Window glass and vehicle

Abstract

The invention relates to vehicle window glass and a vehicle. The vehicle window glass comprises a vehicle window glass body, a demisting heating unit and an antenna assembly. And the demisting heating unit is provided with a plurality of conductive wires. The antenna assembly comprises a first antenna structure, a second antenna structure and a third antenna structure. The first antenna structure is used for radiating a signal of a first working frequency band. And at least one of the second antenna structure and the third antenna structure is also used for radiating a signal of a third working frequency band. And the second antenna structure is coupled with the first antenna structure, so that the second antenna structure can radiate a signal of a second working frequency band. And the third antenna structure is coupled with the conductive wire, so that the third antenna structure can radiate a signal of the second working frequency band. According to the vehicle window glass, large radiation gain and bandwidth of gain radiation signals can be achieved without increasing the number of antennas, the arrangement area of the antenna assembly is reduced, and work interference cannot be caused to the demisting heating unit.

Description

Technical Field

[0001] The present application relates to the technical field of glass antennas, and in particular to vehicle window glass and vehicles. Background Art

[0002] With the continuous development of intelligent vehicle technology, vehicle communication interaction function has become an important performance of vehicles. The vehicle communication interaction function mainly relies on the installation of wires on the vehicle. At present, the types of antennas commonly installed on vehicles include metal antennas, glass antennas, etc.

[0003] In the related art, the glass on the car window is provided with an antenna pattern and a defogger, the defogger is used to heat and defog the car window glass, and the antenna pattern is used to feed power to form a radiation signal. The antenna pattern in the related art mostly adopts a single branch setting mode, through the independent setting and independent feeding of single branches of different lengths, to achieve the emission of radiation signals in different working frequency bands.

[0004] However, the arrangement of multiple single branches in the related art has the following defects: although the arrangement of multiple single branches is more conducive to the antenna radiation gain, too many single branches are likely to increase the antenna installation area, affecting the light transmission performance of the window glass, and are likely to form a spatial obstruction with components such as defoggers, thereby increasing the risk of radiation performance being affected by components such as defoggers. Accordingly, reducing the number of single branches can reduce the antenna installation area, but is not conducive to increasing the antenna radiation gain, and it is difficult to meet the required radiation signal strength. Summary of the invention

[0005] Based on this, it is necessary to provide a vehicle window glass and a vehicle to solve the problem that too many single branches lead to too large an antenna setting area, while too few single branches lead to poor antenna performance.

[0006] In a first aspect, the present application provides a vehicle window glass, the vehicle window glass comprising:

[0007] Glass body;

[0008] a defogger heating unit, mounted on the vehicle window glass; the defogger heating unit is provided with a plurality of conductive wires; at least one of the second antenna structure and the third antenna structure is further used to radiate a signal of a third working frequency band;

[0009] An antenna assembly is mounted on the vehicle window glass; the antenna assembly comprises a first antenna structure, a second antenna structure and a third antenna structure; wherein the first antenna structure is used to radiate a signal of a first working frequency band;

[0010] The second antenna structure is coupled to the first antenna structure so that the second antenna structure can radiate signals in a second operating frequency band; the third antenna structure is coupled to the conductive wire so that the third antenna structure can radiate signals in the second operating frequency band;

[0011] The signal frequency of the first operating frequency band is less than the signal frequencies of the second operating frequency band and the third operating frequency band, and the signal frequency of the second operating frequency band is less than the signal frequency of the third operating frequency band.

[0012] In a second aspect, the present application provides a vehicle, including a vehicle body and the window glass in the above embodiment, and the window glass is installed on the vehicle body.

[0013] Through the arrangements of the first antenna structure, the second antenna structure and the third antenna structure, the antenna assembly of the above window glass and vehicle can form radiation signals in three operating frequency bands, which can cover the communication frequency bands of most current communication devices. Further, at least one of the second antenna structure and the third antenna structure can radiate signals in two operating frequency bands, so that the second antenna structure and the third antenna structure can be optimized to form a composite antenna, thereby increasing at least the radiation gain of the second operating frequency band, while not increasing the number of single stub settings, thus reducing the influence on the use of the glass body caused by excessive number of single stub settings, and reducing the risk of interference between the single stub and the defogging and heating unit due to excessive number of single stub settings. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the window glass in an embodiment.

[0015] Figure 2 It is a schematic structural diagram of the first antenna structure and the fourth antenna structure in an embodiment.

[0016] Figure 3 For Figure 2 It is a schematic structural diagram of the first antenna structure in an embodiment of

[0017] Figure 4 It is a schematic structural diagram of the second antenna structure and the third antenna structure in an embodiment.

[0018] Figure 5 For Figure 4 It is a schematic diagram of the third antenna structure in an embodiment of

[0019] Figure 6 For Figure 4 It is a schematic structural diagram of the third antenna structure in another embodiment of

[0020] Figure 7Schematic diagram of the fourth antenna structure in an embodiment.

[0021] Figure 8 Curve relationship diagram formed by signal analysis in the horizontal direction of the FM band in an experimental scenario.

[0022] Figure 9 Curve relationship diagram formed by signal analysis in the vertical direction of the FM band in an experimental scenario.

[0023] Figure 10 Curve relationship diagram formed by signal analysis in the horizontal direction of the DAB band in an experimental scenario.

[0024] Figure 11 Curve relationship diagram formed by signal analysis in the vertical direction of the DAB band in an experimental scenario.

[0025] Figure 12 Curve relationship diagram formed by signal analysis in the horizontal direction of the TV band in an experimental scenario.

[0026] Figure 13 Curve relationship diagram formed by signal analysis in the vertical direction of the TV band in an experimental scenario.

[0027] Figure 14 Radiation pattern formed by signal analysis of the FM band signal in the antenna assembly in an experimental scenario.

[0028] Figure 15 Radiation pattern formed by signal analysis of the DAB band signal in the antenna assembly in an experimental scenario.

[0029] Explanation of reference numerals:

[0030] 10. Window glass; 100. Glass body; 110. First side; 120. Second side; 130. Third side; 140. Fourth side; 200. Defogging and heating unit; 210. Heating strip; 220. Equipotential line; 230. First extension line; 240. Third extension line; 241. First connection line; 242. Second connection line; 300. Antenna assembly; 301. Second extension line; 310. First antenna structure; 311. Second feeding part; 312. Fourth radiation branch; 3121. Reference line; 313. Horizontal branch; 314. Vertical branch; 320. Second antenna structure; 321. Third feeding part; 322. Fifth radiation branch; 323. Sixth radiation branch; 324. Seventh radiation branch; 325. First segment; 326. Second segment; 327. Third segment; 330. Third antenna structure; 331. First feeding part; 332. First radiation branch; 333. Second radiation branch; 334. Third radiation branch; 340. Fourth antenna structure; 341. Fourth feeding part; 342. Eighth radiation branch; 342a. First vertical section; 342b. First horizontal section; 342c. Second vertical section; 343. Ninth radiation branch; 344. Tenth radiation branch; 350. Free line; X. Height direction; Y. Width direction. Detailed implementation manners

[0031] To make the above objects, features, and advantages of the present application more apparent and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0032] For ease of explanation, the operating frequency bands that the window glass in this embodiment may involve are introduced below. Specifically, the operating frequency bands involved in the window glass mainly include: Amplitude Modulation Radio Broadcasting, abbreviated as AM broadcasting, whose operating frequency band is between (530 KHz - 1710 KHz); Frequency Modulation Radio Broadcasting, abbreviated as FM broadcasting, whose operating frequency band is between (76 MHz - 108 MHz); Digital Audio Broadcasting, abbreviated as DAB, whose operating frequency band is between (174 MHz - 240 MHz); Digital Television Broadcasting, which can also be called TV broadcasting, whose operating frequency band is between (470 MHz - 710 MHz).

