Vehicle antenna

Abstract

In an antenna for a vehicle, the vehicle includes a front window glass, a rear window glass, and first and second quarter window glasses. The vehicle antenna includes a plurality of antennas of a first group disposed on the rear window glass and operating as a MIMO antenna, and a plurality of antennas of a second group disposed on the first and second quarter window glasses and operating as a MIMO antenna. First auxiliary group antennas among the plurality of antennas of the second group may be arranged on the first quarter window glass, and second auxiliary group antennas among the plurality of antennas of the second group may be arranged on the second quarter window glass.

Description

Car antenna

[0001] The present disclosure relates to a vehicle antenna implemented as a transparent antenna. A particular implementation relates to a vehicle antenna having transparent antennas positioned in different areas of a vehicle's windshield.

[0002] Vehicles are evolving beyond the simple mechanical means of transportation of the past into new spaces offering autonomous driving and diverse infotainment. Meanwhile, with the evolution of networks, the number of wireless communication systems supported by vehicles is also increasing, necessitating an expansion of new antenna design space.

[0003] Meanwhile, the vehicle body and roof are made of metal, which poses a problem of radio wave blocking. Therefore, a separate antenna structure can be placed on the upper portion of the vehicle body or roof. Alternatively, if the antenna structure is placed on the lower portion of the vehicle body or roof, the portion of the vehicle body or roof corresponding to the antenna placement area can be formed of a non-metallic material.

[0004] However, from a design perspective, the vehicle body or roof needs to be formed as one piece. In such cases, the exterior of the vehicle body or roof may be formed of metal. Consequently, there is a risk that the vehicle body or roof may significantly reduce antenna efficiency.

[0005] Meanwhile, the vehicle antenna may be implemented as an external antenna, positioned within a shark fin structure. A telematics control unit (TCU) that controls the operation of the vehicle antenna may be connected to the external antenna. Alternatively, the vehicle antenna may be implemented as an internal antenna positioned within the TCU.

[0006] In this regard, a transparent antenna may be placed on the glass corresponding to the vehicle's window to increase communication capacity without changing the vehicle's exterior design. The transparent antenna may be placed symmetrically on one side or the other, such as the front or rear window of the vehicle.

[0007] Meanwhile, most vehicle OEMs are requiring a cellular 4x4 MIMO configuration. In this regard, multiple antenna elements may be placed in the upper roof area of ​​the vehicle. As the number of multiple antenna elements placed in the upper roof area of ​​the vehicle increases, the overall antenna area increases. In this regard, there is a problem that as the uniaxial length of the overall antenna area increases, the uniaxial length of the antenna module formed to cover the entire antenna area also increases. Accordingly, the uniaxial length of the antenna module may increase by the same amount as the uniaxial length of the vehicle, or in some cases, may increase more than that.

[0008] Therefore, new antenna configurations and layout structures are required to accommodate the increased number of antennas. In particular, antenna configurations and layout structures that consider mutual interference between antennas positioned in different areas of the vehicle's windshield during MIMO operation are required.

[0009] The purpose of this specification is to provide a new antenna configuration and arrangement structure according to the expansion of the number of antennas in a vehicle antenna.

[0010] The purpose of this specification is to provide an antenna configuration and arrangement structure that takes into account mutual interference between antennas placed in different areas of a vehicle window during MIMO operation.

[0011] The purpose of this specification is to provide omnidirectional communication to the rear and sides of a vehicle by having antennas placed on different glass surfaces to form different coverage areas.

[0012] The purpose of this specification is to provide omnidirectional communication to the front and sides of a vehicle by having antennas placed on different glass to form different coverage areas.

[0013] According to one aspect of the present disclosure for achieving the above or other purposes, a vehicle antenna comprises a vehicle having a front window glass, a rear window glass, and first and second quarter window glasses. The vehicle antenna comprises a first group of a plurality of antennas disposed on the rear window glass and operating as MIMO antennas; and a second group of a plurality of antennas disposed on the first and second quarter window glasses and operating as MIMO antennas. Among the second group of a plurality of antennas, a first auxiliary group antenna may be disposed on the first quarter window glass, and a second auxiliary group antenna may be disposed on the second quarter window glass. A radiation signal of the first group of a plurality of antennas has a first radiation direction, a radiation signal of the first auxiliary group antennas has a second radiation direction, and a radiation signal of the second auxiliary group antennas has a third radiation direction.

[0014] In an embodiment, the first radiation direction, the second radiation direction, and the third radiation direction may be different from each other. The plurality of antennas of the first group, the first auxiliary group antennas, and the second auxiliary group antennas may each have at least one transmitting antenna.

[0015] In an embodiment, the plurality of antennas of the first group may include a first antenna that primarily transmits and receives a first signal and a second antenna that primarily transmits and receives a second signal. The plurality of antennas of the second group may include a fifth antenna that primarily transmits and receives a fifth signal and a seventh antenna that primarily transmits and receives a seventh signal.

[0016] In an embodiment, the plurality of antennas of the first group may include a first antenna that primarily transmits and receives a first signal, a second antenna that primarily transmits and receives a second signal, a third antenna that receives a third signal, and a fourth antenna that receives a fourth signal. The first antenna and the third antenna may be disposed in a first area of ​​the rear window glass. The second antenna and the fourth antenna may be disposed in a second area of ​​the rear window glass. The first area may be defined as a left area of ​​the rear window glass, and the second area may be defined as a right area of ​​the rear window glass.

[0017] In an embodiment, the plurality of antennas of the second group may include a fifth antenna that primarily transmits and receives a fifth signal, a sixth antenna that receives a sixth signal, a seventh antenna that primarily transmits and receives a seventh signal, and an eighth antenna that receives an eighth signal. The fifth antenna and the sixth antenna may be disposed on the first quarter window glass. The seventh antenna and the eighth antenna may be disposed on the second quarter window glass.

[0018] In an embodiment, the vehicle antenna module may further include a first TRX module operably coupled with the first antenna; a second TRX module operably coupled with the second antenna; and a switch disposed between the first and second antennas and the first and second TRX modules, the switch configured to control a path along which the first and second antennas are connected. The vehicle antenna module may further include a first RX module operably coupled with the third antenna; a second RX module operably coupled with the fourth antenna; and a first transceiver operably coupled with the first and second TRX modules and the first and second RX modules.

[0019] In an embodiment, the plurality of antennas of the first group can perform MIMO operation in the rear direction of the vehicle by transmitting and receiving the first and second signals through the first and second antennas in the first frequency band to the third frequency band.

[0020] In an embodiment, the vehicle antenna module may further include a third TRX module operably coupled with the fifth antenna; a fourth TRX module operably coupled with the seventh antenna; and a second switch disposed between the fifth and seventh antennas and the third and seventh TRX modules, the second switch configured to control a path along which the fifth and seventh antennas are connected. The vehicle antenna module may further include a third RX module operably coupled with the sixth antenna; a fourth RX module operably coupled with the eighth antenna; and a second transceiver operably coupled with the third and fourth TRX modules and the third and fourth RX modules.

[0021] In an embodiment, the plurality of antennas of the second group can perform MIMO operation in a lateral direction of the vehicle by transmitting and receiving the fifth and seventh signals through the fifth and seventh antennas in the first frequency band to the third frequency band.

[0022] In another aspect of the present disclosure, a vehicle antenna comprises a vehicle having a front window glass, a rear window glass, and first and second side window glass. The vehicle antenna comprises a first group of a plurality of antennas disposed on the front window glass and operating as MIMO antennas; and a second group of a plurality of antennas disposed on the first and second side window glass and operating as MIMO antennas. Among the second group of a plurality of antennas, a first auxiliary group antenna may be disposed on the first side window glass, and a second auxiliary group antenna may be disposed on the second side window glass. Radiation signals of the first group of a plurality of antennas have a first radiation direction, radiation signals of the first auxiliary group antennas have a second radiation direction, and radiation signals of the second auxiliary group antennas have a third radiation direction.

[0023] In an embodiment, the first radiation direction, the second radiation direction, and the third radiation direction may be different from each other. The plurality of antennas of the first group, the first auxiliary group antennas, and the second auxiliary group antennas may each have at least one transmitting antenna.

[0024] The technical effects of the vehicle antenna according to this specification can be summarized as follows, but are not limited thereto.

[0025] According to this specification, a new antenna configuration and arrangement structure according to an expansion of the number of antennas can be provided on the front, side, or rear window of a vehicle.

[0026] According to the present specification, an antenna configuration and arrangement structure can be provided in which mutual interference between antennas is reduced by making the main radiation angles of radiation patterns of antennas placed in different areas of a vehicle window different during MIMO operation.

[0027] According to the present specification, antennas placed on different glass in a vehicle antenna can form different coverage areas to provide omnidirectional communication to the rear and sides of the vehicle while reducing mutual interference during MIMO operation.

[0028] According to this specification, antennas placed on different glass in a vehicle antenna can form different coverage areas to provide omnidirectional communication to the front and sides of the vehicle while reducing mutual interference during MIMO operation.

[0029] Further scope of the applicability of this specification will become apparent from the detailed description below. However, since various changes and modifications within the spirit and scope of this specification will be apparent to those skilled in the art, it should be understood that the detailed description and specific examples, such as preferred embodiments, are given by way of example only.

[0030] FIG. 1 illustrates glass of a vehicle on which an antenna structure according to an embodiment of the present disclosure may be placed.

[0031] Figure 2 shows the types of V2X applications.

[0032] Figure 3 shows a configuration in which a vehicle antenna is placed on the vehicle window.

[0033] Figure 4a shows a perspective view of a glass panel that can be joined or attached to the frame of a vehicle.

[0034] Figure 4b shows a cross-sectional view of the glass panel of the vehicle of Figure 4a joined to the frame.

[0035] Figure 5 shows a vehicle antenna and its radiation patterns placed on the vehicle rear window glass and quarter window glass.

[0036] Figure 6 shows a vehicle antenna and radiation patterns placed on the vehicle's front window glass and side window glass.

