WO2021112285A1

WO2021112285A1 - Antenna system loaded in vehicle

Info

Publication number: WO2021112285A1
Application number: PCT/KR2019/017062
Authority: WO
Inventors: 유한필; 유승우
Original assignee: 엘지전자 주식회사
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2021-06-10

Abstract

An antenna system loaded in a vehicle according to the present invention may comprise: a circuit board configured to have multiple antennas arranged thereon; a first antenna configured to be connected to the circuit board through a first power feeding part to radiate a first signal through a first slot and a first metal pattern printed on a first dielectric structure; and a second antenna configured to be connected to the circuit board through a second power feeding part to radiate a second signal through a second slot and a second metal pattern on the second dielectric structure.

Description

Vehicle-mounted antenna system

The present invention relates to an antenna system mounted on a vehicle. More particularly, it relates to an antenna system having a broadband antenna so as to be operable in various communication systems, and a vehicle having the same.

Electronic devices may be divided into mobile/portable terminals and stationary terminals depending on whether they can be moved. Again, the electronic device can be divided into a handheld terminal and a vehicle mounted terminal according to whether the user can directly carry the electronic device.

The functions of electronic devices are diversifying. For example, there are functions for data and voice communication, photo and video shooting through a camera, voice recording, music file playback through a speaker system, and output of images or videos to the display unit. Some terminals add an electronic game play function or perform a multimedia player function. In particular, recent mobile terminals can receive multicast signals that provide broadcast and visual content such as video or television programs.

As such electronic devices have diversified functions, they are implemented in the form of multimedia devices equipped with complex functions, such as, for example, taking pictures or videos, playing music or video files, and receiving games and broadcasts. have.

In order to support and increase the function of the electronic device, it may be considered to improve the structural part and/or the software part of the terminal.

In addition to the above attempts, a wireless communication system using LTE communication technology has recently been commercialized for electronic devices to provide various services. In addition, it is expected that a wireless communication system using 5G communication technology will be commercialized in the future to provide various services. Meanwhile, some of the LTE frequency bands may be allocated to provide 5G communication services.

In this regard, the mobile terminal may be configured to provide 5G communication services in various frequency bands. Recently, attempts have been made to provide a 5G communication service using the Sub6 band below the 6GHz band. However, in the future, it is expected that 5G communication service will be provided using millimeter wave (mmWave) band other than Sub6 band for faster data rate.

Recently, the necessity of providing such a communication service through a vehicle is increasing. Meanwhile, in relation to a communication service, the necessity for a 5G communication service, which is a next-generation communication service, as well as an existing communication service such as Long Term Evolution (LTE) is emerging.

Accordingly, a broadband antenna operating in both the LTE frequency band and the 5G Sub6 frequency band needs to be disposed in the vehicle other than the electronic device. However, a wideband antenna such as a cone antenna has problems in that a vertical profile increases and weight increases as the overall antenna size, particularly, a height increases.

In addition, a broadband antenna such as a cone antenna may be implemented in a three-dimensional structure compared to a conventional planar antenna. In addition, there is a need to implement multiple input/output (MIMO) in an electronic device or vehicle to improve communication reliability and communication capacity. For this, it is necessary to arrange a plurality of broadband antennas in an electronic device or vehicle.

Accordingly, there is a problem in that there is no specific arrangement structure for arranging the cone antennas having such a three-dimensional structure in an electronic device or vehicle while maintaining a low level of mutual interference.

In addition, there is a need to improve antenna performance while maintaining a low profile structure in such a three-dimensional antenna system. However, in the three-dimensional antenna system, in addition to the height of the antenna itself, a mechanism structure for mounting and fixing the antenna to a vehicle is required. Accordingly, there is a problem in that the antenna performance should be improved while maintaining the structure of the mechanism below a certain height.

On the other hand, when such an antenna system is disposed in a vehicle, a plurality of antennas may be disposed. Among these antennas, an antenna operating in a low band (LB) of 600 MHz to 960 MHz has a problem that it is difficult to satisfy wideband performance in the corresponding band. have.

SUMMARY OF THE INVENTION The present invention aims to solve the above and other problems. In addition, another object is to improve the antenna performance while maintaining the height of the antenna system mounted in the vehicle below a certain level.

Another object of the present invention is to propose a structure for mounting an antenna system operable in a broadband in a vehicle to support various communication systems.

Another object of the present invention is to provide an antenna configuration capable of wideband operation in a low band (LB).

Another object of the present invention is to provide an antenna configuration capable of improving radiation performance while operating in a wide band in a middle band (MB) and a high band (HB) in addition to the low band (LB).

In order to achieve the above or other objects, an antenna system mounted on a vehicle according to the present invention includes: a circuit board configured to arrange a plurality of antennas; to radiate a first signal through a first metal pattern and a first slot printed on a first dielectric structure. a first antenna configured to be connected to the circuit board through a first feeding unit; and a second antenna configured to be connected to the circuit board through a second feeder so as to radiate a second signal through a second metal pattern and a second slot on the second dielectric structure.

According to an embodiment, a transceiver circuit for controlling to radiate a signal through at least one of the first antenna and the second antenna may be further included.

According to an embodiment, the first antenna may operate in a first band corresponding to the low band LB, and may include a first portion and a second portion to be connected to one side and one end of the circuit board. Meanwhile, the second antenna may operate in a first band corresponding to the low band LB, and may include a first portion and a second portion to be connected to the other end and one end of the circuit board.

According to an embodiment, the transceiver is operatively coupled to the transceiver circuit, and the transmit/receive to perform multiple input/output (MIMO) in a first band corresponding to a low band (LB) through the first antenna and the second antenna. It may further include a baseband processor configured to control the sub-circuit.

According to an embodiment, the first metal pattern formed under the first dielectric structure may be connected to a ground metal pattern of the circuit board. Meanwhile, the first power supply unit may be connected to a first signal line of a dielectric region inside the ground metal pattern of the circuit board.

According to an embodiment, the second metal pattern formed under the second dielectric structure may be connected to a ground metal pattern of the circuit board. Meanwhile, the second power supply unit may be connected to a second signal line in a dielectric region inside the ground metal pattern of the circuit board.

According to an embodiment, to radiate a third signal through a third metal pattern and a third slot printed on a third dielectric structure disposed at one end of the circuit board, through the circuit board and the third feeding unit It may further include a third antenna configured to be connected. In addition, a fourth metal pattern printed on a fourth dielectric structure disposed at the other end of the circuit board and a fourth signal configured to radiate a fourth signal through a fourth slot are connected to the circuit board through a fourth feeder. 4 may further include an antenna.

According to an embodiment, the third metal pattern formed under the third dielectric structure may be connected to a ground metal pattern of the circuit board. Also, the fourth metal pattern formed under the fourth dielectric structure may be connected to a ground metal pattern of the circuit board.

According to an embodiment, the third power supply unit may be connected to a third signal line in a dielectric region inside the ground metal pattern of the circuit board. Also, the fourth power supply unit may be connected to a fourth signal line in a dielectric region inside the ground metal pattern of the circuit board.

According to an embodiment, the baseband processor is configured to perform multiple input/output (MIMO) in a second band corresponding to a middle band (MB) through the third antenna and the fourth antenna. can be configured to control

According to an embodiment, the baseband processor performs carrier aggregation through a first signal of the first band received through the first antenna and a third signal of the second band received through the third antenna. aggregation (CA) can be performed. In addition, the baseband processor is configured to perform carrier aggregation (CA) through a second signal of the first band received through the second antenna and a fourth signal of the second band received through the fourth antenna. can be performed.

According to an embodiment, to radiate a fifth signal through a fifth metal pattern and a fifth slot printed on a fifth dielectric structure disposed at one end of the circuit board, through the circuit board and the fifth feeder It may further include a fifth antenna configured to be connected. In addition, a sixth metal pattern printed on a sixth dielectric structure disposed at the other end of the circuit board and a sixth signal configured to radiate a sixth signal through a sixth slot, the circuit board being connected through a sixth feeding unit It may further include 6 antennas.

According to an embodiment, the fifth antenna may be disposed between the first antenna and the third antenna. Meanwhile, the sixth antenna may be disposed between the second antenna and the fourth antenna.

According to an embodiment, the fifth metal pattern formed under the fifth dielectric structure may be connected to a ground metal pattern of the circuit board. Meanwhile, the sixth metal pattern formed under the sixth dielectric structure may be connected to a ground metal pattern of the circuit board.

According to an embodiment, the fifth power supply unit may be connected to a fifth signal line in a dielectric region inside the ground metal pattern of the circuit board. Meanwhile, the fourth power supply unit may be connected to a sixth signal line in a dielectric region inside the ground metal pattern of the circuit board.

According to an embodiment, the baseband processor is configured to control the transceiver circuit to perform multiple input/output (MIMO) in a third band corresponding to a high band (MB) through the fifth antenna and the sixth antenna. can be

According to an embodiment, the baseband processor performs carrier aggregation through a first signal of the first band received through the first antenna and a sixth signal of the third band received through the sixth antenna. aggregation (CA) can be performed. In addition, the baseband processor is configured to perform carrier aggregation (CA) through a second signal of the first band received through the second antenna and a fifth signal of the third band received through the fifth antenna. can perform

According to an embodiment, the first antenna to the sixth antenna may be configured to radiate the first signal to the sixth signal in an outward direction of the circuit board through the first slot to the sixth slot. .

According to an embodiment, in the first antenna to the sixth antenna, the first metal pattern to the sixth metal pattern may be formed on an outer surface of the first dielectric structure to the sixth dielectric structure. Meanwhile, the first to sixth metal patterns may not be formed on inner surfaces of the first to sixth dielectric structures.

According to an embodiment, at least one of the first signal line to the sixth signal line corresponding to the first feeding unit to the sixth power feeding unit includes a first signal pad and a second signal pad spaced apart from each other by a predetermined interval. can do.

According to an embodiment, a first matching element disposed between the first signal pad and the second signal pad may be included. The apparatus may further include a second matching device disposed between the first signal pad and the ground metal pattern and a third matching device disposed between the second signal pad and the ground metal pattern.

According to an embodiment, at least one of the first feeder to the sixth feeder may be connected to the first signal pad. Meanwhile, the rest of the first to sixth power feeders may be connected to the second signal pad.

An antenna system mounted on a vehicle and technical effects of a vehicle equipped with the antenna system will be described as follows.

According to the present invention, there is an advantage that low-profile antennas can be arranged for each band through a slot antenna implemented on a dielectric structure in an antenna system mounted on a vehicle.

According to the present invention, there is an advantage that the radiation pattern of the antenna in the antenna system mounted on the vehicle can be improved in the horizontal direction.

In addition, according to the present invention, there is an advantage that radiation efficiency can be increased while operating a low band (LB) antenna in a wide band in an antenna system mounted on a vehicle.

In addition, according to the present invention, there is an advantage that the level of interference between different antennas can be reduced in an antenna system mounted on a vehicle.

In addition, according to the present invention, it is possible to present a structure for mounting an antenna system operable in a broadband in a vehicle in order to support various communication systems by implementing a low-band (LB) antenna and other antennas in one antenna module. There is this.

In addition, according to the present invention, there is an advantage in that the antenna system can be optimized with different antennas in the low band (LB) and other bands, and the antenna system can be arranged in an optimal configuration and performance within the roof frame of the vehicle.

In addition, according to the present invention, there is an advantage that multiple input/output (MIMO) and diversity operations can be implemented in an antenna system of a vehicle using a plurality of antennas in a specific band.

