to 6, wherein the dielectric substrate is a flexible substrate.
8. The antenna assembly of claim 3, wherein the antenna body comprises a first radiator and a second radiator, the first radiator is disposed on a side of the first carrying portion facing away from the first end surface, an end of the first lead portion facing away from the second lead portion is connected to the first radiator, the second radiator is disposed on a side of the first carrying portion facing toward the first end surface, and the first radiator is coupled to the second radiator.
9. The antenna assembly of claim 8, further comprising a ground plane disposed between the second carrier portion and the third carrier portion, the second lead portion and the third lead portion being insulated from the ground plane, the second radiator being connected to the ground plane.
10. The antenna assembly of claim 9, wherein one end of the feeding portion is disposed on a side of the second carrier portion facing the second end surface and connected to the second lead portion, and the other end of the feeding portion penetrates the second carrier portion and is insulated from the second radiator.
11. An antenna glass comprising the antenna assembly of any one of claims 1 to 10, wherein the substrate is a first glass, the antenna glass further comprising a second glass, an interlayer disposed between the first glass and the second glass, and a reflector, wherein the antenna is sandwiched between the first glass and the second glass, wherein the reflector is disposed on a second end face of the substrate and wherein the reflector is at least partially oriented toward the antenna.
12. A vehicle characterized in that it comprises an antenna glass according to claim 11.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010853539.7A CN111987425B (en) | 2020-08-21 | 2020-08-21 | Antenna module, antenna glass and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010853539.7A CN111987425B (en) | 2020-08-21 | 2020-08-21 | Antenna module, antenna glass and vehicle |
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| CN111987425B true CN111987425B (en) | 2021-12-21 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505312A (en) * | 2016-12-09 | 2017-03-15 | 安徽四创电子股份有限公司 | A kind of millimeter wave microstrip antenna array |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100838233B1 (en) * | 2006-07-04 | 2008-06-17 | 아마티스(주) | Film Antenna for Automobile |
| JPWO2016175314A1 (en) * | 2015-04-28 | 2018-04-26 | 日本板硝子株式会社 | Glass antenna |
| CN107359413B (en) * | 2017-05-24 | 2020-10-30 | 聊城信元通信科技有限公司 | Mobile communication terminal |
| CN108376828B (en) * | 2018-01-25 | 2021-01-12 | 瑞声科技（南京）有限公司 | Antenna system and mobile terminal |
| US10879585B2 (en) * | 2018-04-09 | 2020-12-29 | Lg Electronics Inc. | Mobile terminal |
| CN209626405U (en) * | 2018-10-26 | 2019-11-12 | Oppo广东移动通信有限公司 | Folding device and electronic equipment |
| CN109659681A (en) * | 2018-12-13 | 2019-04-19 | 厦门赢科光电有限公司 | A kind of antenna module and smart machine |
| CN209305305U (en) * | 2018-12-14 | 2019-08-27 | 福耀玻璃工业集团股份有限公司 | A kind of windshield with RFID label tag |
| CN111276788B (en) * | 2020-02-04 | 2022-01-25 | Oppo广东移动通信有限公司 | Dual-frequency millimeter wave antenna module and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106505312A (en) * | 2016-12-09 | 2017-03-15 | 安徽四创电子股份有限公司 | A kind of millimeter wave microstrip antenna array |
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