Transparent antenna

Abstract

The invention discloses a transparent antenna. The transparent antenna comprises a transparent dielectric substrate, a plurality of antenna conductive layers, a feed-in network layer and a plurality of grounding conductive layers. The plurality of antenna conductive layers are arranged on the first surface of the transparent dielectric substrate. The feed-in network layer is arranged on the first surface of the transparent dielectric substrate and is connected to the antenna conductive layer. The antenna conductive layer, the feed-in network layer and the grounding conductive layer are of a grid-shaped structure. Corresponding antenna conductive layers and grounding conductive layers form a plurality of antenna units. The antenna conducting layers of the antenna units are not completely the same; or the grounding conductive layers of the antenna units are not completely the same.

Description

Technical Field

[0001] The invention relates to a transparent antenna. Background Art

[0002] Traditional antennas do not have light penetration, so when used in building windows, vehicle sunroofs, vehicle side windows and other related places, they will encounter problems such as obstructed vision and abruptness with the environment. When dual-band antennas are required, the number of antennas will increase a lot, and the application in glass windows, vehicle sunroofs, vehicle side windows and other related places will face higher challenges.

[0003] Therefore, the industry needs to develop a dual-band or triple-band antenna with good penetration and good radiation, so as to expand multi-band antennas to applications such as buildings and vehicles. Summary of the invention

[0004] The present invention relates to a transparent antenna, which has a grid structure and a dual-frequency antenna design, so that the antenna can not only present high penetration, but also have good multi-frequency radiation efficiency.

[0005] According to one aspect of the present invention, a transparent antenna is provided. The transparent antenna comprises a transparent dielectric substrate, a plurality of antenna conductive layers, a feed network layer and a plurality of ground conductive layers. The plurality of antenna conductive layers are arranged on the first surface of the transparent dielectric substrate. The feed network layer is arranged on the first surface of the transparent dielectric substrate and connected to the antenna conductive layer. The antenna conductive layer, the feed network layer and the ground conductive layer are a grid structure. The corresponding antenna conductive layers and the ground conductive layers form a plurality of antenna units. The antenna conductive layers of these antenna units are not completely the same; or the ground conductive layers of these antenna units are not completely the same.

[0006] According to another aspect of the present invention, a transparent antenna is provided. The transparent antenna comprises a transparent dielectric substrate, a plurality of antenna conductive layers, a feed network layer and a plurality of ground conductive layers. The antenna conductive layer is disposed on the first surface of the transparent dielectric substrate. The feed network layer is disposed on the first surface of the transparent dielectric substrate and is connected to the antenna conductive layer. The antenna conductive layer, the feed network layer and the ground conductive layer are a grid structure. The corresponding antenna conductive layers and the ground conductive layers form a plurality of antenna units. Two adjacent antenna units have the same frequency band. The distance between these antenna units having the same frequency band is between 1 / 2 and 1 dielectric wavelength.

[0007] According to another aspect of the present invention, a transparent antenna is provided. The transparent antenna comprises a transparent dielectric substrate, a plurality of antenna conductive layers, a feed network layer and a plurality of ground conductive layers. The antenna conductive layer is disposed on the first surface of the transparent dielectric substrate. The feed network layer is disposed on the first surface of the transparent dielectric substrate and is connected to the antenna conductive layer. The antenna conductive layer, the feed network layer and the ground conductive layer are a grid structure. The corresponding antenna conductive layers and the ground conductive layers form a plurality of antenna units. Each antenna unit has at least one frequency band, and the frequency bands of these antenna conductive layers are not completely the same.

[0008] In order to better understand the above and other aspects of the present invention, embodiments are given below and described in detail with reference to the accompanying drawings: BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1A A top view of a transparent antenna according to an embodiment of the present invention;

[0010] Figure 1B For the present invention Figure 1A A side view of a transparent antenna;

[0011] Figure 1C For the present invention Figure 1A A bottom view of a transparent antenna;

[0012] Figure 1D For the present invention Figure 1A A grid structure of transparent antennas;

[0013] Figure 2A is a top view of a transparent antenna according to another embodiment of the present invention;

[0014] Figure 2B For the present invention Figure 2A Return loss curve of the transparent antenna;

[0015] Figure 3A is a top view of a transparent antenna according to another embodiment of the present invention;

[0016] Figure 3B For the present invention Figure 3A Return loss curve of the transparent antenna;

[0017] Figure 4A is a top view of a transparent antenna according to another embodiment of the present invention;

[0018] Figure 4B For the present invention Figure 4A Return loss curve of the transparent antenna;

[0019] Figure 5A is a top view of a transparent antenna according to another embodiment of the present invention;

[0020] Figure 5BFor the present invention Figure 5A A side view of a transparent antenna;

[0021] Figure 5C For the present invention Figure 5A A bottom view of a transparent antenna;

[0022] Figure 5D For the present invention Figure 5A A grid structure of transparent antennas;