Further scope of applicability of the present invention will become apparent from the following detailed description. However, it should be understood that the detailed description and specific embodiments such as preferred embodiments of the present invention are given by way of illustration only, since various changes and modifications within the spirit and scope of the present invention may be clearly understood by those skilled in the art.

1 is a block diagram illustrating an electronic device related to the present invention.

2A to 2C show a structure in which the antenna system can be mounted in the vehicle in the vehicle including the antenna system mounted on the vehicle according to the present invention.

3 is a block diagram referenced for explaining a vehicle according to an embodiment of the present invention.

4 shows the configuration of a wireless communication unit of an electronic device or vehicle operable in a plurality of wireless communication systems according to the present invention.

5A is a conceptual diagram illustrating a vehicle configured to communicate with a base station according to an example.

5B illustrates an antenna and an antenna radiation pattern that may be mounted on a vehicle according to an example.

6 illustrates an antenna system that may be mounted inside a vehicle roof frame according to an exemplary embodiment.

7A is a perspective view of a plurality of antennas that may be disposed in an antenna system according to an exemplary embodiment.

7B is a perspective view of a plurality of antennas that may be disposed in the antenna system according to an exemplary embodiment, as viewed from another side.

8A shows a configuration in which various types of antennas according to the present invention are connected to a circuit board through a power supply unit and arranged so that ground planes are interconnected.

FIG. 8B is an enlarged view of a configuration in which a power supply unit and a metal pattern of the antenna of FIG. 8A are connected to a circuit board.

9 shows a configuration of different types of antennas according to an embodiment.

10 illustrates a configuration in which a signal pad in a circuit board having an impedance matching circuit including a plurality of matching elements and a power supply unit of an antenna are connected according to an exemplary embodiment.

11 illustrates a block diagram of a wireless communication system to which the methods proposed in this specification can be applied.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numerals regardless of reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "part" for the components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have a meaning or role distinct from each other by themselves. In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed herein is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention , should be understood to include equivalents or substitutes.

Terms including an ordinal number, such as first, second, etc., may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as "comprises" or "have" are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Electronic devices described herein include mobile phones, smart phones, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), navigation systems, and slate PCs. , tablet PCs, ultrabooks, wearable devices, for example, watch-type terminals (smartwatch), glass-type terminals (smart glass), HMD (head mounted display), etc. may be included. have.

However, it will be readily apparent to those skilled in the art that the configuration according to the embodiment described in this specification may be applied to a fixed terminal such as a digital TV, a desktop computer, and a digital signage, except when applicable only to a mobile terminal. will be.

Meanwhile, the vehicle-mounted antenna system referred to in this specification mainly refers to an antenna system disposed outside the vehicle, but may include a mobile terminal (electronic device) disposed inside the vehicle or possessed by a user riding in the vehicle. .

1 is a block diagram illustrating an electronic device related to the present invention. Here, the electronic device may include a mobile terminal (electronic device) disposed inside the vehicle or carried by a user riding in the vehicle. Meanwhile, a vehicle on which a communication system such as an antenna system is mounted may be referred to as an electronic device.

The electronic device 100 includes a wireless communication unit 110 , an input unit 120 , a sensing unit 140 , an output unit 150 , an interface unit 160 , a memory 170 , a control unit 180 , and a power supply unit 190 . ) and the like. The components shown in FIG. 1 are not essential for implementing the electronic device, and thus the electronic device described herein may have more or fewer components than those listed above.

More specifically, the wireless communication unit 110 among the components, between the electronic device 100 and the wireless communication system, between the electronic device 100 and another electronic device 100, or the electronic device 100 and an external server It may include one or more modules that enable wireless communication between them. Also, the wireless communication unit 110 may include one or more modules for connecting the electronic device 100 to one or more networks. Here, the one or more networks may be, for example, a 4G communication network and a 5G communication network.

The wireless communication unit 110 may include at least one of a 4G wireless communication module 111 , a 5G wireless communication module 112 , a short-range communication module 113 , and a location information module 114 .

The 4G wireless communication module 111 may transmit and receive a 4G signal with a 4G base station through a 4G mobile communication network. In this case, the 4G wireless communication module 111 may transmit one or more 4G transmission signals to the 4G base station. In addition, the 4G wireless communication module 111 may receive one or more 4G reception signals from the 4G base station.

In this regard, Up-Link (UL) Multi-Input Multi-Output (MIMO) may be performed by a plurality of 4G transmission signals transmitted to the 4G base station. In addition, Down-Link (DL) Multi-Input Multi-Output (MIMO) may be performed by a plurality of 4G reception signals received from a 4G base station.

The 5G wireless communication module 112 may transmit and receive a 5G signal with a 5G base station through a 5G mobile communication network. Here, the 4G base station and the 5G base station may have a Non-Stand-Alone (NSA) structure. For example, the 4G base station and the 5G base station may be a co-located structure disposed at the same location in a cell. Alternatively, the 5G base station may be disposed in a stand-alone (SA) structure at a location separate from the 4G base station.

The 5G wireless communication module 112 may transmit and receive a 5G signal with a 5G base station through a 5G mobile communication network. In this case, the 5G wireless communication module 112 may transmit one or more 5G transmission signals to the 5G base station. In addition, the 5G wireless communication module 112 may receive one or more 5G reception signals from the 5G base station.

In this case, the 5G frequency band may use the same band as the 4G frequency band, and this may be referred to as LTE re-farming. Meanwhile, as the 5G frequency band, the Sub6 band, which is a band below 6 GHz, may be used.

On the other hand, a millimeter wave (mmWave) band may be used as a 5G frequency band to perform broadband high-speed communication. When a millimeter wave (mmWave) band is used, the electronic device 100 may perform beam forming for communication coverage expansion with a base station.

Meanwhile, regardless of the 5G frequency band, the 5G communication system may support a larger number of Multi-Input Multi-Output (MIMO) in order to improve transmission speed. In this regard, Up-Link (UL) MIMO may be performed by a plurality of 5G transmission signals transmitted to the 5G base station. In addition, Down-Link (DL) MIMO may be performed by a plurality of 5G reception signals received from a 5G base station.

Meanwhile, the wireless communication unit 110 may be in a dual connectivity (DC) state with the 4G base station and the 5G base station through the 4G wireless communication module 111 and the 5G wireless communication module 112 . In this way, the dual connection with the 4G base station and the 5G base station may be referred to as EN-DC (EUTRAN NR DC). Here, EUTRAN is an Evolved Universal Telecommunication Radio Access Network, which means a 4G wireless communication system, and NR is New Radio, which means a 5G wireless communication system.

On the other hand, if the 4G base station and the 5G base station have a co-located structure, throughput improvement is possible through inter-CA (Carrier Aggregation). Therefore, the 4G base station and the 5G base station In the EN-DC state, the 4G reception signal and the 5G reception signal may be simultaneously received through the 4G wireless communication module 111 and the 5G wireless communication module 112 .

Short-range communication module 113 is for short-range communication, Bluetooth (Bluetooth), RFID (Radio Frequency Identification), infrared communication (Infrared Data Association; IrDA), UWB (Ultra Wideband), ZigBee, NFC At least one of (Near Field Communication), Wireless-Fidelity (Wi-Fi), Wi-Fi Direct, and Wireless Universal Serial Bus (USB) technologies may be used to support short-range communication. The short-distance communication module 114, between the electronic device 100 and a wireless communication system, between the electronic device 100 and another electronic device 100, or the electronic device 100 through wireless area networks (Wireless Area Networks) ) and a network in which another electronic device 100 or an external server is located may support wireless communication. The local area network may be a local area network (Wireless Personal Area Networks).

Meanwhile, short-range communication between electronic devices may be performed using the 4G wireless communication module 111 and the 5G wireless communication module 112 . In an embodiment, short-distance communication may be performed between electronic devices using a device-to-device (D2D) method without going through a base station.

On the other hand, for transmission speed improvement and communication system convergence (convergence), carrier aggregation (CA) using at least one of the 4G wireless communication module 111 and the 5G wireless communication module 112 and the Wi-Fi communication module 113 This can be done. In this regard, 4G + WiFi carrier aggregation (CA) may be performed using the 4G wireless communication module 111 and the Wi-Fi communication module 113 . Alternatively, 5G + WiFi carrier aggregation (CA) may be performed using the 5G wireless communication module 112 and the Wi-Fi communication module 113 .

The location information module 114 is a module for acquiring a location (or current location) of an electronic device, and a representative example thereof includes a Global Positioning System (GPS) module or a Wireless Fidelity (WiFi) module. For example, if the electronic device utilizes a GPS module, it may acquire the location of the electronic device by using a signal transmitted from a GPS satellite. As another example, if the electronic device utilizes the Wi-Fi module, the location of the electronic device may be acquired based on information of the Wi-Fi module and a wireless access point (AP) that transmits or receives a wireless signal. If necessary, the location information module 114 may perform any function of the other modules of the wireless communication unit 110 to obtain data on the location of the electronic device as a substitute or additionally. The location information module 114 is a module used to obtain the location (or current location) of the electronic device, and is not limited to a module that directly calculates or obtains the location of the electronic device.

Specifically, if the electronic device utilizes the 5G wireless communication module 112, it is possible to acquire the location of the electronic device based on the information of the 5G wireless communication module and the 5G base station that transmits or receives the wireless signal. In particular, since the 5G base station of the millimeter wave (mmWave) band is deployed in a small cell having a narrow coverage, it is advantageous to obtain the location of the electronic device.

The input unit 120 includes a camera 121 or an image input unit for inputting an image signal, a microphone 122 or an audio input unit for inputting an audio signal, and a user input unit 123 for receiving information from a user, for example, , a touch key, a push key, etc.). The voice data or image data collected by the input unit 120 may be analyzed and processed as a user's control command.

The sensing unit 140 may include one or more sensors for sensing at least one of information in the electronic device, surrounding environment information surrounding the electronic device, and user information. For example, the sensing unit 140 may include a proximity sensor 141, an illumination sensor 142, an illumination sensor, a touch sensor, an acceleration sensor, a magnetic sensor, and gravity. Sensor (G-sensor), gyroscope sensor, motion sensor, RGB sensor, infrared sensor (IR sensor: infrared sensor), fingerprint sensor (finger scan sensor), ultrasonic sensor , optical sensors (eg, cameras (see 121)), microphones (see 122), battery gauges, environmental sensors (eg, barometers, hygrometers, thermometers, radiation detection sensors, It may include at least one of a thermal sensor, a gas sensor, etc.) and a chemical sensor (eg, an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the electronic device disclosed in the present specification may combine and utilize information sensed by at least two or more of these sensors.

The output unit 150 is for generating an output related to visual, auditory or tactile sense, and includes at least one of a display unit 151 , a sound output unit 152 , a haptip module 153 , and an optical output unit 154 . can do. The display unit 151 may implement a touch screen by forming a layer structure with the touch sensor or being formed integrally with the touch sensor. Such a touch screen may function as the user input unit 123 providing an input interface between the electronic device 100 and the user, and may provide an output interface between the electronic device 100 and the user.

The interface unit 160 serves as a passage with various types of external devices connected to the electronic device 100 . Such an interface unit 160, a wired / wireless headset port (port), an external charger port (port), a wired / wireless data port (port), a memory card (memory card) port, for connecting a device equipped with an identification module It may include at least one of a port, an audio input/output (I/O) port, a video input/output (I/O) port, and an earphone port. In response to the connection of the external device to the interface unit 160 , the electronic device 100 may perform appropriate control related to the connected external device.