[0033] When the signals in the operating frequency band of AM broadcasting are transmitted in free space, the maximum wavelength value and the minimum wavelength value are λ1 and λ2 respectively, and the wavelength range of the signals in the operating frequency band of AM broadcasting can be (k * λ2 ~ k * λ1). When the signals in the operating frequency band of FM broadcasting are transmitted in a medium, the maximum wavelength value and the minimum wavelength value are λ3 and λ4 respectively, and the wavelength range of the signals in the operating frequency band of FM broadcasting can be (k * λ4 ~ k * λ3). When the signals in the operating frequency band of DAB are transmitted in a medium, the maximum wavelength value and the minimum wavelength value are λ5 and λ6 respectively, and the wavelength range of the signals in the operating frequency band of DAB can be (k * λ6 ~ k * λ5). When the signals in the operating frequency band of TV broadcasting are transmitted in a medium, the maximum wavelength value and the minimum wavelength value are λ7 and λ8 respectively, and the wavelength range of the signals in the operating frequency band of TV broadcasting can be (k * λ8 ~ k * λ7). Among them, k is the wavelength shortening rate, which is related to the dielectric material.

[0034] In addition, the "mutual coupling" involved in the window glass in this embodiment may refer to the capacitive coupling method. Specifically, capacitive coupling means that the conductive elements are not directly electrically connected, but the signal transmission is achieved by setting the conductive elements relatively spaced apart, that is, the signals can be transmitted between the mutually coupled conductive elements through the capacitive coupling method between different conductive elements.

[0035] Generally, according to the wave velocity formula V (wave velocity) = λ (wavelength) * f (frequency), that is, λ = V / f. In the same medium, the wave propagation speed is the same, and the product of the wavelength and frequency remains unchanged. Therefore, the wavelength and frequency are inversely proportional, that is, the higher the frequency, the shorter the wavelength. Correspondingly, the longer the length of the radiation stub, the greater the propagation distance of the radiation signal on the radiation stub. That is, the length of the radiation stub is positively correlated with the wavelength of the radiation signal on the radiation stub. It can be deduced that the length of the radiation stub is negatively correlated with the radiation frequency of the radiation signal on the radiation stub. Therefore, by adjusting the electrical length of each radiation stub, the signal frequency of the frequency band can be correspondingly adjusted.

[0036] Refer to Figures 1 to 2 As shown, the present application provides a window glass 10. Specifically, the window glass 10 includes a glass body 100, a defogging heating unit 200, and an antenna assembly 300. The defogging heating unit 200 and the antenna assembly 300 are both installed on the glass body, and the defogging heating unit 200 is provided with a plurality of conductive wires.

[0037] The first antenna structure 310 is used to radiate signals in the first operating frequency band. The second antenna structure 320 is coupled to the first antenna structure 310, and the third antenna structure 330 is coupled to the conductive wire, so that both the second antenna structure 320 and the third antenna structure 330 can radiate signals in the second operating frequency band. Specifically, at least part of the second antenna structure 320 is disposed opposite to or adjacent to at least part of the first antenna structure 310 to achieve mutual coupling between the second antenna structure 320 and the first antenna structure 310, so that the second antenna structure 320 can radiate signals in the second operating frequency band. At least part of the third antenna structure 330 is disposed opposite to at least part of the conductive wire to achieve mutual coupling between the third antenna structure 330 and the conductive wire, so that the third antenna structure 330 can radiate signals in the second operating frequency band. And at least one of the second antenna structure 320 and the third antenna structure 330 is also used to radiate signals in the third operating frequency band.

[0038] Among them, the signal frequency of the first operating frequency band is less than the signal frequencies of the second operating frequency band and the third operating frequency band, and the signal frequency of the second operating frequency band is less than the signal frequency of the third operating frequency band.

[0039] For the sake of easy understanding, the radiation scenarios in the antenna assembly 300 will be described below.

[0040] The first antenna structure 310 is used to radiate signals in the first operating frequency band (such as AM broadcast signals). The first operating frequency band is determined by the resonant frequency of the first antenna structure 310 itself. When the first antenna structure 310 is fed alone, it can radiate signals in the first operating frequency band. In one embodiment, the first operating frequency band can be the AM band.

[0041] At least a part of the second antenna structure 320 is disposed opposite to at least a part of the first antenna structure 310. When the second antenna structure 320 is coupled to the first antenna structure 310, the radiation signal in the second antenna structure 320 can be coupled into the first antenna structure 310, and then the radiation signal on the second antenna structure 320 can be radiated onto a larger range of the first antenna structure 310, which is beneficial to increasing the radiation gain of this part of the second antenna structure 320 and enabling the second antenna structure 320 to emit a lower-frequency radiation signal (i.e., the signal in the second operating frequency band). In one embodiment, the second operating frequency band may be the FM band.

[0042] Similarly, when at least a part of the third antenna structure 330 is coupled to at least a part of the conductive wire, the radiation gain of the third antenna structure 330 can be increased through the conductive wire, so as to enable the second antenna structure 320 to radiate the signal in the second operating frequency band.

[0043] Furthermore, at least one of the second antenna structure 320 and the third antenna structure 330 can radiate the signal in the third operating frequency band. That is, at least one of the second antenna structure 320 and the third antenna structure 330 can not only radiate the signal in the third operating frequency band but also radiate the signal in the second operating frequency band, so that at least one of the second antenna structure 320 and the third antenna structure 330 has the function of a composite antenna. In one embodiment, the third operating frequency band may be the DAB band.

[0044] In this way, through the settings of the first antenna structure 310, the second antenna structure 320, and the third antenna structure 330, the antenna assembly 300 can form radiation signals in three operating frequency bands, which can cover the communication frequency bands of most current communication devices. Further, at least one of the second antenna structure 320 and the third antenna structure 330 can radiate the signals in two operating frequency bands, enabling the second antenna structure 320 and the third antenna structure 330 to be optimized to form a composite antenna, and then at least increasing the radiation gain in the second operating frequency band, while without increasing the number of single stub settings, thereby reducing the influence on the use of the glass body due to excessive single stub settings and reducing the risk of interference between the single stub and the defogging heating unit 200 caused by excessive single stub settings.

[0045] It should be noted that the antenna assembly 300 and the defogging heating unit 200 can be disposed on the same surface or on different surfaces of the glass body. In addition, different antenna structures can also be disposed on the same surface or on different surfaces, which can be selected according to different production requirements and will not be limited too much here.

[0046] Specifically, in some embodiments, refer back to Figure 2, the demisting heating unit 200 includes a plurality of heating bars 210. The plurality of heating bars 210 are arranged at intervals in sequence. Specifically, in one embodiment, the demisting heating unit 200 further includes two spaced busbars. The plurality of heating bars 210 are arranged at intervals in sequence between the two busbars. Among them, the two busbars can be electrically connected to the positive and negative poles of an external power supply respectively, so that the heating bars 210 can be fed with power for heating. In another embodiment, the plurality of heating bars 210 can be arranged at intervals in sequence along the height direction X of the glass body.

[0047] Furthermore, the plurality of conductive wires can further include a plurality of equipotential lines 220. The equipotential lines 220 intersect with the plurality of heating bars 210, and the plurality of equipotential lines 220 are electrically connected to the plurality of heating bars 210. Optionally, in one embodiment, each equipotential line 220 is arranged perpendicular to the plurality of heating bars 210. In another embodiment, the intersection angle between each equipotential line 220 and the plurality of heating bars 210 is between 80° and 100°.

[0048] It should be noted that when the second antenna structure 320 is coupled with the conductive wire, it can be the mutual coupling between the second antenna structure 320 and the heating bar 210, or at least one or both combinations of the mutual coupling between the second antenna structure 320 and the equipotential line 220.