[0037] FIG. 7 shows a block diagram of antennas placed on the rear window glass of the vehicle of FIG. 5 or the front window glass of the vehicle of FIG. 6.

[0038] FIG. 8 shows a block diagram of antennas arranged on the first and second quarter window glasses of the vehicle of FIG. 5 or the first and second side window glasses of the vehicle of FIG. 6.

[0039] Fig. 9 shows the arrangement structure of antennas placed on the rear window glass of the vehicle of Fig. 5.

[0040] Figure 10 shows the configuration of a vehicle antenna supporting 2X2 MIMO.

[0041] FIG. 11 shows a block diagram of antennas placed on the rear window glass or front window glass supporting 2X2 MIMO of FIG. 10.

[0042] FIG. 12 shows a block diagram of antennas placed on the quarter window glass or side window glass supporting 2X2 MIMO of FIG. 10.

[0043] Figure 13 shows the configuration of a vehicle antenna supporting 4X4 MIMO.

[0044] Figure 14 shows a block diagram of antennas arranged on the lower window glass, the first and second quarter window glass, and the upper glass.

[0045] Figure 15 shows a block diagram of antennas placed on the front window glass of the vehicle of Figure 6.

[0046] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Regardless of the drawing numbers, identical or similar components will be given the same reference numbers and redundant descriptions thereof will be omitted. The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably only for the convenience of writing the specification, and do not in themselves have distinct meanings or roles. In addition, when describing the embodiments disclosed in this specification, if it is determined that a specific description of a related known technology may obscure the gist of the embodiments disclosed in this specification, a detailed description thereof will be omitted. In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present invention.

[0047] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0048] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0049] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0050] In this application, terms such as “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but should be understood not to exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0051] The vehicle antenna described herein can be mounted on a vehicle. The configuration and operation according to the embodiments described herein can also be applied to a vehicle-mounted communication system, i.e., a vehicle antenna. In this regard, a vehicle-mounted antenna may include multiple antennas and a transceiver circuit and processor that control the antennas.

[0052] Hereinafter, an antenna assembly (antenna module) that can be placed on a vehicle window according to the present specification and a vehicle antenna including the antenna assembly are described. In this regard, the antenna assembly refers to a structure in which conductive patterns are combined on a dielectric substrate, and may also be referred to as an antenna module.

[0053] In this regard, FIG. 1 illustrates glass of a vehicle on which an antenna structure according to an embodiment of the present disclosure may be placed. Referring to FIG. 1, the vehicle (1) may be configured to include a front window glass (310), a side window glass (320), a rear window glass (330), and a quarter window glass (340). Meanwhile, the vehicle (1) may further be configured to include an upper glass (350) formed on a roof of an upper region.

[0054] Accordingly, the glass constituting the window of the vehicle (1) may include a front window glass (310) disposed in the front area of ​​the vehicle (1), a side window glass (320) disposed in the door area of ​​the vehicle (1), and a rear window glass (330) disposed in the rear area of ​​the vehicle (1). Meanwhile, the glass constituting the window of the vehicle (1) may further include a quarter window glass (340) disposed in a part of the door area of ​​the vehicle (1). In addition, the glass constituting the window of the vehicle (1) may further include an upper glass (350) disposed in the upper area of ​​the vehicle (1) and spaced apart from the rear window glass (330). Accordingly, each glass constituting the window of the vehicle (1) may also be referred to as a window.

[0055] The front window glass (310) may be referred to as a front windshield because it prevents wind from entering the interior of the vehicle (1) from the front. The front window glass (310) may be formed as a two-layer laminated structure having a thickness of about 5.0 to 5.5 mm. The front window glass (310) may be formed as a laminated structure of glass / anti-shatter film / glass.

[0056] The side window glass (320) may be formed of a two-layer laminated structure or a single-layer pressed glass. The rear window glass (330) may be formed of a two-layer laminated structure or a single-layer pressed glass with a thickness of about 3.5 to 5.5 mm. A separation distance is required between the heating element and the AM / FM antenna and the transparent antenna in the rear window glass (330). The quarter window glass (340) may be formed of a single-layer pressed glass with a thickness of about 3.5 to 4.0 mm, but is not limited thereto.

[0057] The size of the quarter window glass (340) varies depending on the type of vehicle (1), and the size of the quarter window glass (340) may be configured to be smaller than the sizes of the front window glass (310) and the rear window glass (330).

[0058] A vehicle (1) may be configured to communicate with pedestrians, surrounding infrastructure, and / or servers in addition to surrounding vehicles (1). In this regard, FIG. 2 illustrates types of V2X applications. Referring to FIG. 2, V2X (Vehicle-to-Everything) communication includes communication between the vehicle (1) and all entities, such as V2V (Vehicle-to-Vehicle) referring to communication between vehicles (1), V2I (Vehicle to Infrastructure) referring to communication between the vehicle (1) and an eNB or RSU (Road Side Unit), V2P (Vehicle-to-Pedestrian) referring to communication between terminals possessed by the vehicle (1) and an individual (pedestrian, cyclist, driver or passenger of the vehicle (1), and V2N (vehicle-to-network).

[0059] Meanwhile, a vehicle antenna (1000) having a wideband transparent antenna structure that can be placed on the vehicle's glass according to the present specification can be implemented as a single dielectric substrate on the same plane as the CPW feeder. In addition, the wideband transparent antenna structure that can be placed on the vehicle's glass according to the present specification can be implemented as a structure in which grounds are formed on both sides of the radiator, thereby forming a wideband structure.

[0060] Hereinafter, an antenna assembly related to a wideband transparent antenna structure according to the present specification will be described. In this regard, FIG. 3 illustrates a configuration in which a vehicle antenna is placed on a vehicle window. Referring to FIG. 3, a vehicle antenna (1000) may include a first dielectric substrate (1010a) and a second dielectric substrate (1010b). The first dielectric substrate (1010a) may be implemented as a transparent substrate and may be referred to as a transparent substrate (1010a). The second dielectric substrate (1010b) may be implemented as an opaque substrate (1010b).

[0061] The glass panel (10) may be configured to include a transparent region (11) and an opaque region (12). The glass panel (10) may be at least one of the front window glass (310), the side window glass (320), the rear window glass (330), and the quarter window glass (340) of FIG. 1. The opaque region (12) of the glass panel (10) may be a frit layer formed of a frit layer. The opaque region (12) may be formed to surround the transparent region (11). The opaque region (12) may be formed in an outer region of the transparent region (11). The opaque region (12) may form a boundary region of the glass panel (10).

[0062] The antennas disposed on the first dielectric substrate (1010a) may be implemented as transparent antennas formed of metal mesh grids. Feed patterns and ground patterns for applying signals to the antennas may be formed on the second dielectric substrate (1010b). The second dielectric substrate (1010b) may be implemented as a flexible printed circuit board (FPCB). A slot antenna may be formed on the second dielectric substrate (1010b) with a portion of the ground pattern removed.

[0063] When a vehicle antenna (1000) is attached to the inside or surface of a glass panel (10), a first dielectric substrate (1010a) having a transparent electrode portion including an antenna pattern and a dummy pattern formed thereon may be placed in a transparent area (11). Meanwhile, a second dielectric substrate (1010b), such as an FPCB, may be placed in an opaque area (312).

[0064] The antennas disposed on the first dielectric substrate (1010a) may include MIMO antennas and / or other antenna elements for wireless communication. The other antenna elements may include at least one of a GNSS / radio / broadcast / WiFi / satellite communication / UWB, and a Remote Keyless Entry (RKE) antenna for vehicle applications.

[0065] A power supply pattern formed on a second dielectric substrate (1010b) may be connected to a telematics control unit (TCU) (200) via a cable (CL), such as a coaxial cable. The TCU (200) may be placed inside a vehicle, but is not limited thereto. The TCU (200) may be placed on a dashboard inside a vehicle or in a ceiling area of ​​the vehicle, but is not limited thereto.

[0066] Meanwhile, the vehicle's glass, in which the transparent antenna is positioned, may be coupled to the vehicle's frame. In this regard, Fig. 4a illustrates a perspective view of a glass panel that may be coupled or attached to the vehicle's frame. Fig. 4b illustrates a cross-sectional view of the vehicle's glass panel of Fig. 4a coupled to the frame.

[0067] Referring to FIGS. 4a and 4b, a glass panel (10) can be coupled or attached to a frame (9) of a vehicle and can cover an opening (9h) of the frame (9). For example, the glass panel (10) can be glass of the vehicle (1), such as a front window glass (310), a side window glass (320), a rear window glass (330), a quarter window glass (340), or a top glass (350) (see FIG. 1).

[0068] The groove (9g) of the frame (9) may extend along the edge of the glass (10, 10') and define the boundary of the opening (9h). For example, the frame (9) may include a metal material, and a sealant (7, sealant) may be filled between the groove (9g) and the glass panel (10). The groove (9g) may be formed to have a step with respect to the inner boundary of the frame (9). A glass panel (10) having an opaque area (12) formed therein may be placed in the groove (9g) formed to have a step with respect to the inner end of the frame (9). As the glass (10) is placed in the groove (9g), the step of the groove (9g) may be regarded as non-existent from the outside of the vehicle.

[0069] The vehicle antenna (1000) may be positioned on one side of the glass panel (10) or inside the glass panel (10). The vehicle antenna (1000) may be transparent. The vehicle antenna (1000) may be flexible.

[0070] A first region (1100a) in which an antenna (1000) is arranged may be formed in a transparent region (11) of glass (10). A second region (1100b), such as a flexible circuit board, may be formed in an opaque region (12) of glass (10). The cable (CL) may include a signal line (111c) in an inner region, a ground (112c) in an outer region, and a dielectric region (110d) formed between the signal line (111c) and the ground (112c). The signal line (111c) of the cable (CL) may be connected to a feed line formed in the second region (1100b) through a soldering structure (112s). The signal line (111c) of the cable (CL) may be electrically connected to the antenna (1000) of the first region (1100a) through the soldering structure (112s). The inner cover (8) can be opposite the glass panel (10) with respect to the frame (9) and can cover a connection module implemented with a cable (CL). The inner cover (8) can be referred to as an interior cover (8).