In addition, the memory 170 stores data supporting various functions of the electronic device 100 . The memory 170 may store a plurality of application programs (or applications) driven in the electronic device 100 , data for operation of the electronic device 100 , and commands. At least some of these application programs may be downloaded from an external server through wireless communication. In addition, at least some of these application programs may exist on the electronic device 100 from the time of shipment for basic functions (eg, incoming calls, outgoing functions, message reception, and outgoing functions) of the electronic device 100 . Meanwhile, the application program may be stored in the memory 170 , installed on the electronic device 100 , and driven to perform an operation (or function) of the electronic device by the controller 180 .

In addition to the operation related to the application program, the controller 180 generally controls the overall operation of the electronic device 100 . The controller 180 may provide or process appropriate information or functions to the user by processing signals, data, information, etc. input or output through the above-described components or by driving an application program stored in the memory 170 .

Also, the controller 180 may control at least some of the components discussed with reference to FIG. 1 in order to drive an application program stored in the memory 170 . Furthermore, in order to drive the application program, the controller 180 may operate at least two or more of the components included in the electronic device 100 in combination with each other.

The power supply unit 190 receives external power and internal power under the control of the control unit 180 to supply power to each component included in the electronic device 100 . The power supply 190 includes a battery, and the battery may be a built-in battery or a replaceable battery.

At least some of the respective components may operate in cooperation with each other to implement an operation, control, or control method of an electronic device according to various embodiments described below. Also, the operation, control, or control method of the electronic device may be implemented on the electronic device by driving at least one application program stored in the memory 170 .

2A to 2C show a structure in which the antenna system can be mounted in the vehicle in the vehicle including the antenna system mounted on the vehicle according to the present invention. In this regard, FIGS. 2A and 2B illustrate a configuration in which the antenna system 1000 is mounted on or within a roof of a vehicle. Meanwhile, FIG. 2C shows a structure in which the antenna system 1000 is mounted in a roof frame of a vehicle roof and a rear mirror.

2A to 2C , in the present invention, in order to improve the appearance of a vehicle (vehicle) and preserve telematics performance in a collision, the existing Shark Fin antenna is replaced with a non-protruding flat antenna. want to In addition, the present invention intends to propose an antenna in which an LTE antenna and a 5G antenna are integrated in consideration of 5G (5G) communication along with the existing mobile communication service (LTE) provision.

Referring to FIG. 2A , the antenna system 1000 is disposed on the roof of the vehicle. In FIG. 2A , a radome 2000a for protecting the antenna system 1000 from an external environment and an external impact when driving a vehicle may surround the antenna system 1000 . The radome 2000a may be made of a dielectric material through which a radio wave signal transmitted/received between the antenna system 1000 and the base station may be transmitted.

Referring to FIG. 2B , the antenna system 1000 may be disposed within a roof structure of a vehicle, and may be configured such that at least a portion of the roof structure is made of a non-metal. In this case, at least a part of the roof structure 2000b of the vehicle may be made of a non-metal, and may be made of a dielectric material through which a radio signal transmitted/received between the antenna system 1000 and the base station may be transmitted.

Also, referring to FIG. 2C , the antenna system 1000 may be disposed inside a roof frame of a vehicle, and at least a portion of the roof frame 2000c may be configured to be implemented with a non-metal. At this time, at least a portion of the roof frame 2000c of the vehicle 300 may be made of a non-metal, and may be made of a dielectric material through which a radio signal transmitted/received between the antenna system 1000 and the base station may be transmitted.

On the other hand, the antenna system 1000 may be installed on the front or rear of the vehicle depending on the application other than the roof structure or roof frame of the vehicle. Meanwhile, FIG. 3 is a block diagram referenced to describe a vehicle according to an embodiment of the present invention.

Referring to FIG. 3 , the vehicle 300 may include wheels rotated by a power source and a steering input device for controlling the traveling direction of the vehicle 300 .

The vehicle 300 may be an autonomous driving vehicle. The vehicle 300 may be switched to an autonomous driving mode or a manual mode (a capital driving mode) based on a user input. For example, the vehicle 300 may be switched from the manual mode to the autonomous driving mode or from the autonomous driving mode to the manual mode based on a user input received through the user interface device 310 .

The vehicle 300 may be switched to an autonomous driving mode or a manual mode based on driving situation information. The driving situation information may be generated based on object information provided by the object detection apparatus 320 . For example, the vehicle 300 may be switched from the manual mode to the autonomous driving mode or from the autonomous driving mode to the manual mode based on driving situation information generated by the object detection device 320 .

For example, the vehicle 300 may be switched from the manual mode to the autonomous driving mode or from the autonomous driving mode to the manual mode based on driving situation information received through the communication device 400 . The vehicle 300 may be switched from the manual mode to the autonomous driving mode or from the autonomous driving mode to the manual mode based on information, data, and signals provided from an external device.

When the vehicle 300 is operated in the autonomous driving mode, the autonomous driving vehicle 300 may be operated based on a driving system. For example, the autonomous vehicle 300 may be operated based on information, data, or signals generated by the driving system, the vehicle taking-out system, and the parking system.

When the vehicle 300 is operated in the manual mode, the autonomous driving vehicle 300 may receive a user input for driving through the driving manipulation device. Based on the user input received through the driving manipulation device, the vehicle 300 may be driven.

The overall length refers to the length from the front part to the rear part of the vehicle 300 , the width refers to the width of the vehicle 300 , and the height refers to the length from the lower part of the wheel to the roof. In the following description, the overall length direction (L) is the standard direction for measuring the overall length of the vehicle 300 , the full width direction (W) is the standard direction for measuring the full width of the vehicle 300 , and the total height direction (H) is the vehicle (300) may refer to a direction as a reference for measuring the total height.

As illustrated in FIG. 3 , the vehicle 300 may include a user interface device 310 , an object detection device 320 , a navigation system 350 , and a communication device 400 . In addition, the vehicle may further include a sensing unit 361 , an interface unit 362 , a memory 363 , a power supply unit 364 , and a vehicle control unit 365 in addition to the above-described device. Here, the sensing unit 361 , the interface unit 362 , the memory 363 , the power supply unit 364 , and the vehicle control device 365 have low direct relevance to wireless communication through the antenna system 1000 according to the present invention. . Accordingly, a detailed description thereof will be omitted herein.

Depending on the embodiment, the vehicle 300 may further include other components in addition to the components described herein, or may not include some of the components described herein.

The user interface device 310 is a device for communication between the vehicle 300 and a user. The user interface device 310 may receive a user input and provide information generated in the vehicle 300 to the user. The vehicle 300 may implement User Interfaces (UIs) or User Experiences (UXs) through the user interface device 310 .

The object detecting device 320 is a device for detecting an object located outside the vehicle 300 . The object may be various objects related to the operation of the vehicle 300 . Meanwhile, the object may be classified into a moving object and a fixed object. For example, the moving object may be a concept including other vehicles and pedestrians. For example, the fixed object may be a concept including a traffic signal, a road, and a structure.

The object detection apparatus 320 may include a camera 321 , a radar 322 , a lidar 323 , an ultrasonic sensor 324 , an infrared sensor 325 , and a processor 330 .

According to an embodiment, the object detecting apparatus 320 may further include other components in addition to the described components, or may not include some of the described components.

The processor 330 may control the overall operation of each unit of the object detection apparatus 320 . The processor 330 may detect and track the object based on the acquired image. The processor 330 may perform operations such as calculating a distance to an object and calculating a relative speed with respect to an object through an image processing algorithm.

The processor 330 may detect and track the object based on the reflected electromagnetic wave that is reflected by the object and returns. The processor 330 may perform operations such as calculating a distance to an object and calculating a relative speed with respect to the object based on the electromagnetic wave.

The processor 330 may detect and track the object based on the reflected laser light from which the transmitted laser is reflected by the object and returned. The processor 330 may perform operations such as calculating a distance to an object and calculating a relative speed with respect to the object based on the laser light.

The processor 330 may detect and track the object based on the reflected ultrasound reflected back by the transmitted ultrasound. The processor 330 may perform operations such as calculating a distance to an object and calculating a relative speed with respect to the object based on the ultrasound.

The processor 330 may detect and track the object based on the reflected infrared light reflected back by the transmitted infrared light. The processor 330 may perform operations such as calculating a distance to an object and calculating a relative speed with respect to the object based on the infrared light.

According to an embodiment, the object detecting apparatus 320 may include a plurality of processors 330 or may not include the processors 330 . For example, each of the camera 321 , the radar 322 , the lidar 323 , the ultrasonic sensor 324 , and the infrared sensor 325 may individually include a processor.

When the object detection apparatus 320 does not include the processor 330 , the object detection apparatus 320 may be operated under the control of the processor or the controller 370 of the apparatus in the vehicle 300 .

The navigation system 350 may provide location information of the vehicle based on information obtained through the communication device 400 , in particular, the location information unit 420 . Also, the navigation system 350 may provide a route guidance service to a destination based on current location information of the vehicle. In addition, the navigation system 350 may provide guide information about a surrounding location based on information obtained through the object detection device 320 and/or the V2X communication unit 430 . Meanwhile, it is possible to provide guidance information, autonomous driving service, etc. based on V2V, V2I, and V2X information obtained through the wireless communication unit 460 operating together with the antenna system 1000 according to the present invention.

The object detection apparatus 320 may be operated under the control of the controller 370 .

The communication apparatus 400 is an apparatus for performing communication with an external device. Here, the external device may be another vehicle, a mobile terminal, or a server.

The communication device 400 may include at least one of a transmit antenna, a receive antenna, a radio frequency (RF) circuit capable of implementing various communication protocols, and an RF element to perform communication.

The communication device 400 may include a short-range communication unit 410 , a location information unit 420 , a V2X communication unit 430 , an optical communication unit 440 , a broadcast transceiver 450 , and a processor 470 .

According to an embodiment, the communication device 400 may further include other components in addition to the described components, or may not include some of the described components.

The short-range communication unit 410 is a unit for short-range communication. The short-range communication unit 410, Bluetooth (Bluetooth), RFID (Radio Frequency Identification), infrared communication (Infrared Data Association; IrDA), UWB (Ultra Wideband), ZigBee, NFC (Near Field Communication), Wi-Fi (Wireless) -Fidelity), Wi-Fi Direct, and wireless USB (Wireless Universal Serial Bus) technology may be used to support short-distance communication.

The short-range communication unit 410 may form wireless area networks to perform short-range communication between the vehicle 300 and at least one external device.

The location information unit 420 is a unit for obtaining location information of the vehicle 300 . For example, the location information unit 420 may include a Global Positioning System (GPS) module or a Differential Global Positioning System (DGPS) module.

The V2X communication unit 430 is a unit for performing wireless communication with a server (V2I: Vehicle to Infra), another vehicle (V2V: Vehicle to Vehicle), or a pedestrian (V2P: Vehicle to Pedestrian). The V2X communication unit 430 may include an RF circuit capable of implementing protocols for communication with infrastructure (V2I), vehicle-to-vehicle communication (V2V), and communication with pedestrians (V2P).

The optical communication unit 440 is a unit for performing communication with an external device via light. The optical communication unit 440 may include an optical transmitter that converts an electrical signal into an optical signal and transmits the optical signal, and an optical receiver that converts the received optical signal into an electrical signal.

According to an embodiment, the light transmitter may be formed to be integrated with a lamp included in the vehicle 300 .

The broadcast transceiver 450 is a unit for receiving a broadcast signal from an external broadcast management server or transmitting a broadcast signal to the broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, and a data broadcast signal.