[0049] In some embodiments, the conductive wire further includes an extension wire. The extension wire is used to be bent and electrically connected to the equipotential line 220. Among them, at least part of one of the second antenna structure 320 and the third antenna structure 330 is arranged opposite to the heating bar 210, and the other is arranged opposite to the extension wire, so that one of the second antenna structure 320 and the third antenna structure 330 is mutually coupled with the heating bar 210, and the other is mutually coupled with the extension wire.

[0050] It can be understood that the second antenna structure 320 can be mutually coupled with the first antenna structure 310, or can be coupled with the heating bar 210 or the extension wire, so as to further increase the radiation of the low-frequency signal in the second antenna structure 320. Furthermore, it can be avoided that both the second antenna structure 320 and the third antenna structure 330 are coupled to the same heating bar 210 or equipotential line 220, and the mutual coupling interference between the second antenna structure 320 and the third antenna structure 330 is avoided, ensuring the radiation performance of both.

[0051] In addition, generally, the farther the radiation signal is from the radiation source, the lower its radiation intensity. Based on this, one of the second antenna structure 320 and the third antenna structure 330 can be mutually coupled with the heating bar 210, and the other can be mutually coupled with the extension wire, so that the directions with the maximum gain in the second antenna structure 320 and the third antenna structure 330 are arranged perpendicular to each other.

[0052] In an example description, the second antenna structure 320 is coupled to the heating strip 210, so that the radiation signal with a relatively high intensity in the second antenna structure 320 can be transmitted onto this part of the heating strip 210, so as to make the radiation signal of the second antenna structure 320 have a sufficient horizontal radiation component. The third antenna structure 330 is coupled to the extension line, so that the radiation signal with a relatively high intensity in the third antenna structure 330 can be transmitted onto this part of the extension line, so as to make the radiation signal in the third antenna structure 330 have a sufficient vertical radiation component.

[0053] Similarly, in another example description, the third antenna structure 330 is coupled to the heating strip 210, which can make the radiation signal of the third antenna structure 330 have a sufficient horizontal radiation component. The second antenna structure 320 is coupled to the extension line, which can make the radiation signal of the second antenna structure 320 have a sufficient vertical radiation component. Therefore, in this example, this coupling and matching method is beneficial to improving the directivity of the antenna assembly 300.

[0054] Furthermore, in one of the embodiments, the second antenna structure 320 is further configured to radiate signals in the fourth operating frequency band. At least part of the second antenna structure 320 is disposed opposite to the heating strip 210, so that the second antenna structure 320 is coupled to the heating strip 210, so that the second antenna structure 320 can radiate signals in the fourth operating frequency band. At least part of the third antenna structure 330 is disposed opposite to the extension line, so that the third antenna structure 330 is coupled to the extension line, so that the third antenna structure 330 can radiate signals in the second operating frequency band. Wherein, the signal frequency in the fourth operating frequency band is greater than the signal frequency in the third operating frequency band.

[0055] In this way, the second antenna structure 320 can realize the radiation of signals in at least two operating frequency bands (the second operating frequency band and the fourth operating frequency band respectively). Correspondingly, the third antenna structure 330 can realize the radiation of signals in at least two operating frequency bands (the second operating frequency band and the third operating frequency band respectively). Based on this, by setting three antenna structures, the antenna assembly 300 can realize four operating frequency bands, and without increasing the number of antennas, the radiation type of the antenna assembly 300 is increased.

[0056] In some other embodiments, the third antenna structure 330 is further configured to radiate high-frequency signals in the second operating frequency band. At least part of the third antenna structure 330 is disposed opposite to the extension line, so that the third antenna structure 330 is coupled to the extension line, so that the third antenna structure 330 can radiate at least part of the low-frequency signals in the second operating frequency band.

[0057] Thus, the third antenna structure 330 can radiate low-frequency and high-frequency signals in the second operating frequency band, which is beneficial to improving the radiation gain of the radiation signals of the antenna assembly 300, enabling coverage of both low-frequency and high-frequency signals, and improving the interactive communication ability of the antenna assembly 300.

[0058] In one embodiment, as Figure 3 shown, the third antenna structure 330 includes a first feeding portion 331, a first radiation branch 332, and a second radiation branch 333. The first radiation branch 332 and the second radiation branch 333 are fed and connected to the first feeding portion 331. Among them, the first radiation branch 332 is used to radiate signals in the third operating frequency band; at least part of the second radiation branch 333 is disposed opposite to the heating strip 210, so that the second radiation branch 333 and the heating strip 210 are coupled to each other. Among them, the first radiation branch 332 and the second radiation branch 333 are arranged such that the second radiation branch 333 is used to radiate signals in the second operating frequency band.

[0059] It can be understood that in this embodiment, the third antenna structure 330 can have at least two radiation paths. One is to radiate the radiation signal corresponding to the third operating frequency band through the first radiation branch 332; the other is to provide the radiation signal corresponding to the second operating frequency band when the second radiation branch 333 and the heating strip 210 are coupled to each other. Thus, the third antenna structure 330 can radiate radiation signals in different operating frequency bands, which is beneficial to broadening the bandwidth of the third antenna structure 330, achieving coverage of multiple operating frequency bands, thereby realizing the function of a composite antenna for the third antenna structure 330, avoiding excessive single-branch antenna settings, and being beneficial to reducing the occupation of space. Further, the second radiation branch 333 and the heating strip 210 are coupled to each other, so that the radiation signal can increase the radiation gain of the second radiation branch 333 through the heating strip 210, so that the radiation signal of the second radiation branch 333 has a horizontal radiation component in the width direction Y, that is, the horizontal direction, to increase the radiation of the low-frequency signal of the second radiation branch 333.

[0060] Among them, the first radiation branch 332 and the second radiation branch 333 in the above embodiment include, but are not limited to, one or more arbitrary combinations of a straight line, an L shape, an F shape, an I shape, a C shape, a ring shape, etc. In addition, by flexibly adjusting and setting the lengths of the first radiation branch 332 and the second radiation branch 333, it is possible to operate in various different frequency bands.

[0061] In another embodiment, refer back to Figure 3, the third antenna structure 330 includes a first feeding portion 331, a first radiation branch 332, and a third radiation branch 334. The first radiation branch 332 and the third radiation branch 334 are electrically connected to the first feeding portion 331. The antenna assembly 300 further includes a first extension line 230, and the first extension line 230 is bent and connected to the equipotential line 220. Among them, the first radiation branch 332 is used to radiate signals in the third operating frequency band, and at least a part of the third radiation branch 334 is disposed opposite to the first extension line 230, so that the third radiation branch 334 is coupled to the equipotential line 220, so that the third radiation branch 334 is used to radiate signals in the second operating frequency band.

[0062] It can be understood that since the equipotential line 220 is vertically arranged with respect to the heating strip 210, the equipotential line 220 is vertically arranged between a plurality of heating strips 210, and the voltage at each point on the equipotential line 220 is equal. The bent connection of the first extension line 230 and the equipotential line 220 makes the voltage on the first extension line 230 relatively uniform, thereby increasing the radiation uniformity of the third radiation branch 334.

[0063] Furthermore, the cooperation between the equipotential line 220 and the heating strip 210 makes that when the third radiation branch 334 is coupled to the equipotential line 220, the radiation range is increased, and since the radiation signal can pass through a plurality of horizontally arranged heating strips 210 and a plurality of vertically arranged equipotential lines 220, the radiation signal has a horizontal radiation component and a vertical radiation component after being coupled to the first extension line 230, so that the radiation directivity of the first antenna structure 310 can be increased.

[0064] Among them, the shape of the third radiation branch 334 can be, but is not limited to, an open figure such as C-shaped, L-shaped, U-shaped or a straight shape, etc., and can also be a closed figure to form a closed circuit, such as O-shaped, rectangular, etc., and will not be limited too much here.

