KR102215658B1 - Integrated antenna module and smart antenna devicee for vehicle comprising the same - Google Patents

Abstract

The present invention relates to an integrated antenna module and an antenna device for a vehicle including the same. The integrated antenna module of the present invention comprises: a base; a first antenna including a (1-1)^th antenna segment having first and second frequency bands as an operating frequency band, having one end connected to a first feed point, and having a frequency characteristic length corresponding to the first frequency band, a first filter connected to the other end of the (1-1)^th antenna segment and blocking an electric flow for the first frequency band, and a (1-2)^th antenna segment connected to the (1-1)^th antenna segment and having a frequency characteristic length corresponding to the second frequency band integrally with the (1-1)^th antenna segment and the first filter; and a second antenna including a (2-1)^th antenna segment having the first and second frequency bands as the operating frequency band, performing an MIMO function with the first antenna, having one end connected to a second feed point, and having the frequency characteristic length corresponding to the first frequency band, a second filter connected to the other end of the (2-1)^th antenna segment, blocking an electric flow for the first frequency band and improving a degree of isolation for the first antenna, and a (2-2)^th antenna segment connected to the (2-1)^th antenna segment, and having a frequency characteristic length corresponding to the second frequency band integrally with the (2-1)^th antenna segment and the second filter. According to the present invention, an improved degree of isolation between a plurality of antennas can be provided.

Description

Integrated antenna module and smart antenna device for vehicle including the same {INTEGRATED ANTENNA MODULE AND SMART ANTENNA DEVICEE FOR VEHICLE COMPRISING THE SAME}

The present invention relates to an integrated antenna module and a smart antenna device for a vehicle including the same, and more particularly, a filter for blocking a predetermined frequency band is provided on at least one of a plurality of antennas, and improved isolation between the plurality of antennas It is a technology related to an integrated antenna module and a smart antenna device for a vehicle including the same.

As various services related to vehicle applications are developed and provided, the number of antennas required for vehicles is increasing. In particular, in the case of wireless communication in the 5th generation (5G) frequency band, it is necessary to provide at least two or more antennas in order to secure a smooth communication environment.

Accordingly, a technology related to an integrated antenna having a plurality of antennas has been disclosed. However, when a plurality of antennas are provided inside a narrow space, electromagnetic interference may occur between the plurality of antennas, and the antenna performance may not be sufficiently exhibited.

One object of the present invention is to provide an integrated antenna module including a multi-band antenna capable of operating in at least two or more frequency bands, and a smart antenna device for a vehicle including the same.

Another object of the present invention is to provide an integrated antenna module in which a filter for blocking a predetermined frequency band is provided on at least one of a plurality of antennas, and an isolation degree between the plurality of antennas is improved, and a smart antenna device for a vehicle including the same Is to do.

The problem to be solved by the present invention is not limited to the above-described problems, and problems that are not mentioned will be clearly understood by those of ordinary skill in the art from the present specification and the accompanying drawings. .

According to an aspect of the present invention, there is provided a multi-band antenna having a base, a first frequency band and a second frequency band, which is a frequency band smaller than the first frequency band, as an operating frequency band. 1 A 1-1 antenna segment connected to a feed point and having a frequency characteristic length corresponding to the first frequency band, physically connected to the other end of the 1-1 antenna segment, and connected to the first frequency band A frequency corresponding to the second frequency band integrally with the 1-1 antenna segment and the 1-1 antenna segment and the first filter through the first filter and the first filter to block the flow of electricity to A first antenna including a 1-2 antenna segment having a characteristic length, installed on the base and having at least the first frequency band and the second frequency band as an operating frequency band, the first antenna and the MIMO: Multi -In Multi-Out) function of a multi-band antenna, one end connected to a second feed point and having a frequency characteristic length corresponding to the first frequency band 2-1 antenna segment, the 2-1 The second filter is physically connected to the other end of the antenna segment and blocks the flow of electricity in the first frequency band and is connected to the 2-1 antenna segment through the second filter and the second filter. And an integrated antenna module including a second antenna including a second antenna segment having a frequency characteristic length corresponding to the second frequency band integrally with the 2-1 antenna segment and the second filter. I can.

According to another aspect of the present invention, there is provided a multi-band antenna having a base, a first frequency band and a second frequency band, which is a frequency band smaller than the first frequency band, as an operating frequency band. A 1-1 antenna segment connected to a first feed point and having a frequency characteristic length corresponding to the first frequency band, physically connected to the other end of the 1-1 antenna segment, and the first frequency band Connected to the first-first antenna segment through the first filter and the first filter to block the flow of electricity to and correspond to the second frequency band integrally with the first-first antenna segment and the first filter A first antenna including a 1-2 antenna segment having a frequency characteristic length and installed on the base and having at least the first frequency band and the second frequency band as an operating frequency band, the first antenna and the MIMO: A multi-band antenna performing a Multi-In Multi-Out) function, the second antenna segment having one end connected to a second feed point and having a frequency characteristic length corresponding to the first frequency band, and the second The 2-1 antenna segment and the second filter are physically connected to the other end of the first antenna segment, block the electric flow in the first frequency band, and improve the isolation degree for the first antenna. The antenna module and the base including a second antenna connected to the 2-1 antenna segment and including a 2-2 antenna segment having a frequency characteristic length corresponding to the second frequency band integrally with the second filter A smart antenna device for a vehicle comprising a; a processor module installed in and outputting a digital signal based on an electrical signal for at least one of the first frequency band and the second frequency band provided from the antenna module may be provided. have.

The solution means of the subject of the present invention is not limited to the above-described solution means, and solutions not mentioned will be clearly understood by those of ordinary skill in the art from the present specification and the accompanying drawings. I will be able to.

According to the present invention, since the individual antennas constituting the integrated antenna module are provided as multi-band antennas operating for two or more frequency bands, the number of antennas required to provide services related to vehicle applications can be reduced.

According to the present invention, a filter that blocks the flow of electricity in a specific frequency band can reduce electromagnetic interference between a plurality of antennas, thereby providing an improved degree of isolation between the plurality of antennas.

The effects of the present invention are not limited to the above-described effects, and effects that are not mentioned will be clearly understood by those of ordinary skill in the art from the present specification and the accompanying drawings.

1 is a diagram illustrating an example of an installation position of an antenna assembly for a vehicle according to an embodiment of the present specification
2 is a configuration diagram of a module-integrated smart antenna module according to an embodiment of the present specification.
3 is a perspective view of an external structure of an antenna assembly for a vehicle according to an embodiment of the present specification.
4 is a view showing the interior of the vehicle antenna assembly according to the embodiment of the present specification.
5 is a configuration diagram of a multi-band antenna according to an embodiment of the present specification.
6 is a top view of a multi-band antenna according to an embodiment of the present specification.
7 to 11 are views showing conductive patterns of an antenna segment and a filter according to an embodiment of the present specification.
12 is a side view of a multi-band antenna according to an embodiment of the present specification.
13 is a diagram illustrating an operation range of an antenna segment and a filter for a first frequency band according to an embodiment of the present specification.
14 is a diagram illustrating an operation range of an antenna segment and a filter for a second frequency band according to an embodiment of the present specification.
15 is a diagram illustrating an operation range of an antenna segment and a filter for a third frequency band according to an embodiment of the present specification.
16 and 17 are side views of a multi-band antenna showing lengths of a plurality of antenna segments and filters according to an embodiment of the present specification.
18 is a side view of a multi-band antenna showing a distance relationship between a common ground plane and each antenna segment according to an embodiment of the present specification.

Since the embodiments described in the present specification are intended to clearly explain the spirit of the present invention to those of ordinary skill in the art to which the present invention pertains, the present invention is not limited by the embodiments described herein, and the present invention The scope of should be construed as including modifications or variations that do not depart from the spirit of the present invention.

The terms used in the present specification have been selected as general terms that are currently widely used in consideration of functions in the present invention, but this varies depending on the intention, custom, or the emergence of new technologies of those of ordinary skill in the technical field to which the present invention belongs. I can. However, if a specific term is defined and used in an arbitrary meaning unlike this, the meaning of the term will be separately described. Therefore, terms used in the present specification should be interpreted based on the actual meaning of the term and the entire contents of the present specification, rather than a simple name of the term.

The drawings attached to the present specification are for easy explanation of the present invention, and the shapes shown in the drawings may be exaggerated and displayed as needed to aid understanding of the present invention, so the present invention is not limited by the drawings.

