Antenna device and equipment

Abstract

The invention relates to an antenna device and equipment. The antenna device comprises a dielectric body, a first conductive pattern layer and a second conductive pattern layer. The first conductive pattern layer comprises a first antenna structure, and the first antenna structure is provided with a first radiation branch knot. The second conductive pattern layer and the first conductive pattern layer are located on two different layers of the dielectric body in the thickness direction of the dielectric body respectively, the second conductive pattern layer comprises a first suspension line, and the first suspension line and the first radiation branch knot are at least partially overlapped in the thickness direction to achieve mutual coupling. According to the antenna device, the first suspension line of the second conductive pattern layer and the first radiation branch knot are at least partially overlapped in the thickness direction and are mutually coupled, so that the gain performance of the first working frequency band corresponding to the first radiation branch knot can be improved; in addition, the structure is attractive, the overall layout is compact, a large area is provided for arrangement of the demisting heating unit on the medium body, and the demisting performance can be improved due to the fact that the area of the demisting heating unit is increased.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to an antenna device and equipment. Background Art

[0002] With the rapid development of wireless communications, people have higher and higher requirements for communication quality. Vehicles, including but not limited to automobiles, are means of transportation used by people in daily life. In order to obtain better transmission efficiency and signal transmission quality, antennas as windows for vehicle communications have also become an indispensable part of vehicles. In order to meet the requirements of electromagnetics, aerodynamics and aesthetics, conformal glass antennas are favored by automobile manufacturers for their own advantages. They can conform to the car without destroying the overall design, antenna performance and aesthetics of the car. However, in the conformal glass antenna products in the related technology, in order to achieve product performance indicators, the area occupied is relatively large, which will have a significant impact on the defogging performance of the glass. In addition, in the means of reducing the glass antenna area, it often results in an unsightly layout, affecting the overall aesthetics of the car. Summary of the invention

[0003] Based on this, it is necessary to overcome the defects of the prior art and provide an antenna device and equipment, which can prevent the defogging performance from being affected, while improving the antenna performance and having an overall beautiful appearance.

[0004] An antenna device, comprising:

[0005] Medium body;

[0006] A first conductive pattern layer, wherein the first conductive pattern layer is disposed on the dielectric body, the first conductive pattern layer comprises a first antenna structure, and the first antenna structure comprises a first radiation branch; and

[0007] A second conductive pattern layer, the second conductive pattern layer is arranged on the dielectric body, the second conductive pattern layer and the first conductive pattern layer are respectively located on two different layers of the dielectric body along its thickness direction, the second conductive pattern layer includes a first suspension line, the first suspension line and the first radiation branch are at least partially overlapped along the thickness direction to achieve mutual coupling.

[0008] In one embodiment, the first suspension line at least partially overlaps with the proximal end, middle part or distal end of the first radiation branch along the thickness direction; or, the first suspension line includes three segments that are insulated and isolated in sequence, and the three segments respectively at least partially overlap with the proximal end, middle part and distal end of the first radiation branch along the thickness direction.

[0009] In one embodiment, the length of the overlapping portion between the first suspension line and the first radiation branch along the thickness direction is 30 mm to 120 mm.

[0010] In one embodiment, the first antenna structure further includes a first feeding portion and a second radiating branch, and the first feeding portion is electrically connected to the first radiating branch and the second radiating branch, respectively.

[0011] In one embodiment, the second conductive pattern layer further includes a second antenna structure.

[0012] In one embodiment, a distance between the first conductive pattern layer and the second conductive pattern layer along the thickness direction is 1 mm to 50 mm.

[0013] In one embodiment, the first conductive pattern layer further includes a third antenna structure; and / or the second conductive pattern layer further includes a fourth antenna structure.

[0014] In one embodiment, the radiating branches of the first antenna structure at least partially overlap with the radiating branches of the second antenna structure along the thickness direction to achieve mutual coupling; and / or the radiating branches of the third antenna structure at least partially overlap with the radiating branches of the fourth antenna structure along the thickness direction to achieve mutual coupling.

[0015] In one embodiment, the antenna device further includes a low noise amplifier module and four feed lines connected to the low noise amplifier module; the low noise amplifier module is respectively connected to the first antenna structure, the second antenna structure, the third antenna structure and the fourth antenna structure through each of the feed lines.

[0016] In one embodiment, the antenna device also includes a low noise amplifier module and a first feed line, a second feed line, a third feed line and a fourth feed line connected to the low noise amplifier module; the first conductive pattern layer also includes a fifth antenna structure and a sixth antenna structure, and the second conductive pattern layer also includes a seventh antenna structure and an eighth antenna structure; the first antenna structure and the second antenna structure are arranged correspondingly along the thickness direction and are respectively connected to the first feed line; the third antenna structure and the fourth antenna structure are arranged correspondingly along the thickness direction and are respectively connected to the second feed line; the fifth antenna structure and the seventh antenna structure are arranged correspondingly along the thickness direction and are respectively connected to the third feed line; the sixth antenna structure and the eighth antenna structure are arranged correspondingly along the thickness direction and are respectively connected to the fourth feed line.

[0017] In one of the embodiments, the antenna device also includes a defogger heating unit arranged on the dielectric body; the defogger heating unit is on the same layer as the first conductive pattern layer or the second conductive pattern layer; the defogger heating unit includes two bus bars arranged at intervals, and a plurality of transverse strips electrically connected between the two bus bars and arranged in sequence at intervals.