[0065] In addition, in an embodiment, the first radiation branch 332 is disposed close to the side of the third radiation branch 334 away from the defogging heating unit 200, so that the third radiation branch 334 is spaced between the first radiation branch 332 and the second radiation branch 333. In this way, the second radiation branch 333 can be arranged to avoid the first radiation branch 332 to avoid mutual signal interference, thereby improving the radiation performance of the third antenna structure 330.

[0066] Combined with any embodiment of the above antenna assembly 300, such as Figure 4As shown, the first antenna structure 310 further includes a second feeding portion 311 and a fourth radiation branch 312. The fourth radiation branch 312 is provided with a plurality of reference lines 3121, and the plurality of reference lines 3121 are all electrically connected to the second feeding portion 311. Among them, the plurality of reference lines 3121 are arranged at intervals in sequence. In this way, the radiation signal frequency of the first antenna structure 310 is relatively small, and the setting range of the first antenna structure 310 is relatively large. When the first antenna structure 310 is coupled with the second antenna structure 320, the radiation signal can be coupled to the first antenna structure 310 to increase the radiation gain of the second antenna structure 320 and enhance the low-frequency signal of the second antenna structure 320.

[0067] Among them, the signal gain degree of the first working frequency band in the first antenna structure 310 can be determined by factors such as the set number of the reference lines 3121 and the set interval of the reference lines 3121. In addition, the number of the reference lines 3121 can be 2, 3, 4, 5, etc. Specifically, the plurality of reference lines 3121 can be arranged at intervals in sequence, which is beneficial to increasing the uniformity of the radiation signal distribution.

[0068] In some embodiments, the plurality of reference lines 3121 are arranged at intervals in sequence along the height direction X of the glass body. The plurality of reference lines 3121 are arranged at intervals along the height direction X of the glass body to form a parallel radiation array, so that the low-frequency radiation is evenly distributed, which is beneficial to reducing the antenna radiation loss. For example, when 4 reference lines 3121 are connected in parallel, the total conductor resistance can be reduced to 1 / 4 of that of a single line, which is beneficial to reducing the ohmic loss (I²R), and then optimizing the radiation efficiency of the antenna.

[0069] Further, in one embodiment, see Figure 4 , the first antenna structure 310 further includes a horizontal branch 313 and a vertical branch 314. One end of the horizontal branch 313 is electrically connected to the second feeding portion 311, and the other end is electrically connected to the vertical branch 314. The plurality of reference lines 3121 are connected in parallel to the vertical branch 314.

[0070] In this way, the radiation signal goes from the second feeding portion 311 to the horizontal branch 313, then radiates to the vertical branch 314, and finally radiates and shunts to each reference line 3121. This is beneficial to reducing the circuit design difficulty when the second feeding portion 311 is directly connected in parallel with the plurality of reference lines 3121 alone, and avoids the radiation signal transmission congestion of single-point feeding when the plurality of reference lines 3121 are directly connected in parallel with the second feeding portion 311. It is beneficial to the uniform distribution of radiation, thus beneficial to reducing the skin effect loss, and then enhancing the antenna radiation performance.

[0071] In another embodiment, one end of multiple reference lines 3121 is connected in parallel to the vertical branch 314, and the other ends of the multiple reference lines 3121 extend in a direction away from the second feeding portion 311. Thus, different from extending the multiple reference lines 3121 in a direction close to the second feeding portion 311, the other ends of the multiple reference lines 3121 extending in a direction away from the second feeding portion 311 is beneficial to increasing the setting range of the second antenna structure 320, thereby increasing the radiation gain of the second antenna structure 320.

[0072] In some embodiments, referring back Figure 4 to the reference Figure 5 shown, the second antenna structure 320 includes a third feeding portion 321 and a fifth radiation branch 322, and the fifth radiation branch 322 is electrically connected to the third feeding portion 321. The antenna assembly 300 further includes a second extension line 301, and the second extension line 301 is electrically connected to a reference line 3121. At least a part of the fifth radiation branch 322 is disposed opposite to at least a part of the second extension line 301, so that the fifth radiation branch 322 is coupled to the first antenna structure 310, enabling the fifth radiation branch 322 to radiate signals in the second operating frequency band. Thus, the fifth radiation branch 322 can be coupled to a relatively large range of the first antenna structure 310, and then the fifth radiation branch 322 can have a relatively large radiation gain, enhancing the low-frequency signals of the fifth radiation branch 322.

[0073] Further, in other embodiments, referring back Figure 5 to the reference, the second antenna structure 320 further includes a sixth radiation branch 323, and the sixth radiation branch 323 is electrically connected to the third feeding portion 321. At least a part of the sixth radiation branch 323 is disposed opposite to at least a part of the heating strip 210, so that the sixth radiation branch 323 is coupled to the heating strip 210. Thus, the second antenna structure 320 can also be coupled to the heating strip 210, and then, through the relatively large setting range of the heating strip 210, the radiation gain of the second antenna structure 320 can be increased, and the radiation amounts of the second antenna structure 320 in the horizontal radiation component and the vertical radiation component can be increased, enhancing the low-frequency signals of the second antenna structure 320.

[0074] In addition, in one of the embodiments, the second antenna structure 320 is further configured to radiate signals in the fourth operating frequency band. At least a part of the sixth radiation branch 323 is disposed opposite to at least a part of the heating strip 210, so that the sixth radiation branch 323 is coupled to the heating strip 210, enabling the sixth radiation branch 323 to radiate signals in the fourth operating frequency band. Thus, the second antenna structure 320 can radiate three operating frequency bands, enabling the first antenna structure 310 and the second antenna structure 320 to cooperate to radiate signals in four operating frequency bands, increasing the types of radiation frequency bands without increasing the number of antenna assemblies 300.

[0075] In some embodiments, Figure 5 , the second antenna structure 320 further includes a seventh radiation branch 324. The fifth radiation branch 322 and the seventh radiation branch 324 are connected in parallel and are both electrically connected to the third feeding portion 321. In this way, the third antenna structure 330 can have at least two radiation paths to radiate different radiation frequency bands, thereby increasing the radiation performance of the second antenna structure 320.

[0076] Among them, the seventh radiation branch 324 can be used to radiate one or a combination of signals in the second working frequency band, signals in the third working frequency band, and signals in the fourth working frequency band. In one example, the seventh radiation branch 324 can be used to radiate signals in the third working frequency band, and to radiate signals in the fourth working frequency band. In this way, the second antenna structure 320 can gain the radiation signals of the three working frequency bands, and cooperate with the third antenna structure 330 in the above embodiment, which is beneficial to gain the directionality of the radiation signals of the three working frequency bands, thereby improving the range of the antenna assembly 300 for transmitting and receiving radiation signals.

[0077] It should be noted that the fifth radiation branch 322, the sixth radiation branch 323 and the seventh radiation branch 324 may be, but are not limited to, one or more arbitrary combinations of a straight line, an L shape, an F shape, an I shape, a C shape and a ring shape. In addition, in the above embodiment, the fifth radiation branch 322, the sixth radiation branch 323 and the seventh radiation branch 324 may be connected in a distributed parallel manner (i.e., the third feeding unit 321 feeds the fifth radiation branch 322, the sixth radiation branch 323 and the seventh radiation branch 324 in a one-to-one correspondence single-point), or may be partially intensively connected in parallel (i.e., the third feeding unit 321 feeds at least one of the fifth radiation branch 322, the sixth radiation branch 323 and the seventh radiation branch 324 in a non-single-point manner), which will be described in detail later.

[0078] In one embodiment, Figure 5 The second antenna structure 320 includes a first segment 325, a second segment 326 and a third segment 327. At least part of the first segment 325 and at least part of the third segment 327 are arranged opposite to each other (in one example, the extension direction of at least one of the first segment 325 and the third segment 327 is arranged parallel to the height direction X). The first segment 325 is arranged at intervals with the third segment 327 through the second segment 326. One end of the first segment 325 is bent and electrically connected to the third feeding portion 321, and the other end is bent and electrically connected to one end of the second segment 326. One end of the second segment 326 that is arranged away from the first segment 325 is bent and electrically connected to the third segment 327. Among them, the fifth radiation branch node 322, the sixth radiation branch node 323 and the seventh radiation branch node 324 are electrically connected to the third segment 327 in parallel.