In the present specification, when it is determined that a detailed description of a known configuration or function related to the present invention may obscure the subject matter of the present invention, a detailed description thereof will be omitted as necessary.

According to an aspect of the present application, a multi-band antenna having a base, a second frequency band, which is installed on the base and is at least a first frequency band and a frequency band smaller than the first frequency band, as an operating frequency band, one end of which is 1 A 1-1 antenna segment connected to a feed point and having a frequency characteristic length corresponding to the first frequency band, physically connected to the other end of the 1-1 antenna segment, and connected to the first frequency band A frequency corresponding to the second frequency band integrally with the 1-1 antenna segment and the 1-1 antenna segment and the first filter through the first filter and the first filter to block the flow of electricity to A first antenna including a 1-2 antenna segment having a characteristic length, installed on the base and having at least the first frequency band and the second frequency band as an operating frequency band, the first antenna and the MIMO: Multi -In Multi-Out) function of a multi-band antenna, one end connected to a second feed point and having a frequency characteristic length corresponding to the first frequency band 2-1 antenna segment, the 2-1 The second filter is physically connected to the other end of the antenna segment and blocks the flow of electricity in the first frequency band and is connected to the 2-1 antenna segment through the second filter and the second filter. And an integrated antenna module including a second antenna including a second antenna segment having a frequency characteristic length corresponding to the second frequency band integrally with the 2-1 antenna segment and the second filter. I can.

An integrated antenna module may be provided, characterized in that the distal ends of the first antenna and the distal ends of the second antenna face different directions.

When viewed from the top of the integrated antenna module, the first antenna has a first axis toward the distal end of the first antenna from the first feed point, and the second antenna is from the second feed point. An integrated antenna module may be provided that has a second axis facing the distal end, and an extension line of the first axis and an extension line of the second axis are orthogonal.

An integrated antenna module in which a radiation pattern corresponding to the first frequency band by the first antenna and a radiation pattern corresponding to the first frequency band by the second antenna are orthogonal to each other may be provided.

The second filter may be provided with an integrated antenna module for reducing interference between the radiation pattern corresponding to the first frequency band by the first antenna and the radiation pattern corresponding to the first frequency band by the second antenna. have.

The first and second filters may be provided with an integrated antenna module that functions as a band-stop filter or a low-pass filter for a first frequency band.

The integrated antenna module further comprises a third antenna operating in a third frequency band, the operating frequency of which is the third frequency band, and a fourth antenna performing a good-looking operation with the third antenna, and the third antenna An integrated antenna module may be provided in which the radiation pattern for the third frequency band is orthogonal to the radiation pattern for the third frequency band of the fourth antenna.

According to another aspect of the present application, there is provided a base, a multi-band antenna installed on the base and having at least a first frequency band and a second frequency band, which is a frequency band smaller than the first frequency band, as an operating frequency band, one end of which is A 1-1 antenna segment connected to a first feed point and having a frequency characteristic length corresponding to the first frequency band, physically connected to the other end of the 1-1 antenna segment, and the first frequency band Connected to the first-first antenna segment through the first filter and the first filter to block the flow of electricity to and correspond to the second frequency band integrally with the first-first antenna segment and the first filter A first antenna including a 1-2 antenna segment having a frequency characteristic length and installed on the base and having at least the first frequency band and the second frequency band as an operating frequency band, the first antenna and the MIMO: A multi-band antenna performing a Multi-In Multi-Out) function, the second antenna segment having one end connected to a second feed point and having a frequency characteristic length corresponding to the first frequency band, and the second The 2-1 antenna segment and the second filter are physically connected to the other end of the first antenna segment, block the electric flow in the first frequency band, and improve the isolation degree for the first antenna. The antenna module and the base including a second antenna connected to the 2-1 antenna segment and including a 2-2 antenna segment having a frequency characteristic length corresponding to the second frequency band integrally with the second filter A smart antenna device for a vehicle including a processor module installed in and outputting a digital signal based on an electrical signal for at least one of the first frequency band and the second frequency band provided from the antenna module may be provided. .

The distal end of the first antenna and the distal end of the second antenna face different directions, and when viewed from the top of the integrated antenna module, the first antenna is a first antenna toward the distal end of the first antenna from the first feed point. A smart antenna device for a vehicle having an axis, wherein the second antenna has a second axis toward the distal end of the second antenna from the second feed point, and an extension line of the first axis and an extension line of the second axis are orthogonal. Can be.

The second filter is a smart antenna device for a vehicle that reduces interference between a radiation pattern corresponding to the first frequency band by the first antenna and a radiation pattern corresponding to the first frequency band by the second antenna. I can.

Hereinafter, an integrated antenna module and a smart antenna device including the same according to an embodiment of the present specification will be described.

The present invention relates to an integrated antenna module and a smart antenna device including the same, and more particularly, a filter for blocking a predetermined frequency band is provided on at least one of a plurality of antennas, thereby providing improved isolation between the plurality of antennas. It is a technology related to the provided integrated antenna module and a smart antenna device for a vehicle including the same.

1. Installation location of the vehicle antenna assembly

1 is a diagram illustrating an example of an installation position of an antenna assembly for a vehicle according to an embodiment of the present specification

Conventional vehicle antennas have been installed to protrude from the external area of the vehicle to facilitate communication with the outside. However, in recent years, as an aesthetic factor for a vehicle has become important, a hidden antenna installed inside a vehicle is also widely used.

Referring to FIG. 1, the vehicle antenna assembly may be installed on the rear surface 100 of a vehicle roof.

For example, the vehicle antenna assembly may be installed by being inserted into the interior of the vehicle roof rear surface 100. Here, the vehicle antenna assembly, which is inserted and installed inside the vehicle roof rear surface 100, is physically separated from the external region by an external cover composed of at least a part of the non-metal, but since radio waves can be transmitted, the external region and the electrical May be connected to.

As described above, an antenna assembly for a vehicle that is inserted and installed inside the rear side surface 100 of the vehicle roof may be referred to as a hidden antenna.

Alternatively, a shark-fin antenna in which the vehicle antenna assembly is included in the shark fin-shaped housing may be installed on the rear side surface 100 of the vehicle roof. The shark pin antenna is an antenna in which a design element of an outer housing is considered to give a user an aesthetic feeling, and may be disposed to protrude from the rear surface 100 of a vehicle roof so as to effectively perform external communication.

The above description is an embodiment of the installation position of the vehicle antenna assembly according to the present invention, and is not limited to the above description, and the vehicle antenna assembly may be installed in various locations such as the inside of the spoiler, the vehicle bumper, and the rear view mirror. It should be noted that the installation position of the vehicle antenna assembly in the specification is not limited to the above-described position.

2. Smart antenna module configuration

2-1 Overview

2 is a configuration diagram of a module-integrated smart antenna module according to an embodiment of the present specification.

Referring to FIG. 2, the module-integrated smart antenna module 200 may include an antenna module 220, a control module 240, and an isolation module 260.

The antenna module 220 may include at least one antenna capable of transmitting and receiving radio frequency signals for each operating frequency. The antenna module 220 may obtain an electric signal of an operating frequency band of each antenna, and provide the electric signal to the control module 240 connected to the antenna module 220 by a predetermined connection means. have. Details of the detailed configuration of the antenna module 220 will be described later.

The control module 240 may process radio frequency signals, process information, and perform calculations. The radio frequency signal is an analog signal that is an electric signal, and the control module 240 may convert the radio frequency signal into a digital signal and output it. The control module 240 may provide the converted digital signal to the head unit.

The head unit may be a component controlled by a user interface such as a radio receiver, a touch screen display, a navigation device, and a mobile device.

Alternatively, the control module 240 may process the command signal provided from the head unit and provide it to the antenna module. Here, the control module 240 may convert the command signal, which is a digital signal, into an analog signal.

The control module 240 may be implemented as a CPU or a similar device according to hardware, software, or a combination thereof. Alternatively, in terms of hardware, the control module 240 may be provided in the form of an electronic circuit that performs a function of processing and controlling an electrical signal. Individual constituent modules included in the control module 240 may perform the functions of the control module 240 described above, and details that may be duplicated will be omitted.

The control module 240 may be referred to as a telematics control unit (TCM) or a tuner module.

The control module 240 may be electrically connected to the antenna module 220 through a coaxial cable. In this case, the length of the coaxial cable may vary depending on the installation positions of the antenna module 220 and the control module 240. When the antenna module 220 and the control module 240 are installed far apart, manufacturing cost for the coaxial cable may increase.