[0018] A device comprises the antenna device.

[0019] In the above-mentioned antenna device and equipment, the first suspension line of the second conductive pattern layer at least partially overlaps with the first radiation branch in the thickness direction and couples with each other, thereby improving the gain performance of the first radiation branch in the corresponding first working frequency band; in addition, the first suspension line at least partially overlaps with the first radiation branch in the thickness direction, which not only has good aesthetics, but also has a compact overall layout, and rationally utilizes the space of the dielectric body along the thickness direction, which can reduce the area occupied by the entire antenna on the dielectric body, thereby providing a larger area for the arrangement of the defogger heating unit on the dielectric body. Since the area of ​​the defogger heating unit is increased, the defogger performance can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG. 1 is a cross-sectional structural diagram of an antenna device according to an embodiment of the present application.

[0021] FIG. 2 is a structural diagram of a first conductive pattern layer of the first embodiment in the structure shown in FIG. 1 .

[0022] FIG. 3 is a structural diagram of the second conductive pattern layer of the first embodiment in the structure shown in FIG. 1 .

[0023] FIG. 4 is a structural diagram of a second conductive pattern layer according to a second embodiment of the structure shown in FIG. 1 .

[0024] FIG. 5 is a structural diagram of a second conductive pattern layer according to a third embodiment of the structure shown in FIG. 1 .

[0025] FIG. 6 is a structural diagram of a second conductive pattern layer according to a fourth embodiment of the structure shown in FIG. 1 .

[0026] FIG. 7 is a structural diagram of the first conductive pattern layer of the second embodiment in the structure shown in FIG. 1 .

[0027] FIG. 8 is a structural diagram of the second conductive pattern layer of the fifth embodiment in the structure shown in FIG. 1 .

[0028] FIG. 9 is a structural diagram of the first conductive pattern layer of the third embodiment in the structure shown in FIG. 1 .

[0029] FIG. 10 is a structural diagram of a second conductive pattern layer according to a sixth embodiment of the structure shown in FIG. 1 .

[0030] FIG. 11 is a structural diagram of a first conductive pattern layer according to a fourth embodiment of the structure shown in FIG. 1 .

[0031] FIG. 12 is a structural diagram of the second conductive pattern layer of the seventh embodiment in the structure shown in FIG. 1 .

[0032] FIG. 13 is a simulation diagram showing the relationship between the horizontal polarization gain and the frequency when the first radiating branch is set as a DAB band antenna and the first suspension line shown in FIG. 3 is added and the first suspension line is not included.

[0033] FIG. 14 is a simulation diagram showing the vertical polarization gain versus frequency when the first radiating branch is set as a DAB band antenna and the first suspension line shown in FIG. 3 is added and when there is no first suspension line.

[0034] FIG. 15 is a simulation diagram showing the relationship between horizontal polarization gain and frequency when the first radiating branch is set as a TV band antenna and the first suspension line shown in FIG. 3 is added and when there is no first suspension line.

[0035] FIG. 16 is a simulation diagram showing the vertical polarization gain versus frequency when the first radiating branch is set as a TV band antenna and the first suspension line shown in FIG. 3 is added and when there is no first suspension line.

[0036] FIG. 17 is a simulation diagram showing the relationship between the horizontal polarization gain and the frequency when the first radiating branch is set as a TV band antenna and the first suspension line shown in FIG. 4 is added and the first suspension line is not included.

[0037] FIG. 18 is a simulation diagram showing the vertical polarization gain versus frequency when the first radiating branch is set as a TV band antenna and the first suspension line shown in FIG. 4 is added and when there is no first suspension line.

[0038] FIG. 19 is a simulation diagram showing the relationship between the horizontal polarization gain and the frequency when the first radiating branch is set as a TV band antenna and the first suspension line shown in FIG. 5 is added and when there is no first suspension line.

[0039] FIG. 20 is a simulation diagram showing the vertical polarization gain versus frequency when the first radiating branch is set as a TV band antenna and the first suspension line shown in FIG. 5 is added and when there is no first suspension line.

[0040] FIG. 21 is a simulation diagram showing the relationship between horizontal polarization gain and frequency when the first radiating branch is set as a TV band antenna and the first suspension line shown in FIG. 6 is added and when there is no first suspension line.

[0041] FIG. 22 is a simulation diagram showing the vertical polarization gain versus frequency when the first radiating branch is set as a TV band antenna and the first suspension line shown in FIG. 6 is added and when there is no first suspension line.