[0023] Fig. 6A is a top view of a transparent antenna according to another embodiment of the present invention;

[0024] Figure 6B For the present invention Fig. 6A A side view of a transparent antenna;

[0025] Figure 6C For the present invention Fig. 6A A bottom view of a transparent antenna;

[0026] Fig.6D For the present invention Fig. 6A A grid structure of transparent antennas;

[0027] Fig. 7A is a top view of a transparent antenna according to another embodiment of the present invention;

[0028] Figure 7B For the present invention Fig. 7A A side view of a transparent antenna;

[0029] Figure 7C For the present invention Fig. 7A A bottom view of a transparent antenna;

[0030] Fig.7D For the present invention Fig. 7A A grid structure of transparent antennas;

[0031] Fig. 8A is a top view of a transparent antenna according to another embodiment of the present invention;

[0032] Figure 8B For the present invention Fig. 8A A side view of a transparent antenna;

[0033] Figure 8C For the present invention Fig. 8A A bottom view of a transparent antenna;

[0034] Fig.8D For the present invention Fig. 8A A grid structure of transparent antennas;

[0035] Fig.9A is a top view of a transparent antenna according to another embodiment of the present invention;

[0036] Fig. 9B For the present invention Fig.9A A side view of a transparent antenna;

[0037] Fig. 9C For the present invention Fig.9A A bottom view of a transparent antenna;

[0038] Fig.9D For the present invention Fig.9A A grid structure of transparent antennas;

[0039] Fig. 10A is a top view of a transparent antenna according to another embodiment of the present invention;

[0040] Fig. 10B For the present invention Fig. 10A A side view of a transparent antenna;

[0041] Fig. 10C For the present invention Fig. 10A A bottom view of a transparent antenna;

[0042] Fig. 10D For the present invention Fig. 10A A grid structure of transparent antennas;

[0043] Fig.11A is a top view of a transparent antenna according to another embodiment of the present invention;

[0044] Fig. 11B For the present invention Fig.11A A side view of a transparent antenna;

[0045] Fig. 11C For the present invention Fig.11A A bottom view of a transparent antenna;

[0046] Fig.11D For the present invention Fig.11A A grid structure of transparent antennas;

[0047] Figures 12A to 12C Various designs of the main grid lines GD are shown.

[0048] Wherein, the reference numerals are:

[0049] 100,200,300,400,500,600,700,800,900,900',900": transparent antenna;

[0050] 110, 210, 310, 410, 510, 610, 710, 810: transparent dielectric substrate;

[0051] 110a: first surface;

[0052] 110b: second surface;

[0053] 121,122,221,222,321,322,421,422,521,522,523,524,621,622,623,624,721,722,821,822,921,922,921',921": antenna conductive layer;

[0054] 130,230,330,430,530,630,730,830: feed into the network layer;

[0055] 141,142,241,242,341,342,441,442,541,542,543,544,641,642,643,644,741,742,841,842,941,941',942,942": ground conductive layer;

[0056] 742h, 841h, 842h: hollowed out area;

[0057] 751,851: conductive through hole;

[0058] 761,861,862: CPW transmission line structure;

[0059] AT11, AT12, AT21, AT22, AT31, AT32, AT41, AT42, AT51, AT52, AT53, AT54, AT61, AT62, AT63, AT64, AT71, AT72, AT81, AT82: antenna unit;

[0060] 141S, 241S, 441S, 442S, 941S, 941S': opening;

[0061] CV9, CV9', CV9”: return loss curves;

[0062] D1: spacing;

[0063] D120, D520, D720, D820, D920: distance;

[0064] GD: main grid line;

[0065] GDS: subgrid lines;

[0066] HLi: through hole;

[0067] L121, L122, L521, L522, L721, L722, L821, L822: center line;

[0068] MS: Grid-like structure;

[0069] N1a, N1b, N2a, N2b, N2c, N3a, N3b, N41, N4a, N4b, N5a, N5b, N5c, N6a, N6b, N6c, N6d, N78, N7a, N7b, N7c, N8a, N8b, N8c, N8d: frequency band;

[0070] W1: Line width. DETAILED DESCRIPTION

[0071] The technical terms in this specification refer to the customary terms in the technical field. If some terms are explained or defined in this specification, the interpretation of these terms shall be based on the explanation or definition in this specification. Each embodiment of the present invention has one or more technical features. Under the premise of possible implementation, a person with ordinary knowledge in the technical field can selectively implement some or all of the technical features in any embodiment, or selectively combine some or all of the technical features in these embodiments.