The electric signal provided from the antenna module 220 to the control module 240 or the control module 240 to the antenna module 220 may be transmitted as an analog signal, and attenuation loss for the electric signal may occur during the transmission process. .

To prevent this, the antenna module 220 and the control module 240 may be installed adjacent to each other so as to be located within a predetermined distance from each other.

For example, while the antenna module 220 is a shark pin antenna mounted on the roof, the control module 240 may be installed under the roof on which the antenna module 220 is mounted. In this case, the antenna module 220 and the control module 240 may be spaced apart by a predetermined distance including the thickness of the loop, and the antenna module 220 and the control module 240 may be spaced apart from the predetermined distance. On the other hand, it may be connected with a connector or a coaxial cable.

Alternatively, the antenna module 220 and the control module 240 may be located inside the same housing. In this case, the antenna module 220 and the control module 240 may be electrically connected by a conductive pattern or signal connection line formed on a printed circuit board.

As the antenna module 220 and the control module 240 are installed adjacent to each other, the manufacturing cost for the coaxial cable may be reduced compared to a case where the antenna module 220 and the control module 240 are disposed to be spaced apart from each other by a predetermined distance or more. Attenuation loss related to a radio signal that may occur in the process of being transmitted between the control modules 240 may be reduced.

The isolation module 260 may improve isolation between a plurality of antennas included in the antenna module 220 and may minimize mutual interference between the plurality of antennas.

Here, the isolation module 260 may provide a frequency adaptive isolation degree. For example, the isolation module 260 may be electrically connected to a matching circuit capable of corresponding to a specific frequency characteristic through a feed point, and may have different frequency isolation characteristics according to a predetermined criterion by the matching circuit. have.

2-2 composition

2-2-1 Antenna module configuration

The antenna module 220 may include a 5G antenna, a V2X antenna, a 4G antenna, a satellite antenna, and a broadcast antenna.

The 5G (5 Generation) antenna may be an antenna operating in a frequency band for 5G communication.

Here, the 5G communication method may use a millimeter waver band. For example, the frequency band for the fifth generation communication may be 3.5 GHz as an intermediate band or 28 GHz as an ultra-high frequency band.

The operating frequency of the 5G antenna is a high frequency, has strong straightness, and is liable to cause loss in the signal transmission process. In order to compensate for this and have improved frequency performance, the 5G antenna may be configured with a multi-in-multi-out (MIMO) antenna array. For example, the 5G antenna may be implemented on a first antenna and a second antenna respectively installed in separate antenna configurations.

The V2X antenna may be an antenna operating in a frequency band for V2X communication.

V2X stands for Vehicle-to-Everything and refers to a technology that can exchange information that may exist on the road between objects or infrastructure through wired and wireless signals. At this time, V2X is a vehicle-to-vehicle (V2V), vehicle-to-infra (V2I), vehicle-to-pedestrian (V2P), and vehicle-to-personal terminal. (Vehicle to Nomadic Devices, V2N) can include all communications.

The V2X antenna is operated to comply with the V2X IEEE802.11p standard, and may be an antenna operating on radio waves in a 5.9 GHz band. Alternatively, the V2X antenna may be an antenna for C-V2X (Cellular-V2X) communication.

The V2X antenna may be composed of at least two or more antennas. According to an embodiment, the V2X antenna may be configured with two separate antennas. For example, the frequency band for the V2X antenna may be a frequency band operated by separate first and second antennas, respectively.

The radio signal of the frequency band for V2X communication has strong linearity, so omni-directional characteristics may be somewhat insufficient.

In order to compensate for this, it is possible to perform smooth communication with the outside by transmitting and receiving wireless signals through a plurality of antennas directed in multidirectional directions. In this case, each of the plurality of antennas may be installed at a sufficient distance apart to ensure isolation from each other.

The 4G antenna is a cellular antenna or a telematics antenna, and may be an antenna for a fourth generation (4G) communication scheme including a Long-Term Evolution (LTE) antenna or a Mobile WiMAX (Wibro) antenna.

Here, the LT antenna may be configured as a mimo antenna array. In the case of the 4G antenna, a mimo antenna mode may be supported to improve transmission speed. In order to support the mimo antenna mode, the degree of isolation between the 4G antennas must be secured, and this can be achieved by the isolation module according to an embodiment of the present invention.

The 4G antenna may operate on an LTE frequency band, and the LTE frequency band may include a low frequency band and a high frequency band.

The low frequency band may be 800 to 900 Mhz, and the high frequency band may be 1.7 to 2.3 GHz.

The 5G antenna and the 4G antenna can be implemented through a multi-band antenna capable of operating both for each operating frequency.

For example, an antenna capable of operating in each frequency band of a 5G frequency band, a low frequency band of LTE, and a high frequency band of LTE may be implemented through one multi-band antenna. That is, the multi-band antenna may be a multi-band antenna capable of operating for three frequency bands as one antenna configuration.

The satellite antenna may include an antenna for receiving satellite information capable of obtaining location information on a desired point in a specific time zone. The satellite antenna may be a Global Navigation Satellite System (GNSS), a Satellite Digital Audio Radio Service (SDARS), a Global Positioning System (GPS), a GALILEO, or a Global Orbiting Navigational System (GLONASS), but is not limited to the above-described example.

The broadcast antenna may be an antenna for satellite broadcast reception capable of performing a broadcasting operation on a broadcast signal having a satellite frequency band. According to an example, the antenna for receiving satellite broadcasting may be an antenna for SXM (SiriusXM) communication.

Alternatively, the broadcast antenna is an antenna for receiving signals related to radio broadcasting, and operates in the AM/FM antenna operating in the AM/FM frequency band or in the DAB (Digital Audio Broadcasting) frequency band, which is a frequency for receiving signals related to terrestrial broadcasting. It may be a DAB antenna.

2-2-2 Control module configuration

The control module 240 may include a V2X communication module, an LTE communication module, a Bluetooth/Wifi communication module, and a communication interface.

The V2X communication module may acquire information on a V2X frequency signal based on a radio frequency signal provided from an antenna operating in the V2X frequency band.

The V2X communication module may include a satellite information receiver, and position information on a vehicle or a specific target may be acquired based on a signal obtained by an antenna for receiving satellite information included in the antenna module.

For example, the V2X communication module may be configured to enable vehicle-to-infrastructure and communication between a vehicle and another vehicle, thereby providing a service regarding real-time traffic information to passengers of the vehicle.

The LTE communication module may process a radio signal provided from an antenna operating in an LTE frequency band. In addition, the LTE communication module may provide information based on a radio signal provided from an antenna operating in the LTE frequency band to the head unit through a digital cable.

The Bluetooth/Wifi communication module may obtain a WI-FI signal and a Bluetooth signal provided from the outside or from the inside of the vehicle and process it into a digital signal so that it can be provided to the head unit. In the case of a Wifi signal and a Bluetooth signal, it may be provided from the antenna module, and may be provided from an external area installed at a location separate from the antenna module.

The communication interface may provide a communication environment for smoothly connecting the head unit and the control module. Since the control module and the head unit communicate through digital signals, the communication interface may be configured to transmit and receive digital signals.

According to an example, the communication interface may include an Ethernet interface. In the case of wired connection, information can be transmitted and received through a digital cable. The digital cable may include an Ethernet cable, a B2B socket, or the like.

Alternatively, the communication interface may include a wireless local area network (WLAN), a cellular interface, a Bluetooth interface, or other RF communication interface. However, in some cases, the control module and the head unit may be connected through controller area network (CAN) communication to perform an operation related to data communication, and the exemplary method and means are not limited thereto.

In addition, it should be noted that the control module of the vehicle antenna may include various configurations such as a communication module for AM/FM antenna and a communication module for Dedicated Short Range Communication (DSRC), and is not limited to the above configuration.

3. Antenna assembly

3-1 External structure

3 is a perspective view of an external structure of an antenna assembly for a vehicle according to an embodiment of the present specification.

This embodiment is an exemplary view showing an external structure surrounding the vehicle antenna assembly 1000 when the vehicle antenna assembly 1000 is embedded in the rear roof of the vehicle.

The interior of the vehicle antenna assembly 1000 may include components sensitive to external influences, such as a printed circuit board and antenna configuration in which circuit elements are implemented. Accordingly, the vehicle antenna assembly 1000 may require an external housing to protect the components contained therein.

The vehicle antenna assembly may include a connection part 1020, a cover part 1040, and a mounting part 1060 and a fastening part 1080.