The wireless communication unit 460 is a unit that performs wireless communication with one or more communication systems through one or more antenna systems. The wireless communication unit 460 may transmit and/or receive a signal to a device in the first communication system through the first antenna system. Also, the wireless communication unit 460 may transmit and/or receive a signal to a device in the second communication system through the second antenna system. Here, the first communication system and the second communication system may be an LTE communication system and a 5G communication system, respectively. However, the first communication system and the second communication system are not limited thereto and can be extended to any different communication systems.

According to the present invention, the antenna system 1000 operating in the first and second communication systems may be arranged on the roof, in the roof or in the roof frame of the vehicle 300 according to one of FIGS. 2A to 2C of the vehicle 300 . . Meanwhile, the wireless communication unit 460 of FIG. 3 may operate in both the first and second communication systems, and may be combined with the antenna system 1000 to provide multiple communication services to the vehicle 300 .

The processor 470 may control the overall operation of each unit of the communication device 400 .

According to an embodiment, the communication device 400 may include a plurality of processors 470 or may not include the processors 470 .

When the communication device 400 does not include the processor 470 , the communication device 400 may be operated under the control of a processor or control unit 370 of another device in the vehicle 300 .

Meanwhile, the communication device 400 may implement a vehicle display device together with the user interface device 310 . In this case, the vehicle display device may be referred to as a telematics device or an AVN (Audio Video Navigation) device.

The communication device 400 may be operated under the control of the controller 370 .

Included in the vehicle 300, one or more processors and control unit 370, ASICs (application specific integrated circuits), DSPs (digital signal processors), DSPDs (digital signal processing devices), PLDs (programmable logic devices), FPGAs ( field programmable gate arrays), processors, controllers, micro-controllers, microprocessors, and other electrical units for performing functions.

The vehicle 300 related to the present invention may operate in any one of a manual driving mode and an autonomous driving mode. That is, the driving mode of the vehicle 300 may include a manual driving mode and an autonomous driving mode.

Hereinafter, embodiments related to a structure of a multiple transmission/reception system according to the present invention and an electronic device or vehicle having the same will be described with reference to the accompanying drawings. Specifically, embodiments related to a broadband antenna operating in a heterogeneous radio system, an electronic device having the same, and a vehicle will be described. It is apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

4 shows the configuration of a wireless communication unit of an electronic device or vehicle operable in a plurality of wireless communication systems according to the present invention. Referring to FIG. 4 , the electronic device or vehicle includes a first power amplifier 210 , a second power amplifier 220 , and an RFIC 1250 . In addition, the electronic device or vehicle may further include a modem (Modem, 1400) and an application processor (AP: Application Processor, 1450). Here, the modem (Modem, 1400) and the application processor (AP, 1450) are physically implemented on one chip, and may be implemented in a logically and functionally separated form. However, the present invention is not limited thereto and may be implemented in the form of physically separated chips depending on the application.

Meanwhile, the electronic device or vehicle includes a plurality of low noise amplifiers (LNAs) 210a to 240a in the receiver. Here, the first power amplifier 210 , the second power amplifier 220 , the controller 1250 , and the plurality of low-noise amplifiers 210a to 240a are all operable in the first communication system and the second communication system. In this case, the first communication system and the second communication system may be a 4G communication system and a 5G communication system, respectively.

As shown in FIG. 4 , the RFIC 1250 may be configured as a 4G/5G integrated type, but is not limited thereto and may be configured as a 4G/5G separate type according to an application. When the RFIC 1250 is configured as a 4G/5G integrated type, it is advantageous in terms of synchronization between 4G/5G circuits, as well as the advantage that control signaling by the modem 1400 can be simplified.

Meanwhile, when the RFIC 1250 is configured as a 4G/5G separate type, it may be referred to as a 4G RFIC and a 5G RFIC, respectively. In particular, when the difference between the 5G band and the 4G band is large, such as when the 5G band is configured as a millimeter wave band, the RFIC 1250 may be configured as a 4G/5G separate type. As such, when the RFIC 1250 is configured as a 4G/5G separate type, there is an advantage that RF characteristics can be optimized for each of the 4G band and the 5G band.

On the other hand, even when the RFIC 1250 is configured as a 4G/5G separate type, the 4G RFIC and the 5G RFIC are logically and functionally separated, and it is also possible to be physically implemented on a single chip.

Meanwhile, the application processor (AP) 1450 is configured to control the operation of each component of the electronic device. Specifically, the application processor (AP) 1450 may control the operation of each component of the electronic device through the modem 1400 .

For example, the modem 1400 may be controlled through a power management IC (PMIC) for low power operation of the electronic device. Accordingly, the modem 1400 may operate the power circuits of the transmitter and the receiver in the low power mode through the RFIC 1250 .

In this regard, when it is determined that the electronic device is in an idle mode, the application processor (AP) 1450 may control the RFIC 1250 through the modem 1400 as follows. For example, if the electronic device is in an idle mode, the RFIC through the modem 1400 so that at least one of the first and

second power amplifiers

210 and 220 is operated in a low power mode or turned off (1250) can be controlled.

According to another embodiment, when the electronic device is in a low battery mode, the application processor (AP) 1450 may control the modem 1400 to provide wireless communication capable of low power communication. For example, when the electronic device is connected to a plurality of entities among a 4G base station, a 5G base station, and an access point, the application processor (AP) 1450 may control the modem 1400 to enable wireless communication with the lowest power. Accordingly, even if the throughput is somewhat sacrificed, the application processor (AP) 1450 may control the modem 1400 and the RFIC 1250 to perform short-range communication using only the short-range communication module 113 .

According to another embodiment, when the remaining battery level of the electronic device is equal to or greater than a threshold, the modem 1400 may be controlled to select an optimal wireless interface. For example, the application processor (AP) 1450 may control the modem 1400 to receive through both the 4G base station and the 5G base station according to the remaining battery level and available radio resource information. In this case, the application processor (AP) 1450 may receive the remaining battery level information from the PMIC and the available radio resource information from the modem 1400 . Accordingly, if the battery level and available radio resources are sufficient, the application processor (AP) 1450 may control the modem 1400 and the RFIC 1250 to receive through both the 4G base station and the 5G base station.

Meanwhile, in the multi-transceiving system of FIG. 4 , the transmitter and receiver of each radio system may be integrated into one transceiver. Accordingly, there is an advantage that a circuit part integrating two types of system signals in the RF front-end can be removed.

In addition, since the front-end components can be controlled by the integrated transceiver, the front-end components can be more efficiently integrated than when the transmission/reception system is separated for each communication system.

In addition, when each communication system is separated, it is impossible to control other communication systems as necessary, or efficient resource allocation is impossible because the system delay is increased. On the other hand, the multi-transmission/reception system as shown in FIG. 2 has the advantage that it is possible to control other communication systems as necessary, and thus system delay can be minimized, thereby enabling efficient resource allocation.

Meanwhile, the first power amplifier 210 and the second power amplifier 220 may operate in at least one of the first and second communication systems. In this regard, when the 5G communication system operates in the 4G band or the Sub6 band, the first and second power amplifiers 220 may operate in both the first and second communication systems.

On the other hand, when the 5G communication system operates in the millimeter wave (mmWave) band, one of the first and

second power amplifiers

210 and 220 operates in the 4G band, and the other operates in the millimeter wave band. have.

Meanwhile, by integrating the transceiver and the receiving unit, two different wireless communication systems can be implemented with one antenna by using an antenna for both transmitting and receiving. In this case, 4x4 MIMO can be implemented using four antennas as shown in FIG. 2 . In this case, 4x4 DL MIMO may be performed through the downlink (DL).

Meanwhile, if the 5G band is the Sub6 band, the first to fourth antennas ANT1 to ANT4 may be configured to operate in both the 4G band and the 5G band. On the other hand, if the 5G band is a millimeter wave (mmWave) band, the first to fourth antennas ANT1 to ANT4 may be configured to operate in any one of the 4G band and the 5G band. In this case, if the 5G band is a millimeter wave (mmWave) band, each of a plurality of separate antennas may be configured as an array antenna in the millimeter wave band.

Meanwhile, 2x2 MIMO implementation is possible using two antennas connected to the first power amplifier 210 and the second power amplifier 220 among the four antennas. In this case, 2x2 UL MIMO (2 Tx) may be performed through the uplink (UL). Alternatively, it is not limited to 2x2 UL MIMO, and may be implemented with 1 Tx or 4 Tx. In this case, when the 5G communication system is implemented as 1 Tx, only one of the first and

second power amplifiers

210 and 220 may operate in the 5G band. On the other hand, when the 5G communication system is implemented as 4Tx, an additional power amplifier operating in the 5G band may be further provided. Alternatively, a transmission signal may be branched in each of one or two transmission paths, and the branched transmission signal may be connected to a plurality of antennas.

On the other hand, since a switch-type splitter or a power divider is built inside the RFIC corresponding to the RFIC 1250, there is no need for a separate component to be disposed outside, thereby improving component mountability. can Specifically, by using a single pole double throw (SPDT) type switch inside the RFIC corresponding to the controller 250 , it is possible to select the transmitter (TX) of two different communication systems.

In addition, the electronic device or vehicle capable of operating in a plurality of wireless communication systems according to the present invention may further include a duplexer 231 , a filter 232 , and a switch 233 .

The duplexer 231 is configured to mutually separate signals of a transmission band and a reception band. At this time, the signals of the transmission band transmitted through the first and

second power amplifiers

210 and 220 are applied to the antennas ANT1 and ANT4 through the first output port of the duplexer 231 . On the other hand, signals of the reception band received through the antennas ANT1 and ANT4 are received by the

low noise amplifiers

210a and 240a through the second output port of the duplexer 231 .

The filter 232 may be configured to pass a signal of a transmission band or a reception band and block a signal of the remaining band. In this case, the filter 232 may include a transmit filter connected to a first output port of the duplexer 231 and a receive filter connected to a second output port of the duplexer 231 . Alternatively, the filter 232 may be configured to pass only a signal of a transmission band or only a signal of a reception band according to the control signal.

The switch 233 is configured to transmit either only a transmit signal or a receive signal. In an embodiment of the present invention, the switch 233 may be configured in a single pole double throw (SPDT) type to separate a transmission signal and a reception signal using a time division multiplexing (TDD) method. In this case, the transmission signal and the reception signal are signals of the same frequency band, and accordingly, the duplexer 231 may be implemented in the form of a circulator.

On the other hand, in another embodiment of the present invention, the switch 233 is also applicable to a frequency division multiplexing (FDD: Time Division Duplex) scheme. In this case, the switch 233 may be configured in a double pole double throw (DPDT) type to connect or block a transmission signal and a reception signal, respectively. Meanwhile, since the transmission signal and the reception signal can be separated by the duplexer 231 , the switch 233 is not necessarily required.

Meanwhile, the electronic device or vehicle according to the present invention may further include a modem 1400 corresponding to a control unit. In this case, the RFIC 1250 and the modem 1400 may be referred to as a first controller (or first processor) and a second controller (second processor), respectively. Meanwhile, the RFIC 1250 and the modem 1400 may be implemented as physically separate circuits. Alternatively, the RFIC 1250 and the modem 1400 may be physically or logically divided into one circuit.

The modem 1400 may control and process signals for transmission and reception of signals through different communication systems through the RFIC 1250 . The modem 1400 may be obtained through control information received from the 4G base station and/or the 5G base station. Here, the control information may be received through a physical downlink control channel (PDCCH), but is not limited thereto.