[0079] In this way, the fifth radiation stub 322, the sixth radiation stub 323, and the seventh radiation stub 324 are fed through the path formed by the first segment 325, the second segment 326, and the third segment 327, so as to generate the resonant current of the fifth radiation stub 322, the sixth radiation stub 323, and the seventh radiation stub 324, which can reduce the signal radiation congestion when each radiation stub is fed separately by the third feeding portion 321, is beneficial to reducing the radiation burden of the third feeding portion 321 on multiple radiation stubs, and is beneficial to improving the radiation uniformity of the radiation signal.

[0080] Furthermore, since bends are formed between the first segment 325, the second segment 326, and the third segment 327, and the first segment 325 and the third segment 327 will have radiation components in the height direction X (vertical radiation components), correspondingly, the second segment 326 and the third segment 327 will have radiation components in the width direction Y (horizontal radiation components), thereby improving the radiation directivity of the third antenna structure 330 and broadening the radiation gain of the antenna assembly 300.

[0081] In one embodiment, the second antenna structure can be the radiation path of the first segment 325, the second segment 326, the third segment 327, and the seventh radiation stub 324 (for the convenience of distinction, this radiation path will be named radiation path one below, and so on). At this time, the radiation path one can enable the second antenna structure 320 to radiate signals in the third operating frequency band. In addition, in one implementation, the length of the radiation path one is between (0.2k*λ6~0.3k*λ5).

[0082] In another embodiment, the sixth radiation stub 323, the first segment 325, the second segment 326, and the third segment 327 form a radiation path one, and the radiation path one can radiate signals in the fourth operating frequency band.

[0083] Since the fifth radiation stub 322 and the sixth radiation stub 323 are connected in parallel to the third segment 327, a radiation path two of the first segment 325, the second segment 326, a part of the third segment 327, and the fifth radiation stub 322 can be formed. The radiation signal on the radiation path two can be coupled to the first antenna structure 310 through the second extension line 301, so that the wavelength of the resonant signal can be increased through the larger radiation path on the first antenna structure 310, thereby realizing the low-frequency conversion of the resonant signal on the radiation path two. In one implementation, when the radiation path two is coupled to the second extension line 301, the second antenna structure 320 can radiate low-frequency signals in the second operating frequency band.

[0084] Further, a radiation path three formed by a part of the first segment 325, the second segment 326, the third segment 327 (the length of the part of the third segment 327 can be 0 in one example), and the sixth radiation stub 323 can form a capacitive coupling with the heating strip 210 to couple energy to the heating strip 210. Since the path of the heating strip 210 is long, multiple segments of radiation can be generated at the resonant point, and the radiation is shunted to the heating strip 210, introducing a horizontal radiation component to the radiation path three, which can improve the horizontal polarization gain of the antenna assembly 300. In one embodiment, when the radiation path three is coupled to the heating strip 210, it can radiate signals in the fourth operating frequency band. In one example, the corresponding length of the radiation path three can be (0.2*k*λ8 - 0.3*k*λ7).

[0085] Further, in other embodiments, as Figure 6 shown, the fifth radiation stub 322, the sixth radiation stub 323, and the seventh radiation stub 324 can be separately connected in parallel to the third feeding portion 321.

[0086] In one embodiment, in combination with Figure 5 and Figure 6 shown, the fifth radiation stub 322 is disposed between the sixth radiation stub 323 and the seventh radiation stub 324. In this way, the overall lengths of the radiation path one and the radiation path two mentioned in the above embodiments can be made not very different, so that the radiation path two can enhance the operating frequency band emitted by the radiation path one. (For example, the radiation path two can also enhance the low-frequency signals in the third operating frequency band).

[0087] In some embodiments, at least one of the second antenna structure 320 and the third antenna structure 330 can also radiate signals in the fourth operating frequency band. Among them, the frequency of the signals in the fourth operating frequency band is greater than the frequency of the signals in the third operating frequency band. In this way, at least one of the second antenna structure 320 and the third antenna structure 330 can radiate signals in the second operating frequency band, the third operating frequency band, and the fourth operating frequency band, increasing the types of radiation signals to achieve an improvement in the composite antenna performance of at least one of the second antenna structure 320 and the third antenna structure 330.

[0088] Combined with any of the embodiments of the above antenna assembly 300, referring back to Figure 2 and referring to Figure 7As shown, the antenna assembly 300 further includes a fourth antenna structure 340. The fourth antenna structure 340 includes a fourth feeding portion 341 and an eighth radiation branch 342. The eighth radiation branch 342 is electrically connected to the fourth feeding portion 341. And the eighth radiation branch 342 is used to radiate signals in the fourth operating frequency band. Among them, the signal frequency of the fourth operating frequency band is greater than the signal frequency of the third operating frequency band. In this way, the antenna assembly can realize the radiation of signals in four operating frequency bands, can meet most current radiation requirements, and improve the communication performance of the window glass 10.

[0089] Among them, the eighth radiation branch 342 can be, but is not limited to, structures such as C-shaped and L-shaped.

[0090] In one embodiment, the working scenario of the antenna assembly is as follows: In combination with the above embodiments, the first antenna structure can radiate the operating frequency of the first operating frequency band (such as the AM band), the second antenna structure 320 can radiate signals in the second operating frequency band (FM band), the third operating frequency band (such as the DAB band), and the fourth operating frequency band (such as the TV band), and the third antenna structure 330 can radiate signals in the second operating frequency band (FM band), the third operating frequency band (such as the DAB band), and the fourth operating frequency band (such as the TV band). The fourth antenna structure 340 can radiate signals in the fourth operating frequency band (such as the TV band). In this way, the cooperation of the second antenna structure 320 and the third antenna structure 330 can achieve the effect of a diversity antenna, making the radiation pattern of the antenna assembly 300 have better omnidirectionality in the second and third operating frequency bands, and improving the signal reception quality in the second and third operating frequency bands. At the same time, the cooperation of the second antenna structure 320, the third antenna structure 330, and the fourth antenna structure 340 can achieve the effect of another diversity antenna, making the radiation pattern of the antenna assembly 300 have better omnidirectionality in the fourth operating frequency band, and improving the signal reception quality in the fourth operating frequency band.

[0091] In one embodiment, the eighth radiation branch 342 includes a first vertical section 342a, a first horizontal section 342b, and a second vertical section 342c. The first vertical section 342a and the second vertical section 342c are oppositely arranged at both ends of the first horizontal section 342b and are perpendicular to the first horizontal section 342b. The first vertical section 342a is used for feeding cooperation with the fourth feeding portion 341, and the second vertical section 342c is connected to an equipotential line 220.

[0092] Further, in some embodiments, in combination with Figure 2 and Figure 7 as shown, the fourth antenna structure 340 further includes a ninth radiation branch 343, and the eighth radiation branch 342 is electrically connected to the ninth radiation branch 343.

[0093] In one embodiment, as Figure 7As shown, the ninth radiation branch 343 is electrically connected between the first vertical segment 342a and the second vertical segment 342c. The eighth radiation branch 342 and the ninth radiation branch 343 are connected in a closed loop to form a closed radiation loop.

[0094] In this way, on the one hand, it is beneficial to increase the radiation gain of the closed radiation loop without increasing the total length of the fourth antenna structure 340, thereby facilitating the gain of the operating frequency band emitted by the fourth antenna structure 340. On the other hand, the closed radiation loop can make the feeding current equal at each point, which is beneficial to improving the radiation uniformity of the fourth antenna structure 340.