[0071] Hereinafter, a vehicle antenna according to the present specification will be described in detail with reference to the drawings. FIG. 5 illustrates a vehicle antenna and radiation patterns disposed on a vehicle rear window glass and a quarter window glass. Referring to FIG. 5, a vehicle (1) may have a front window glass (310), a rear window glass (330), and first and second quarter window glasses (340a, 340b). A first group of multiple antennas (1100a) may be disposed on the rear window glass (330). A second group of multiple antennas (1100b) may be disposed on the first and second quarter window glasses (340a, 340b). Unlike the other side window glasses, the first and second quarter window glasses (340a, 340b) are fixedly installed so that the glass does not open.

[0072] The first radiation patterns (RP1, RP2) of the plurality of antennas (1100a) of the first group may be formed differently from the second radiation pattern (RP3) of at least one of the plurality of antennas (1100b) of the second group. The first radiation directions (D1, P2) of the first radiation patterns (RP1, RP2) may be formed differently from the second radiation directions (D3) of the second radiation patterns (RP3). Accordingly, mutual interference between the plurality of antennas (1100a) of the first group that radiate signals toward the rear of the vehicle (1) and the plurality of antennas (1100b) of the second group that radiate signals toward one side can be reduced.

[0073] The first radiation pattern (RP1, RP2) of the plurality of antennas (1100a) of the first group may be formed differently from the third radiation pattern (RP4) of the remaining plurality of antennas (1100b) of the second group. The first radiation direction (D1, P2) of the first radiation pattern (RP1, RP2) may be formed differently from the third radiation direction (D4) of the third radiation pattern (RP4). Accordingly, mutual interference between the plurality of antennas (1100a) of the first group that radiate signals toward the rear of the vehicle (1) and the plurality of antennas (1100b) of the second group that radiate signals toward the other side can be reduced.

[0074] FIG. 6 illustrates vehicle antennas and radiation patterns disposed on the front window glass and side window glass of a vehicle. Referring to FIG. 6, a vehicle (1) may include a front window glass (310), first and second side window glasses (320a, 320b), and a rear window glass (330). A first group of multiple antennas (1100a) may be disposed on the front window glass (310). A second group of multiple antennas (1100b) may be disposed on the first and second side window glasses (320a, 320b). The second group of multiple antennas (1100b) may be disposed on the upper portions of the first and second side window glasses (320a, 320b) so as to operate even when the first and second side window glasses (320a, 320b) are partially open.

[0075] The first and second side window glasses (320a, 320b) of FIG. 6 may be replaced with the first and second quarter window glasses (340a, 340b) of FIG. 5. Unlike the other side window glasses, the first and second quarter window glasses (340a, 340b) are installed in a fixed manner so that the glass does not open.

[0076] The first radiation patterns (RPb1, RPb2) of the plurality of antennas (1100a) of the first group may be formed differently from the second radiation pattern (RPb3) of at least one of the plurality of antennas (1100b) of the second group. The first radiation directions (Db1, Pb2) of the first radiation patterns (RP1b, RP2b) may be formed differently from the second radiation directions (Db3) of the second radiation patterns (RPb3). Accordingly, mutual interference between the plurality of antennas (1100a) of the first group that radiate signals toward the front of the vehicle (1) and the plurality of antennas (1100b) of the second group that radiate signals toward one side can be reduced.

[0077] The first radiation patterns (RPb1, RPb2) of the plurality of antennas (1100a) of the first group may be formed differently from the third radiation patterns (RPb4) of the remaining plurality of antennas (1100b) of the second group. The first radiation directions (Db1, Pb2) of the first radiation patterns (RPb1, RPb2) may be formed differently from the third radiation directions (Db4) of the third radiation patterns (RPb4). Accordingly, mutual interference between the plurality of antennas (1100a) of the first group that radiate signals toward the front of the vehicle (1) and the plurality of antennas (1100b) of the second group that radiate signals toward the other side can be reduced.

[0078] Meanwhile, the antennas placed on the front window glass (310) or the rear window glass (330) of the vehicle may be composed of multiple antennas. The antennas placed on the first and second side window glasses (320a, 320b) or the first and second quarter window glasses (340a, 340b) on the sides of the vehicle may also be composed of multiple antennas.

[0079] In this regard, Fig. 7 shows a block diagram of antennas arranged on the rear window glass of the vehicle of Fig. 5 or the front window glass of the vehicle of Fig. 6. Fig. 8 shows a block diagram of antennas arranged on the first and second quarter window glass of the vehicle of Fig. 5 or the first and second side window glass of the vehicle of Fig. 6. Fig. 9 shows the arrangement structure of antennas arranged on the rear window glass of the vehicle of Fig. 5.

[0080] Referring to FIGS. 5, 7, and 9, a vehicle antenna (1000) according to the present specification will be described. The vehicle antenna (1000) may include a plurality of MIMO (multiple input and multiple output) antenna elements arranged on different window panes of a vehicle (1). The vehicle (1) may have a front window pane (310), a rear window pane (330), and first and second quarter window panes (340a, 340b).

[0081] A vehicle antenna (1000) may include a first group of multiple antennas (1100a) and a second group of multiple antennas (1100b). The first group of multiple antennas (1100a) may be disposed on a rear window glass (330) and may operate as a MIMO (multiple input and multiple output) antenna. The second group of multiple antennas (1100b) may be disposed on the first and second quarter window glasses (340a, 340b) and may operate as a MIMO antenna. The first group of multiple antennas (1100a) may be referred to as a primary MIMO antenna. The second group of multiple antennas (1100b) may be referred to as a secondary MIMO antenna.

[0082] At least one of the plurality of antennas (1100b) of the second group may be disposed on the first quarter window glass (340a). The remaining plurality of antennas of the second group may be disposed on the second quarter window glass (340b). The first auxiliary group antennas (1100b1) of the plurality of antennas (1100b) of the second group may be disposed on the first quarter window glass (340a). The second auxiliary group antennas (1100b2) of the plurality of antennas (1100b) of the second group may be disposed on the second quarter window glass (340b).

[0083] The radiation signals of the plurality of antennas (1100a) of the first group form first radiation patterns (RP1, RP2). The radiation signals of the plurality of antennas (1100b) of the second group form second and third radiation patterns (RP3, RP4). The radiation signals of the plurality of antennas (1100a) of the first group may be formed to have a first radiation direction (D1, D2). The radiation signals of the first auxiliary group antennas (1100b1) of the plurality of antennas (1100b) of the second group may be formed to have a second radiation direction (D3). The radiation signals of the second auxiliary group antennas (1100b2) of the plurality of antennas (1100b) of the second group may be formed to have a third radiation direction (D4). The first radiation directions (D1, D2), the second radiation direction (D3), and the third radiation direction (D4) may be formed differently from each other.

[0084] The radiation direction of the radiation signal corresponds to a beam peak region where the beam pattern level of the radiation signal has a peak value. In the first radiation direction (D1) of the first radiation pattern (RP1), the beam pattern level of the second radiation pattern (RP3) has a value below a threshold, thereby reducing mutual interference. In the first radiation direction (D2) of the first radiation pattern (RP2), the beam pattern level of the third radiation pattern (RP4) has a value below a threshold, thereby reducing mutual interference.

[0085] Each of the first group of antennas (1100a), the first auxiliary group antennas (1100b1), and the second auxiliary group antennas (1100b2) may have at least one transmitting antenna. In this regard, at least one transmitting antenna of the first group of antennas (1100a) may correspond to at least one of the first antenna (ANT1) transmitting the first signal and the second antenna (ANT2) transmitting the second signal. At least one transmitting antenna of the first auxiliary group antennas (1100b1) may correspond to the fifth antenna (ANT5) transmitting the fifth signal. At least one transmitting antenna of the second auxiliary group antennas (1100b2) may correspond to the seventh antenna (ANT5) transmitting the seventh signal.

[0086] Meanwhile, a vehicle antenna according to the present specification may be configured to support 2X2 MIMO or 4X4 MIMO. In this regard, FIG. 10 shows a configuration of a vehicle antenna supporting 2X2 MIMO. FIG. 11 shows a block diagram of antennas disposed on a rear window glass or a front window glass supporting 2X2 MIMO of FIG. 10. FIG. 12 shows a block diagram of antennas disposed on a quarter window glass or a side window glass supporting 2X2 MIMO of FIG. 10. FIG. 13 shows a configuration of a vehicle antenna supporting 4X4 MIMO.

[0087] Referring to FIG. 10, a plurality of antennas (1100a) of a first group may be disposed on a rear window glass (330). A plurality of antennas (1100b) of a second group may be disposed on the first and second quarter window glass (340a, 340b). The first and second RKE antennas (RKE1, RKE2) may be disposed on the vehicle glass or inside the vehicle. A Network Access Device (NAD) (1400) may be disposed in the TCU (200). Referring to FIGS. 8 to 10, the NAD (1400) may include a first transceiver (1410) and a second transceiver (1420).

[0088] Referring to FIG. 11, a plurality of antennas (1100a) of a first group may be arranged on a rear window glass (330) or a front window glass (310). The plurality of antennas (1100a) of the first group may include a first antenna (ANT1) and a second antenna (ANT2). The first antenna (ANT1) and the second antenna (ANT2) may be configured as TRX antennas, but are not limited thereto, and may include RX antennas depending on the application.

[0089] A vehicle antenna (1000, 1000b) supporting 2X2 MIMO may further include a first TRX module (1210) operably coupled with a first antenna (ANT1) and a second TRX module (1220) operably coupled with a second antenna (ANT2). The vehicle antenna (1000, 1000b) may further include a switch (210S) for controlling a connection state between the first antenna (ANT1) and the second antenna (ANT2) and the first TRX module (1210) and the second TRX module (1220). The vehicle antenna (1000, 1000b) may further include a first transceiver module (1410) operably coupled with the first TRX module (1210) and the second TRX module (1220). The vehicle antenna (1000, 1000b) may further include a GNSS antenna (1310) and first and second WiFi antennas (1320a, 1320b).