The connection unit 1020 may provide a communication environment for networking between an antenna included in the vehicle antenna assembly 1000 and an external configuration of the vehicle antenna assembly 1000. The connection unit 1020 may have various types of connection according to a communication method between the inside and outside of the antenna.

For example, when the control module of the vehicle antenna assembly 1000 is installed outside the vehicle antenna assembly, the signal output from the vehicle antenna assembly 1000 is an analog signal that is an electric signal, and the connection part 1020 Connection means for transmitting analog signals, such as a coaxial cable, may be installed.

Alternatively, when a control module for the vehicle antenna assembly 1000 is installed inside the vehicle antenna assembly 1000, the control module processes an electric signal provided from an antenna to include information based on the electric signal. Digital signals can be output. Accordingly, a signal provided to the outside from the vehicle antenna assembly 1000 is a digital signal, and an environment for transmitting and receiving a digital signal may be provided to the connector 1020. In this case, the contents of the connection means between the control module and the head unit described above with reference to FIG. 2 may be equally applied, and descriptions of overlapping contents will be omitted.

The cover part 1040 is a component for protecting the internal configuration of the vehicle antenna assembly from external influences, and may be embedded and installed in the vehicle through the mounting part 1060.

The cover part 1040 may include a lower cover 1042 and an upper cover 1044. Here, the lower cover 1042 may be a position where a base portion to which an antenna internal configuration is to be installed is installed. Details of the base unit will be described later in detail with reference to FIG. 5.

In order for the vehicle antenna assembly 1000 to sufficiently secure communication and networking performance with the outside, at least a part of the cover part 1040 may be formed of a non-conductor. For example, the material of the outer cover may be polycarbonate (PC).

The mounting unit 1060 may mount the vehicle antenna assembly 1000 according to the present invention to one side of the vehicle using a bolt-nut coupling method or an adhesive means. One side of the mounting part 1060 may be integrally formed with the lower cover 1042, and a through hole may be formed in the middle of the mounting part 1060. When the vehicle antenna assembly 1000 is mounted inside a vehicle, a bolt for mounting passes through the front hole of the through hole, and the bolt protruding through the rear hole of the through hole is inserted into a nut or a coupling hole previously provided in the vehicle. By coupling, the vehicle antenna assembly 1000 may be coupled to the interior of the vehicle.

The fastening part 1080 may couple the upper cover 1044 and the lower cover 1042. The fastening part 1080 may have a structure in which a part of the fastening part 1080 has a hook shape while another part of the fastening part 1080 may be forcefully fitted with the hook shape. Since the fastening portion 1080 has a structure capable of performing force fitting, the upper cover 1044 and the lower cover 1042 can be easily coupled to each other even when there is no special tool. However, the structure of the fastening part 1080 may be a known technique such as a bolt-nut coupling method, and is not limited to the above-described exemplary means.

3-2 internal configuration

4 is a view showing the interior of the vehicle antenna assembly according to the embodiment of the present specification.

4, the vehicle antenna assembly includes a base unit 1030, a first antenna 1100, a second antenna 1102, a third antenna 1104, a fourth antenna 1106, and satellite information reception. An antenna 1103, an antenna 1105 for receiving satellite broadcast information, and an isolation element 1107 may be included.

The base unit 1030 may provide a space in which the internal configuration of the vehicle antenna assembly is mounted. Referring to FIG. 4, the base portion 1030 may be positioned on one side of the cover portions 1042 and 1044 supporting the external shape of the vehicle antenna assembly. For example, it may be coupled to the lower cover 1042 through a predetermined connection means. The predetermined connection means may be a bolt-nut coupling method, a known assembly method such as an adhesive means, but is not limited thereto.

The base unit 1030 may provide an area in which a printed circuit board (PCB) capable of implementing a circuit element capable of transmitting electric signals related to antenna operation or providing information on other operation commands is mounted. I can. Here, the circuit element may be implemented through a conductive pattern printed on at least a portion of the printed circuit board.

The first to fourth antennas 1100, 1102, 1104, and 1106 may be multi-band antennas capable of operating for two or more frequency bands.

The first antenna 1100 is a multi-band antenna capable of operating for three different frequency bands, and may be a multi-band antenna capable of operating for an intermediate frequency band of 5G, a high frequency of 4G, and a low frequency of 4G.

The second antenna 1102 may be configured to operate in substantially the same frequency band as the first antenna 1100. That is, the second antenna 1102 may be a multi-band antenna capable of operating in an intermediate frequency band of 5G, a high frequency of 4G, and a low frequency of 4G, similar to the first antenna 1100.

The third antenna 1104 is a multi-band antenna capable of operating on two different frequency bands, and may be an antenna for V2X communication and an antenna of a 5G intermediate frequency band.

The fourth antenna 1106 may be configured to operate in substantially the same frequency band as the third antenna 1104. That is, like the third antenna 1104, the fourth antenna 1106 may be an antenna for V2X communication and a 5G intermediate frequency band antenna.

Here, the intermediate frequency band of the 5G may be a 3.5 GHz band, the 4G high frequency band may be a 2.3 GHz band, the 4G low frequency band may be an 800 MHz band, and a frequency for the V2X communication may be a 5.9 GHz band. Alternatively, the 5G intermediate frequency band may be a 3.6 GHz band, the 4G high frequency band may be a 1.7 to 2.4 GHz band, and the 4G low frequency band may be a 0.67 to 0.96 GHz band.

The first to fourth antennas 1100, 1102, 1104, and 1106 may be separated by a sufficient distance from each other in order to reduce mutual interference and provide an improved degree of isolation between the antennas. For example, the second antenna 1102 may be configured to face outward indicating different directions in order to reduce mutual interference caused by the first antenna 1100. The direction in which the first antenna 1100 faces may be a direction toward the antenna element of the first antenna 1100 that is furthest apart from the feed point of the first antenna 1100. The direction of the second antenna 1102 may be similarly defined.

Referring to FIG. 4, an end portion of the first antenna 1100 and an end portion of the second antenna 1102 may be configured to face different directions. Here, the distal end may be defined as a point farthest from the feed point of each antenna. In detail, the first antenna 1100 may be positioned on the upper left side of the vehicle antenna assembly, but the first antenna 1100 may be configured to face the upper left side. In addition, the second antenna 1102 may be positioned at a lower right side of the vehicle antenna assembly, but the second antenna 1102 may be configured to face the lower side toward the right.

A direction toward the first antenna 1100 and a direction toward the second antenna 1102 may be orthogonal to each other. For example, referring to FIG. 4, the first antenna 1100 may be configured to face 9 o'clock and 12 o'clock, but the second antenna 1102 may be configured to face 6 o'clock and 3 o'clock. . Therefore, the axis from the feed point of the first antenna 1100 toward the distal end of the first antenna 1100 and the axis toward the distal end of the second antenna 1102 from the feed point of the second antenna 1102 are each Can be orthogonal. Accordingly, a radiation pattern corresponding to a specific frequency band by the first antenna 1100 may be orthogonal to a radiation pattern corresponding to the specific frequency band by the second antenna 1102, Accordingly, the degree of isolation between the first antenna 1100 and the second antenna 1102 for the specific frequency band may be ensured.

Each of the first to fourth antennas 1100, 1102, 1104, and 1106 may include at least one filter. A filter included in each antenna may block electric flow for a specific frequency band, and may provide improved isolation for an antenna operating for the specific frequency band. For example, the first antenna 1100 and the second antenna 1102 may operate for a first frequency band. Since the first antenna 1100 includes a first filter capable of blocking the first frequency band, isolation with respect to the first frequency band may be secured in relation to the second antenna 1102. Alternatively, the first antenna 1100 may have a second filter capable of blocking the second frequency band, thereby securing an isolation degree for the second frequency band in relation to the second antenna 1102.

Details of the filters included in each antenna will be described later with reference to FIGS. 5 to 11.

Similar to the relationship between the first antenna 1100 and the second antenna 1102, a direction toward the third antenna 1104 and a direction toward the fourth antenna 1106 may be orthogonal to each other. Contents related to the direction in which each antenna is arranged may be duplicated with the above description, and thus will be omitted.

The third antenna 1104 and the fourth antenna 1106 may also be spaced apart from each other by a sufficient distance to reduce mutual interference.

4, the third antenna 1104 may be located at a lower left end of the vehicle antenna assembly, and the fourth antenna 1106 may be located at a right upper end of the vehicle antenna assembly.