[0042] 10. dielectric body; 11. first glass plate; 111. first surface; 112. second surface; 12. adhesive layer; 13. second glass plate; 131. third surface; 132. fourth surface; 20. first conductive pattern layer; 21. first antenna structure; 211. first radiation branch; 2111. first section; 2112. second section; 2113. third section; 212. first feeder; 213. second radiation branch; 22. second suspension line; 23. third section Antenna structure; 231, third feeding unit; 24, fifth antenna structure; 25, sixth antenna structure; 30, second conductive pattern layer; 31, first suspension line; 311, segmentation; 32, second antenna structure; 321, second feeding unit; 33, fourth antenna structure; 331, fourth feeding unit; 34, seventh antenna structure; 35, eighth antenna structure; 40, low noise amplifier module; 50, sheet metal; 60, defog heating unit; 61, busbar; 62, transverse strip. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of 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 violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0044] It should be noted that the frequency bands involved in the antenna device in this embodiment mainly include AM: 531KHz-1710KHz, FM: 76MHz-108MHz, DAB: 170MHz-240MHz, and TV: 470MHz-710MHz. The wavelength corresponding to the AM frequency band when transmitted in glass is defined as λ 1 ,λ 1 Set to 50mm-200mm; the wavelength corresponding to the FM band when transmitted in glass is defined as λ 2 ,λ 2 Set to 1000mm-1500mm; the wavelength corresponding to the DAB band when transmitted in glass is defined as λ 3 ,λ 3 Set to 450mm-700mm; the wavelength corresponding to the TV band when transmitted in glass is defined as λ 4 ,λ 4 Set to 150mm-240mm.

[0045] It should be noted that the wavelength of the antenna signal when transmitted in glass is calculated according to the following formula:

[0046] ,

[0047] Where, λ is the wavelength, is the speed at which the antenna signal is transmitted in the glass, f is the frequency, C is the speed of light, is the relative dielectric constant of glass, taking 7.3 as an example (the square root is approximately 2.7), is the relative magnetic permeability of glass, which is generally 1.

[0048] It should be noted that the relative dielectric constant of the glass in the present application is not limited to 7.3; "coupled and connected" means that the two conductive elements are not directly electrically connected, but are spaced apart so that the signal is transmitted between the two conductive elements by coupling.

[0049] Optionally, according to the wave speed formula V (wave speed) = λ (wavelength) * f (frequency), in the same medium, the propagation speed of the wave is the same, and the product of wavelength and frequency remains unchanged, so λ = v / f, and the wavelength is inversely proportional to the frequency, that is, the higher the frequency, the shorter the wavelength. Therefore, by adjusting the electrical length of each radiation branch, the frequency band size can be adjusted accordingly.

[0050] It should be noted that the "suspension" in the suspension line in this embodiment means that there is no direct electrical connection with other radiating oscillators. The main purpose is to improve the symmetry of the overall structure and make the structure more beautiful. Suspension lines can be added in relevant layout areas according to actual needs. Suspension lines are, for example, printed lines formed on the medium body. The shape of the suspension line includes, but is not limited to, one or more combinations of straight lines, broken lines, and curved lines. Among them, the broken line is specifically, for example, an L shape, an F shape, a Z shape, an I shape, and a ring shape. One or more arbitrary combinations, etc., the curved line is specifically, for example, a C shape, and can also be other various shapes set according to actual needs, which are not limited here.

[0051] Referring to FIGS. 1 to 3 , an antenna device provided in one embodiment of the present application includes: a dielectric body 10, a first conductive pattern layer 20, and a second conductive pattern layer 30. The first conductive pattern layer 20 is disposed on the dielectric body 10, and the first conductive pattern layer 20 includes a first antenna structure 21. The first antenna structure 21 is provided with a first radiation branch 211. The second conductive pattern layer 30 is disposed on the dielectric body 10, and the second conductive pattern layer 30 and the first conductive pattern layer 20 are respectively located on two different layers of the dielectric body 10 along the thickness direction thereof, and the second conductive pattern layer 30 includes a first suspension line 31, and the first suspension line 31 and the first radiation branch 211 at least partially overlap along the thickness direction to achieve mutual coupling.

[0052] It should be noted that the thickness direction of the dielectric body 10 refers to a direction perpendicular to the layer of the dielectric body 10 .

[0053] In the above-mentioned antenna device, the first suspension line 31 of the second conductive pattern layer 30 at least partially overlaps with the first radiation branch 211 in the thickness direction and couples with each other, thereby improving the gain performance of the first radiation branch 211 in the corresponding first working frequency band; in addition, the first suspension line 31 at least partially overlaps with the first radiation branch 211 in the thickness direction, and more specifically, when they completely overlap, not only the aesthetics is better, but also the overall layout is compact, and the space of the dielectric body 10 along the thickness direction is reasonably utilized, which can reduce the area occupied by the antenna as a whole on the dielectric body 10, thereby providing a larger area for the arrangement of the defogger heating unit 60 on the dielectric body 10. Since the area of ​​the defogger heating unit 60 is increased, the defogger performance can be improved.

[0054] Among them, the first conductive pattern layer 20 and the second conductive pattern layer 30 each include but are not limited to using a conductive medium such as silver paste and being baked on different levels of the dielectric body 10 in a vertical or horizontal posture, for example. By flexibly adjusting the layout and shape of the first conductive pattern layer 20 and the second conductive pattern layer 30 at different levels, the area occupied by the antenna can be reduced, and various aspects of the antenna performance, such as gain, bandwidth, isolation and radiation direction (receiving direction), can be adjusted.