[0090] Referring to FIG. 12, a plurality of antennas (1100b) of a second group may be arranged on the first and second quarter window glasses (340a, 340b) or the first and second side window glasses (320a, 320b). The plurality of antennas (1100b) of the second group may include a fifth antenna (ANT5) and a seventh antenna (ANT7). The vehicle antenna (1000, 1000b) supporting 2X2 MIMO may further include a third TRX module (1250) operably coupled with the fifth antenna (ANT5) and a fourth TRX module (1270) operably coupled with the seventh antenna (ANT7). The vehicle antenna (1000, 1000b) may further include a second switch (22S0) that controls the connection status with the fifth antenna (ANT5) and the seventh antenna (ANT7) and the third TRX module (1250) and the fourth TRX module (1270). The vehicle antenna (1000, 1000b) may further include a second transceiver module (1420) that is operably coupled with the third TRX module (1250) and the fourth TRX module (1270).

[0091] Referring to FIGS. 5, 7, and 12, a vehicle antenna (1000) supporting 2X2 MIMO is described. The vehicle antenna (1000) may include a plurality of antennas (1100a) of a first group and a plurality of antennas (1100b) of a second group.

[0092] A plurality of antennas (1100a) of a first group may include a first antenna (ANT1) and a second antenna (ANT2). The vehicle antenna (1000) may support 2X2 MIMO operation using the first antenna (ANT1) and the second antenna (ANT2) disposed on the rear window glass (330). The first antenna (ANT1) may be configured to primarily transmit and receive a first signal. The second antenna (ANT2) may be configured to primarily transmit and receive a second signal.

[0093] The plurality of antennas (1100b) of the second group may include a fifth antenna (ANT5) and a seventh antenna (ANT7). The vehicle antenna (1000) may support 2X2 MIMO operation using the fifth antenna (ANT5) and the seventh antenna (ANT7) disposed on the first and second quarter window glasses (340a, 340b). The fifth antenna (ANT5) may be configured to primarily transmit and receive a fifth signal. The seventh antenna (ANT7) may be configured to primarily transmit and receive a seventh signal.

[0094] In this regard, a first SIM (Subscriber Identity Module) may be implemented through a first antenna (ANT1) and a second antenna (ANT2) disposed on the rear window glass (330). A second SIM may be implemented through a fifth antenna (ANT5) and a sixth antenna (ANT6) disposed on the first and second quarter window glass (340, 350). Accordingly, parallel operation of a plurality of cellular transceivers within the vehicle may be implemented. Simultaneous wireless communication access is possible within the vehicle. For example, parallel operation of DSDA (Dual Sim Dual Active) may be implemented, in which wireless communication access is implemented with passengers' mobile terminals and entities outside the vehicle at the same time.

[0095] For low-tier (entry) TCUs, it can support cellular (2x2 MIMO) / GNSS / SDARS / WiFi / RKE (or lower configurations), etc. The cellular 2x2 MIMO and GNSS antennas can be configured as transparent antennas for vehicles. In addition, the RKE antenna can be replaced with a transparent antenna mounted between the steering wheel and dashboard of the vehicle or attached to the vehicle window. The SDARS antenna can be implemented as a ceramic patch antenna within the TCU.

[0096] For high-tier TCUs, it can support cellular (4x4 MIMO) / GNSS / SDARS / V2X / WiFi (2x2 MIMO) / RKE (or more configurations), etc. Antennas that require additional configuration can be configured as transparent antennas. Therefore, for high-tier TCUs that inevitably involve an increase in antennas, it is possible to design a configuration that can link multiple antennas without increasing the TCU size.

[0097] Even when applying additional wireless communication technologies in addition to high-tier TCU configurations, new wireless communication services utilizing transparent vehicle antennas can be implemented. Even in this case, the number of antennas can be increased without changing the TCU size. In particular, the utility of transparent antennas can be further maximized when supporting services beyond cellular 4x4 MIMO (e.g., DSDA, Massive MIMO). Furthermore, the utility of transparent antennas is highly advantageous for implementing additional functions beyond cellular 4x4 MIMO, greatly enhancing the scalability of TCU and antenna configurations.

[0098] With reference to FIG. 11 in relation to the high-tier TCU, a first group of multiple antennas (1100a) may be disposed on the rear window glass (330). A second group of multiple antennas (1100b) may be disposed on the first and second quarter window glasses (340a, 340b). A V2X antenna may be disposed on the vehicle glass or inside the vehicle. A first and second Wi-Fi antenna (1320a, 1320b) may be disposed on the vehicle glass or inside the vehicle. A first and second RKE antenna (RKE1, RKE2) may be disposed on the vehicle glass or inside the vehicle. A Network Access Device (NAD) (1400) may be disposed in the TCU (200). With reference to FIGS. 8 to 11, the NAD (1400) may include a first transceiver (1410) and a second transceiver (1420).

[0099] Referring to FIGS. 5, 7 to 9, and 11, a vehicle antenna (1000) supporting 4X4 MIMO is described. The vehicle antenna (1000) may include a plurality of antennas (1100a) of a first group and a plurality of antennas (1100b) of a second group.

[0100] A plurality of antennas (1100a) of the first group may be configured to include a first antenna (ANT1), a second antenna (ANT2), a third antenna (ANT3), and a fourth antenna (ANT4). The first antenna (ANT1) may be configured to primarily transmit and receive a first signal. The second antenna (ANT2) may be configured to primarily transmit and receive a second signal. The third antenna (ANT3) may be configured to receive a third signal. The fourth antenna (ANT4) may be configured to receive a fourth signal.

[0101] The first antenna (ANT1) and the third antenna (ANT3) may be disposed in a first area (330R1) of the rear window glass (330). The second antenna (ANT2) and the fourth antenna (ANT4) may be disposed in a second area (330R2) of the rear window glass (330). The first area (330R1) of the rear window glass (330) may be defined as a left area of ​​the rear window glass (330). The second area (330R2) of the rear window glass (330) may be defined as a right area of ​​the rear window glass (330).

[0102] The second group of multiple antennas (1100b) may be configured to include a fifth antenna (ANT5), a sixth antenna (ANT6), a seventh antenna (ANT7), and an eighth antenna (ANT8). The fifth antenna (ANT5) may be configured to primarily transmit and receive a fifth signal. The sixth antenna (ANT6) may be configured to receive a sixth signal. The seventh antenna (ANT7) may be configured to primarily transmit and receive a seventh signal. The eighth antenna (ANT8) may be configured to receive an eighth signal.

[0103] The fifth antenna (ANT5) and the sixth antenna (ANT6) may be positioned on the first quarter window glass (340a). The seventh antenna (ANT7) and the eighth antenna (ANT8) may be positioned on the second quarter window glass (340b).

[0104] Meanwhile, the vehicle antenna module (1000) according to the present specification may include a plurality of RF modules operably coupled with a plurality of antennas (1100a) of the first group. In this regard, the vehicle antenna module (1000) may be configured to further include a first TRX module (1210), a second TRX module (1220), a switch (210S), a first RX module (1230), a second RX module (1240), and a first transceiver (1410).

[0105] A first TRX module (1210) may be operatively coupled with a first antenna (ANT1). The first TRX module (1210) may amplify and process a first signal received from the first antenna (ANT1) and transmit the processed and amplified first signal through the first antenna (ANT1). A second TRX module (1220) may be operatively coupled with a second antenna (ANT2). The second TRX module (1220) may amplify and process a second signal received from the second antenna (ANT2) and transmit the processed and amplified second signal through the second antenna (ANT2). A switch (210S) may be disposed between the first and second antennas (ANT1, ANT2) and the first and second TRX modules (1210, 1220). The switch (210S) may be configured to control a path along which the first and second antennas (ANT1, ANT2) are connected.

[0106] A first RX module (1230) may be operatively coupled with a third antenna (ANT3). The first RX module (1230) may amplify and process a third signal received from the third antenna (ANT3). A second RX module (1240) may be operatively coupled with a fourth antenna (ANT4). The second RX module (1240) may amplify and process a fourth signal received from the fourth antenna (ANT4). A first transceiver (1410) may be operatively coupled with the first and second TRX modules (1210, 1220) and the first and second RX modules (1230, 1240). The first transceiver (1410) may work with the first SIM to enable wireless communication between entities outside the vehicle and components within the vehicle.

[0107] Meanwhile, the antenna operation and arrangement structure disposed on the rear window glass (330) in the vehicle antenna according to the present specification will be described. The first antenna (ANT1) may be configured to operate in a first frequency band, a second frequency band higher than the first frequency band, and a third frequency band higher than the second frequency band. The second antenna (ANT2) may be configured to operate in the same frequency band as the first antenna (ANT1). The second antenna (ANT2) may be configured to operate in the first frequency band, the second frequency band, and the third frequency band.

[0108] The third antenna (ANT3) may be configured to operate in a second frequency band and a third frequency band. The fourth antenna (ANT4) may be configured to operate in the same frequency band as the third antenna (ANT3). The fourth antenna (ANT4) may be configured to operate in the second frequency band and the third frequency band. Meanwhile, the first frequency band may be set to 0.6 to 0.96 GHz (or 1 GHz) as a low band (LB) for 4G / 5G wireless communication. The second frequency band may be set to 1.4 to 4.5 GHz as a mid band (MB) and high band (HB) for 4G / 5G wireless communication. The third frequency band may be set to 4.5 to 6 GHz as an ultra high band (UHB) for 4G / 5G wireless communication.

[0109] The switch (210S) may be configured such that the first and second input terminals (IN1, IN2) are connected to the first and second antennas (ANT1, ANT2). The switch (210S) may be configured such that the first and second input terminals (IN1, IN2) are connected to the first and second antennas (ANT1, ANT2).