The installation positions of the first to fourth antennas 1100, 1102, 1104, and 1106 in the interior of the vehicle antenna assembly are one of exemplary embodiments, and are not limited to the above-described arrangement positions.

The satellite information receiving antenna 1103 is an antenna capable of operating in a satellite frequency band, and may acquire an electric signal including at least location information about a specific point. An electric signal including at least location information about the specific point is provided to a control module for a vehicle antenna assembly, and the control module may output a digital signal including location information about the specific point.

The satellite information reception antenna 1103 may be a patch antenna having a low profile. The satellite information receiving antenna 1103 may be installed at a predetermined position of the base 1030. 4, the satellite information receiving antenna 1103 may be installed at a position corresponding to a position between the connection unit 1020 and the second antenna 1102. A position corresponding to the center portion of the base unit Can be installed on.

Here, the satellite information receiving antenna 1103 may be related to the satellite antenna described above with reference to FIG. 3, and a description of the content overlapping with the above description will be omitted.

The vehicle antenna assembly according to the present invention may further include an antenna for receiving satellite broadcasting information. The satellite broadcasting information reception antenna has an operating frequency of a satellite broadcasting frequency band, and can receive a broadcasting signal. According to an example, the antenna for receiving satellite broadcast information may be an antenna for SXM communication.

Here, the antenna for receiving satellite broadcasting information may be related to the broadcasting antenna described above with reference to FIG. 2, and the contents overlapping with the above description will be omitted.

The vehicle antenna assembly according to the invention may further comprise an isolation element. The isolation element may provide improved isolation between the first to fourth antennas 1100, 1102, 1104, and 1106 and the antenna 1103 for receiving satellite information.

The isolation element may provide an improved degree of isolation between the first to fourth antennas 1100, 1102, 1104, and 1106 performing a beauty operation with each other. The first to fourth antennas 1100, 1102, 1104, 1106 are micro-antenna arrays that operate for at least one or more of the same frequency band, and when two or more antennas operate for the same frequency band, A MIMO Fading phenomenon that deteriorates operating performance may occur.

For example, when the first and second antennas 1100 and 1102 simultaneously operate for a frequency of a 3.5 GHz band, the operating performance of the first and second antennas 1100 and 1102 for a 3.5 GHz band is Can be reduced. The isolation element 1107 may reduce mutual interference between antenna elements, including a fading phenomenon.

The vehicle antenna assembly according to the present invention removes noise from signals of the satellite information reception antenna 1103 and the satellite broadcast information reception antenna 1105 in addition to the above-described antenna internal configuration, and transmits electrical signals provided from each antenna. It may further include a low noise amplifier (Low Noise Amplifer, LNA) capable of amplifying. According to an example, the vehicle antenna assembly may further include a GNSS LNA and an SXM LNA.

Hereinafter, detailed configurations of the first to fourth antennas 1100, 1102, 1104, and 1106 configured to operate for two or more frequency bands will be described.

4. Multi-band antenna

4-1 configuration

5 is a configuration diagram of a multi-band antenna according to an embodiment of the present specification.

According to an embodiment of the present invention, referring to FIG. 4, the first and second antennas may operate for three frequency bands, and the third and fourth antennas may operate for two frequency bands. have.

Hereinafter, configurations of the first and second antennas capable of operating in three frequency bands will be described. Hereinafter, the first and second antennas will be referred to as multi-band antennas 1100.

However, the detailed configuration and operation method for functioning as the multi-band antenna 1100 may be equally applied to the third and fourth antennas.

Referring to FIG. 5, the multi-band antenna 1100 may include the first to fourth antenna segments 1110, 1130, 1150, and 1170 including at least a part of a conductor for functioning as an antenna. That is, the first to fourth antenna segments 1110, 1130, 1150, and 1170 may function as at least a part of an antenna element for a specific operating frequency band.

Here, the first to fourth antenna segments 1110, 1130, 1150, and 1170 may be an antenna element formed of a single conductor, or an antenna element implemented by printing a conductive pattern on at least one surface of a printed circuit board.

The multi-band antenna 1100 may include first to third filters 1120, 1140, and 1160 each capable of blocking or transmitting an electric signal flow for a specific frequency band.

Here, the first to third filters 1120, 1140, and 1160 are: Band Reject Filters (BRF) configured to block electrical signals for a specific band range, respectively, or for electrical signals for a specific band range. It may be a band pass filter (BPF) configured to transmit, or a low pass filter (LPF) that transmits only electrical signals in a frequency band lower than a predetermined frequency band.

Here, the band reject filter may be referred to as a band stop filter or a band cut filter, the band pass filter as a band pass filter, the low-pass filter as a low pass filter, and the high-pass filter as a high pass filter. have.

A detailed method of operating the first to fourth antenna segments 1110, 1130, 1150, and 1170 and the first to third filters 1120, 1140, and 1160 as a multi-band antenna is described with reference to FIGS. 11 to 14 It will be described later.

6 is a top view of a multi-band antenna according to an embodiment of the present specification.

6, the multi-band antenna includes a first antenna segment 1110, a first filter 1120, a second antenna segment 1130, a second filter 1140, a third antenna segment 1150, and a third antenna segment 1150. The three filters 1160 and the fourth antenna segment 1170 may be connected in series in that order.

Here, the first to fourth antenna segments 1110, 1130, 1150, and 1170 may not be physically connected to each other.

For example, referring to FIG. 6, the first antenna segment 1110 and the second antenna segment 1130 may be connected through the first filter 1120, and the second antenna segment 1130 And the third antenna segment 1150 may be connected through the second filter 1140, and the third antenna segment 1150 and the fourth antenna segment 1170 may be connected through the third filter 1160. Can be connected.

That is, the first filter 1120 is physically connected to the other end of the first antenna segment 1110, and one end of the second antenna segment 1130 is physically connected to the first filter 1120, The second filter 1140 is connected to the other end of the second antenna segment 1130, and one end of the third antenna segment 1150 is connected to the second filter 1140, and the third filter 1160 ) May be connected to the other end of the third antenna segment 1150, and one end of the fourth antenna segment 1170 may be connected to the third filter 1160.

7 to 11 are views showing conductive patterns of an antenna segment and a filter according to an embodiment of the present specification.

7 to 10 are views for explaining an antenna segment and a filter implemented by printing a conductor on at least one of an upper or a rear surface of a printed circuit board. Specifically, FIG. 7 is a view showing the top surface of the first PCB 1101, and FIG. 8 is a view showing the rear surface of the first PCB 1101. 9 and 10 are diagrams showing the patterning of the upper conductor of the first PCB 1101 and the patterning of the rear conductor of the first PCB 1101 corresponding thereto when viewed from the top of the first PCB 1101. , In the case where the upper conductor patterning and the rear conductor patterning overlap, FIG. 9 is a view showing preferentially the upper conductor patterning, and FIG. 10 is a view showing preferentially the rear conductor patterning.

7 to 10, the first to fourth antenna segments 1110, 1130, 1150, 1170 and the first to third filters 1120, 1140, and 1160 are provided with a predetermined amount of electricity in the first PCB 1101. A conductive pattern having a length may be printed and implemented. The conductive pattern may be implemented using a copper thin film as a material. The lengths of the first to fourth antenna segments 1110, 1130, 1150, and 1170 and the first to third filters 1120, 1140, and 1160 refer to the electrical length of the conductive pattern implemented on the first PCB. can do.

According to an embodiment, the first to fourth antenna segments 1110, 1130, 1150, and 1170 and the first to third filters 1120, 1140, and 1160 are conductive on at least one of the top or rear surfaces of the first PCB. The pattern can be printed and implemented.

For example, referring to FIGS. 7 to 10, the first filter 1100 includes a 1-1 filter 1122 and a first PCB 1102 printed with a conductive material on the upper surface of the first PCB 1101. A 1-2th filter 1124 printed with a conductive material may be included on the lower surface of the frame. The 1-1 filter 1122 and the 1-2 filter 1124 are printed on the top and rear surfaces of the first PCB 1101, respectively, but at least some of them may be physically and electrically connected through a conductor, This may have an electrical length for implementing the first filter. In addition, the second filter 1140 includes a 2-1 filter 1142 printed with a conductive material on the upper surface of the first PCB 1101 and a 2-2 filter with a conductive material printed on the lower surface of the first PCB 1101 (1144) may be included. And the 2-1 filter 1142 and the 2-2 filter 1144 are printed on the upper and lower surfaces of the first PCB 1101, respectively, but at least some of them may be physically and electrically connected through a conductor, In this way, it may have an electrical length for implementing the second filter. In addition, the third filter 1160 includes a 3-1 filter 1162 printed with a conductive material on the upper surface of the first PCB 1101 and a 3-2 filter with a conductive material printed on the lower surface of the first PCB 1101 (1164) may be included. The 3-1 filter 1162 and the 3-2 filter 1164 are printed on the top and rear surfaces of the first PCB 1101, respectively, but at least some of them may be physically and electrically connected through a conductor, Through this, it may have an electrical length for implementing the third filter.