The modem 1400 may control the RFIC 1250 to transmit and/or receive a signal through the first communication system and/or the second communication system in a specific time and frequency resource. Accordingly, the RFIC 1250 may control transmission circuits including the first and

second power amplifiers

210 and 220 to transmit a 4G signal or a 5G signal in a specific time period. Also, the RFIC 1250 may control receiving circuits including the first to fourth low-noise amplifiers 210a to 240a to receive a 4G signal or a 5G signal in a specific time period.

Meanwhile, an antenna system in which a plurality of antennas mounted on a vehicle according to FIGS. 2 to 4 are disposed and a vehicle having the same will be described as follows. In this regard, FIG. 5A is a conceptual diagram illustrating a vehicle configured to communicate with a base station according to an example. Meanwhile, FIG. 5B shows an antenna and an antenna radiation pattern that may be mounted on a vehicle according to an example.

Referring to FIG. 5A , a vehicle 300 on a road may perform wireless communication with

different base stations

600 and 700 . In this regard, the

different base stations

600 and 700 may be base stations that perform 4G/5G wireless communication. Specifically, the vehicle 300 may perform wireless communication by performing handover between the first base station 600 and the second base station 700 . Alternatively, the vehicle 300 may be in a dual connectivity (DC) state in which both the first base station 600 and the second base station 700 maintain a connected state. In this case, one of the first base station 600 and the second base station 600 may be a base station of the first communication system, and the other may be a base station of the second communication system.

In addition, referring to FIG. 5B , the vehicle 300 may request antenna characteristics of an omni-directional radiation pattern for communication with a GSM/LTE/5G base station. In this regard, the antenna currently mounted on the vehicle is an antenna of a monopole structure inside an external shark antenna module. Such an external shark antenna module may protrude into the vehicle. In addition, the external shark antenna module does not have enough space for the plurality of antennas to perform multiple input/output (MIMO) while covering the broadband of the plurality of communication systems.

In order to solve this problem, the antenna system according to the present invention needs to be designed with a plurality of antennas to perform multiple input/output (MIMO) while minimizing the height protruding to the outside.

On the other hand, the requirements of the vehicle antenna system according to the present invention are as follows.

- Vehicle antenna requirements: low elevation, i.e. mean gain -2dB in the range of 70 to 90 degrees of elevation. That is, the average gain corresponding to the performance of horizontal radiation in the almost horizontal direction corresponding to low elevation is -2dB.

- Limitations of the prior art: With the antenna technology using the space inside the module, it is difficult to satisfy the antenna performance requirements due to performance degradation due to low antenna height.

- Necessity of the present invention: An antenna structure is required for improving antenna performance without additional height increase for securing antenna performance.

In this regard, the low band (LB) antenna issue is as follows. In the on-ground environment of the vehicle and the design space of the antenna height of 17 mm or less, the beam peak is formed vertically, so it is difficult to satisfy the low elevation performance. In this regard, the shark antenna having a low elevation characteristic at less than 1 GHz may be located in an area outside the vehicle. On the other hand, the vehicle antenna to be implemented in the present invention needs to be implemented to have a low height of 17 mm or less.

To this end, for vehicle design, the requirement to mount an externally exposed shark antenna inside the vehicle may be added. Accordingly, there is a need for a design technique for an antenna having a non-directional radiation pattern while structurally maintaining a low profile. Accordingly, the present invention intends to propose a slot antenna module structure for a low-profile structure and an omni-directional radiation pattern.

Meanwhile, the antenna system according to the present invention may be mounted on or inside the roof of the vehicle or inside the roof frame. In this regard, FIG. 6 illustrates an antenna system that may be mounted inside a vehicle roof frame according to an exemplary embodiment. Also, FIG. 7A is a perspective view of a plurality of antennas that may be disposed in an antenna system according to an exemplary embodiment. On the other hand, FIG. 7B is a perspective view viewed from another side of a plurality of antennas that may be disposed in the antenna system according to an embodiment.

Meanwhile, FIG. 8A shows a configuration in which various types of antennas according to the present invention are connected to a circuit board through a power feeding unit, and a ground plane is arranged to be interconnected. In this regard, FIG. 8B is an enlarged view of a configuration in which a power feeding unit and a metal pattern of the antenna of FIG. 8A are connected to a circuit board.

Therefore, the concept of the present invention is to modularize a slot antenna having an omni-directional radiation pattern as described above for each band/structure as shown in FIGS. 7A to 8B .

Therefore, it is intended to propose a slot antenna designed in a wall-type dielectric structure with a low height and advantageous mounting by mounting a plurality of antennas on a PCB as required by a plurality of communication systems. Here, the shape of the dielectric structure may be a rectangular parallelepiped shape such as a wall shape, but is not limited thereto and may be changed to various shapes. Specifically, the low-band (LB) antenna may have a rectangular parallelepiped shape bent at a predetermined angle, for example, substantially 90 degrees.

In this regard, the structural and technical differences of the slot antenna according to the present invention are as follows. In order to mount an omni-directional antenna inside a vehicle roof, a low profile structural characteristic is required.

On the other hand, in the case of the prior art, it is possible to implement a monopole antenna structure having a 1) patch shape having generally required radiation characteristics and to optimize design with a minimum height at which the radiation characteristics are maintained.

Alternatively, 2) it is only possible to optimize design with a broadband monopole antenna structure having a relatively wide pattern shape having a tapered or conical shape.

However, in order to satisfy the Omni-Directional characteristic, a height of at least 1/10 wavelength (about 3 cm based on 1 GHz) is required, so various structural transformations are required for application. Accordingly, the present invention intends to propose an antenna system including a plurality of antennas having a slot antenna structure that can be implemented in a low-profile, low-profile structure even inside a vehicle roof.

6 to 8B , a vehicle including the antenna system 1000 includes a metal region corresponding to a vehicle roof frame. In addition, the vehicle may further include a non-metal region formed in the roof frame and formed to surround the periphery of the metal region.

Meanwhile, the antenna system 1000 that may be mounted on a vehicle includes a circuit board (PCB), a plurality of antennas 1100 , a transceiver circuit 1250 , and a baseband processor 1400 . It may be configured to include

A circuit board (PCB) may be configured such that a plurality of antennas 1100 are disposed. Meanwhile, the plurality of antennas 1100 may include first and second antennas LB_ANT1 , LB_ANT2 , 1100-1 and 1100-2 operating in a low band (LB). Meanwhile, the plurality of antennas 1100 may further include third and fourth antennas MB_ANT3, MB_ANT4, 1100-3, and 1100-4 operating in a middle band (MB). Also, the plurality of antennas 1100 may further include fifth and sixth antennas HB_ANT5, HB_ANT6, 1100-5, and 1100-6 operating in a high band (HB).

In this regard, the low band LB may be considered to include 650 MHz to 900 MHz or 600 MHz to 960 MHz. However, the low band LB is not limited thereto and may be changed according to applications. Meanwhile, the middle band (MB) may be regarded as a frequency band starting from 1400 MHz, but is not limited thereto and may be changed according to applications. In addition, the high band (HB) is a band higher than the middle band (MB) and may be regarded as a frequency band starting from 2500 MHz, but is not limited thereto and may be changed according to applications.

Meanwhile, the first antennas LB_ANT1 and 1100-1 radiate a first signal through a first metal pattern M1 and a first slot S1 printed on a first dielectric structure. can be configured. To this end, the first antennas LB_ANT1 and 1100-1 may be configured to be connected to the circuit board PCB through the first feeding unit F1. Meanwhile, the second antennas LB_ANT2 and 1100 - 2 may be configured to radiate the second signal through the second metal pattern M2 and the second slot S2 printed on the second dielectric structure. Here, the first signal and the second signal may be signals of the first band corresponding to the low band LB.

In this regard, the first slot S1 corresponding to the first antennas LB_ANT1 and 1100-1 and the second slot S2 corresponding to the second antennas LB_ANT2 and 1100-2 are slots implemented in the ground plane. It can operate similarly to an antenna. This is because the first metal M1 and the second metal M2 are connected to the ground of the circuit board PCB.

In this regard, in the slot antenna implemented in the Metallic (Ground) Plane, the (+) terminal and the (-) terminal are connected to the upper and lower metal regions through the slot. In addition, the λ/2-length slot has the same characteristics as the λ/2-length dipole rotated by 90 degrees in the E-field direction and radiation pattern. On the other hand, this slot antenna structure may satisfy the antenna radiation characteristics for GSM/LTE/5G Sub 6 required by the vehicle.

In addition, the slot antenna implemented on the above-described metal ground plane is similarly applicable to a medium-band (MB) antenna and a high-band (HB) antenna. Accordingly, the third slot S3 to the sixth slot S6 may also operate as slot antennas implemented on the metal ground plane as described above.

Meanwhile, the transceiver circuit 1250 may control to radiate a signal through at least one of the first antennas LB_ANT1 and 1100-1 and the second antennas LB_ANT2 and 1100-2. In addition, the baseband processor 1400 is operatively coupled to the transceiver circuit 1250 and may perform multiple input/output (MIMO) in the first band corresponding to the low band LB. To this end, the baseband processor 1400 uses the transceiver circuit 1250 to perform multiple input/output (MIMO) in the first band through the first antennas LB_ANT1 and 1100-1 and the second antennas LB_ANT2 and 1100-2. ) can be configured to control

Meanwhile, the plurality of antennas 1100 according to the present invention may be configured in different shapes depending on the operating band. In this regard, FIG. 9 shows a configuration of different types of antennas according to an embodiment.

7A to 8 and 9A , the first antennas LB_ANT1 and 1100-1 may be configured as a first type antenna 1100a. Accordingly, the first antennas LB_ANT1 and 1100-1 operate in a first band corresponding to the low band LB, and the first part P1 and the first antenna are connected to one side and one end of the circuit board PCB. It may be composed of two parts (P2).

In addition, the second antennas LB_ANT2 and 1100 - 2 may also be configured as the first type antenna 1100a. Accordingly, the second antennas LB_ANT2 and 1100 - 2 operate in the first band corresponding to the low band LB, and the first portion P1 and the second antenna are connected to the other side and one end of the circuit board PCB. It may be composed of two parts (P2).

In this regard, the first antennas LB_ANT1 and 1100-1 and the second antennas LB_ANT2 and 1100-2 operating in the same band may be disposed on different sides of the circuit board PCB. Accordingly, the first antennas LB_ANT1 and 1100-1 and the second antennas LB_ANT2 and 1100-2 may reduce interference levels and improve isolation.

On the other hand, with respect to the first antennas LB_ANT1 and 1100-1 and the second antennas LB_ANT2 and 1100-2, the lengths of the slots S1 and S2 composed of the first part P1 and the second part P2 are It may be set to 1/2 of a wavelength corresponding to the first band, which is the low band LB. In addition, the first antennas LB_ANT1 and 1100-1 and the second antennas LB_ANT2 and 1100-2 are composed of a first part P1 and a second part P2, so that the arrangement design with other antennas in a limited space is easy. It can be easily configured.

Meanwhile, with respect to the first antennas LB_ANT1 and 1100-1, the first metal pattern M1 formed under the first dielectric structure may be connected to the ground metal pattern of the circuit board PCB. Also, the first power supply unit F1 may be connected to a first signal line SL1 in a dielectric region inside the ground metal pattern of the circuit board PCB.

In a similar manner, with respect to the second antennas LB_ANT2 and 1100 - 2 , the second metal pattern M2 formed under the second dielectric structure may be connected to the ground metal pattern of the circuit board PCB. Also, the second power supply unit F2 may be connected to the second signal line SL2 of the dielectric region inside the ground metal pattern of the circuit board PCB.