[0072] Please refer to Figures 1A to 1D , Figure 1A FIG. 1 is a top view of a transparent antenna 100 according to an embodiment of the present invention. Figure 1B for Figure 1A A side view of the transparent antenna 100, Figure 1C for Figure 1A A bottom view of the transparent antenna 100, Figure 1D For the present invention Figure 1A The transparent antenna 100 includes a grid structure MS. The transparent antenna 100 includes a transparent dielectric substrate 110, a plurality of antenna conductive layers 121, 122, a feed network layer 130, and a plurality of ground conductive layers 141, 142. The transparent dielectric substrate 110 is, for example (but not limited to), a single-layer structure or a multi-layer structure. The transparent dielectric substrate 110 has a first surface 110a and a second surface 110b. The material of the transparent dielectric substrate 110 is, for example, a transparent glass plate or a transparent acrylic plate.

[0073] The antenna conductive layers 121, 122 and the ground conductive layers 141, 142 are made of, for example, metal or metal oxide. The antenna conductive layers 121, 122 are disposed on the first surface 110a of the transparent dielectric substrate 110. The feed network layer 130 is disposed on the first surface 110a of the transparent dielectric substrate 110 and connected to the antenna conductive layers 121, 122. The ground conductive layers 141, 142 are disposed on the second surface 110b of the transparent dielectric substrate 110. The ground conductive layer 141 has an opening 141S.

[0074] The corresponding antenna conductive layer 121 and the ground conductive layer 141 form the antenna unit AT11, and the corresponding antenna conductive layer 122 and the ground conductive layer 142 form the antenna unit AT12. The positions of the antenna unit AT11 and the antenna unit AT12 can be interchanged. The antenna unit AT11 is, for example, a dual-band monopole slot antenna unit, which has a frequency band N1a and a frequency band N1b. The antenna unit AT12 is, for example, a single-band microstrip antenna unit, which has a frequency band N1a. That is, the antenna unit AT11 includes the frequency band N1a of the antenna unit AT12.

[0075] The distance D120 between the antenna unit AT11 and the antenna unit AT12 having the same frequency band N1a is between 1 / 2 and 1 medium wavelength. The medium is a transmission medium for radiated signals, such as air. The distance D120 is the distance between the center line L121 of the antenna conductive layer 121 and the center line L122 of the antenna conductive layer 122. By properly designing the distance D120, the radiation patterns of the two adjacent antenna units AT11 and AT12 can be synthesized by gain.

[0076] like Figure 1D As shown, the antenna conductive layers 121, 122, the feed network layer 130 and the ground conductive layers 141, 142 are a grid structure MS. The grid structure MS is composed of a plurality of main grid lines GD connected in an interlaced manner, and these main grid lines GD are substantially parallel or perpendicular to each other. The spacing D1 of these main grid lines GD is less than 1 / 20 of the medium wavelength, and the line width W1 of the main grid lines GD is, for example, 5 to 100 μm.

[0077] Please refer to Figure 2A to Figure 2B , Figure 2A FIG. 9 is a top view of a transparent antenna 900 ′ according to an embodiment of the present invention. Figure 2B For the present invention Figure 2A Return loss curve CV9' of the transparent antenna 900'. Figure 2A The transparent antenna 900' adopts the equivalent Figures 1A to 1D The ground conductive layer 941' corresponding to the antenna conductive layer 921' has an opening 941S'.

[0078] like Figure 2B As shown, according to the return loss curve CV9', Figure 2A The transparent antenna 900' can achieve good effects in the frequency band N41 and the frequency band N78. Figure 2A The peak gain of the transparent antenna 900 ′ in the frequency band N41 can reach 4.87 dBi, and the peak gain in the frequency band N78 can reach 4.43 dBi.

[0079] Please refer to Figure 3A to Figure 3B , Figure 3A FIG. 9 is a top view of a transparent antenna 900" according to another embodiment. Figure 3BFor the present invention Figure 2A The return loss curve CV9 of the transparent antenna 900”. Figure 3A The transparent antenna 900" uses the equivalent Figure 1A to Figure 1D The ground conductive layer 942" corresponding to the antenna conductive layer 921" has no opening.

[0080] like Figure 3B As shown, according to the return loss curve CV9", Figure 3A The transparent antenna 900" can achieve good results in band N78. Figure 3A The peak gain of the transparent antenna 900" in band N78 can reach 5.75dBi.

[0081] Please refer to Figure 4A to Figure 4B , Figure 4A FIG. 1 is a top view of a transparent antenna 900 according to an embodiment of the present invention. Figure 4B For the present invention Figure 4A Return loss curve CV9 of the transparent antenna 900. Figure 4A The transparent antenna 900 also uses the equivalent Figure 1A to Figure 1D The grounding conductive layer 941 corresponding to the antenna conductive layer 921 has an opening 941S, and the grounding conductive layer 942 corresponding to the antenna conductive layer 922 has no opening. The distance D920 between the antenna conductive layers 921 and 922 is between 1 / 2 and 1 dielectric wavelength.