[0055] In one embodiment, the dielectric body 10 can be set as a single-layer glass plate, and the first conductive pattern layer 20 and the second conductive pattern layer 30 are respectively located on two opposite surfaces of the single-layer glass plate. Of course, the dielectric body 10 can also be set as a laminated glass, as shown in FIG1 , the laminated glass includes a first glass plate 11, an adhesive layer 12 and a second glass plate 13 which are stacked and connected in sequence. The first glass plate 11 has a first surface 111 and a second surface 112 which are opposite to each other, and the second glass plate 13 has a third surface 131 and a fourth surface 132 which are opposite to each other, and the second surface 112 is arranged opposite to the third surface 131. The first surface 111 faces the external environment, and the fourth surface 132 faces the internal environment. Among them, the adhesive layer 12 can be selected from polyvinyl butyral (PVB), polycarbonate (PC), sound insulation PVB, shading tape PVB, heat control PVB, ethylene vinyl acetate (EVA), thermoplastic polyurethane (TPU), ionomer, thermoplastic material, polybutylene terephthalate (PBT), polyethylene vinyl acetate (PET), polyethylene naphthalate (PEN), polyvinyl chloride (PVC), polyvinyl fluoride (PVF), polyacrylate (PA), polymethyl methacrylate (PMMA), polyurethane (PUR) and combinations thereof. In this embodiment, the dielectric body 10 is specifically, for example, laminated glass, which has stronger performance than a single-layer glass plate.

[0056] In some embodiments, the first conductive pattern layer 20 and the second conductive pattern layer 30 are respectively arranged on the second surface 112, the third surface 131, the fourth surface 132 and the adhesive layer 12. As an example, the first conductive pattern layer 20 is arranged on the second surface 112, and the second conductive pattern layer 30 is correspondingly arranged on the adhesive layer 12, the third surface 131 or the fourth surface 132; as another example, the first conductive pattern layer 20 is arranged on the third surface 131, and the second conductive pattern layer 30 is correspondingly arranged on the second surface 112, the adhesive layer 12 or the fourth surface 132; as yet another example, the first conductive pattern layer 20 is arranged on the fourth surface 132, and the second conductive pattern layer 30 is correspondingly arranged on the second surface 112, the adhesive layer 12 or the third surface 131.

[0057] Referring to FIG. 2 , in some embodiments, the first radiation branch 211 includes but is 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, by flexibly adjusting and setting the length of the first radiation branch 211, it is possible to work in various frequency bands. As an example, the length of the first radiation branch 211 is, for example, 1 / 4λ. 3 To 3 / 4λ 3 , the operating frequency band of the first radiation branch 211 is 170MHz-240MHz, that is, a DAB frequency band antenna; as another example, the length of the first radiation branch 211 is, for example, 1 / 4λ 4 To 3 / 4λ 4 The working frequency band of the first radiation branch 211 is 470MHz-710MHz, that is, a TV band antenna.

[0058] Please refer to Figures 2, 3, 13 to 16. Figure 13 is a simulation diagram of horizontal polarization gain versus frequency when the first suspension line 31 shown in Figure 3 is added and when there is no first suspension line 31 when the first radiating branch 211 is set as a DAB frequency band antenna. Figure 14 is a simulation diagram of vertical polarization gain versus frequency when the first suspension line 31 shown in Figure 3 is added and when there is no first suspension line 31 when the first radiating branch 211 is set as a DAB frequency band antenna. It can be seen from Figures 13 and 14 that adding the first suspension line 31 will have a significant impact on the gain performance of the DAB frequency band antenna. In addition, Figure 15 is a simulation graph of the horizontal polarization gain versus frequency when the first suspension line 31 shown in Figure 3 is added and when there is no first suspension line 31 when the first radiating branch 211 is set as a TV band antenna. Figure 16 is a simulation graph of the vertical polarization gain versus frequency when the first suspension line 31 shown in Figure 3 is added and when there is no first suspension line 31 when the first radiating branch 211 is set as a TV band antenna. It can be seen from Figures 15 and 16 that adding the first suspension line 31 will have a significant impact on the gain performance of the TV band antenna.

[0059] In addition, by comparing FIG. 13 to FIG. 16 , it can be seen that the improvement degree of the gain and bandwidth of the TV band antenna with the addition of the first suspension line 31 and without the first suspension line 31 is significantly greater than the improvement degree of the gain and bandwidth of the DAB band antenna.

[0060] In some embodiments, the overlap between the first suspension line 31 and the first radiation branch 211 in the thickness direction refers to the alignment of the first suspension line 31 and the first radiation branch 211 in the thickness direction, and a deviation value of, for example, less than 0.1 mm is allowed due to process errors. In addition, the shape and length of the first suspension line 31 can be consistent with the shape and length of the first radiation branch 211, so that each part of the first suspension line 31 overlaps with each part of the first radiation branch 211 in the thickness direction, that is, the two completely overlap; or they can be different from each other, so that a part of the first suspension line 31 overlaps with the first radiation branch 211, or the entire first suspension line 31 overlaps only a part of the first radiation branch 211, that is, partially overlap.

[0061] Please refer to FIG. 3 , in some embodiments, the first suspension line 31 includes three segments 311 which are sequentially insulated and isolated. The three segments 311 correspond to at least partially overlap with the proximal end, the middle part and the distal end of the first radiation branch 211 along the thickness direction. In this way, the gain performance of each frequency band of the TV band antenna is significantly improved.