[0110] The switch (210S) can be configured to select one of the first antenna (ANT1) and the second antennas (ANT2). The switch (210S) can control the connection status between the first and second antennas (ANT1, ANT2) and the first and second TRX modules (1210, 1220). The switch (210S) can be implemented as a DPDT (Double Pole Double Throw) switch that switches paths between the first and second input terminals (IN1, IN2) and the first and second output terminals (OUT1, OUT2), but is not limited thereto and can be changed according to the application.

[0111] As the first input terminal (IN1) of the switch (210) is connected to the first output terminal (OUT1) and the second input terminal (IN2) is connected to the second output terminal (OUT2), the first and second antennas (ANT1, ANT2) can operate simultaneously to perform a MIMO operation. The plurality of antennas (1100a) of the first group can transmit and receive the first and second signals through the first and second antennas (ANT1, ANT2) to perform a MIMO operation in the rear direction of the vehicle (1). The plurality of antennas (1100a) of the first group can perform a MIMO operation in the first frequency band to the third frequency band in the front direction of the vehicle (1).

[0112] Meanwhile, the vehicle antenna module (1000) according to the present specification may include a plurality of RF modules operably coupled with a plurality of antennas (1100b) of the second group. In this regard, the vehicle antenna module (1000) may be configured to further include a third TRX module (1250), a fourth TRX module (1260), a switch (220S), a third RX module (1270), a fourth RX module (1280), and a second transceiver (1420).

[0113] The third TRX module (1250) may be operatively coupled with the fifth antenna (ANT5). The third TRX module (1250) may amplify and process a fifth signal received from the fifth antenna (ANT5) and transmit the processed and amplified fifth signal through the fifth antenna (ANT5). The fourth TRX module (1260) may be operatively coupled with the seventh antenna (ANT7). The fourth TRX module (1260) may amplify and process a second signal received from the seventh antenna (ANT7) and transmit the processed and amplified signal through the seventh antenna (ANT7). A second switch (220S) may be disposed between the fifth and seventh antennas (ANT5, ANT7) and the third and fourth TRX modules (1230, 1240). The second switch (220S) may be configured to control a path along which the fifth and seventh antennas (ANT5, ANT7) are connected.

[0114] The third RX module (1270) may be operatively coupled with the sixth antenna (ANT6). The third RX module (1270) may amplify and process a sixth signal received from the sixth antenna (ANT6). The fourth RX module (1270) may be operatively coupled with the eighth antenna (ANT8). The second RX module (1240) may amplify and process a fourth signal received from the eighth antenna (ANT8). The second transceiver (1420) may be operatively coupled with the third and fourth TRX modules (1230, 1240) and the third and fourth RX modules (1270, 1280). The second transceiver (1420) may work with the second SIM to enable wireless communication between entities outside the vehicle and mobile terminals within the vehicle.

[0115] Meanwhile, the antenna operation and arrangement structure arranged on the first and second quarter window glasses (340a, 340b) in the vehicle antenna according to the present specification will be described. The fifth antenna (ANT5) can be configured to operate in a first frequency band, a second frequency band higher than the first frequency band, and a third frequency band higher than the second frequency band. The seventh antenna (ANT7) can be configured to operate in the same frequency band as the fifth antenna (ANT5). The seventh antenna (ANT7) can be configured to operate in the first frequency band, the second frequency band, and the third frequency band.

[0116] The sixth antenna (ANT6) may be configured to operate in a second frequency band and a third frequency band. The eighth antenna (ANT8) may be configured to operate in the same frequency band as the sixth antenna (ANT6). The eighth antenna (ANT8) may be configured to operate in a second frequency band and a third frequency band. Meanwhile, the first frequency band may be set to 0.6 to 0.96 GHz (or 1 GHz) as a low band (LB) for 4G / 5G wireless communication. The second frequency band may be set to 1.4 to 4.5 GHz as a mid band (MB) and high band (HB) for 4G / 5G wireless communication. The third frequency band may be set to 4.5 to 6 GHz as an ultra high band (UHB) for 4G / 5G wireless communication.

[0117] The second switch (220S) may be configured such that the first and second input terminals (IN1, IN2) are connected to the fifth and seventh antennas (ANT5, ANT7). The second switch (220S) may be configured such that the first and second input terminals (IN1, IN2) are connected to the fifth and seventh antennas (ANT5, ANT7).

[0118] The second switch (220S) can be configured to select one of the fifth and seventh antennas (ANT5, ANT7). The second switch (220S) can control the connection status between the fifth and seventh antennas (ANT5, ANT7) and the third and fourth TRX modules (1230, 1240). The second switch (220S) can be implemented as a DPDT (Double Pole Double Throw) switch that switches paths between the first and second input terminals (IN1, IN2) and the first and second output terminals (OUT1, OUT2), but is not limited thereto and can be changed according to the application.

[0119] As the first input terminal (IN1) of the second switch (220S) is connected to the first output terminal (OUT1) and the second input terminal (IN2) is connected to the second output terminal (OUT2), the fifth and seventh antennas (ANT5, ANT7) can operate simultaneously to perform a MIMO operation. The plurality of antennas (1100b) of the second group can transmit and receive the fifth and seventh signals through the fifth and seventh antennas (ANT5, ANT7) to perform a MIMO operation in the lateral direction of the vehicle (1). The plurality of antennas (1100b) of the second group can perform a MIMO operation in the first frequency band to the third frequency band in the lateral direction of the vehicle (1).

[0120] Meanwhile, the vehicle antenna (1000) according to the present specification may be configured to include various antennas in addition to MIMO antenna elements. The vehicle antenna (1000) may be configured to further include a GNSS antenna (1310), a first WiFi antenna (1320a), and a second WiFi antenna (1320b).

[0121] A GNSS antenna (1310), a first WiFi antenna (1320a), and a second WiFi antenna (1320b) may be disposed on the rear window glass (330). The GNSS antenna (1310) may be disposed between a first antenna (ANT1) and a second antenna (ANT2) of the rear window glass (330). The first WiFi antenna (1320a) may be disposed between a first antenna (ANT1) and a third antenna (ANT3) of the rear window glass (330). The second WiFi antenna (1320b) may be disposed between a second antenna (ANT2) and a fourth antenna (ANT4) of the rear window glass (330). In this regard, FIG. 14 illustrates a block diagram of antennas disposed on the lower window glass, the first and second quarter window glasses, and the upper glass.

[0122] Referring to FIG. 14, a vehicle antenna (1000) may include a plurality of antennas (1100a) of a first group, a plurality of antennas (1100b) of a second group, a GNSS antenna (1310b), first and second WiFi antennas (1320a, 1320b), and a NTN (Non-Terrestrial Networks) antenna (1330). The NTN antenna (1330) may be a satellite antenna that transmits and receives signals from satellites. The NTN antenna (1330), which is a satellite antenna that transmits and receives signals from satellites, may be an array antenna.

[0123] Referring to FIGS. 5, 7 to 9, and 11 to 14, the GNSS antenna (1310b) may be disposed on the upper glass (350), and the first WiFi antenna (1320a) and the second WiFi antenna (1320b) may be disposed on the first and second quarter window glasses (340a, 340b). The GNSS antenna (1310b) may be disposed on the upper glass (350) of the upper roof of the vehicle. The GNSS antenna (1310b) may be disposed at a central portion between the first antenna (ANT1) and the second antenna (ANT2).

[0124] The first WiFi antenna (1320a) may be positioned between the fifth antenna (ANT5) and the sixth antenna (ANT6) of the first quarter window glass (340a). The fifth antenna (ANT5) and the sixth antenna (ANT6) may be formed in a transparent area of ​​the first quarter window glass (340a). The first WiFi antenna (1320a) may be positioned in an opaque area of ​​the first quarter window glass (340a). The first WiFi antenna (1320a) may be formed in a slot antenna structure on an FPCB positioned in the opaque area of ​​the first quarter window glass (340a).

[0125] The second WiFi antenna (1320b) may be positioned between the seventh antenna (ANT7) and the eighth antenna (ANT8) of the second quarter window glass (340b). The seventh antenna (ANT7) and the eighth antenna (ANT8) may be formed in a transparent area of ​​the second quarter window glass (340b). The second WiFi antenna (1320b) may be positioned in an opaque area of ​​the second quarter window glass (340b). The second WiFi antenna (1320b) may be formed in a slot antenna structure on an FPCB positioned in the opaque area of ​​the second quarter window glass (340b).

[0126] Meanwhile, the vehicle antenna according to the present specification may be formed into a structure disposed on the front window glass and the first and second quarter window glass. In this regard, FIG. 15 illustrates a block diagram of antennas disposed on the front window glass of the vehicle of FIG. 6.

[0127] Referring to FIGS. 6 to 8 to 13 and 15, a vehicle antenna (1000b) disposed on a front window glass and first and second quarter window glasses will be described. The vehicle antenna (1000b) may include a plurality of MIMO (multiple input and multiple output) antenna elements disposed on different window glasses of the vehicle (1). The vehicle (1) may have a front window glass (310), a rear window glass (330), and first and second side window glasses (320a, 320b).

[0128] A vehicle antenna (1000b) may include a first group of multiple antennas (1100a) and a second group of multiple antennas (1100b). The first group of multiple antennas (1100a) may be disposed on the front window glass (310) and may operate as a MIMO (multiple input and multiple output) antenna. The second group of multiple antennas (1100b) may be disposed on the first and second side window glasses (320a, 320b) and may operate as a MIMO antenna. The first group of multiple antennas (1100a) may be referred to as a primary MIMO antenna. The second group of multiple antennas (1100b) may be referred to as a secondary MIMO antenna.

[0129] At least one of the plurality of antennas (1100b) of the second group may be disposed on the first quarter window glass (340a). The remaining plurality of antennas of the second group may be disposed on the second quarter window glass (340b). The first auxiliary group antennas (1100b1) of the plurality of antennas (1100b) of the second group may be disposed on the first side window glass (320a). The second auxiliary group antennas (1100b2) of the plurality of antennas (1100b) of the second group may be disposed on the second quarter window glass (320b).