[0082] like Figure 4B As shown, according to the return loss curve CV9, Figure 4A The transparent antenna 900 can achieve good results in frequency band N41 and frequency band N78. Figure 4A The peak gain of the transparent antenna 900 in the frequency band N41 can reach 5.12dBi, and the peak gain in the frequency band N78 can be as high as 8.03dBi. Obviously, through proper design of the distance D120, the radiation patterns of the two adjacent antenna units AT11 and AT12 can be synthesized, so that the peak gain of the frequency band N78 can be increased to 8.03dBi (compared to Figure 2A Transparent antenna 900' or Figure 3A The transparent antenna is 900” taller).

[0083] Please refer to Figures 5A to 5D , Figure 5A FIG. 2 is a top view of a transparent antenna 200 according to an embodiment of the present invention. Figure 5B for Figure 5A A side view of the transparent antenna 200, Figure 5C for Figure 5A A bottom view of the transparent antenna 200, Figure 5D for Figure 5AThe mesh structure MS of the transparent antenna 200. Figure 5A to Figure 5D In the embodiment of the present invention, the transparent antenna 200 includes a transparent dielectric substrate 210, a plurality of antenna conductive layers 221, 222, a feed network layer 230, and a plurality of ground conductive layers 241, 242. The transparent dielectric substrate 210 is, for example (but not limited to), a single-layer structure or a multi-layer structure. The material of the transparent dielectric substrate 210 is, for example, a transparent glass plate or a transparent acrylic plate.

[0084] The antenna conductive layers 221, 222 and the ground conductive layers 241, 242 are made of metal, for example. The feed network layer 230 is connected to the antenna conductive layers 121, 122. The ground conductive layer 241 has an opening 241S.

[0085] The corresponding antenna conductive layer 221 and the ground conductive layer 241 form the antenna unit AT21, and the corresponding antenna conductive layer 222 and the ground conductive layer 242 form the antenna unit AT22. The positions of the antenna unit AT21 and the antenna unit AT22 can be interchanged. The antenna unit AT21 is, for example, a dual-band monopole slot antenna unit, which has a frequency band N2a and a frequency band N2b. The antenna unit AT22 is, for example, a single-band microstrip antenna unit, which has a frequency band N2c. That is, the antenna unit AT21 does not include the frequency band N2c of the antenna unit AT22.

[0086] like Figure 5D As shown, the antenna conductive layers 221, 222, the feed network layer 230 and the ground conductive layers 241, 242 are a grid structure MS. The grid structure MS is composed of a plurality of main grid lines GD connected in an interlaced manner, and these main grid lines GD are substantially parallel or perpendicular to each other. The spacing D1 of these main grid lines GD is less than 1 / 20 of the medium wavelength, and the line width W1 of the main grid lines GD is, for example, 5 to 100 μm.

[0087] Please refer to Figures 6A to 6D , Fig. 6A FIG. 3 is a top view of a transparent antenna 300 according to another embodiment of the present invention. Figure 6B for Fig. 6A A side view of the transparent antenna 300, Figure 6C for Fig. 6A A bottom view of the transparent antenna 300, Fig.6D for Fig. 6A The mesh structure MS of the transparent antenna 300. Figure 6A to Figure 6D In the embodiment of the invention, the transparent antenna 300 includes a transparent dielectric substrate 310, a plurality of antenna conductive layers 321, 322, a feed network layer 330, and a plurality of ground conductive layers 341, 342. The transparent dielectric substrate 310 is, for example (but not limited to), a single-layer structure or a multi-layer structure. The material of the transparent dielectric substrate 310 is, for example, a transparent glass plate or a transparent acrylic plate.

[0088] The antenna conductive layers 321, 322 and the ground conductive layers 341, 342 are made of metal, for example. The feed network layer 330 is connected to the antenna conductive layers 321, 322. The ground conductive layers 341, 342 have no openings.

[0089] The corresponding antenna conductive layer 321 and the ground conductive layer 341 form the antenna unit AT31, and the corresponding antenna conductive layer 322 and the ground conductive layer 342 form the antenna unit AT32. The positions of the antenna unit AT31 and the antenna unit AT32 can be interchanged. The antenna unit AT31 is, for example, a single-band microstrip antenna unit having a frequency band N3a. The antenna unit AT32 is, for example, a single-band microstrip antenna unit having a frequency band N3b. That is, the antenna unit AT31 does not include the frequency band N3b of the antenna unit AT32.

[0090] like Fig.6D As shown, the antenna conductive layers 321, 322, the feed network layer 330 and the ground conductive layers 341, 342 are a grid structure MS. The grid structure MS is composed of a plurality of main grid lines GD connected in an interlaced manner, and these main grid lines GD are substantially parallel or perpendicular to each other. The spacing D1 of these main grid lines GD is less than 1 / 20 of the medium wavelength, and the line width W1 of the main grid lines GD is, for example, 5 to 100 μm.