In the above, the conductor patterning method implemented on the printed circuit board has been described using the first to third filters as an example, but the technical details described above are the same for the first to fourth antenna segments 1110, 1130, 1150, 1170. Can be applied.

FIG. 11 is a diagram for explaining a conductive pattern printed on an antenna segment, and an enlarged view of a part of a third antenna segment 1150 and a second filter 1140 among the multi-band antennas shown in FIG. 6 to be.

In FIG. 11, only the third antenna segment and the second filter among the first to fourth antenna segments and the first to third filters are enlarged, but the third antenna segment 1150 and the second filter 1140 The technical details of the method of implementing the conductive pattern of may be equally applied to each antenna segment and each filter.

Referring to FIG. 11, in the third antenna segment 1150, an antenna element may be implemented by printing a conductive pattern 1152 on a printed circuit board. For example, the third antenna segment 1150 may be a conductive pattern 1152 and may have a meander pattern configured to have an electrical length for having a predetermined antenna characteristic. However, the implemented conductive pattern is not limited to its shape, such as straight lines, curves, and spirals, as well as meander patterns.

Information on the electrical length for having the predetermined antenna characteristic will be described later with reference to FIGS. 13 to 15.

The length of the first to fourth antenna segments may mean the length of the conductive pattern of each antenna segment. In addition, the length of the first to third filters may mean the length of the conductive pattern printed on each filter. For example, referring to FIG. 7, the length 1150 of the third antenna segment may mean the total length of the conductive pattern 1152 forming the meander pattern.

Conductive patterns of each of the third antenna segment 1150 and the second filter 1140 may be connected to each other. For example, referring to FIG. 7, a partial region of the conductive pattern 1152 corresponding to an end of the third antenna segment 1150 in physical contact with the second filter 1140 is the second filter 1152 ) May be in contact with at least a portion of the conductive pattern 1142 to be electrically connected. Therefore, in a frequency band that is not blocked by the second filter 1140, the third antenna segment 1150 and the second filter 1140 are electrically connected through respective conductive patterns 1142 and 1152. I can.

9 is a side view of a multi-band antenna according to an embodiment of the present specification.

Referring to FIG. 12, the first antenna segment 1210 of the multi-band antenna may be installed to face in a vertical direction based on a point corresponding to the feeding point 1320 of the multi-band antenna. Accordingly, the second antenna segment 1230, the third antenna segment 1250, the fourth antenna segment 1270, the first filter 1220, the second filter 1240, and the third filter 1260 are in the horizontal direction. It is installed so as to face, and may have a height corresponding to the position of the end portion of the first antenna segment 1210. Here, an end portion of the first antenna segment 1210 may be an end portion of the first antenna segment 1210 to which the first filter 1220 corresponds.

The second to fourth antennas 1230, 1250, and 1270 and the first to third filters 1220, 1240, and 1260 may have a height substantially equally spaced apart from the base portion 1030. Here, the spaced apart height may be at least smaller than the height of the vehicle antenna assembly.

Meanwhile, as described above with reference to FIGS. 7 to 11, the first to fourth antenna segments 1210, 1230, 1250, and 1270 may have antenna elements implemented by printing a conductive pattern on a printed circuit board.

Accordingly, the printed circuit board corresponding to the first antenna segment 1210 includes the second to fourth antenna segments 1230, 1250, and 1270 and the first to third filters 1220, 1240, and 1260 It may be a connection member configured to be spaced a predetermined distance from the unit in the vertical direction.

Referring to FIG. 12, the first antenna segment 1210 may be connected to a feed point 1320 on the base portion. An electric flow including an electric signal for a specific frequency band may be applied from a feed line 1340 applying the electric signal to the first antenna segment 1210 through the feed point 1320. Electric flow including an electric signal for the specific frequency band may be applied to the feed line 1340 through a coaxial cable 1380 and a signal line 1360.

On the other hand, the electric flow applied to the first antenna segment 1210 may be applied to the second to fourth antenna segments 1230, 1250, and 1270. Here, the applied electric flow may be radiated as a radio signal through the first to fourth antenna segments 1210, 1230, 1250, and 1270. However, the applied electric flow may not be applied to each antenna segment according to an operation function of the first to third filters 1220, 1240, and 1260.

Hereinafter, a method of operating each antenna of the vehicle antenna assembly according to the present invention as a multi-band antenna will be described.

4-2 Operating range by frequency

The antenna may have an antenna length having characteristics corresponding to its operating frequency. Here, the antenna length may be half of the wavelength length corresponding to the operating frequency, and may be the minimum length of an antenna designed to operate in the operating frequency band.

For example, the intermediate frequency band for 5G communication is 3.5GHz, and the minimum length of the corresponding antenna is 4.28cm, the LTE high frequency band is 1.7GHz, and the minimum length of the corresponding antenna is 8.82cm, and the LTE low frequency band is As 800MHz, the minimum length of the antenna corresponding thereto may be 18.735cm.

In the present invention, a frequency characteristic corresponding to a specific frequency band is a characteristic related to the above-described antenna length, and may mean a minimum length of an antenna corresponding to the specific frequency band.

13 is a diagram illustrating an operation range of an antenna segment and a filter for a first frequency band according to an embodiment of the present specification.

14 is a diagram illustrating an operation range of an antenna segment and a filter for a second frequency band according to an embodiment of the present specification.

15 is a diagram illustrating an operation range of an antenna segment and a filter for a third frequency band according to an embodiment of the present specification.

13 to 15, a first antenna segment 1310, a second antenna segment 1330, a third antenna segment 1350, a fourth antenna segment 1370, a first filter 1320, and a second The multi-band antenna composed of the filter 1340 and the third filter 1360 may be a multi-band antenna capable of operating for three different frequency bands. That is, the first and second antennas, which are multi-band antennas operating in the three frequency bands described above with reference to FIG. 4, may be configured. In the case of the third and fourth antennas that are multi-band antennas operating in two frequency bands, they may be multi-band antennas comprising a first antenna segment 1310, a first filter 1320, and a second antenna segment 1330. .

13 is a diagram illustrating an operation range 1315 of an antenna segment operating for the first frequency band when the multi-band antenna operates for the first frequency band.

The operating range 1315 of the antenna for the first frequency band is a range corresponding to the first antenna segment 1310, and the first antenna segment 1310 may be an antenna operating in the first frequency band.

The first filter 1320 may be a filter that blocks the flow of electricity having the first frequency band.

According to an example, the first filter may be a band reject filter that blocks the first frequency band, and may be a low pass filter that passes an electric flow in a frequency band lower than that of the first frequency band.

In more detail, the first filter physically connects the first antenna segment and the second antenna segment, but the first antenna segment 1310 and the second antenna segment for the electric flow in the first frequency band The antenna segment 1330 may be electrically cut off.

In addition, the first filter may electrically connect the first antenna segment 1310 and the second antenna segment 1330 to an electric flow in a frequency band lower than the first frequency band.

The first antenna segment 1310 may have an antenna length corresponding to the first frequency band. In the electric flow in the first frequency band, as described above, the first antenna segment 1310 and the second antenna segment 1330 may be blocked by the first filter 1320. Accordingly, the first antenna segment 1310 is electrically separated from the first filter 1320 and may operate as an antenna for the first frequency band.

14 is a diagram illustrating an operating range of an antenna segment operating in the second frequency band when the multi-band antenna operates in the second frequency band.

The operating range 1335 of the antenna for the second frequency band is a range corresponding to the first antenna segment 1310, the first filter 1320, and the second antenna segment 1330, and the first antenna segment 1310 , The first filter 1320 and the second antenna segment 1330 may be antennas operating in a second frequency band.

Since the filter operation of the first filter 1320 has been described above with reference to FIG. 13, a description thereof will be omitted. The second filter 1340 may be a filter that blocks the flow of electricity having the second frequency band.