[0062] It should be noted that the proximal end of the first radiating branch 211 refers to an end of the first radiating branch 211 close to the first feeding part 212 of the first antenna structure 21, that is, the first section 2111 as shown in Figure 2; the distal end of the first radiating branch 211 refers to an end of the first radiating branch 211 away from the first feeding part 212 of the first antenna structure 21, that is, the third section 2113 as shown in Figure 2; the middle part of the first radiating branch 211 refers to the part between the opposite ends of the first radiating branch 211, that is, the second section 2112 as shown in Figure 2.

[0063] It should be noted that the lengths, sizes and shapes of the three segments 311 are independently set and adjusted according to actual needs, and can be consistent or different, which is not limited here. The shape of each segment 311 includes but is not limited to one or more combinations of a straight line, an L shape, an F shape, an I shape, a C shape and a ring shape.

[0064] The length of the overlapping portion between each segment 311 and the first radiation branch 211 includes but is not limited to 30 mm to 120 mm, for example, 30 mm, 40 mm, 60 mm, 80 mm, 100 mm, 110 mm or 120 mm.

[0065] Please refer to FIG. 2, FIG. 4, FIG. 17 and FIG. 18. In some embodiments, the first suspension line 31 and the proximal end of the first radiation branch 211 at least partially overlap in the thickness direction, thereby achieving mutual coupling. In other words, the first suspension line 31 shown in FIG. 4, compared with the first suspension line 31 shown in FIG. 3, for example, omits the middle segment 311 and the distal segment 311 in the suspension line shown in FIG. 3. The dotted line in FIG. 4 represents the omitted suspension line structure. In this way, the gain performance of the high frequency band of the TV band antenna is significantly improved, regardless of horizontal polarization-HP and vertical polarization-VP, as shown in FIG. 17 and FIG. 18.

[0066] The length of the overlapping portion between the first suspension line 31 and the proximal end of the first radiation branch 211 includes but is not limited to 30 mm to 120 mm, specifically 30 mm, 40 mm, 60 mm, 80 mm, 100 mm, 110 mm or 120 mm. In this way, the coupling amount between the two is large, so that the gain performance of the high frequency band of the TV band antenna can be significantly improved.

[0067] Please refer to FIG. 2, FIG. 5, FIG. 19 and FIG. 20. In some embodiments, the first suspension line 31 and the middle part of the first radiation branch 211 at least partially overlap in the thickness direction, so as to achieve mutual coupling. In other words, the first suspension line 31 shown in FIG. 5, compared with the first suspension line 31 shown in FIG. 3, for example, omits the proximal segment 311 and the distal segment 311 in the suspension line shown in FIG. 3, and retains the middle segment 311 shown in FIG. 3. The dotted line in FIG. 5 represents the omitted segment 311. In this way, the gain performance of the intermediate frequency band of the TV band antenna is significantly improved, regardless of horizontal polarization-HP and vertical polarization-VP, as shown in FIG. 19 and FIG. 20.

[0068] The length of the overlapping portion between the first suspension line 31 and the first radiation branch 211 includes but is not limited to 30 mm to 120 mm, specifically 30 mm, 40 mm, 60 mm, 80 mm, 100 mm, 110 mm or 120 mm. In this way, the coupling amount between the two is large, so that the gain performance of the intermediate frequency band of the TV band antenna can be significantly improved.

[0069] Please refer to FIG. 2, FIG. 6, FIG. 21 and FIG. 22. In some embodiments, the first suspension line 31 and the distal end of the first radiation branch 211 at least partially overlap in the thickness direction, thereby achieving mutual coupling. In other words, the first suspension line 31 shown in FIG. 6, compared with the first suspension line 31 shown in FIG. 3, for example, omits the proximal segment 311 and the middle segment 311 in the suspension line shown in FIG. 3. The dotted line in FIG. 6 represents the omitted suspension line structure. In this way, the gain performance of the low-frequency band of the TV band antenna is significantly improved, regardless of horizontal polarization-HP and vertical polarization-VP, as shown in FIG. 21 and FIG. 22.

[0070] The length of the overlapping portion of the distal ends of the first suspension line 31 and the first radiation branch 211 includes but is not limited to 30 mm to 120 mm, specifically 30 mm, 40 mm, 60 mm, 80 mm, 100 mm, 110 mm or 120 mm. In this way, the coupling amount between the two is large, so that the gain performance of the low frequency band of the TV band antenna can be significantly improved.

[0071] Please refer to Figure 2. In one embodiment, the first antenna structure 21 also includes a first feeding portion 212 and a second radiating branch 213. The first feeding portion 212 is electrically connected to the first radiating branch 211 and the second radiating branch 213, respectively. In this way, the signal fed into the first feeding portion 212 can be transmitted to the first radiating branch 211 and the second radiating branch 213, respectively, so that not only the transmission and reception of the antenna signal of the first working frequency band can be realized, but also the transmission and reception of the antenna signal of the second working frequency band corresponding to the second radiating branch 213 can be realized, thereby enhancing the antenna performance. Among them, the second working frequency band corresponding to the second radiating branch 213 can be the same as the first working frequency band corresponding to the first radiating branch 211, or it can be different, which is not limited here.

[0072] In some embodiments, the second operating frequency band of the second radiation branch 213 can be one or more combinations of AM frequency band, FM frequency band, DAB frequency band and TV frequency band, which are not limited here. In addition, by adjusting the shape and size of the second radiation branch 213, the second operating frequency band can be adjusted.