Meanwhile, the antenna operating in the middle band (MB) according to the present invention may also be disposed on the circuit board (PCB) together with the low band (LB) antenna. In this regard, the third antennas MB_ANT3 and 1100 - 3 may be configured to radiate the third signal through the third metal pattern M3 and the third slot S3 printed on the third dielectric structure. In this regard, the third dielectric structure of the third antennas MB_ANT3 and 1100 - 3 is disposed at one end of the circuit board, and the third antennas MB_ANT3 and 1100 - 3 are connected to the circuit board PCB and the third feeding part. It may be configured to be connected via (F3).

Meanwhile, the fourth antennas MB_ANT4 and 1100 - 4 may be configured to radiate the fourth signal through the fourth metal pattern M4 and the fourth slot S4 printed on the fourth dielectric structure. In this regard, the fourth dielectric structure of the fourth antennas MB_ANT4 and 1100 - 4 is disposed at the other end of the circuit board, and the fourth antennas MB_ANT4 and 1100 - 4 are connected to the circuit board PCB and the fourth feeding part. It may be configured to be connected via (F4). Here, the third signal and the fourth signal may be signals of the second band corresponding to the middle band (MB).

In this regard, the third antennas MB_ANT3 and 1100 - 3 and the fourth antennas MB_ANT4 and 1100 - 4 operating in the same band may be disposed at different ends of the circuit board PCB. Accordingly, the third antennas MB_ANT3 and 1100-3 and the fourth antennas MB_ANT4 and 1100-4 may reduce interference levels and improve isolation.

Meanwhile, the third metal pattern M3 formed under the third dielectric structure of the third antennas MB_ANT3 and 1100 - 3 may be connected to the ground metal pattern of the circuit board PCB. Also, the fourth metal pattern M4 formed under the fourth dielectric structure of the fourth antennas MB_ANT4 and 1100 - 4 may be connected to the ground metal pattern of the circuit board PCB.

In relation to the power feeding method, the third power feeding part F3 may be connected to the third signal line SL3 of the dielectric region inside the ground metal pattern of the circuit board PCB. Also, the fourth power supply unit F4 may be connected to the fourth signal line SL4 in the dielectric region inside the ground metal pattern of the circuit board PCB.

Multiple input/output (MIMO) may be performed in the second band as a plurality of middle-band (HB) antennas are disposed. In this regard, the baseband processor 1400 is operatively coupled to the transceiver circuit 1250 and the transceiver circuit 1250 to perform multiple input/output (MIMO) in the second band corresponding to the middle band (MB). can control The baseband processor 1400 may be configured to perform multiple input/output (MIMO) in the second band through the third antennas MB_ANT3 and 1100 - 3 and the fourth antennas MB_ANT4 and 1100 - 4 .

Meanwhile, carrier aggregation (CA) may be performed to increase communication capacity. In this regard, the baseband processor 1400 may perform carrier aggregation (CA) through the first signal of the first band and the third signal of the second band. That is, the baseband processor 1400 configures the first signal of the first band received through the first antennas LB_ANT1 and 1100-1 and the second signal of the second band received through the third antenna MB_ANT3 and 1100-3. Carrier aggregation (CA) may be performed through 3 signals.

In this regard, carrier aggregation (CA) will be performed using the third antennas MB_ANT3 and 1100-3 spaced apart from the fourth antennas MB_ANT4 and 1100-4 adjacent to the first antennas LB_ANT1 and 1100-1. can Accordingly, it is possible to reduce the level of interference between adjacent bands during carrier aggregation (CA).

Meanwhile, during carrier aggregation through the first signal of the first band and the third signal of the second band, if the quality of the first signal or the third signal is less than or equal to a threshold, carrier aggregation may be performed through other antennas. In this regard, the baseband processor 1400 may perform carrier aggregation (CA) through the second signal of the first band and the fourth signal of the second band. That is, the baseband processor 1400 configures the second signal of the first band received through the second antennas LB_ANT2 and 1100-2 and the second signal of the second band received through the fourth antenna MB_ANT4 and 1100-4. Carrier aggregation (CA) may be performed through 4 signals.

In this regard, carrier aggregation (CA) is to be performed using the second antennas LB_ANT2 and 1100-2 and the fourth antennas MB_ANT4 and 1100-4 spaced apart from the adjacent third antennas MB_ANT3 and 1100-3. can Accordingly, it is possible to reduce the level of interference between adjacent bands during carrier aggregation (CA).

Meanwhile, the baseband processor 1400 may perform multiple input/output (MIMO) using carrier-aggregated signals. In this case, the degree of isolation between each MIMO stream is more important than the degree of isolation between CA signals. Accordingly, the baseband processor 1400 obtains first information through the first signal of the first band and the fourth signal of the second band, and through the second signal of the first band and the third signal of the second band Second information may be obtained. Accordingly, the baseband processor 1400 may reduce the level of interference between MIMO streams while performing DL-MIMO on the carrier-aggregated signal. In this case, the baseband processor 1400 controls to receive the first CA signal through the fourth antennas MB_ANT4 and 1100-4 adjacent to the first antennas LB_ANT1 and 1100-1. Also, the baseband processor 1400 controls to simultaneously receive the second CA signal through the second antennas LB_ANT2 and 1100 - 2 and the third antennas MB_ANT3 and 1100 - 3 adjacent to each other.

Similarly, the baseband processor 1400 may reduce the level of interference between MIMO streams while performing UL-MIMO on the carrier-aggregated signal. In this case, the baseband processor 1400 controls to transmit the first CA signal through the fourth antennas MB_ANT4 and 1100-4 adjacent to the first antennas LB_ANT1 and 1100-1. In addition, the baseband processor 1400 controls to simultaneously transmit the second CA signal through the second antennas LB_ANT2 and 1100 - 2 and the adjacent third antennas MB_ANT3 and 1100 - 3 .

Meanwhile, the antenna operating in the high band (HB) according to the present invention may also be disposed on the circuit board (PCB) together with the low band (LB) antenna and/or the middle band (MB). In this regard, the fifth antennas HB_ANT5 and 1100 - 5 are configured to radiate a fifth signal through the fifth metal pattern M5 and the fifth slot S5 printed on the fifth dielectric structure. In this regard, the fifth dielectric structure of the fifth antennas HB_ANT5 and 1100 - 5 is disposed at one end of the circuit board PCB and is configured to be connected to the circuit board PCB and the fifth power supply unit F5 . can be

Meanwhile, the sixth antennas HB_ANT6 and 1100 - 6 may be configured to radiate the sixth signal through the sixth metal pattern M6 and the sixth slot S6 printed on the sixth dielectric structure. In this regard, the sixth dielectric structure of the sixth antennas HB_ANT6 and 1100 - 6 is disposed at the other end of the circuit board, and the sixth antennas HB_ANT6 and 1100 - 6 are connected to the circuit board PCB and the sixth feeding part. It may be configured to be connected via (F6). Here, the fifth signal and the sixth signal may be signals of the third band corresponding to the high band HB.

7A to 8 and 9B , the third antennas MB_ANT3 and 1100-3 to the sixth antennas HB_ANT6 and 1100-6 may be configured as a second type antenna 1100b. Accordingly, the third antennas MB_ANT3 and 1100 - 3 to the sixth antenna HB_ANT6 and 1100 - 6 may be configured in a straight line to be disposed only in one area of the circuit board PCB. On the other hand, the low-band (LB) antennas such as the first antenna (LB_ANT1, 1100-1) and the second antenna (LB_ANT2, 1100-2) are disposed on both the side surface and the end of the circuit board (PCB) in the first part ( It may be composed of P1) and the second part P2.

For all types of antennas, the length of the first slot S1 to the sixth slot S6 may be set to be half the length of the wavelength of the corresponding band, thereby forming a resonance length. Accordingly, the antenna length may be determined by the length of the first slot S1 to the sixth slot S6 rather than the length of the first metal pattern M1 to the sixth metal pattern M6 to have broadband characteristics. Meanwhile, in order to reduce the area occupied by the low-band (LB) antenna, the dielectric constants of the first and second dielectric structures may be selected as dielectrics having a higher permittivity than that of other dielectric structures.

Meanwhile, the fifth antennas HB_ANT5 and 1100-5 and the sixth antenna HB_ANT6 and 1100-6 operating in the same band may be disposed at different ends of the circuit board PCB. Accordingly, the fifth antenna HB_ANT5 and 1100-5 and the sixth antenna HB_ANT6 and 1100-6 may reduce the interference level and improve the isolation.

Meanwhile, the fifth antennas HB_ANT5 and 1100 - 5 may be disposed between the first antennas LB_ANT1 and 1100-1 and the third antennas MB_ANT3 and 1100 - 3 . Accordingly, by allowing adjacent antennas to operate in different bands, interference caused by adjacent antennas of the same band can be prevented.

Also, the sixth antennas HB_ANT6 and 1100 - 6 may be disposed between the second antennas LB_ANT2 and 1100 - 2 and the fourth antennas MB_ANT4 and 1100 - 4 . Accordingly, by allowing adjacent antennas to operate in different bands, interference caused by adjacent antennas of the same band can be prevented.

Meanwhile, the fifth metal pattern M5 formed under the fifth dielectric structure of the fifth antennas HB_ANT5 and 1100 - 5 may be connected to the ground metal pattern of the circuit board PCB. Also, the sixth metal pattern M6 formed under the sixth dielectric structure of the sixth antennas HB_ANT6 and 1100 - 6 may be connected to the ground metal pattern of the circuit board PCB.

In relation to the power feeding method, the fifth power feeding unit F5 may be connected to the fifth signal line SL5 of the dielectric region inside the ground metal pattern of the circuit board PCB. Also, the sixth power supply unit F6 may be connected to the sixth signal line SL6 of the dielectric region inside the ground metal pattern of the circuit board PCB.

As a plurality of high-band (HB) antennas are disposed, multiple input/output (MIMO) may be performed in the third band. In this regard, the baseband processor 1400 is operatively coupled to the transceiver circuit 1250 and the transceiver circuit 1250 to perform multiple input/output (MIMO) in the third band corresponding to the high band (HB). can control The baseband processor 1400 may be configured to perform multiple input/output (MIMO) in the third band through the fifth antennas HB_ANT5 and 1100-5 and the sixth antenna HB_ANT6 and 1100-6.

Meanwhile, carrier aggregation (CA) may be performed to increase communication capacity. In this regard, the baseband processor 1400 may perform carrier aggregation (CA) through the first signal of the first band and the sixth signal of the third band. That is, the baseband processor 1400 configures the first signal of the first band received through the first antennas LB_ANT1 and 1100-1 and the third band of the third band received through the sixth antennas HB_ANT6 and 1100-6. It is possible to perform carrier aggregation (CA) through 6 signals.

In this regard, carrier aggregation (CA) will be performed using the first antennas LB_ANT1 and 1100-1 and the sixth antennas HB_ANT6 and 1100-6 spaced apart from the adjacent fifth antennas HB_ANT5 and 1100-5. can Accordingly, it is possible to reduce the level of interference between adjacent bands during carrier aggregation (CA).

Meanwhile, during carrier aggregation through the first signal of the first band and the sixth signal of the third band, if the quality of the first signal or the sixth signal is equal to or less than a threshold, carrier aggregation may be performed through other antennas. In this regard, the baseband processor 1400 may perform carrier aggregation (CA) through the second signal of the first band and the fourth signal of the second band. That is, the baseband processor 1400 configures the second signal of the first band received through the second antennas LB_ANT2 and 1100-2 and the second signal of the third band received through the fifth antennas HB_ANT5 and 1100-5. Carrier aggregation (CA) may be performed through 5 signals.