The second filter 1340 may be a band reject filter that blocks the second frequency band, and may be a low pass filter that passes an electric flow in a frequency band lower than that of the second frequency band.

In more detail, the second filter 1340 physically connects the second antenna segment 1330 and the third antenna segment 1350, but the second filter 1340 is The antenna segment 1330 and the third antenna segment 1350 may be electrically blocked.

In addition, the second filter 1340 may electrically connect the second antenna segment 1330 and the third antenna segment 1350 with respect to electric flow in a frequency band lower than the second frequency band.

The sum of the lengths of the first antenna segment 1310, the first filter 1320, and the second antenna segment 1330 may be an antenna length corresponding to the second frequency band. In the electric flow in the second frequency band, the second antenna segment 1330 and the third antenna segment 1350 may be blocked by the second filter 1340 as described above. Accordingly, the first antenna segment 1310, the first filter 1320, and the second antenna segment 1330 are electrically separated from the second filter 1340, and an antenna for the second frequency band Can be operated as

FIG. 15 is a diagram illustrating an operation range of an antenna segment operating in the third frequency band when a multi-band antenna operates in a third frequency band.

The operating range 1375 of the antenna for the third frequency band is a first antenna segment 1310, a first filter 1320, a second antenna segment 1330, a second filter 1340, and a third antenna segment 1350. ), a range corresponding to the third filter 1360 and the fourth antenna segment 1370, including a first antenna segment 1310, a first filter 1320, a second antenna segment 1330, and a second filter 1340. ), the third antenna segment 1350, the third filter 1360, and the fourth antenna segment 1370 may be antennas operating in a third frequency band smaller than the first frequency band and the second frequency band.

The first filter 1320 and the second filter 1340 have been described above with reference to FIGS. 13 and 14, respectively, and thus, a description thereof will be omitted. The third filter 1360 may be a filter that blocks electric flow in the first frequency band. That is, the third filter 1360 may pass an electric flow for the third frequency band. The third filter 1360 is a component for preventing interference between antenna segments in the first frequency band, which will be described later with reference to FIG. 15.

The third filter (1360) physically connects the third antenna segment (1350) and the fourth antenna segment (1370), and the third filter (1360) provides the electric flow in the third frequency band. The third antenna segment 1350 and the fourth antenna segment 1370 may be electrically connected.

A first antenna segment 1310, a first filter 1320, a second antenna segment 1330, a second filter 1340, a third antenna segment 1350, a third filter 1360, and a fourth antenna segment ( 1370 may have an antenna length corresponding to the third frequency band. Accordingly, a first antenna segment 1310, a first filter 1320, a second antenna segment 1330, a second filter 1340, a third antenna segment 1350, a third filter 1360, and a fourth antenna The segment 1370 may operate as an antenna for the third frequency band.

The first frequency band described above in FIGS. 10 to 15 is a 3.5 GHz band as an intermediate frequency band for 5G communication, the second frequency band is a 1.7 GHz band as a high frequency band for 4G communication, and the third frequency band Is a low frequency band for 4G communication and may be an 800MHz band.

Hereinafter, details on preventing mutual interference between antenna segments for a specific frequency band of a multi-band antenna will be described later.

4-3 Prevention of interference by filter

4-3-1 3rd, 4th antenna segment

16 and 17 are side views of a multi-band antenna showing lengths of a plurality of antenna segments and filters according to an embodiment of the present specification.

FIG. 16 is a side view of a multi-band antenna showing a difference in length between the third antenna segment 1450, the fourth antenna segment 1470, and the third filter 1460 and the first antenna segment 1410. Referring to FIG. 16, the sum of the length of the third antenna segment (1455), the length of the third filter (1465), and the length of the fourth antenna segment (1475) is a frequency characteristic for a first frequency band. It may be larger than the minimum length of the antenna to have. Alternatively, a sum of the length 1455 of the third antenna segment, the length of the third filter 1465, and the length of the fourth antenna segment 1475 may be greater than the length 1415 of the first antenna segment.

In FIG. 16, arrows indicating bidirectional directions indicate a length of a configuration of a multi-band antenna corresponding to each arrow, and may be a length of a conductive pattern of each antenna configuration or a length of an antenna element. That is, the length of the arrows shown in FIG. 16 may not directly match the length of the configuration corresponding to each arrow.

When the third filter 1460 does not consider the operation of blocking the electric flow in a specific frequency band, the third antenna segment 1450, the third filter 1460, and the fourth antenna segment 1470 It may integrally have a frequency characteristic corresponding to the first frequency band. In this case, the third antenna segment 1450, the third filter 1460, and the fourth antenna segment 1470 may cause mutual interference with respect to the radio signal for the first frequency band.

As described above with reference to FIG. 15, the third filter 1460 may operate as a filter that blocks electric flow in the first frequency band.

According to an example, the third filter 1460 may be a band reject filter that blocks the first frequency band, may be a low pass filter that passes a frequency band lower than the first frequency band, and the third filter It may be a band pass filter for a frequency band.

As a result, the third filter 1460 physically connects the third antenna segment 1450 and the fourth antenna segment 1470 and electrically connects the third frequency band to the first frequency band. The third antenna segment 1450 and the fourth antenna segment 1470 may be electrically cut off with respect to the electric flow of.

Each length of the third antenna segment 1450, the fourth antenna segment 1470, and the third filter 1460 may be smaller than a minimum length for having a frequency characteristic of the first frequency band. In more detail, lengths 1455, 1465, and 1475 of each of the third antenna segment, the fourth antenna segment, and the third filter may be smaller than the length 1415 of the first antenna segment.

Accordingly, the third antenna segment 1450, the third filter 1460, and the fourth antenna segment 1470 may not have a frequency characteristic corresponding to the first frequency band. And since the lengths (1455, 1465, 1475) of each of the third antenna segment, the fourth antenna segment, and the third filter are smaller than a minimum length for having a frequency characteristic of the first frequency band, the third antenna segment In operation 1450, mutual interference with respect to the first frequency band by the fourth antenna segment 1470 and the third filter 1460 may be prevented.

4-3-2 second antenna segment

17 is a side view of a multi-band antenna showing a difference in length between a second antenna segment and a first antenna segment.

As described above with reference to FIG. 14, by disposing a first filter 1420 that blocks an electric flow in a first frequency band between the first antenna segment 1410 and the second antenna segment 1430, the first frequency For a band, the first antenna segment 1410 operates as an antenna, and for a second frequency band lower than the first frequency band, the first antenna segment 1410, the first filter 1420, and the second The antenna segment 1430 may operate as an antenna for the second frequency band.

According to an example, the second antenna segment 1430 is a length value excluding the lengths of the first antenna segment 1410 and the first filter 1420 from a minimum length having a frequency characteristic for the second frequency band Can have

Here, when the length of the second antenna segment (1435) is greater than the minimum length having a frequency characteristic for the first frequency band, the first antenna segment (1410) and the second antenna segment (1410) for the first frequency band Mutual interference between the antenna segments 1430 may occur.

To prevent this, the length 1435 of the second antenna segment may have a value greater than the minimum length for having the frequency characteristic of the first frequency band. Alternatively, the length 1435 of the second antenna segment may be configured to have a larger value than the length 1415 of the first antenna segment. In this case, mutual interference of the second antenna segment 1430 with respect to the first frequency band can be prevented, and an improved degree of isolation between the first antenna segment 1410 and the second antenna segment 1430 is provided. can do.

4-4 Distance from common ground plane

18 is a side view of a multi-band antenna showing a distance relationship between a common ground plane and each antenna segment according to an embodiment of the present specification.

18, a first antenna segment 1510, a second antenna segment 1530, a third antenna segment 1550, and a fourth antenna segment 1570 are each common ground plane of the multi-band antenna. Plane) (1590) may have a distal end.

The end portion may refer to an area farthest from a feed point for any one of the first to fourth antenna segments 1510, 1530, 1550, and 1570. The end portion may be referred to as an open-end point of each antenna segment.

For example, the end portion 1514 of the first antenna segment may refer to an end of the first antenna segment 1510 adjacent to the first filter 1520 among the regions of the first antenna segment 1510. have. The end portion 1534 of the second antenna segment may refer to an end of the second antenna segment 1530 adjacent to the second filter 1520 in the region of the second antenna segment 1530. The end portion 1554 of the third antenna segment may refer to an end portion of the third antenna segment 1550 adjacent to the third filter 1560 in the region of the third antenna segment 1550. The end portion 1574 of the fourth antenna segment may refer to an end portion of the fourth antenna segment 1570 that is not adjacent to the third filter 1560 in the region of the fourth antenna segment 1570. .