[0095] In another embodiment, as Figure 2 shown, one end of the ninth radiation branch 343 is connected to the first vertical segment 342a, and the other end is spaced from the second vertical segment 342c. And the ninth radiation branch 343 is disposed opposite to the first horizontal segment 342b. In this way, the ninth radiation branch 343 and the first horizontal segment 342b can generate the same radiation synchronously, which is beneficial to improving the distribution uniformity of the radiation signal of the closed radiation loop, so as to enhance the radiation performance of the fourth antenna structure 340. Among them, the signal frequency that the fourth antenna structure 340 can emit can be adjusted by adjusting the length of the ninth radiation branch 343. In an example scenario, the ninth radiation branch 343 can radiate high-frequency signals in the fourth operating frequency band.

[0096] In addition, in one embodiment, referring back to Figure 2 and Figure 7 , the fourth antenna structure 340 further includes a tenth radiation branch 344. The tenth radiation branch 344 is electrically connected to the first vertical segment 342a, and the tenth radiation branch 344 is disposed opposite to the first horizontal segment 342b. Among them, the length of the tenth radiation branch 344 is not equal to the length of the first horizontal segment 342b.

[0097] In this way, the radiation path four can be formed through the feeding connection between the first vertical segment 342a and the tenth radiation branch 344, so that the fourth antenna structure 340 can radiate signals in different frequency operating bands or even signals in different operating bands, and the frequency range of the radiation signal of the fourth antenna structure 340 is broadened.

[0098] Referring to Figure 1 , in one embodiment, the second vertical segment 342c is collinearly arranged and electrically connected with an equipotential line 220, which is beneficial to improving the horizontal polarization component in the fourth operating frequency band.

[0099] Combined with any of the above embodiments of the antenna assembly 300, referring back to Figure 1, on the glass body, a first side 110 and a second side 120 are oppositely provided along the height direction X of the glass body. The defogging heating unit 200 is arranged close to the first side 110. The antenna assembly 300 is arranged close to the second side 120. In addition, the defogging heating unit 200 is arranged close to the first side 110, and the antenna assembly 300 is arranged close to the second side 120, which can enable the defogging heating unit 200 and the antenna assembly 300 to be arranged in an avoidance manner, avoiding the antenna assembly 300 from affecting the integration performance of the defogging heating unit 200, thereby avoiding the weakening of the defogging performance of the defogging heating unit 200, and also reducing the unnecessary interference of the defogging heating unit 200 on the antenna assembly 300.

[0100] In some embodiments, the first antenna structure 310 and the fourth antenna structure 340 are arranged close to the second side 120. One of the third antenna structure 330 and the fourth antenna structure 340 is arranged at an interval between the first antenna structure 310 and the defogging heating unit 200, and the other is arranged at an interval between the fourth antenna structure 340 and the defogging heating unit 200.

[0101] In this way, the signal radiation at the edge of the glass body can be relatively sufficient through the first antenna structure 310 and the fourth antenna structure 340. Further, when one of the third antenna structure 330 and the fourth antenna structure 340 is arranged at an interval between the first antenna structure 310 and the defogging heating unit 200, and the other is arranged at an interval between the fourth antenna structure 340 and the defogging heating unit 200, it is beneficial for the second antenna structure 320, the third antenna structure 330 and the conductive wire to be mutually coupled, and can avoid electromagnetic interference between the first antenna structure 310 and the fourth antenna structure 340, improving the radiation stability of the antenna assembly 300.

[0102] Further, referring back to Figure 1 , on the glass body, a third side 130 and a fourth side 140 are oppositely provided along the width direction Y of the glass body. Both the third side 130 and the fourth side 140 are connected between the first side 110 and the second side 120. Among them, the first antenna structure 310 is arranged close to the third side 130, and the fourth antenna structure 340 is arranged close to the fourth side 140.

[0103] In this way, on the one hand, by arranging the first antenna structure 310 close to the third side 130 and the fourth antenna structure 340 close to the fourth side 140, the signal radiated by the antenna assembly 300 can also cover the periphery of the glass body, enabling the radiation gain to be larger, so as to improve the communication and interaction performance of the vehicle.

[0104] In addition, in one of the embodiments, the window glass 10 further includes a light-transmitting area and an ink area provided on the window glass 10, and the ink area is wound around the light-transmitting area. At least a part of the ink area is provided on the third side 130, and at least a part of the ink area is provided on the fourth side 140. At least a part of the antenna assembly 300 is covered with the ink area. In this way, the interference of the antenna assembly 300 on the light-transmitting performance of the window glass 10 can be reduced.

[0105] Combined with any of the above embodiments of the antenna assembly 300, the antenna assembly 300 further includes a plurality of free wires 350, and at least one free wire 350 is spaced between at least two of the first antenna structure 310, the second antenna structure 320, and the third antenna structure 330, and the free wire 350 is collinear with at least two of at least a part of the first antenna structure 310, at least a part of the second antenna structure 320, and at least a part of the third antenna structure 330. In this way, the aesthetic performance of the antenna assembly 300 disposed on the glass body can be improved by the setting of the free wire 350.

[0106] Further, in some embodiments, the length of the free wire 350 satisfies the following condition: L < 0.1 * k * λ8; where λ8 is the minimum wavelength of the radiation signal corresponding to the fourth operating frequency band, k is the wavelength shortening rate, and L is the length of the free wire 350. In this way, the coupling effect between two adjacent antenna structures can be reduced by the setting of the free wire 350 to enhance the radiation performance of the antenna assembly 300.

[0107] In some embodiments, see Figure 1 , the defogging and heating unit 200 further includes a third extension wire 240, and the third extension wire 240 can be electrically connected to a conductive wire (such as the heating strip 210 or the equipotential line 220). In this way, by adjusting the length, shape, and position of the third extension wire 240 relative to the defogging and heating unit 200, etc., the radiation pattern of a specific frequency point can be improved.

[0108] Further, in one of the embodiments, the third extension wire 240 is disposed close to the first side 110, so that the setting of the third extension wire 240 can enhance the radiation gain of the window glass 10 in the height direction X and broaden the range of the interaction signals of the antenna assembly 300.

[0109] In addition, optionally, in one embodiment, the third extension line 240 includes a first connection line 241 and a second connection line 242. The first connection line 241 is connected between the conductive line and the second connection line 242, and the first connection line 241 and the second connection line 242 are bent and electrically connected, and at least a part of the second connection line 242 is disposed opposite to the first side 110. In this way, the second connection line 242 in the third extension line 240 can achieve the gain of the horizontal radiation component of the radiation signal, and the first connection line 241 can achieve the gain of the radiation signal in the vertical radiation component, thereby improving the radiation directivity of the antenna assembly 300 and optimizing the gain levels of the antenna assembly 300 in horizontal polarization and vertical polarization.

[0110] Combined with the embodiments in the above first antenna structure 310, second antenna structure 320, third antenna structure 330, and fourth antenna structure 340, wherein the radiation signals that the above antenna assembly 300 can emit are divided into four frequency bands. And the corresponding first working frequency band, second working frequency band, third working frequency band, and fourth working frequency band respectively correspond to the AM broadcast, FM broadcast, DAB frequency band, and TV frequency band.

[0111] Specifically, based on the above example scenario, both the second antenna structure 320 and the third antenna structure 330 can radiate the radiation signals of the FM broadcast, and the signals of the FM broadcast have a horizontal radiation component and a vertical radiation component. Correspondingly, both the second antenna structure 320 and the third antenna structure 330 can radiate the radiation signals of the DAB frequency band, and the radiation signals of the DAB frequency band have a horizontal radiation component and a vertical radiation component. In addition, the second antenna structure 320, the third antenna structure 330, and the fourth antenna structure 340 can all radiate the radiation signals of the TV frequency band, and the radiation signals of the TV frequency band have a horizontal radiation component and a vertical radiation component.