[0130] The radiation signals of the plurality of antennas (1100a) of the first group form first radiation patterns (RPb1, RPb2). The radiation signals of the plurality of antennas (1100b) of the second group form second and third radiation patterns (RPb3, RPb4). The radiation signals of the plurality of antennas (1100a) of the first group may be formed to have a first radiation direction (Db1, Db2). The radiation signals of the first auxiliary group antennas (1100b1) among the plurality of antennas (1100b) of the second group may be formed to have a second radiation direction (Db3). The radiation signals of the second auxiliary group antennas (1100b2) among the plurality of antennas (1100b) of the second group may be formed to have a third radiation direction (Db4). The first radiation direction (Db1, Db2), the second radiation direction (Db3) and the third radiation direction (Db4) can be formed differently from each other.

[0131] The radiation direction of the radiation signal corresponds to a beam peak region where the beam pattern level of the radiation signal has a peak value. In the first radiation direction (Db1) of the first radiation pattern (RPb1), the beam pattern level of the second radiation pattern (RPb3) has a value below a threshold, thereby reducing mutual interference. In the first radiation direction (Db2) of the first radiation pattern (RPb2), the beam pattern level of the third radiation pattern (RPb4) has a value below a threshold, thereby reducing mutual interference.

[0132] Each of the first group of antennas (1100a), the first auxiliary group antennas (1100b1), and the second auxiliary group antennas (1100b2) may have at least one transmitting antenna. In this regard, at least one transmitting antenna of the first group of antennas (1100a) may correspond to at least one of the first antenna (ANT1) transmitting the first signal and the second antenna (ANT2) transmitting the second signal. At least one transmitting antenna of the first auxiliary group antennas (1100b1) may correspond to the fifth antenna (ANT5) transmitting the fifth signal. At least one transmitting antenna of the second auxiliary group antennas (1100b2) may correspond to the seventh antenna (ANT5) transmitting the seventh signal.

[0133] Meanwhile, a vehicle antenna according to the present specification may be configured to support 2X2 MIMO or 4X4 MIMO. Referring to FIGS. 6 to 8 and FIG. 11, a vehicle antenna (1000b) supporting 2X2 MIMO will be described. The vehicle antenna (1000b) may include a plurality of antennas (1100a) of a first group and a plurality of antennas (1100b) of a second group.

[0134] A plurality of antennas (1100a) of a first group may include a first antenna (ANT1) and a second antenna (ANT2). A vehicle antenna (1000b) may support 2X2 MIMO operation using the first antenna (ANT1) and the second antenna (ANT2) disposed on the front window glass (310). The first antenna (ANT1) may be configured to primarily transmit and receive a first signal. The second antenna (ANT2) may be configured to primarily transmit and receive a second signal.

[0135] The plurality of antennas (1100b) of the second group may include a fifth antenna (ANT5) and a seventh antenna (ANT7). The vehicle antenna (1000) may support 2X2 MIMO operation using the fifth antenna (ANT5) and the seventh antenna (ANT7) arranged on the first and second side window glasses (320a, 320b). The fifth antenna (ANT5) may be configured to primarily transmit and receive a fifth signal. The seventh antenna (ANT7) may be configured to primarily transmit and receive a seventh signal.

[0136] In this regard, a first SIM (Subscriber Identity Module) may be implemented through a first antenna (ANT1) and a second antenna (ANT2) disposed on the front window glass (310). A second SIM may be implemented through a fifth antenna (ANT5) and a sixth antenna (ANT6) disposed on the first and second side window glass (320a, 320b). Accordingly, parallel operation of a plurality of cellular transceivers within the vehicle may be implemented. Simultaneous wireless communication access is possible within the vehicle. For example, parallel operation of DSDA (Dual Sim Dual Active) may be implemented, in which wireless communication access is implemented with passengers' mobile terminals and entities outside the vehicle at the same time.

[0137] Referring to FIGS. 6 to 8, 11, and 15, a vehicle antenna (1000b) supporting 4X4 MIMO is described. The vehicle antenna (1000b) may include a plurality of antennas (1100a) of a first group and a plurality of antennas (1100b) of a second group.

[0138] A plurality of antennas (1100a) of the first group may be configured to include a first antenna (ANT1), a second antenna (ANT2), a third antenna (ANT3), and a fourth antenna (ANT4). The first antenna (ANT1) may be configured to primarily transmit and receive a first signal. The second antenna (ANT2) may be configured to primarily transmit and receive a second signal. The third antenna (ANT3) may be configured to receive a third signal. The fourth antenna (ANT4) may be configured to receive a fourth signal.

[0139] The first antenna (ANT1) and the third antenna (ANT3) may be arranged in a first area (310R1) of the front window glass (310). The second antenna (ANT2) and the fourth antenna (ANT4) may be arranged in a second area (310R2) of the front window glass (310). The first area (310R1) of the front window glass (310) may be defined as a left area of ​​the front window glass (310). The second area (310R2) of the front window glass (310) may be defined as a right area of ​​the front window glass (310).

[0140] The second group of multiple antennas (1100b) may be configured to include a fifth antenna (ANT5), a sixth antenna (ANT6), a seventh antenna (ANT7), and an eighth antenna (ANT8). The fifth antenna (ANT5) may be configured to primarily transmit and receive a fifth signal. The sixth antenna (ANT6) may be configured to receive a sixth signal. The seventh antenna (ANT7) may be configured to primarily transmit and receive a seventh signal. The eighth antenna (ANT8) may be configured to receive an eighth signal.

[0141] The fifth antenna (ANT5) and the sixth antenna (ANT6) may be positioned on the first side window glass (320a). The seventh antenna (ANT7) and the eighth antenna (ANT8) may be positioned on the second side window glass (320b).

[0142] Meanwhile, the vehicle antenna module (1000b) according to the present specification may include a plurality of RF modules operably coupled with a plurality of antennas (1100a) of the first group. In this regard, the vehicle antenna module (1000b) may be configured to further include a first TRX module (1210), a second TRX module (1220), a switch (210S), a first RX module (1230), a second RX module (1240), and a first transceiver (1410).

[0143] A first TRX module (1210) may be operatively coupled with a first antenna (ANT1). The first TRX module (1210) may amplify and process a first signal received from the first antenna (ANT1) and transmit the processed and amplified first signal through the first antenna (ANT1). A second TRX module (1220) may be operatively coupled with a second antenna (ANT2). The second TRX module (1220) may amplify and process a second signal received from the second antenna (ANT2) and transmit the processed and amplified second signal through the second antenna (ANT2). A switch (210S) may be disposed between the first and second antennas (ANT1, ANT2) and the first and second TRX modules (1210, 1220). The switch (210S) may be configured to control a path along which the first and second antennas (ANT1, ANT2) are connected.

[0144] A first RX module (1230) may be operatively coupled with a third antenna (ANT3). The first RX module (1230) may amplify and process a third signal received from the third antenna (ANT3). A second RX module (1240) may be operatively coupled with a fourth antenna (ANT4). The second RX module (1240) may amplify and process a fourth signal received from the fourth antenna (ANT4). A first transceiver (1410) may be operatively coupled with the first and second TRX modules (1210, 1220) and the first and second RX modules (1230, 1240). The first transceiver (1410) may work with the first SIM to enable wireless communication between entities outside the vehicle and components within the vehicle.

[0145] Meanwhile, the antenna operation and arrangement structure arranged on the front window glass (310) in the vehicle antenna according to the present specification will be described. The first antenna (ANT1) can be configured to operate in a first frequency band, a second frequency band higher than the first frequency band, and a third frequency band higher than the second frequency band. The second antenna (ANT2) can be configured to operate in the same frequency band as the first antenna (ANT1). The second antenna (ANT2) can be configured to operate in the first frequency band, the second frequency band, and the third frequency band.

[0146] The third antenna (ANT3) may be configured to operate in a second frequency band and a third frequency band. The fourth antenna (ANT4) may be configured to operate in the same frequency band as the third antenna (ANT3). The fourth antenna (ANT4) may be configured to operate in the second frequency band and the third frequency band. Meanwhile, the first frequency band may be set to 0.6 to 0.96 GHz (or 1 GHz) as a low band (LB) for 4G / 5G wireless communication. The second frequency band may be set to 1.4 to 4.5 GHz as a mid band (MB) and high band (HB) for 4G / 5G wireless communication. The third frequency band may be set to 4.5 to 6 GHz as an ultra high band (UHB) for 4G / 5G wireless communication.

[0147] The switch (210S) may be configured such that the first and second input terminals (IN1, IN2) are connected to the first and second antennas (ANT1, ANT2). The switch (210S) may be configured such that the first and second input terminals (IN1, IN2) are connected to the first and second antennas (ANT1, ANT2).

[0148] The switch (210S) can be configured to select one of the first antenna (ANT1) and the second antennas (ANT2). The switch (210S) can control the connection status between the first and second antennas (ANT1, ANT2) and the first and second TRX modules (1210, 1220). The switch (210S) can be implemented as a DPDT (Double Pole Double Throw) switch that switches paths between the first and second input terminals (IN1, IN2) and the first and second output terminals (OUT1, OUT2), but is not limited thereto and can be changed according to the application.

[0149] As the first input terminal (IN1) of the switch (210) is connected to the first output terminal (OUT1) and the second input terminal (IN2) is connected to the second output terminal (OUT2), the first and second antennas (ANT1, ANT2) can operate simultaneously to perform a MIMO operation. The plurality of antennas (1100a) of the first group can transmit and receive the first and second signals through the first and second antennas (ANT1, ANT2) to perform a MIMO operation in the front direction of the vehicle (1). The plurality of antennas (1100a) of the first group can perform a MIMO operation in the first frequency band to the third frequency band in the front direction of the vehicle (1).