In this regard, carrier aggregation (CA) is to be performed using the second antennas LB_ANT2 and 1100 - 2 and the fifth antennas HB_ANT5 and 1100 - 5 spaced apart from the adjacent sixth antennas HB_ANT6 and 1100 - 6 . can Accordingly, it is possible to reduce the level of interference between adjacent bands during carrier aggregation (CA).

Meanwhile, the baseband processor 1400 may perform multiple input/output (MIMO) using carrier-aggregated signals. In this case, the degree of isolation between each MIMO stream is more important than the degree of isolation between CA signals. Accordingly, the baseband processor 1400 obtains first information through the first signal of the first band and the fifth signal of the third band, and through the second signal of the first band and the sixth signal of the third band Second information may be obtained. Accordingly, the baseband processor 1400 may reduce the level of interference between MIMO streams while performing DL-MIMO on the carrier-aggregated signal. In this case, the baseband processor 1400 controls to receive the first CA signal through the fifth antennas HB_ANT5 and 1100-5 adjacent to the first antennas LB_ANT1 and 1100-1. Also, the baseband processor 1400 controls the second antennas LB_ANT2 and 1100 - 2 and adjacent sixth antennas HB_ANT6 and 1100 - 6 to simultaneously receive the second CA signal.

Similarly, the baseband processor 1400 may reduce the level of interference between MIMO streams while performing UL-MIMO on the carrier-aggregated signal. In this case, the baseband processor 1400 controls to transmit the first CA signal through the fifth antennas HB_ANT5 and 1100-5 adjacent to the first antennas LB_ANT1 and 1100-1. Also, the baseband processor 1400 controls the second antennas LB_ANT2 and 1100 - 2 and adjacent sixth antennas HB_ANT6 and 1100 - 6 to simultaneously transmit the second CA signal.

On the other hand, wireless communication with an entity outside the vehicle in the vehicle in the low band (LB), the middle band (MB) and the high band (HB) through the antenna system 1000 having a plurality of antennas 1100 according to the present invention can be performed. In this regard, the plurality of antennas 1100 of the antenna system 1000 that may be mounted inside the vehicle roof frame may be configured to radiate signals in an outward direction. To this end, the first antennas LB_ANT1 and 1100-1 to the sixth antennas HB_ANT6 and 1100-6 radiate the first to sixth signals through the first slots S1 to S6. can be configured. That is, the first to sixth signals may be radiated outward through the first to sixth slots S1 to S6 formed in the outward direction of the circuit board PCB.

In this regard, in the first antennas LB_ANT1 and 1100-1 to the sixth antennas HB_ANT6 and 1100-6, the first metal patterns M1 to the sixth metal patterns M6 have the first dielectric structures to the sixth dielectrics. It may be formed on the outer surface of the structure. On the other hand, the first to sixth metal patterns M1 to M6 may not be formed on inner surfaces of the first to sixth dielectric structures.

In another embodiment, in the first antennas LB_ANT1 and 1100-1 to the sixth antennas HB_ANT6 and 1100-6, the first metal patterns M1 to the sixth metal patterns M6 have the first dielectric structures to the sixth dielectrics. It may also be formed on the inner surface of the structure. Meanwhile, even when the first metal pattern M1 to the sixth metal pattern M6 are formed on the inner surface, the signal must be radiated only in the outward direction. To this end, the first slots S1 to the sixth slots S6 should be formed only on the outer surfaces of the first to sixth dielectric structures.

Meanwhile, the power feeding unit of the plurality of antennas 1100 according to the present invention may be impedance matched through a signal line of a circuit board and a matching element. In this regard, FIG. 10 illustrates a configuration in which a signal pad in a circuit board having an impedance matching circuit including a plurality of matching elements and a power supply unit of an antenna are connected according to an exemplary embodiment.

8B and 10 , at least one of the first signal lines SL1 to SL6 corresponding to the first feeding units F1 to F6 is spaced apart from each other by a predetermined interval. It may include a first signal pad and a second signal pad. Meanwhile, the impedance matching circuit may include a first matching element MS1 disposed between the first signal pad and the second signal pad. Also, the impedance matching circuit may further include a second matching element MS2 disposed between the first signal pad and the ground metal pattern. Also, the impedance matching circuit may further include a third matching element MS3 disposed between the second signal pad and the ground metal pattern. Accordingly, the first matching element MS1 may be disposed to connect signal pads in the dielectric region DR. On the other hand, the second matching element MS2 and the third matching element MS3 may be disposed to connect each signal pad and the ground region in the dielectric region DR.

Meanwhile, the present invention has an advantage that impedance matching can be performed by selecting the first matching elements MS1 to MS3 having different inductance and capacitance values for each band. Meanwhile, at least one of the first feeding units F1 to F6 may be connected to the first signal pad. On the other hand, the rest of the first feeding part F1 to the sixth feeding part F6 may be connected to the second signal pad. In this regard, there is an advantage in that the impedance matching characteristic can be optimized by slightly varying the position of the feeding unit of each antenna to an arbitrary position between the first signal pad and the second signal pad.

As described above, the plurality of antennas 1100-1 to 1100-6 operating in the low-band (LB), middle-band (MB), and high-band (HB) according to the present invention includes the transceiver circuit 1250 and the may be operatively coupled. In this regard, the transceiver circuit 1250 may be disposed on the front or rear surface of the circuit board PCB. The transceiver circuit 1250 may be connected to the power supply units F1 to F6 of each antenna through a signal pad formed in a dielectric region on the front surface of the circuit board (PCB). In this regard, the transceiver circuit 1250 may control to radiate a signal through at least one of the first antennas LB_ANT1 and 1100-1 to the sixth antenna HB_ANT6 and 1100-6. Here, the transceiver circuit 1250 may be a radio frequency integrated chip (RFIC) including a power amplifier and a low noise amplifier.

In this regard, the baseband processor 1400 may be connected to the transceiver circuit 1250 to control the transceiver circuit 1250 . In this regard, the baseband processor 1400 performs multiple input/output (MIMO) and/or carrier aggregation (CA) through the first antennas LB_ANT1 and 1100-1 to the sixth antennas HB_ANT6 and 1100-6. can be configured.

Meanwhile, the baseband processor 1400 may be configured to control the transceiver circuit 1250 to perform multiple input/output (MIMO) through the first and second antennas LB ANT1 and LB ANT2 in the first frequency band. . In addition, the baseband processor 1400 may be configured to control the transceiver circuit 1250 to perform multiple input/output (MIMO) through the third and fourth antennas MB ANT1 and MB ANT2 in the second frequency band. . In addition, the baseband processor 1400 may be configured to control the transceiver circuit 1250 to perform multiple input/output (MIMO) through the fifth and sixth antennas HB ANT1 and HB ANT2 in the third frequency band. . In this regard, the interval between antennas for performing MIMO may be set to be at least 5 times or more of the operating frequency.

In the above, the antenna system 1000 that can be mounted on a vehicle according to an aspect of the present invention has been described. Hereinafter, a vehicle equipped with the antenna system 100 according to another aspect of the present invention will be described. In this regard, the description of the above-described antenna system may also be applied to a vehicle, and the description of a vehicle on which the antenna system is mounted may also be applied to the above-described antenna system.

In this regard, FIG. 3 shows a configuration of a vehicle having the antenna system according to an example of FIGS. 1 to 2C and FIGS. 4 to 10 . Meanwhile, referring to FIGS. 1 to 10 , the vehicle 300 may include the antenna system 1000 constituting at least a part of the communication device 400 . In addition, the vehicle 300 may include an object detection device, a navigation system, or the like, or a telematics module (TCU) that interworks with them. In this regard, the telematics module (TCU) may include various components other than the object detection apparatus as shown in FIG. 3 .

On the other hand, the antenna system 1000 mounted on the vehicle according to the present invention is a transceiver for controlling to radiate a signal through at least one of the first antenna (LB_ANT1, 1100-1) to the sixth antenna (HB_ANT6, 1100-6) circuit 1250 may be included. In addition, the antenna system mounted on the vehicle according to the present invention may further include a baseband processor 1400 configured to communicate with at least one of an adjacent vehicle, a Road Side Unit (RSU), and a base station through the transceiver circuit 1250. have.

Meanwhile, in the present invention, when it is necessary to simultaneously receive information from various entities such as an adjacent vehicle, an RSU, or a base station for autonomous driving, etc., there is an advantage that broadband reception is possible through MIMO. Accordingly, the vehicle can receive different information from various entities at the same time to improve the communication capacity. Accordingly, the communication capacity can be improved through the MIMO operation without extending the bandwidth in the vehicle.

Alternatively, the vehicle may simultaneously receive the same information from various entities at the same time, improving reliability for surrounding information and reducing latency. Accordingly, URLLC (Ultra Reliable Low Latency Communication) communication is possible in the vehicle and the vehicle may operate as a URLLC UE. To this end, a base station performing scheduling may preferentially allocate a time slot for a vehicle operating as a URLLC UE. For this, some of the specific time-frequency resources already allocated to other UEs may be punctured.

Meanwhile, the first and second antennas LB_ANT1 and LB_ANT2 of the antenna system of the present invention may operate as radiators in the low band LB, which is the first frequency band. Also, the third and fourth antennas MB_ANT3 and MB_ANT4 may operate as radiators in a second frequency band higher than the first frequency band. Also, the fifth and sixth antennas HB_ANT5 and HB_ANT6 may operate as radiators in a third frequency band higher than the second frequency band.

Accordingly, the baseband processor 1400 receives the first signal of the first band through at least one of the first and second antennas LB_ANT1 and LB_ANT2, and receives at least one of the third and fourth antennas MB_ANT3 and MB_ANT4. The transceiver circuit 1250 may be controlled to receive the second signal of the second band through one. Accordingly, the baseband processor 1400 may perform carrier aggregation (CA) through a band in which the first band and the second band are combined.

Also, the baseband processor 1400 receives the first signal of the first band through at least one of the first and second antennas LB_ANT1 and LB_ANT2, and receives at least one of the fifth and sixth antennas HB_ANT5 and HB_ANT6. The transceiver circuit 1250 may be controlled to receive the third signal of the third band through . Accordingly, the baseband processor 1400 may perform carrier aggregation (CA) through a band in which the first band and the third band are combined.

Also, the baseband processor 1400 receives the second signal of the second band through at least one of the third and fourth antennas MB_ANT3 and MB_ANT4, and receives at least one of the fifth and sixth antennas HB_ANT5 and HB_ANT6. The transceiver circuit 1250 may be controlled to receive the third signal of the third band through . Accordingly, the baseband processor 1400 may perform carrier aggregation (CA) through a band in which the second band and the third band are combined.

Accordingly, in the present invention, when it is necessary to receive a large amount of data for autonomous driving, there is an advantage that broadband reception is possible through carrier aggregation.

Accordingly, the vehicle may perform Enhanced Mobile Broad Band (eMBB) communication and the vehicle may operate as an eMBB UE. To this end, a base station performing scheduling may allocate a wideband frequency resource for a vehicle operating as an eMBB UE. To this end, carrier aggregation (CA) may be performed on spare frequency bands except for the frequency resources already allocated to other UEs.

Meanwhile, the broadband antenna system according to the present invention may be mounted on a vehicle in the structure shown in FIGS. 2A to 2C . That is, the vehicle on which the broadband antenna system is mounted may be mounted on the vehicle roof, inside the roof, or inside the roof frame as shown in FIGS. 2A to 2C .