[0091] Please refer to Figures 7A to 7D , Fig. 7A FIG. 4 is a top view of a transparent antenna 400 according to another embodiment of the present invention. Figure 7B for Fig. 7A A side view of the transparent antenna 400, Figure 7C for Fig. 7A A bottom view of the transparent antenna 400, Fig.7D for Fig. 7A The grid structure MS of the transparent antenna 400. FIG. 7A to FIG. 7D In the embodiment of the present invention, the transparent antenna 400 includes a transparent dielectric substrate 410, a plurality of antenna conductive layers 421, 422, a feed network layer 430, and a plurality of ground conductive layers 441, 442. The transparent dielectric substrate 410 is, for example (but not limited to), a single-layer structure or a multi-layer structure. The material of the transparent dielectric substrate 410 is, for example, a transparent glass plate or a transparent acrylic plate.

[0092] The antenna conductive layers 421, 422 and the ground conductive layers 441, 442 are made of metal, for example. The feed network layer 430 is connected to the antenna conductive layers 421, 422. The ground conductive layer 441 has an opening 441S, and the ground conductive layer 442 also has an opening 442S.

[0093] The corresponding antenna conductive layer 421 and the ground conductive layer 441 form an antenna unit AT41, and the corresponding antenna conductive layer 422 and the ground conductive layer 442 form an antenna unit AT42. The positions of the antenna unit AT41 and the antenna unit AT42 can be interchanged. The antenna unit AT41 is, for example, a single-band slot antenna unit having a frequency band N4a. The antenna unit AT42 is, for example, a single-band slot antenna unit having a frequency band N4b. That is, the antenna unit AT41 does not include the frequency band N4b of the antenna unit AT42.

[0094] like Fig.7D As shown, the antenna conductive layers 421, 422, the feed network layer 430 and the ground conductive layers 441, 442 are a grid structure MS. The grid structure MS is composed of a plurality of main grid lines GD connected in an interlaced manner, and these main grid lines GD are substantially parallel or perpendicular to each other. The spacing D1 of these main grid lines GD is less than 1 / 20 of the medium wavelength, and the line width W1 of the main grid lines GD is, for example, 5 to 100 μm.

[0095] Please refer to Figures 8A to 8D , Fig. 8A FIG. 5 is a top view of a transparent antenna 500 according to an embodiment of the present invention. Figure 8B for Fig. 8A A side view of the transparent antenna 500, Figure 8C for Fig. 8A A bottom view of the transparent antenna 500, Fig.8D For the present invention Fig. 8A The transparent antenna 500 includes a grid structure MS of a transparent antenna 500. The transparent antenna 500 includes a transparent dielectric substrate 510, a plurality of antenna conductive layers 521, 522, 523, 524, a feed network layer 530, and a plurality of ground conductive layers 541, 542, 543, 544. The transparent dielectric substrate 510 is, for example (but not limited to), a single-layer structure or a multi-layer structure. The material of the transparent dielectric substrate 510 is, for example, a transparent glass plate or a transparent acrylic plate.

[0096] The antenna conductive layers 521 , 522 , 523 , 524 and the ground conductive layers 541 , 542 , 543 , 544 are made of metal, for example. The feed network layer 530 connects the antenna conductive layers 521 , 522 , 523 , 524 .

[0097] The corresponding antenna conductive layer 521 and the ground conductive layer 541 form an antenna unit AT51, the corresponding antenna conductive layer 522 and the ground conductive layer 542 form an antenna unit AT52, the corresponding antenna conductive layer 523 and the ground conductive layer 543 form an antenna unit AT53, and the corresponding antenna conductive layer 524 and the ground conductive layer 544 form an antenna unit AT54. The positions of the antenna unit AT51, the antenna unit AT52, the antenna unit AT53, and the antenna unit AT54 can be interchanged. The antenna units AT51 to AT54 are, for example, single-band or multi-band antennas, and their antenna styles are, for example, slot antenna units, microstrip antenna units, or dipole slot antenna units. The antenna unit AT51 has a frequency band N5a, the antenna unit AT52 has a frequency band N5a, the antenna unit AT53 has a frequency band N5b, and the antenna unit AT54 has a frequency band N5c.

[0098] The distance D520 between the antenna units AT51 and AT52 having the same frequency band N5a is between 1 / 2 and 1 medium wavelength. The medium is a transmission medium for radiated signals, such as air. The distance D520 is the distance between the center line L521 of the antenna conductive layer 521 and the center line L522 of the antenna conductive layer 522. By properly designing the distance D520, the radiation patterns of the two adjacent antenna units AT51 and AT52 can be synthesized by gain.

[0099] like Fig.8D As shown, the antenna conductive layers 521, 522, 523, 524, the feed network layer 530 and the ground conductive layers 541, 542, 523, 524 are a grid structure MS. The grid structure MS is composed of a plurality of main grid lines GD connected in an interlaced manner, and these main grid lines GD are substantially parallel or perpendicular to each other. The spacing D1 of these main grid lines GD is less than 1 / 20 of the medium wavelength, and the line width W1 of the main grid lines GD is, for example, 5 to 100 μm.