[0112] That is to say, due to the composite functions of the second antenna structure 320 and the third antenna structure 330, it is possible to gain three frequency bands. The following is a verification analysis of the gain of the radiation signals in the horizontal direction and the vertical direction for these three gain frequency bands respectively, and the following relationship diagrams are established. The relationship diagram established for verifying the radiation performance in the horizontal direction is marked as VP in the figure. The relationship diagram established for verifying the radiation performance in the vertical direction is marked as HP in the figure. Specifically, the abscissa in the relationship diagram represents the radiation frequency (referred to as f in the figure), and the corresponding unit of the radiation frequency is megahertz, and the abbreviation of megahertz is MHz. The ordinate represents the radiation performance (referred to as the ordinate of AVG Gain in the figure), and the corresponding unit of the radiation performance is decibel, and the abbreviation of decibel is dB.

[0113] For the sake of convenience of description, the trend curves of the radiation signals emitted when the second antenna structure 320, the third antenna structure 330, and the fourth antenna structure 340 are fed separately are named Ant1, Ant2, and Ant3 respectively. And the trend curve of the radiation signal formed after mixing in the same operating frequency band is named the composite group (correspondingly marked as Diversity in the figure).

[0114] In a verification scenario, the FM frequency band is verified and analyzed. Specifically, as Figure 12 shown, when detecting the radiation level of the FM frequency band in the horizontal direction, it is observed that when the first antenna structure 310, the second antenna structure 320, the third antenna structure 330, and the fourth antenna structure 340 all work, the change trend of the FM frequency band in the antenna assembly 300 can be as shown in the composite group. The amplitude of the overall FM frequency band signal increases as a whole, and the distribution change of the FM frequency band becomes more uniform. That is to say, the antenna assembly 300 in this embodiment is beneficial to increasing the radiation level of the FM frequency band signal in the horizontal direction.

[0115] Again, as Figure 13 shown, when detecting the radiation level of the FM frequency band in the vertical direction, it is observed that when the antenna assembly 300 simultaneously operates on the first antenna structure 310, the second antenna structure 320, the third antenna structure 330, and the fourth antenna structure 340, the change trend of the FM frequency band in the antenna assembly 300 can be as shown in the composite group. The amplitude of the overall FM frequency band signal increases as a whole, and the distribution change of the FM frequency band becomes more uniform. That is to say, the antenna assembly 300 in this embodiment is beneficial to increasing the radiation level of the FM frequency band signal in the vertical direction.

[0116] In another verification scenario, the DAB frequency band is verified and analyzed. Specifically, as Figure 14 shown, when detecting the radiation level of the DAB frequency band in the horizontal direction, it is observed that when the antenna assembly 300 simultaneously operates on the first antenna structure 310, the second antenna structure 320, the third antenna structure 330, and the fourth antenna structure 340, the change trend of the DAB frequency band in the antenna assembly 300 can be as shown in the composite group. The amplitude of the overall DAB frequency band signal increases as a whole, and the difference between the peaks and valleys of the DAB frequency band distribution decreases, that is, the overall frequency band distribution becomes more uniform. That is to say, the antenna assembly 300 in this embodiment is beneficial to increasing the radiation level of the DAB frequency band signal in the horizontal direction.

[0117] Again, as Figure 15As shown, in detecting the radiation level of the DAB band in the vertical direction, it is observed that when the antenna assembly 300 simultaneously acts on the first antenna structure 310, the second antenna structure 320, the third antenna structure 330, and the fourth antenna structure 340, the change trend of the DAB band in the antenna assembly 300 is as shown in the composite group. The amplitude of the overall DAB band signal increases as a whole, and the difference between the peaks and valleys of the DAB band distribution decreases, that is, the overall band distribution becomes more uniform. That is to say, the antenna assembly 300 in this embodiment is beneficial to increasing the radiation level of the DAB band signal in the vertical direction.

[0118] In another verification scenario, a verification analysis is carried out on the TV band. Specifically, as Figure 14 shown, in detecting the radiation level of the TV band in the horizontal direction, it is observed that when the antenna assembly 300 simultaneously acts on the first antenna structure 310, the second antenna structure 320, the third antenna structure 330, and the fourth antenna structure 340, the change trend of the TV band in the antenna assembly 300 is as shown in the composite group (that is, the mixture of the first antenna structure 310, the third antenna structure 330, and the fourth antenna structure 340). The amplitude of the overall TV band signal increases as a whole, and the difference between the peaks and valleys of the TV band distribution decreases, that is, the overall band distribution becomes more uniform. That is to say, the antenna assembly 300 in this embodiment is beneficial to increasing the radiation level of the TV band signal in the horizontal direction.

[0119] Again, as Figure 15 shown, in detecting the radiation level of the TV band in the vertical direction, it is observed that when the antenna assembly 300 simultaneously acts on the first antenna structure 310, the second antenna structure 320, the third antenna structure 330, and the fourth antenna structure 340, the change trend of the TV band in the antenna assembly 300 is as shown in the composite group. The amplitude of the overall TV band signal increases as a whole, and the difference between the peaks and valleys of the TV band distribution decreases, that is, the overall band distribution becomes more uniform. That is to say, the antenna assembly 300 in this embodiment is beneficial to increasing the radiation level of the TV band signal in the vertical direction.

[0120] Furthermore, in order to verify whether the second antenna structure 320 and the third antenna structure 330 can increase the distribution of the radiation signal, the present invention also verifies the directional distribution of the radiation signal in the FM band and the DAB band.

[0121] In an experimental scenario, the present invention performs distribution direction analysis on the FM frequency band to obtain a radiation pattern. It can be observed that the radiation distribution range of the composite group (Diversity group) is larger than that of the Ant2 and Ant3 groups, and the radiation distribution of the composite group is more uniform and more circular. That is, the composite function of the second antenna structure 320 and the third antenna structure 330 in the present invention can increase the radiation gain of the FM frequency band and make the distribution of the radiation signal more uniform, so as to cover all directions.

[0122] In another experimental scenario, the present invention performs distribution direction analysis on the DAB frequency band to obtain a radiation pattern. It can be observed that the radiation distribution range of the composite group is larger than that of the Ant2 and Ant3 groups, and the radiation distribution of the composite group is more uniform and more circular. That is, the composite function of the second antenna structure 320 and the third antenna structure 330 in the present invention can increase the radiation gain of the DAB frequency band and make the radiation signal distribution more uniform, so as to cover all directions.

[0123] Based on this, the vehicle window glass 10 in the above embodiment can effectively enhance the radiation performance of the antenna, realize multi-band radiation, and will not increase the number of single branches too much.

[0124] In addition, in some embodiments, when the antenna assembly 300 in the vehicle window glass 10 is a unidirectional antenna (that is, the antenna assembly 300 is only used to radiate signals outward), the transmission performance of the antenna assembly 300 gain antenna, that is, the transmission frequency band type of the gain antenna assembly 300 and the transmission range of the gain antenna assembly 300 can be used to improve the communication interaction performance of the vehicle window glass 10.

[0125] In some other embodiments, when the antenna assembly 300 in the vehicle window glass 10 is a bidirectional antenna (ie, the antenna assembly 300 can radiate signals outwardly and receive radiated signals inwardly), and referring to Figure 14 as well as Figure 15 It can be observed that when the composite group (i.e., the vehicle window glass 10 in the present application) is working, the interactive performance of the antenna assembly 300 in transmitting and receiving signals is increased. That is, the radiation gain of the transmitting and receiving signals of the antenna assembly 300 in the horizontal and vertical directions can be increased, and the frequency band type in which the antenna assembly 300 can achieve two-way interaction is increased.

[0126] The present application also provides a vehicle, comprising the vehicle window glass 10 in the above embodiment and a vehicle body, wherein the vehicle window glass 10 is mounted on the vehicle body. In some embodiments, the glass body 100 may be a rear windshield.