[0150] Meanwhile, the vehicle antenna module (1000b) according to the present specification may include a plurality of RF modules operably coupled with a plurality of antennas (1100b) of the second group. In this regard, the vehicle antenna module (1000b) may be configured to further include a third TRX module (1250), a fourth TRX module (1260), a switch (220S), a third RX module (1270), a fourth RX module (1280), and a second transceiver (1420).

[0151] The third TRX module (1250) may be operatively coupled with the fifth antenna (ANT5). The third TRX module (1250) may amplify and process a fifth signal received from the fifth antenna (ANT5) and transmit the processed and amplified fifth signal through the fifth antenna (ANT5). The fourth TRX module (1260) may be operatively coupled with the seventh antenna (ANT7). The fourth TRX module (1260) may amplify and process a second signal received from the seventh antenna (ANT7) and transmit the processed and amplified signal through the seventh antenna (ANT7). A second switch (220S) may be disposed between the fifth and seventh antennas (ANT5, ANT7) and the third and fourth TRX modules (1230, 1240). The second switch (220S) may be configured to control a path along which the fifth and seventh antennas (ANT5, ANT7) are connected.

[0152] The third RX module (1270) may be operatively coupled with the sixth antenna (ANT6). The third RX module (1270) may amplify and process a sixth signal received from the sixth antenna (ANT6). The fourth RX module (1270) may be operatively coupled with the eighth antenna (ANT8). The second RX module (1240) may amplify and process a fourth signal received from the eighth antenna (ANT8). The second transceiver (1420) may be operatively coupled with the third and fourth TRX modules (1230, 1240) and the third and fourth RX modules (1270, 1280). The second transceiver (1420) may work with the second SIM to enable wireless communication between entities outside the vehicle and mobile terminals within the vehicle.

[0153] Meanwhile, the antenna operation and arrangement structure arranged on the first and second side window glasses (320a, 320b) in the vehicle antenna according to the present specification will be described. The fifth antenna (ANT5) can be configured to operate in a first frequency band, a second frequency band higher than the first frequency band, and a third frequency band higher than the second frequency band. The seventh antenna (ANT7) can be configured to operate in the same frequency band as the fifth antenna (ANT5). The seventh antenna (ANT7) can be configured to operate in the first frequency band, the second frequency band, and the third frequency band.

[0154] The sixth antenna (ANT6) may be configured to operate in a second frequency band and a third frequency band. The eighth antenna (ANT8) may be configured to operate in the same frequency band as the sixth antenna (ANT6). The eighth antenna (ANT8) may be configured to operate in a second frequency band and a third frequency band. Meanwhile, the first frequency band may be set to 0.6 to 0.96 GHz (or 1 GHz) as a low band (LB) for 4G / 5G wireless communication. The second frequency band may be set to 1.4 to 4.5 GHz as a mid band (MB) and high band (HB) for 4G / 5G wireless communication. The third frequency band may be set to 4.5 to 6 GHz as an ultra high band (UHB) for 4G / 5G wireless communication.

[0155] The second switch (220S) may be configured such that the first and second input terminals (IN1, IN2) are connected to the fifth and seventh antennas (ANT5, ANT7). The second switch (220S) may be configured such that the first and second input terminals (IN1, IN2) are connected to the fifth and seventh antennas (ANT5, ANT7).

[0156] The second switch (220S) can be configured to select one of the fifth and seventh antennas (ANT5, ANT7). The second switch (220S) can control the connection status between the fifth and seventh antennas (ANT5, ANT7) and the third and fourth TRX modules (1230, 1240). The second switch (220S) can be implemented as a DPDT (Double Pole Double Throw) switch that switches paths between the first and second input terminals (IN1, IN2) and the first and second output terminals (OUT1, OUT2), but is not limited thereto and can be changed according to the application.

[0157] As the first input terminal (IN1) of the second switch (220S) is connected to the first output terminal (OUT1) and the second input terminal (IN2) is connected to the second output terminal (OUT2), the fifth and seventh antennas (ANT5, ANT7) can operate simultaneously to perform a MIMO operation. The plurality of antennas (1100b) of the second group can transmit and receive the fifth and seventh signals through the fifth and seventh antennas (ANT5, ANT7) to perform a MIMO operation in the lateral direction of the vehicle (1). The plurality of antennas (1100b) of the second group can perform a MIMO operation in the first frequency band to the third frequency band in the lateral direction of the vehicle (1).

[0158] Meanwhile, the vehicle antenna (1000) according to the present specification may be configured to include various antennas in addition to MIMO antenna elements. The vehicle antenna (1000) may be configured to further include a GNSS antenna (1310), a first WiFi antenna (1320a), and a second WiFi antenna (1320b).

[0159] Referring to FIGS. 6, 7, and 15, a GNSS antenna (1310), a first WiFi antenna (1320a), and a second WiFi antenna (1320b) may be disposed on the front window glass (310). The GNSS antenna (1310) may be disposed between the first antenna (ANT1) and the second antenna (ANT2) of the front window glass (310). The first WiFi antenna (1320a) may be disposed between the first antenna (ANT1) and the third antenna (ANT3) of the front window glass (310). The second WiFi antenna (1320b) may be disposed between the second antenna (ANT2) and the fourth antenna (ANT4) of the front window glass (310).

[0160] Referring to FIG. 14, a vehicle antenna (1000) may include a plurality of antennas (1100a) of a first group, a plurality of antennas (1100b) of a second group, a GNSS antenna (1310b), first and second WiFi antennas (1320a, 1320b), and a NTN (Non-Terrestrial Networks) antenna (1330). The NTN antenna (1330) may be a satellite antenna that transmits and receives signals from satellites. The NTN antenna (1330), which is a satellite antenna that transmits and receives signals from satellites, may be an array antenna.

[0161] Referring to FIGS. 6, 7, and 14, the GNSS antenna (1310) may be disposed on the upper glass (350), and the first WiFi antenna (1320a) and the second WiFi antenna (1320b) may be disposed on the first and second side window glasses (320a, 320b). The GNSS antenna (1310b) may be disposed on the upper glass (350) of the upper roof of the vehicle. The GNSS antenna (1310b) may be disposed at a central portion between the first antenna (ANT1) and the second antenna (ANT2). The first WiFi antenna (1320a) may be disposed between the fifth antenna (ANT5) and the sixth antenna (ANT6) of the first side window glass (320a). The second WiFi antenna (1320b) may be placed between the seventh antenna (ANT7) and the eighth antenna (ANT8) of the second side window glass (320b).

[0162] The first WiFi antenna (1320a) may be disposed between the fifth antenna (ANT5) and the sixth antenna (ANT6) of the first side window glass (320a). The fifth antenna (ANT5) and the sixth antenna (ANT6) may be formed in a transparent area of ​​the first side window glass (320a). The first WiFi antenna (1320a) may be formed in an opaque area of ​​the first side window glass (320a). The first WiFi antenna (1320a) may be formed in a slot antenna structure on an FPCB disposed in the opaque area of ​​the first side window glass (320a).

[0163] The second WiFi antenna (1320b) may be disposed between the seventh antenna (ANT7) and the eighth antenna (ANT8) of the second side window glass (320b). The seventh antenna (ANT7) and the eighth antenna (ANT8) may be formed in a transparent area of ​​the second side window glass (320b). The second WiFi antenna (1320b) may be formed in an opaque area of ​​the second side window glass (320b). The second WiFi antenna (1320b) may be formed in a slot antenna structure on an FPCB disposed in the opaque area of ​​the second side window glass (320b).

[0164] In the above, the vehicle antenna (1000) disposed on the rear window glass (330), the first and second quarter window glasses (340a, 340b) according to the present specification and the vehicle antenna (1000b) disposed on the front window glass (310), the first and second side window glasses (320a, 320b) have been described. In this regard, the vehicle antenna (1000, 1000b) according to the present specification can improve the mountability. In the vehicle antenna (1000) in which MIMO antennas and the TCU (200) are integrated, the antennas of 600 to 960 MHz of the low band (LB) of the cellular band, which occupy a large area, are distributed as transparent antennas, thereby improving the mountability. In addition, since the size of the TCU (200) is not affected even if the number of antennas increases, it is advantageous for platformization of the TCU, and the TCU (200) can be mounted in a space other than the upper roof inside the vehicle. The TCU (200) may be placed on the upper roof of the vehicle or inside the vehicle.

[0165] The vehicle antenna (1000, 1000b) according to this specification can flexibly respond to various OEM requirements by linking with a transparent antenna with high gain / broadband characteristics. Regardless of the mounting location of the TCU (200), the antenna radiation pattern can be adjusted and the antenna itself can be designed / modified independently depending on the transparent antenna attachment location.

[0166] The vehicle antenna (1000, 1000b) according to this specification is advantageous in terms of expandability and versatility. The vehicle antenna (1000, 1000b) can be built as a platform capable of interworking with the TCU (200) regardless of the vehicle tier. Furthermore, since it is advantageous in securing additional component mounting space within the TCU (200), it enables an expanded design for application of next-generation communication modules (6G and high-speed NTN communication).

[0167] The technical effects of the vehicle antenna according to this specification can be summarized as follows, but are not limited thereto.

[0168] According to this specification, a new antenna configuration and arrangement structure according to an expansion of the number of antennas can be provided on the front, side, or rear window of a vehicle.

[0169] According to the present specification, an antenna configuration and arrangement structure can be provided in which mutual interference between antennas is reduced by making the main radiation angles of radiation patterns of antennas placed in different areas of a vehicle window different during MIMO operation.

[0170] According to the present specification, antennas placed on different glass in a vehicle antenna can form different coverage areas to provide omnidirectional communication to the rear and sides of the vehicle while reducing mutual interference during MIMO operation.

[0171] According to this specification, antennas placed on different glass in a vehicle antenna can form different coverage areas to provide omnidirectional communication to the front and sides of the vehicle while reducing mutual interference during MIMO operation.