18, the shortest distance from the common ground plane 1590 to the end portion 1514 of the first antenna segment is an end portion 1534, 1554, 1574 of any one of the second to fourth antenna segments. May be less than the shortest distance to ).

As described above with reference to FIGS. 13 to 15, the first antenna segment 1510 may operate as an antenna for a first frequency band. Accordingly, the radio wave signal for the first frequency band may form a radiation pattern around a region corresponding to the first antenna segment 1510.

In addition, the first antenna segment 1510, the first filter 1520, and the second antenna segment 1530 may operate as antennas for a second frequency band. Accordingly, the radio wave signal for the second frequency band may form a radiation pattern around a region corresponding to the first antenna segment 1510, the first filter 1520, and the second antenna segment 1530. have.

In addition, the first antenna segment (1510), the first filter (1520), the second antenna segment (1530), the second filter (1540), the third antenna segment (1550), the third filter ( 1560) and the fourth antenna segment 1570 may operate as antennas for a third frequency band. Accordingly, the radio signal for the third frequency band is the first antenna segment (1510), the first filter (1520), the second antenna segment (1530), the second filter (1540), the third antenna A radiation pattern may be formed around an area corresponding to the segment 1550, the third filter 1560, and the fourth antenna segment 1570.

In the antenna for the first frequency band, a radio wave having a first radiation pattern for the operating frequency may have a smaller wavelength than the radio wave for the second frequency. In this case, the direction of the first radiation pattern is lowered by making the distance between the antenna for the first frequency band and the ground plane separated by a predetermined distance or less, thereby improving the radiation pattern of the antenna for the first frequency band. I can.

In contrast, in the antenna for the second frequency band, the radio wave having the second radiation pattern for the operating frequency may have a larger wavelength length compared to the radio wave for the first frequency. In this case, by reducing the influence of the ground plane on the second radiation pattern by making the distance between the antenna for the second frequency band and the ground plane separated by a predetermined distance or more, the antenna for the second frequency band It can prevent the reduction of the radiation efficiency.

18, the shortest distance from the common ground plane 1590 to the terminating end 1514 of the first antenna segment is from the common ground plane 1590 to the terminating end 1534 of the second antenna segment. May be less than the shortest distance. That is, since the antenna for the first frequency band is located closer to the common ground plane than the antenna for the second frequency band that is smaller than the first frequency, antenna transmission and reception for the first and second frequency bands Each of the performance can be improved.

Similarly, the shortest distance from the common ground plane 1590 to the end portion 1514 of the first antenna segment may be less than the shortest distance from the common ground plane 1590 to the end portion 1574 of the fourth antenna segment. have. That is, the antenna for the first frequency band is located at a closer distance to the common ground plane 1590 than the antenna for the third frequency band smaller than the first frequency, so that the antenna is located in the first and third frequency bands. Each antenna transmission and reception performance can be improved.

Alternatively, the shortest distance from the common ground plane 1590 to the end portion 1534 of the second antenna segment may be smaller than the shortest distance from the common ground plane 1590 to the end portion 1574 of the fourth antenna segment. have. That is, the antenna for the second frequency band is located closer to the common ground plane 1590 than the antenna for the third frequency band, which is smaller than the second frequency, so that the antenna is located in the second and third frequency bands. Each antenna transmission and reception performance can be improved.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments of the present invention described above may be implemented separately or in combination with each other.

Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

Claims (10)

As an integrated antenna module,
Base;
A multi-band antenna installed on the base and having at least a first frequency band and a second frequency band, which is a frequency band smaller than the first frequency band, as an operating frequency band, one end of which is connected to a first feed point, A first-first antenna segment having a frequency characteristic length corresponding to the first frequency band, a first filter physically connected to the other end of the first-first antenna segment and blocking electrical flow in the first frequency band, and A 1-2 antenna segment connected to the 1-1 antenna segment through the first filter and having a frequency characteristic length corresponding to the second frequency band integrally with the 1-1 antenna segment and the first filter A first antenna including a; And
A multi-band antenna installed on the base and performing a multi-in multi-out (MIMO) function with the first antenna having at least the first frequency band and the second frequency band as an operating frequency band, one end of which 2-1 antenna segment connected to the second feed point and having a frequency characteristic length corresponding to the first frequency band, physically connected to the other end of the 2-1 antenna segment, and electricity for the first frequency band Through the second filter and the second filter for blocking the flow and improving the degree of isolation for the first antenna, the second filter is connected to the 2-1 antenna segment, the 2-1 antenna segment and the second filter integrally Including; a second antenna including a 2-2 antenna segment having a frequency characteristic length corresponding to the second frequency band,
The distal ends of the first antenna and the distal ends of the second antenna face different directions,
When viewed from the top of the integrated antenna module,
The first antenna has a first axis toward the distal end of the first antenna from the first feed point, the second antenna has a second axis toward the distal end of the second antenna from the second feed point,
The extension line of the first axis and the extension line of the second axis are orthogonal
Integrated antenna module.
The method of claim 1,
The distal end of the first antenna includes at least one of the distal end of the 1-1 antenna segment and the distal end of the 1-2 antenna segment, and the distal end of the second antenna is the distal end of the 2-1 antenna segment and Including at least one of the distal ends of the 2-2 antenna segment
Integrated antenna module.
delete The method of claim 1,
A radiation pattern corresponding to the first frequency band by the first antenna and a radiation pattern corresponding to the first frequency band by the second antenna are orthogonal to each other.
Integrated antenna module.
The method of claim 1,
The second filter reduces interference between a radiation pattern corresponding to the first frequency band by the first antenna and a radiation pattern corresponding to the first frequency band by the second antenna.
Integrated antenna module.
The method of claim 1,
The first and second filters function as a band-stop filter or a low-pass filter for a first frequency band.
Integrated antenna module.
The method of claim 1,
The integrated antenna module further comprises a third antenna operating in a third frequency band, the operating frequency of which is the third frequency band, and a fourth antenna performing a beautiful appearance with the third antenna,
The radiation pattern for the third frequency band of the third antenna is orthogonal to the radiation pattern for the third frequency band of the fourth antenna.
Integrated antenna module.
In the vehicle smart antenna device,
Base;
A multi-band antenna installed on the base and having at least a first frequency band and a second frequency band, which is a frequency band smaller than the first frequency band, as an operating frequency band, one end of which is connected to a first feed point, A first-first antenna segment having a frequency characteristic length corresponding to the first frequency band, a first filter physically connected to the other end of the first-first antenna segment and blocking electrical flow in the first frequency band, and 1-2 antenna segment connected to the 1-1 antenna segment through the first filter and having a frequency characteristic length corresponding to the second frequency band integrally with the 1-1 antenna segment and the first filter A first antenna including a and installed on the base, having at least the first frequency band and the second frequency band as an operating frequency band, and performing a multi-in multi-out (MIMO) function with the first antenna As a multi-band antenna, a 2-1 antenna segment having one end connected to a second feed point and having a frequency characteristic length corresponding to the first frequency band, and physically connected to the other end of the 2-1 antenna segment, and the The 2-1 antenna segment and the 2-1 antenna segment are connected to the 2-1 antenna segment through a second filter and the second filter for blocking electric flow in the first frequency band and improving isolation for the first antenna. An antenna module including a second antenna including a second antenna segment having a frequency characteristic length corresponding to the second frequency band integrally with the second filter; And
A processor module installed on the base and outputting a digital signal based on an electrical signal for at least one of the first frequency band and the second frequency band provided from the antenna module;
The distal end of the first antenna and the distal end of the second antenna face different directions,
When viewed from the top of the vehicle smart antenna device,
The first antenna has a first axis toward the distal end of the first antenna from the first feed point, the second antenna has a second axis toward the distal end of the second antenna from the second feed point,
The extension line of the first axis and the extension line of the second axis are orthogonal
Smart antenna device for vehicles.
The method of claim 8,
The distal end of the first antenna includes at least one of the distal end of the 1-1 antenna segment and the distal end of the 1-2 antenna segment, and the distal end of the second antenna is the distal end of the 2-1 antenna segment and Including at least one of the distal ends of the 2-2 antenna segment
Vehicle smart antenna device.
The method of claim 8,
The second filter reduces interference between a radiation pattern corresponding to the first frequency band by the first antenna and a radiation pattern corresponding to the first frequency band by the second antenna.
Vehicle smart antenna device.

Images