[0100] Please refer to Figures 9A to 9D , Fig.9A FIG. 6 is a top view of a transparent antenna 600 according to an embodiment of the present invention. Fig. 9B for Fig.9A A side view of the transparent antenna 600, Fig. 9C for Fig.9A A bottom view of the transparent antenna 600, Fig.9D For the present invention Fig.9A The transparent antenna 600 includes a grid structure MS of a transparent antenna 600. The transparent antenna 600 includes a transparent dielectric substrate 610, a plurality of antenna conductive layers 621, 622, 623, 624, a feed network layer 630, and a plurality of ground conductive layers 641, 642, 643, 644. The transparent dielectric substrate 610 is, for example (but not limited to), a single-layer structure or a multi-layer structure. The material of the transparent dielectric substrate 610 is, for example, a transparent glass plate or a transparent acrylic plate.

[0101] The antenna conductive layers 621 , 622 , 623 , 624 and the ground conductive layers 641 , 642 , 643 , 644 are made of metal, for example. The feed network layer 630 connects the antenna conductive layers 621 , 622 , 623 , 624 .

[0102] The corresponding antenna conductive layer 621 and the ground conductive layer 641 form an antenna unit AT61, the corresponding antenna conductive layer 622 and the ground conductive layer 642 form an antenna unit AT62, the corresponding antenna conductive layer 623 and the ground conductive layer 643 form an antenna unit AT63, and the corresponding antenna conductive layer 624 and the ground conductive layer 644 form an antenna unit AT64. The positions of the antenna unit AT61, the antenna unit AT62, the antenna unit AT63, and the antenna unit AT64 can be interchanged. The antenna units AT61 to AT64 are, for example, single-band or multi-band antennas, and their antenna styles are, for example, slot antenna units, microstrip antenna units, or dipole slot antenna units. The antenna unit AT61 has a frequency band N6a, the antenna unit AT62 has a frequency band N6b, the antenna unit AT63 has a frequency band N6c, and the antenna unit AT64 has a frequency band N6d.

[0103] like Fig.9D As shown, the antenna conductive layers 621, 622, 623, 624, the feed network layer 630 and the ground conductive layers 641, 642, 643, 644 are a grid structure MS. The grid structure MS is composed of a plurality of main grid lines GD connected in an interlaced manner, and these main grid lines GD are substantially parallel or perpendicular to each other. The spacing D1 of these main grid lines GD is less than 1 / 20 of the medium wavelength, and the line width W1 of the main grid lines GD is, for example, 5 to 100 μm.

[0104] Please refer to Figures 10A to 10D , Fig. 10A FIG. 7 is a top view of a transparent antenna 700 according to an embodiment of the present invention. Fig. 10B for Fig. 10A A side view of the transparent antenna 700, Fig. 10C for Fig. 10A A bottom view of the transparent antenna 700, Fig. 10D For the present invention Fig. 10A The transparent antenna 700 includes a grid structure MS. The transparent antenna 700 includes a transparent dielectric substrate 710, a plurality of antenna conductive layers 721, 722, a feed network layer 730, and a plurality of ground conductive layers 741, 742. The transparent dielectric substrate 710 is, for example (but not limited to), a single-layer structure or a multi-layer structure. The material of the transparent dielectric substrate 710 is, for example, a transparent glass plate or a transparent acrylic plate.

[0105] The antenna conductive layers 721 , 722 and the ground conductive layers 741 , 742 are made of metal, for example. The feed network layer 730 connects the antenna conductive layers 721 , 722 .

[0106] The corresponding antenna conductive layer 721 and the ground conductive layer 741 form an antenna unit AT71, and the corresponding antenna conductive layer 722 and the ground conductive layer 742 form an antenna unit AT72. The positions of the antenna unit AT71 and the antenna unit AT72 can be interchanged. The antenna unit AT71 is, for example, a three-band dipole antenna. The antenna unit AT72 is, for example, a single-band microstrip antenna. The ground conductive layer 742 is provided with a hollow area 742h (shown in FIG. Fig. 10C ). The antenna unit AT71 has frequency bands N7a, N7b, and N7c, and the antenna unit AT72 has frequency band N7a. That is, the antenna unit AT71 includes the frequency band N7a of the antenna unit AT72. The antenna unit AT71 has a coplanar waveguide (CPW) transmission line structure 761, and both sides of the CPW transmission line structure 761 are connected to the ground conductive layer 741 through conductive through holes 751, and the middle of the CPW transmission line structure 761 is connected to the feed network layer 730.

[0107] The distance D720 between the antenna unit AT71 and the antenna unit AT72 having the same frequency band N7a is between 1 / 2 and 1 medium wavelength. The medium is a transmission medium for radiated signals, such as air. The distance D720 is the distance between the center line L721 of the antenna conductive layer 721 and the center line L722 of the antenna conductive layer 722. By properly designing the distance D720, the radiation patterns of the two adjacent antenna units AT71 and AT72 can be synthesized by gain.