[0172] Further scope of the applicability of this disclosure will become apparent from the detailed description below. However, since various changes and modifications within the spirit and scope of this disclosure will become apparent to those skilled in the art, it should be understood that the detailed description and specific embodiments, such as the preferred embodiments of this disclosure, are given by way of example only. Accordingly, the detailed description above should not be construed as limiting in any respect, but rather as illustrative. The scope of this disclosure should be determined by a reasonable interpretation of the appended claims, and all changes within the equivalent scope of this disclosure are intended to be embraced therein.

Claims

1. In vehicle antennas, The above vehicle has front window glass, rear window glass, first and second quarter window glass, A first group of multiple antennas arranged on the rear window glass and operating as MIMO (multiple input and multiple output) antennas; and A second group of multiple antennas arranged on the first and second quarter window glasses and operating as MIMO antennas, Among the plurality of antennas of the second group, the first auxiliary group antennas are arranged on the first quarter window glass, Among the plurality of antennas of the second group, the second auxiliary group antennas are arranged on the second quarter window glass, The radiation signals of the plurality of antennas of the first group have a first radiation direction, The radiated signals of the above first auxiliary group antennas have a second radiation direction, The radiation signals of the second auxiliary group antennas have a third radiation direction, The first radiation direction, the second radiation direction and the third radiation direction are different from each other, A vehicle antenna, wherein each of the plurality of antennas of the first group, the first auxiliary group antennas, and the second auxiliary group antennas has at least one transmitting antenna.

2. In paragraph 1, The plurality of antennas of the first group include a first antenna that primarily transmits and receives a first signal and a second antenna that primarily transmits and receives a second signal, A vehicle antenna, wherein the plurality of antennas of the second group include a fifth antenna that primarily transmits and receives a fifth signal and a seventh antenna that primarily transmits and receives a seventh signal.

3. In paragraph 1, The plurality of antennas of the first group include a first antenna that mainly transmits and receives a first signal, a second antenna that mainly transmits and receives a second signal, a third antenna that receives a third signal, and a fourth antenna that receives a fourth signal, The first antenna and the third antenna are arranged in the first area of ​​the rear window glass, The second antenna and the fourth antenna are arranged in the second area of ​​the rear window glass, The above first region is defined as the left region of the rear window glass, A vehicle antenna, wherein the second region is defined as the right region of the rear window glass.

4. In paragraph 3, The plurality of antennas of the second group include a fifth antenna that mainly transmits and receives a fifth signal, a sixth antenna that receives a sixth signal, a seventh antenna that mainly transmits and receives a seventh signal, and an eighth antenna that receives an eighth signal. The fifth antenna and the sixth antenna are arranged on the first quarter window glass, A vehicle antenna, wherein the seventh antenna and the eighth antenna are arranged on the second quarter window glass.

5. In paragraph 3, A first TRX module operably coupled with the first antenna; A second TRX module operably coupled with the second antenna; A switch disposed between the first and second antennas and the first and second TRX modules, the switch configured to control a path through which the first and second antennas are connected; a first RX module operably coupled with the third antenna; and a second RX module operably coupled with the above four antennas; and A vehicle antenna further comprising a first transceiver operably coupled with the first and second TRX modules and the first and second RX modules.

6. In paragraph 5, The first antenna and the second antenna operate in a first frequency band, a second frequency band higher than the first frequency band, and a third frequency band higher than the second frequency band, The third antenna and the fourth antenna operate in the second frequency band and the third frequency band, The switch is configured such that the first and second input terminals are connected to the first and second antennas and the first and second output terminals are connected to the first and second TRX modules, A vehicle antenna, wherein the plurality of antennas of the first group transmit and receive the first and second signals through the first and second antennas in the first frequency band to the third frequency band to perform MIMO operation in the rear direction of the vehicle.

7. In paragraph 4, A third TRX module operably coupled with the fifth antenna; A third RX module operably coupled with the sixth antenna; A fourth TRX module operably coupled with the seventh antenna; A second switch arranged between the fifth and seventh antennas and the third and seventh TRX modules, and configured to control a path through which the fifth and seventh antennas are connected; a fourth RX module operably coupled with the eighth antenna; and A vehicle antenna further comprising a second transceiver operably coupled with the third and fourth TRX modules and the third and fourth RX modules.

8. In paragraph 7, The fifth antenna and the seventh antenna operate in a first frequency band, a second frequency band higher than the first frequency band, and a third frequency band higher than the second frequency band, The sixth antenna and the eighth antenna operate in the second frequency band and the third frequency band, The second switch is configured such that the first and second input terminals are connected to the fifth and seventh antennas and the first and second output terminals are connected to the third and fourth TRX modules, A vehicle antenna, wherein the plurality of antennas of the second group transmit and receive the fifth and seventh signals through the fifth and seventh antennas in the first frequency band to the third frequency band to perform MIMO operation in the lateral direction of the vehicle.

9. In paragraph 3, A GNSS antenna disposed between the first antenna and the second antenna; a first WiFi antenna disposed between the first antenna and the third antenna; and A vehicle antenna further comprising a second WiFi antenna disposed between the second antenna and the fourth antenna.

10. In paragraph 3, A GNSS antenna placed on the upper glass of the upper roof of the vehicle; A first WiFi antenna disposed between the fifth antenna and the sixth antenna; and A vehicle antenna further comprising a second WiFi antenna disposed between the seventh antenna and the eighth antenna.

11. For vehicle antennas, The above vehicle has a front window glass, a rear window glass, and first and second side window glass, A first group of multiple antennas operating as MIMO (multiple input and multiple output) antennas arranged on the front window glass; and A second group of multiple antennas arranged on the first and second side window glasses and operating as MIMO antennas, Among the plurality of antennas of the second group, the first auxiliary group antennas are arranged on the first side window glass, Among the plurality of antennas of the second group, the second auxiliary group antennas are arranged on the second side window glass, The radiation signals of the plurality of antennas of the first group have a first radiation direction, The radiated signals of the above first auxiliary group antennas have a second radiation direction, The radiation signals of the second auxiliary group antennas have a third radiation direction, The first radiation direction, the second radiation direction and the third radiation direction are different from each other, A vehicle antenna, wherein each of the plurality of antennas of the first group, the first auxiliary group antennas, and the second auxiliary group antennas has at least one transmitting antenna.

12. In paragraph 11, The plurality of antennas of the first group include a first antenna that primarily transmits and receives a first signal and a second antenna that primarily transmits and receives a second signal, A vehicle antenna, wherein the plurality of antennas of the second group include a fifth antenna that primarily transmits and receives a fifth signal and a seventh antenna that primarily transmits and receives a seventh signal.

13. In paragraph 12, The plurality of antennas of the first group include a first antenna that mainly transmits and receives a first signal, a second antenna that mainly transmits and receives a second signal, a third antenna that receives a third signal, and a fourth antenna that receives a fourth signal, The first antenna and the third antenna are arranged in the first area of ​​the rear window glass, The second antenna and the fourth antenna are arranged in the second area of ​​the rear window glass, The above first region is defined as the left region of the rear window glass, A vehicle antenna, wherein the second region is defined as the right region of the rear window glass.

14. In paragraph 13, The plurality of antennas of the second group include a fifth antenna that mainly transmits and receives a fifth signal, a sixth antenna that receives a sixth signal, a seventh antenna that mainly transmits and receives a seventh signal, and an eighth antenna that receives an eighth signal. The fifth antenna and the sixth antenna are arranged on the first quarter window glass, A vehicle antenna, wherein the seventh antenna and the eighth antenna are arranged on the second quarter window glass.

15. In paragraph 13, A first TRX module operably coupled with the first antenna; A second TRX module operably coupled with the second antenna; A switch disposed between the first and second antennas and the first and second TRX modules, the switch configured to control a path through which the first and second antennas are connected; a first RX module operably coupled with the third antenna; and a second RX module operably coupled with the above four antennas; and A vehicle antenna further comprising a first transceiver operably coupled with the first and second TRX modules and the first and second RX modules.

16. In paragraph 15, The first antenna and the second antenna operate in a first frequency band, a second frequency band higher than the first frequency band, and a third frequency band higher than the second frequency band, The third antenna and the fourth antenna operate in the second frequency band and the third frequency band, The switch is configured such that the first and second input terminals are connected to the first and second antennas and the first and second output terminals are connected to the first and second TRX modules, A vehicle antenna, wherein the plurality of antennas of the first group transmit and receive the first and second signals through the first and second antennas in the first frequency band to the third frequency band to perform MIMO operation in the front direction of the vehicle.

17. In paragraph 14, A third TRX module operably coupled with the fifth antenna; A third RX module operably coupled with the sixth antenna; A fourth TRX module operably coupled with the seventh antenna; A switch arranged between the fifth and seventh antennas and the third and seventh TRX modules, the switch configured to control a path through which the fifth and seventh antennas are connected; a fourth RX module operably coupled with the eighth antenna; and A vehicle antenna further comprising a second transceiver operably coupled with the third and fourth TRX modules and the third and fourth RX modules.

18. In paragraph 17, The fifth antenna and the seventh antenna operate in a first frequency band, a second frequency band higher than the first frequency band, and a third frequency band higher than the second frequency band, The sixth antenna and the eighth antenna operate in the second frequency band and the third frequency band, The second switch is configured such that the first and second input terminals are connected to the fifth and seventh antennas and the first and second output terminals are connected to the third and fourth TRX modules, A vehicle antenna, wherein the plurality of antennas of the second group transmit and receive the fifth and seventh signals through the fifth and seventh antennas in the first frequency band to the third frequency band to perform MIMO operation in the lateral direction of the vehicle.

19. In paragraph 13, A GNSS antenna disposed between the first antenna and the second antenna; a first WiFi antenna disposed between the first antenna and the third antenna; and A vehicle antenna further comprising a second WiFi antenna disposed between the second antenna and the fourth antenna.

20. In paragraph 13, A GNSS antenna placed on the upper glass of the upper roof of the vehicle; A first WiFi antenna disposed between the fifth antenna and the sixth antenna; and A vehicle antenna further comprising a second WiFi antenna disposed between the seventh antenna and the eighth antenna.

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