[0073] Please refer to Fig. 2. In some embodiments, the first conductive pattern layer 20 further includes one or more second suspension lines 22. Specifically, the second suspension lines 22 are shown in 3a, 3b, 3c and 3d in Fig. 2, for example. The second suspension lines 22 are mainly provided to improve the symmetry of the overall structure and make the structure more beautiful. The second suspension lines 22 can be added to the relevant arrangement areas of the first conductive pattern layer 20 according to actual needs.

[0074] Please refer to Figures 7 and 8. In one embodiment, the second conductive pattern layer 30 further includes a second antenna structure 32. The first antenna structure 21 and the second antenna structure 32 are respectively located on two different levels of the dielectric body 10, that is, by planning different antenna structures on two different levels of the dielectric body 10, the vertical space of the dielectric body 10 is effectively utilized, and the occupied area of ​​the antenna structure on the dielectric body 10 is reduced, thereby providing a larger area for the arrangement of the demisting heating unit 60 on the dielectric body 10. Since the area of ​​the demisting heating unit 60 is increased, the demisting performance can be improved.

[0075] Specifically, similar to the first suspension line 31 and the first radiation branch 211 being coupled to each other to improve the gain performance of the first working frequency band, the first conductive pattern layer 20 includes, for example, a suspension line that is overlapped with the radiation branch of the second antenna structure 32 to achieve mutual coupling, thereby also improving the antenna gain performance. In addition, since the suspension line is provided, it is filled according to actual needs, thereby improving the appearance of the product.

[0076] In some embodiments, similar to the first antenna structure 21, the number of radiating branches of the second antenna structure 32 includes but is not limited to one, two, three or more. When the number of radiating branches is multiple, the operating frequency bands of each radiating branch can be the same or different, specifically, for example, one or more combinations of AM band, FM band, DAB band and TV band, which are not limited here.

[0077] The single-layer glass printed antenna in the related art needs to use a larger antenna area or a coupling structure between parallel distributed silver paste lines to meet the performance requirements of the antenna. The former sacrifices the defogging performance of the heating line, and the latter affects the overall aesthetics. In this embodiment, by laying out antennas on different layers on some laminated glass, the vertical space of the dielectric body 10 is effectively utilized while ensuring the antenna performance, thereby reducing the occupied area on the glass surface. Referring to Figures 7 and 8, in some specific embodiments, the first conductive pattern layer 20 includes not only the first antenna structure 21, but also the third antenna structure 23. In addition, the second conductive pattern layer 30 includes not only the second antenna structure 32, but also the fourth antenna structure 33. In this way, as the number of antenna structures increases, each antenna structure can operate in the same or different frequency bands, so that the antenna performance is improved. In addition, the overall layout is compact and the space along the thickness direction of the dielectric body 10 is reasonably utilized, which can reduce the area occupied by the antenna as a whole on the dielectric body 10, thereby providing a larger area for the arrangement of the defogger heating unit 60 on the dielectric body 10. Since the area of ​​the defogger heating unit 60 is increased, the defogger performance can be improved.

[0078] Please refer to FIG. 1 , FIG. 7 and FIG. 8 . In one embodiment, the antenna device further includes a low-noise amplifier module 40 (Low-noise Amplifier, LNA) and four feeders connected to the low-noise amplifier module 40. The low-noise amplifier module is provided at a portion of the sheet metal 50 facing the dielectric body 10, and the low-noise amplifier module is connected to the first antenna structure 21, the second antenna structure 32, the third antenna structure 23 and the fourth antenna structure 33 through various feeders. Specifically, the first antenna structure 21 is provided with a first feeding portion 212, the second antenna structure 32 is provided with a second feeding portion 321, the third antenna structure 23 is provided with a third feeding portion 231, and the fourth antenna structure 33 is provided with a fourth feeding portion 331. The low-noise amplifier module is electrically connected to the first feeding portion 212, the second feeding portion 321, the third feeding portion 231 and the fourth feeding portion 331 through various feeders.

[0079] In some embodiments, the spacing between the first conductive pattern layer 20 and the second conductive pattern layer 30 along the thickness direction includes, but is not limited to, 1 mm to 50 mm, specifically, 1 mm, 3 mm, 5 mm, 7 mm, 15 mm, 30 mm or 50 mm. In this way, the spacing is more appropriate, so that the first suspension line 31 and the first radiation branch 211 have a better coupling effect.

[0080] The thickness L of the first glass plate 11 and the second glass plate 13 are independently set, and can be the same or different. The thickness L includes, but is not limited to, 1 mm to 50 mm, and specifically, 1 mm, 3 mm, 5 mm, 7 mm, 15 mm, 30 mm, or 50 mm, etc., and can be flexibly adjusted and set according to actual needs. In addition, the thickness H of the adhesive layer 12 includes, but is not limited to, 0.2 mm to 10 mm, and specifically, 0.2 mm, 0.36 mm, 0.38 mm, 0.5 mm, 0.76 mm, 1 mm, 1.2 mm, 3 mm, 7 mm, or 10 mm.