[0108] like Fig. 10D As shown, the antenna conductive layers 721, 722, the feed network layer 730 and the ground conductive layers 741, 742 are a grid structure MS. The grid structure MS is composed of a plurality of main grid lines GD connected in an interlaced manner, and these main grid lines GD are substantially parallel or perpendicular to each other. The distance D1 between these main grid lines GD is less than 1 / 20 of the medium wavelength, and the line width W1 of the main grid line GD is, for example, 5 to 100 μm.

[0109] Please refer to Figures 11A to 11D , Fig.11A FIG. 8 is a top view of a transparent antenna 800 according to an embodiment of the present invention. Fig. 11B for Fig.11A A side view of the transparent antenna 800, Fig. 11C for Fig.11A A bottom view of the transparent antenna 800, Fig.11D For the present invention Fig.11AThe transparent antenna 800 includes a transparent dielectric substrate 810, a plurality of antenna conductive layers 821, 822, a feed network layer 830, a plurality of ground conductive layers 841, 842 and two conductive through holes 851. The ground conductive layer 841 has a hollowed-out area 841h (shown in FIG. Fig. 11C ), the ground conductive layer 842 has a hollowed-out area 842h (shown in FIG. Fig. 11C The transparent medium substrate 810 is, for example (but not limited to), a single-layer structure or a multi-layer structure. The material of the transparent medium substrate 810 is, for example, a transparent glass plate or a transparent acrylic plate.

[0110] The antenna conductive layers 821 , 822 and the ground conductive layers 841 , 842 are made of metal, for example. The feed network layer 830 connects the antenna conductive layers 821 , 822. The conductive through hole 851 connects the antenna conductive layers 821 , 822 and the ground conductive layers 841 , 842.

[0111] The corresponding antenna conductive layer 821 and the ground conductive layer 841 form an antenna unit AT81, and the corresponding antenna conductive layer 822 and the ground conductive layer 842 form an antenna unit AT82. The positions of the antenna unit AT81 and the antenna unit AT82 can be interchanged. The antenna unit AT81 and the antenna unit AT82 are, for example, three-frequency dipole antennas. The ground conductive layer 842 is provided with a hollow area 842h. The antenna unit AT81 has frequency bands N8a, N8b, and N8c, and the antenna unit AT82 has frequency bands N8a, N8b, and N8d. In other words, the antenna unit AT81 includes the frequency bands N7a and N8b of the antenna unit AT82. The antenna unit AT81 has a CPW transmission line structure 861. Both sides of the CPW transmission line structure 861 are connected to the ground conductive layer 841 through conductive through holes 851, and the middle of the CPW transmission line structure 861 is connected to the feed network layer 830. The antenna unit AT82 has a CPW transmission line structure 862 . Both sides of the CPW transmission line structure 862 are connected to the ground conductive layer 842 via conductive through holes 851 . The middle of the CPW transmission line structure 862 is connected to the feed network layer 830 .

[0112] The distance D820 between the antenna unit AT81 and the antenna unit AT82 having the same frequency band N8a is between 1 / 2 and 1 medium wavelength. The medium is a transmission medium for radiated signals, such as air. The distance D820 is the distance between the center line L821 of the antenna conductive layer 821 and the center line L822 of the antenna conductive layer 822. By properly designing the distance D820, the radiation patterns of the two adjacent antenna units AT81 and AT82 can be synthesized by gain.

[0113] like Fig.11DAs shown, the antenna conductive layers 821, 822, the feed network layer 830 and the ground conductive layers 841, 842 are a grid structure MS. The grid structure MS is composed of a plurality of main grid lines GD connected in an interlaced manner, and these main grid lines GD are substantially parallel or perpendicular to each other. The spacing D1 of these main grid lines GD is less than 1 / 20 of the medium wavelength, and the line width W1 of the main grid lines GD is, for example, 5 to 100 μm.

[0114] Please refer to Figures 12A to 12C , which shows various designs of the main grid lines GD. Fig. 12A As shown, the main grid line GD is composed of several sub-grid lines GDS connected in an interlaced manner. These sub-grid lines GDS are substantially parallel or perpendicular to each other. Through the design of the sub-grid lines GDS, the main grid line GD can have a high penetration rate.

[0115] like Fig. 12B As shown, the main grid line GD may also have a plurality of through holes HLi. Each through hole HLi is, for example, a square structure. These through holes HLi are regularly interspersed and arranged in an array (through holes HLi are provided at some positions on the array, and through holes HLi are not provided at some positions on the array). Through the design of the through holes HLi, the main grid line GD can have a high penetration rate.

[0116] like Fig. 12C As shown, the through hole HLi of the main grid line GD is circular. In another embodiment, the through hole HLi may also be triangular, hexagonal, or any other shape. Through the design of the through hole HLi, the main grid line GD can have a high penetration rate.