[0127] In the description of the present application, it should be understood that if there are terms such as "center", "connection", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0128] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0129] In the present application, unless otherwise clearly specified and limited, if there is a description such as a first feature being "on" or "under" a second feature, the meaning may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature. It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the present application are only for the purpose of illustration and do not represent the only implementation.

[0130] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification. The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A window glass, characterized in that, The window glass includes: A glass body; A defogging heating unit disposed on the window glass; the defogging heating unit is provided with a plurality of conductive wires; An antenna assembly disposed on the window glass; the antenna assembly includes a first antenna structure, a second antenna structure, and a third antenna structure; wherein, the first antenna structure is configured to radiate signals in a first operating frequency band; at least one of the second antenna structure and the third antenna structure is further configured to radiate signals in a third operating frequency band; The second antenna structure is coupled to the first antenna structure so that the second antenna structure can radiate signals in a second operating frequency band; the third antenna structure is coupled to the conductive wires so that the third antenna structure can radiate signals in a second operating frequency band; The signal frequency of the first operating frequency band is less than the signal frequencies of the second operating frequency band and the third operating frequency band, and the signal frequency of the second operating frequency band is less than the signal frequency of the third operating frequency band.

2. The window glass according to claim 1, characterized in that, The plurality of conductive wires include a plurality of heating strips; the heating strips are electrically connected to an external power source, and the plurality of heating strips are arranged at intervals in sequence.

3. The window glass according to claim 2, characterized in that, The plurality of conductive wires further include a plurality of equipotential lines; each equipotential line intersects with the plurality of heating strips and is electrically connected to the plurality of heating strips.

4. The window glass according to claim 3, characterized in that, The conductive wires further include extension lines, and the extension lines are configured to be bent and electrically connected to the equipotential lines; wherein, At least a part of one of the second antenna structure and the third antenna structure is disposed opposite to the heating strip, and the other is disposed opposite to the extension line, such that one of the second antenna structure and the third antenna structure is coupled to the heating strip, and the other is coupled to the extension line; And / or, the third antenna structure is further configured to radiate signals in the second operating frequency band, and at least a part of the third antenna structure is disposed opposite to the extension line, such that the third antenna structure is coupled to the extension line, so that the third antenna structure can radiate at least a part of the low-frequency signals in the second operating frequency band.

5. The window glass according to claim 4, characterized in that, The second antenna structure is further configured to radiate signals in a fourth operating frequency band; at least a part of the second antenna structure is disposed opposite to the heating strip, such that the second antenna structure is coupled to the heating strip, so that the second antenna structure can radiate signals in the fourth operating frequency band; at least a part of the third antenna structure is disposed opposite to the extension line, such that the third antenna structure is coupled to the extension line, so that the third antenna structure can radiate signals in the second operating frequency band; wherein, the signal frequency of the fourth operating frequency band is greater than the signal frequency of the third operating frequency band.

6. The window glass according to claim 2, wherein The third antenna structure includes a first feeding portion, a first radiation branch, and a second radiation branch. The first radiation branch and the second radiation branch are feeding-connected to the first feeding portion. Among them, the first radiation branch is used to radiate signals in the third operating frequency band. At least a part of the second radiation branch is disposed opposite to the heating strip, so that the second radiation branch and the heating strip are coupled to each other, so that the second radiation branch is used to radiate signals in the second operating frequency band.

7. The window glass according to claim 3, characterized in that, The third antenna structure includes a first feeding portion, a first radiation branch, and a third radiation branch. The first radiation branch and the third radiation branch are electrically connected to the first feeding portion. The conducting wire further includes a first extension line, and the first extension line is bent and electrically connected to the equipotential line. Among them, the first radiation branch is used to radiate signals in the third operating frequency band. At least a part of the third radiation branch is disposed opposite to the first extension line, so that the third radiation branch and the equipotential line are coupled to each other, so that the third radiation branch is used to radiate signals in the second operating frequency band.

8. The window glass according to claim 3, wherein, The first antenna structure includes a second feeding portion and a fourth radiation branch. The fourth radiation branch is provided with a plurality of reference lines, and the plurality of reference lines are all electrically connected to the second feeding portion. Among them, the plurality of reference lines are arranged at intervals in sequence.

9. The window glass according to claim 8, characterized in that, The first antenna structure further includes a horizontal branch and a vertical branch. The horizontal branch is electrically connected between the second feeding portion and the vertical branch, so that the vertical branch is fed through the horizontal branch. The plurality of reference lines are connected in parallel to the vertical branch.

10. The window glass according to claim 8, characterized in that, The second antenna structure includes a third feeding portion and a fifth radiation branch. The fifth radiation branch is electrically connected to the third feeding portion. The antenna assembly further includes a second extension line, and the second extension line is electrically connected to one of the reference lines. At least a part of the fifth radiation branch is disposed opposite to at least a part of the second extension line, so that the fifth radiation branch and the first antenna structure are coupled to each other, so that the fifth radiation branch can radiate signals in the second operating frequency band.

11. The window glass according to claim 10, wherein The second antenna structure further includes a sixth radiation branch. The sixth radiation branch is electrically connected to the third feeding portion. Among them, at least a part of the sixth radiation branch is disposed opposite to at least a part of the heating strip, so that the sixth radiation branch and the heating strip are coupled to each other. And / or, the second antenna structure further includes a seventh radiation branch. The fifth radiation branch and the seventh radiation branch are connected in parallel and are both electrically connected to the third feeding portion.

12. The window glass according to claim 1, characterized in that, At least one of the second antenna structure and the third antenna structure is further used to radiate signals in the fourth operating frequency band. Among them, the signal frequency in the fourth operating frequency band is greater than the signal frequency in the third operating frequency band. And / or, the antenna assembly further includes a fourth antenna structure; the fourth antenna structure includes a fourth feeding portion and an eighth radiation branch, the eighth radiation branch is electrically connected to the fourth feeding portion; and the eighth radiation branch is configured to radiate signals in a fourth operating frequency band; wherein, the signal frequency of the fourth operating frequency band is greater than the signal frequency of the third operating frequency band.

13. The window glass according to claim 12, characterized in that, The antenna assembly further includes a plurality of free wires, at least one of the free wires is disposed at intervals between at least two of the first antenna structure, the second antenna structure, and the third antenna structure, and the free wire is collinearly disposed with at least two of at least a part of the first antenna structure, at least a part of the second antenna structure, and at least a part of the third antenna structure.

14. The window glass according to claim 13, characterized in that, The length of the free wire satisfies the following condition: L < 0.1 * k * λ8; where λ8 is the minimum wavelength of the radiation signal corresponding to the fourth operating frequency band, k is the wavelength shortening rate, and L is the length of the free wire.

15. The window glass according to any one of claims 1 to 14, characterized in that, The antenna assembly further includes a fourth antenna structure; the fourth antenna structure is configured to radiate signals in a fourth operating frequency band; wherein, the signal frequency of the fourth operating frequency band is greater than the signal frequency of the third operating frequency band; wherein, The glass body is provided with a first side and a second side opposite to each other along the height direction of the glass body, the defogging heating unit is disposed close to the first side, and the antenna assembly is disposed close to the second side; the first antenna structure and the fourth antenna structure are disposed close to the second side; one of the third antenna structure and the second antenna structure is disposed at intervals between the first antenna structure and the defogging heating unit, and the other is disposed at intervals between the fourth antenna structure and the defogging heating unit; And / or, the vehicle window glass is provided with a third side and a fourth side opposite to each other along the width direction of the vehicle window glass, and both the third side and the fourth side are connected between the first side and the second side; wherein, the first antenna structure is disposed close to the third side, and the fourth antenna structure is disposed close to the fourth side.

16. A vehicle, characterized in that, Comprising a vehicle body and the vehicle window glass according to any one of claims 1 to 15 above, the vehicle window glass is installed on the vehicle body.

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