[0081] Please refer to Figures 9 and 10. In one embodiment, the radiating branches of the first antenna structure 21 and the radiating branches of the second antenna structure 32 at least partially overlap in the thickness direction to achieve mutual coupling. The overlapping portion of the two antenna structures in the thickness direction can be specifically referred to the bold lines in Figures 9 and 10. The radiating branches of the third antenna structure 23 and the radiating branches of the fourth antenna structure 33 at least partially overlap in the thickness direction to achieve mutual coupling. The overlapping portion of the two antenna structures in the thickness direction can be specifically referred to the bold lines in Figures 9 and 10. In this way, at least two antenna structures are arranged on two different layers, and through the mutual coupling of antenna structures of different frequency bands between layers, the antenna bandwidth can be expanded, effectively improving the performance of the antenna structure.

[0082] Among them, by adjusting the length and shape of the radiating branches of the overlapping parts of the two antenna structures along the thickness direction, the shape can be single-line, C-shaped, L-shaped, ring-shaped, etc.; or, adjusting the spacing between the two antenna structures along the thickness direction, for example, adjusting the thickness of the glass plate or the thickness of the adhesive layer 12, to flexibly adjust and control the coupling degree between the two antenna structures, thereby achieving the purpose of adjusting the antenna performance.

[0083] Please refer to FIG. 1 , FIG. 11 and FIG. 12 . On the basis of the above-mentioned embodiment, the antenna device further includes a low noise amplifier module 40 and a first feeder, a second feeder, a third feeder and a fourth feeder connected to the low noise amplifier module 40. The first conductive pattern layer 20 further includes a fifth antenna structure 24 and a sixth antenna structure 25. The second conductive pattern layer 30 further includes a seventh antenna structure 34 and an eighth antenna structure 35. The first antenna structure 21 and the second antenna structure 32 are arranged in a corresponding position along the thickness direction and are respectively connected to the first feeder, so that the first antenna structure 21 and the second antenna structure 32 are combined to form an antenna structure. In other words, an antenna structure is divided into a first antenna structure 21 and a second antenna structure 32, and they are respectively arranged on two different layers of the dielectric body 10. Among them, the first feeder is provided with two connectors, and the two connectors of the first feeder are respectively electrically connected to the feeding part of the first antenna structure 21 and the feeding part of the second antenna structure 32.

[0084] Similarly, the third antenna structure 23 and the fourth antenna structure 33 are arranged correspondingly along the thickness direction and are respectively connected to the second feeder, so that the third antenna structure 23 and the fourth antenna structure 33 are combined to form an antenna structure. In other words, the antenna structure is divided into the third antenna structure 23 and the fourth antenna structure 33, and they are respectively arranged on two different layers of the dielectric body 10. Among them, the second feeder is provided with two connectors, and the two connectors of the second feeder are respectively electrically connected to the feeding part of the third antenna structure 23 and the feeding part of the fourth antenna structure 33.

[0085] In addition, the fifth antenna structure 24 and the seventh antenna structure 34 are arranged in a corresponding position along the thickness direction and are respectively connected to the third feeder, so that the fifth antenna structure 24 and the seventh antenna structure 34 are combined to form an antenna structure. In other words, one antenna structure is divided into the fifth antenna structure 24 and the seventh antenna structure 34, and they are respectively arranged on two different layers of the dielectric body 10. Among them, the third feeder is provided with two connectors, and the two connectors of the third feeder are respectively electrically connected to the feeding part of the fifth antenna structure 24 and the feeding part of the seventh antenna structure 34. In addition, the sixth antenna structure 25 and the eighth antenna structure 35 are arranged in a corresponding position along the thickness direction and are respectively connected to the fourth feeder, so that the sixth antenna structure 25 and the eighth antenna structure 35 are combined to form an antenna structure. In other words, one antenna structure is divided into the sixth antenna structure 25 and the eighth antenna structure 35, and they are respectively arranged on two different layers of the dielectric body 10. Among them, the fourth feeder is provided with two connectors, and the two connectors of the fourth feeder are respectively electrically connected to the feeding part of the sixth antenna structure 25 and the feeding part of the eighth antenna structure 35.

[0086] It can be seen that by dividing the same antenna structure into two parts and arranging them on two different layers of the dielectric body 10, the area occupied by each antenna structure on the glass surface can be reduced, thereby increasing the expandability of the antenna.

[0087] Referring to FIG. 3 , in one embodiment, the antenna device further includes a defogger heating unit 60 disposed on the dielectric body 10. The defogger heating unit 60 is in the same layer as the first conductive pattern layer 20 or the second conductive pattern layer 30. The defogger heating unit 60 includes two busbars 61 disposed at intervals, and a plurality of transverse bars 62 electrically connected between the two busbars 61 and disposed at intervals in sequence. Thus, when the two busbars 61 are respectively connected to the positive and negative poles of the power supply, the transverse bars 62 will generate heat to play a defogger role.

[0088] In one embodiment, the defog heating unit 60 also overlaps with the first antenna structure 21 or the second antenna structure 32 in the thickness direction to achieve coupling connection. Thus, through the analysis of the simulation diagram, it can be seen that the overall gain of the FM band antenna is effectively improved; the overall gain of the DAB band antenna is slightly improved, and the gain high point is shifted to the low frequency; the overall gain of the TV band antenna is slightly improved, and the high frequency part is significantly improved.

[0089] Please refer to FIG. 1 to FIG. 3 . In one embodiment, a device includes the antenna device of any one of the above embodiments.