[0117] The above-mentioned embodiments, through the design of the grid structure and multiple antenna units, enable the transparent antenna to not only present high penetration, but also have good multi-frequency radiation efficiency, and can be widely used in vehicles and buildings.

[0118] The above disclosure provides different features for implementing some embodiments or examples of the present invention. The specific examples (e.g., numerical values ​​or names) of the above-described components and configurations are to simplify / illustrate some embodiments of the present invention. Of course, these components and configurations are only examples and are not intended to be restrictive. In addition, some embodiments of the present invention may repeat reference symbols and / or letters in various examples. This repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or configurations discussed.

[0119] Although the present invention has been disclosed as above by way of embodiments, it is not intended to limit the present invention. A person skilled in the art of the present invention may make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the attached patent application.

Claims

1. A transparent antenna, characterized in that: include: Transparent dielectric substrate; A plurality of antenna conductive layers are disposed on the first surface of the transparent medium substrate; A feeding network layer, disposed on the first surface of the transparent medium substrate and connected to the antenna conductive layers; as well as A plurality of ground conductive layers, wherein the antenna conductive layers, the feed network layer and the ground conductive layers are in a grid structure; The corresponding antenna conductive layers and the ground conductive layers form a plurality of antenna units, and the antenna conductive layers of the antenna units are not completely the same; or the ground conductive layers of the antenna units are not completely the same.

2. The transparent antenna according to claim 1, characterized in that: The grounding conductive layers are arranged on the second surface of the transparent medium substrate.

3. The transparent antenna according to claim 1, characterized in that: The transparent medium substrate is a single-layer structure.

4. The transparent antenna according to claim 1, characterized in that: The transparent medium substrate is a multi-layer structure.

5. The transparent antenna according to claim 1, characterized in that: The antenna conductive layers of the antenna units are different, and the ground conductive layers of the antenna units are the same.

6. The transparent antenna according to claim 1, characterized in that: The ground conductive layers of the antenna units are different.

7. The transparent antenna according to claim 1, characterized in that: The antenna conductive layers of the antenna units are different, and the ground conductive layers of the antenna units are different.

8. The transparent antenna according to claim 1, characterized in that: The distance between the antenna units is 1 / 2 to 1 medium wavelength.

9. The transparent antenna according to claim 1, characterized in that: The distance between the antenna units is the distance between the center lines of the antenna conductive layers.

10. The transparent antenna according to claim 1, characterized in that: The antenna units include a dual-band monopole slot antenna unit and a single-band microstrip antenna unit.

11. The transparent antenna according to claim 1, characterized in that: The antenna units include two single-band microstrip antenna units.

12. The transparent antenna according to claim 1, characterized in that: The antenna units include two single-band slot antenna units.

13. The transparent antenna according to claim 1, characterized in that: The grid structure is composed of a plurality of main grid lines that are connected in an interlaced manner. The main grid lines are parallel or perpendicular to each other, and the line width of each main grid line is 5 to 100 μm.

14. The transparent antenna according to claim 13, characterized in that: The spacing between the main grid lines is less than 1 / 20 of the medium wavelength.

15. The transparent antenna according to claim 13, characterized in that: Each of the main grid lines is composed of a plurality of secondary grid lines that are connected in an interlaced manner.

16. The transparent antenna according to claim 13, characterized in that: Each of the main grid lines includes a plurality of through holes.

17. A transparent antenna, characterized in that: include: Transparent dielectric substrate; A plurality of antenna conductive layers are disposed on the first surface of the transparent medium substrate; A feeding network layer, disposed on the first surface of the transparent medium substrate and connected to the antenna conductive layers; as well as A plurality of ground conductive layers, wherein the antenna conductive layers, the feed network layer and the ground conductive layers are in a grid structure; The corresponding antenna conductive layers and the ground conductive layers form a plurality of antenna units, two adjacent antenna units have the same frequency band, and the distance between the antenna units with the same frequency band is between 1 / 2 and 1 medium wavelength.

18. A transparent antenna, characterized in that: include: Transparent dielectric substrate; A plurality of antenna conductive layers are disposed on the first surface of the transparent medium substrate; A feeding network layer, disposed on the first surface of the transparent medium substrate and connected to the antenna conductive layers; as well as A plurality of ground conductive layers, wherein the antenna conductive layers, the feed network layer and the ground conductive layers are in a grid structure; The corresponding antenna conductive layers and the ground conductive layers form a plurality of antenna units, each of the antenna units has at least one frequency band, and the at least one frequency band of the antenna conductive layers is not completely the same.

19. The transparent antenna according to claim 18, characterized in that: Some of the at least one frequency bands of the antenna units are the same, and some of the at least one frequency bands are different.

20. The transparent antenna according to claim 18, characterized in that: The at least one frequency band of the antenna units are all different.

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