[0090] In the above-mentioned device, the first suspension line 31 of the second conductive pattern layer 30 at least partially overlaps with the first radiation branch 211 in the thickness direction and couples with each other, thereby improving the gain performance of the first radiation branch 211 in the corresponding first working frequency band; in addition, the first suspension line 31 at least partially overlaps with the first radiation branch 211 in the thickness direction, which not only has good aesthetics, but also has a compact overall layout, and rationally utilizes the space of the dielectric body 10 along the thickness direction, which can reduce the area occupied by the antenna as a whole on the dielectric body 10, thereby providing a larger area for the arrangement of the defogger heating unit 60 on the dielectric body 10. Since the area of ​​the defogger heating unit 60 is increased, the defogger performance can be improved.

[0091] In one embodiment, the device includes but is not limited to any one or a combination of vehicle window glass, display cabinets, building window curtain walls, cars, ships, vehicles, human-computer interaction, electrical appliances, and information kiosks. In this embodiment, the device is specifically a vehicle window glass, and the vehicle window glass includes but is not limited to a front windshield, a rear windshield, a corner window, a skylight, left and right side windows, etc.

[0092] In one embodiment, the vehicle includes but is not limited to being set as a car, a jeep, a public transport, a bus, a truck, an airplane, a train, a taxi, a coach, etc. The vehicle includes the glass antenna of any of the above embodiments, and also includes a body, and the glass antenna is connected to the body. When the vehicle is a car as an example, the dielectric body 1010 is but is not limited to being on the front windshield, the rear windshield, the corner window, the sunroof, the left and right side windows, etc.

[0093] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0094] In this application, unless otherwise clearly specified and limited, if the terms "connected", "connection", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0095] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An antenna device, characterized in that: The antenna device comprises: Medium body; A first conductive pattern layer, wherein the first conductive pattern layer is disposed on the dielectric body, the first conductive pattern layer comprises a first antenna structure, and the first antenna structure comprises a first radiation branch; and A second conductive pattern layer, the second conductive pattern layer is arranged on the dielectric body, the second conductive pattern layer and the first conductive pattern layer are respectively located on two different layers of the dielectric body along its thickness direction, the second conductive pattern layer includes a first suspension line, the first suspension line and the first radiation branch are at least partially overlapped along the thickness direction to achieve mutual coupling.

2. The antenna device according to claim 1, characterized in that The first suspension line at least partially overlaps with the proximal end, middle part or distal end of the first radiation branch along the thickness direction; or, the first suspension line includes three segments which are insulated and isolated in sequence, and the three segments respectively overlap with the proximal end, middle part and distal end of the first radiation branch along the thickness direction.

3. The antenna device according to claim 1, characterized in that: The length of the overlapping portion between the first suspension line and the first radiation branch along the thickness direction is 30 mm to 120 mm.

4. The antenna device according to claim 1, characterized in that: The first antenna structure further includes a first feeding portion and a second radiating branch. The first feeding portion is electrically connected to the first radiating branch and the second radiating branch respectively.

5. The antenna device according to claim 1, characterized in that: The second conductive pattern layer also includes a second antenna structure.

6. The antenna device according to any one of claims 1 to 5, characterized in that: The distance between the first conductive pattern layer and the second conductive pattern layer along the thickness direction is 1 mm to 50 mm.

7. The antenna device according to claim 5, characterized in that: The first conductive pattern layer further includes a third antenna structure; and / or the second conductive pattern layer further includes a fourth antenna structure.

8. The antenna device according to claim 7, characterized in that: The radiating branches of the first antenna structure at least partially overlap with the radiating branches of the second antenna structure along the thickness direction to achieve mutual coupling; and / or the radiating branches of the third antenna structure at least partially overlap with the radiating branches of the fourth antenna structure along the thickness direction to achieve mutual coupling.

9. The antenna device according to claim 7, characterized in that: The antenna device also includes a low noise amplifier module and four feeders connected to the low noise amplifier module; the low noise amplifier module is connected to the first antenna structure, the second antenna structure, the third antenna structure and the fourth antenna structure respectively through the feeders.

10. The antenna device according to claim 7, characterized in that: The antenna device also includes a low noise amplifier module and a first feed line, a second feed line, a third feed line and a fourth feed line connected to the low noise amplifier module; the first conductive pattern layer also includes a fifth antenna structure and a sixth antenna structure, and the second conductive pattern layer also includes a seventh antenna structure and an eighth antenna structure; the first antenna structure and the second antenna structure are arranged correspondingly along the thickness direction and are respectively connected to the first feed line; the third antenna structure and the fourth antenna structure are arranged correspondingly along the thickness direction and are respectively connected to the second feed line; the fifth antenna structure and the seventh antenna structure are arranged correspondingly along the thickness direction and are respectively connected to the third feed line; the sixth antenna structure and the eighth antenna structure are arranged correspondingly along the thickness direction and are respectively connected to the fourth feed line.

11. The antenna device according to any one of claims 1 to 5, characterized in that: The antenna device also includes a defogger heating unit arranged on the dielectric body; the defogger heating unit is in the same layer as the first conductive pattern layer or the second conductive pattern layer; the defogger heating unit includes two bus bars arranged at intervals, and a plurality of transverse strips electrically connected between the two bus bars and arranged in sequence at intervals.

12. A device, characterized in that: The device comprises the antenna arrangement according to any one of claims 1 to 11.

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