On the other hand, referring to FIGS. 1 to 10 , the vehicle 300 on which the broadband antenna system according to the present invention is mounted is equipped with the antenna system 1000 , and the antenna system 1000 is provided by itself or the communication device 400 . It is possible to perform short-distance communication, wireless communication, and V2X communication. To this end, the baseband processor 1400 may control the antenna system 1000 to receive signals from, or transmit signals to, adjacent vehicles, RSUs, and base stations through the antenna system 1000 .

Alternatively, the baseband processor 1400 may control the communication device 400 to receive signals from, or transmit signals to, adjacent vehicles, RSUs, adjacent things, and base stations through the communication device 400 . Here, the information on the adjacent object may be acquired through an object detection device such as the camera 331 , the radar 332 , the lidar 333 , and the

sensors

334 and 335 of the vehicle 300 . Alternatively, the baseband processor 1400 may control the communication device 400 and the antenna system 1000 to receive signals from, or transmit signals to, adjacent vehicles, RSUs, adjacent objects, and base stations.

In this regard, referring to FIGS. 1 to 10 , the vehicle 300 including the antenna system 1000 includes a plurality of antennas LB_ANT1 to HB_ANT6 or 1100-1 to 1100-6, and a transceiver circuit 1250 . and a baseband processor 1400 .

The baseband processor 1400 receives the first signal of the first band through at least one of the first and second antennas LB_ANT1 and LB_ANT2, and through at least one of the third and fourth antennas MB_ANT3 and MB_ANT4. The transceiver circuit 1250 may be controlled to receive the second signal of the second band. Accordingly, the baseband processor 1400 may perform carrier aggregation (CA) through a band in which the first band and the second band are combined.

In this regard, the transceiver circuit 1250 may control to radiate a signal through at least one of the first antennas LB_ANT1 and 1100-1 to the sixth antenna HB_ANT6 and 1100-6. In addition, the baseband processor 1400 is configured to communicate with at least one of an adjacent vehicle, a Road Side Unit (RSU), and a base station through the transceiver circuit 1250 .

As described above, the first and second antennas LB_ANT1 and LB_ANT2 operate as radiators in the low band LB which is the first frequency band, and the third and fourth antennas MB_ANT3 and MB_ANT4 operate as radiators in the second frequency band. It can act as an emitter. In this regard, the baseband processor 1400 may control the transceiver circuit 1250 to receive the first signal of the first band from the first entity through at least one of the first and second antennas LB_ANT1 and LB_ANT2. can Also, the baseband processor 1400 may control the transceiver circuit 1250 to receive the second signal of the second band from the second entity through the third and fourth antennas MB_ANT3 and MB_ANT4. Accordingly, the baseband processor 1400 may communicate with a base station as a first entity and perform V2V communication with another vehicle as a second entity.

On the other hand, the technical characteristics of the first antennas (LB_ANT1, 1100-1) to the sixth antennas (HB_ANT6, 1100-6) of the slot antenna type according to the present invention are as follows.

The first antennas LB_ANT1 and 1100-1 may be configured to radiate a first signal through a first metal pattern M1 and a first slot S1 printed on a first dielectric structure. can To this end, the first antennas LB_ANT1 and 1100-1 may be configured to be connected to the circuit board PCB through the first feeding unit F1. Meanwhile, the second antennas LB_ANT2 and 1100 - 2 may be configured to radiate the second signal through the second metal pattern M2 and the second slot S2 printed on the second dielectric structure. Here, the first signal and the second signal may be signals of the first band corresponding to the low band LB.

The first antennas LB_ANT1 and 1100-1 may be configured as a first type antenna 1100a. Accordingly, the first antennas LB_ANT1 and 1100-1 operate in a first band corresponding to the low band LB, and the first part P1 and the first antenna are connected to one side and one end of the circuit board PCB. It may be composed of two parts (P2).

Meanwhile, the third antennas MB_ANT3 and 1100-3 to the sixth antennas HB_ANT6 and 1100-6 may be configured as the second type antenna 1100b. Accordingly, the third antennas MB_ANT3 and 1100 - 3 to the sixth antenna HB_ANT6 and 1100 - 6 may be configured in a straight line to be disposed only in one area of the circuit board PCB. On the other hand, the low-band (LB) antennas such as the first antenna (LB_ANT1, 1100-1) and the second antenna (LB_ANT2, 1100-2) are disposed on both the side surface and the end of the circuit board (PCB) in the first part ( It may be composed of P1) and the second part P2.

In the above, an antenna system mounted on a vehicle and a vehicle equipped with the antenna system have been examined. In this regard, in the case of the technology proposed in the present invention, a half-wavelength slot antenna having an omni-directional radiation characteristic is implemented by erecting a dielectric structure in the same shape as a wall. On the other hand, the slot antenna of the present invention has a resonance length of a half wavelength required for antenna resonance. Therefore, there is no need to optimize the antenna pattern according to the distance or height of the antenna from the PCB ground or the surrounding components and environment. In addition, since the optimization can be made with only a very small range of tuning using a matching device on the PCB, it is easy to modularize the components.

An antenna system having a plurality of slot antennas in this modular form is applicable to a vehicle antenna for GSM/LTE/5G Sub6 communication. In addition, there is a possibility to be applied as a modular antenna component in a condition that requires a low-profile omni-directional radiation pattern or wide coverage.

In the above, an antenna system mounted on a vehicle according to the present invention and a vehicle equipped with the antenna system have been described. An antenna system mounted on such a vehicle and a wireless communication system including a vehicle equipped with the antenna system and a base station are as follows. In this regard, FIG. 11 illustrates a block diagram of a wireless communication system to which the methods proposed in the present specification can be applied.

Referring to FIG. 11 , a wireless communication system includes a first communication device 910 and/or a second communication device 920 . 'A and/or B' may be interpreted as having the same meaning as 'including at least one of A or B'. The first communication device may represent the base station and the second communication device may represent the terminal (or the first communication device may represent the terminal and the second communication device may represent the base station).

Base station (BS) is a fixed station (fixed station), Node B, evolved-NodeB (eNB), gNB (Next Generation NodeB), BTS (base transceiver system), access point (AP: Access Point), gNB (general) NB), 5G system, network, AI system, RSU (road side unit), may be replaced by terms such as robot. In addition, the terminal (Terminal) may be fixed or have mobility, UE (User Equipment), MS (Mobile Station), UT (user terminal), MSS (Mobile Subscriber Station), SS (Subscriber Station), AMS (Advanced Mobile) Station), WT (Wireless terminal), MTC (Machine-Type Communication) device, M2M (Machine-to-Machine) device, D2D (Device-to-Device) device, vehicle, robot, AI module may be replaced by terms such as

The first communication device and the second communication device include a processor 911,921, a memory 914,924, one or more Tx/Rx radio frequency modules 915,925, Tx processors 912,922, Rx processors 913,923 , including

antennas

916 and 926 . The processor implements the functions, processes and/or methods salpinned above. More specifically, in DL (communication from a first communication device to a second communication device), an upper layer packet from the core network is provided to the processor 911 . The processor implements the functions of the L2 layer. In DL, the processor provides multiplexing between logical channels and transport channels, allocation of radio resources to the second communication device 920, and is responsible for signaling to the second communication device. A transmit (TX) processor 912 implements various signal processing functions for the L1 layer (ie, the physical layer). The signal processing function facilitates forward error correction (FEC) in the second communication device, and includes coding and interleaving. The coded and modulated symbols are divided into parallel streams, each stream mapped to OFDM subcarriers, multiplexed with a reference signal (RS) in the time and/or frequency domain, and using Inverse Fast Fourier Transform (IFFT) are combined together to create a physical channel carrying a stream of time domain OFDMA symbols. The OFDM stream is spatially precoded to generate multiple spatial streams. Each spatial stream may be provided to a different antenna 916 via a separate Tx/Rx module (or transceiver) 915 . Each Tx/Rx module may modulate an RF carrier with a respective spatial stream for transmission. In the second communication device, each Tx/Rx module (or transceiver) 925 receives a signal via each antenna 926 of each Tx/Rx module. Each Tx/Rx module recovers information modulated with an RF carrier and provides it to a receive (RX) processor 923 . The RX processor implements the various signal processing functions of layer 1. The RX processor may perform spatial processing on the information to recover any spatial streams destined for the second communication device. If multiple spatial streams are destined for the second communication device, they may be combined into a single OFDMA symbol stream by multiple RX processors. The RX processor uses a Fast Fourier Transform (FFT) to transform the OFDMA symbol stream from the time domain to the frequency domain. The frequency domain signal includes a separate OFDMA symbol stream for each subcarrier of the OFDM signal. The symbols and reference signal on each subcarrier are recovered and demodulated by determining the most probable signal placement points transmitted by the first communication device. These soft decisions may be based on channel estimate values. The soft decisions are decoded and deinterleaved to recover the data and control signal originally transmitted by the first communication device on the physical channel. Corresponding data and control signals are provided to a processor 921 .

The UL (second communication device to first communication device) is handled in the first communication device 910 in a manner similar to that described with respect to the receiver function in the second communication device 920 . Each Tx/Rx module 925 receives a signal via a respective antenna 926 . Each Tx/Rx module provides an RF carrier and information to the RX processor 923 . The processor 921 may be associated with a memory 924 that stores program code and data. Memory may be referred to as a computer-readable medium.

An antenna system mounted on such a vehicle and technical effects of a vehicle equipped with the antenna system will be described as follows.

In relation to the present invention described above, it is possible to design a plurality of antennas of an antenna system mounted on a vehicle and a configuration for controlling them and to drive them as computer-readable codes in a medium in which a program is recorded. Do. The computer-readable medium includes any type of recording device in which data readable by a computer system is stored. Examples of computer-readable media include Hard Disk Drive (HDD), Solid State Disk (SSD), Silicon Disk Drive (SDD), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. There is also a carrier wave (eg, transmission over the Internet) that is implemented in the form of. In addition, the computer may include a control unit of the terminal. Accordingly, the above detailed description should not be construed as restrictive in all respects but as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention.

Claims

In the antenna system mounted on a vehicle,

a circuit board configured to have a plurality of antennas disposed thereon;

to radiate a first signal through a first metal pattern and a first slot printed on a first dielectric structure. a first antenna configured to be connected to the circuit board through a first feeding unit;

a second antenna configured to be connected to the circuit board through a second feeder so as to radiate a second signal through a second metal pattern and a second slot on the second dielectric structure; and

and a transceiver circuit that controls to radiate a signal through at least one of the first antenna and the second antenna.
According to claim 1,

The first antenna operates in a first band corresponding to the low band LB, and is composed of a first part and a second part to be connected to one side and one end of the circuit board,

The second antenna operates in a first band corresponding to a low band (LB), and is configured of a first part and a second part so as to be connected to the other side and one end of the circuit board.
According to claim 1,

operatively coupled to the transceiver circuit and configured to control the transceiver circuit to perform multiple input/output (MIMO) in a first band corresponding to a low band (LB) through the first antenna and the second antenna An antenna system, further comprising a baseband processor.
According to claim 1,

The first metal pattern formed under the first dielectric structure is connected to the ground metal pattern of the circuit board,

The first feeding unit is connected to a first signal line (signal line) of the dielectric region inside the ground metal pattern of the circuit board.
According to claim 1,

The second metal pattern formed under the second dielectric structure is connected to the ground metal pattern of the circuit board,

The second feeding unit is connected to a second signal line (signal line) of the dielectric region inside the ground metal pattern of the circuit board.
According to claim 1,

A third antenna configured to be connected to the circuit board through a third feeding unit so as to radiate a third signal through a third slot and a third metal pattern printed on a third dielectric structure disposed at one end of the circuit board ; and

A fourth antenna configured to be connected to the circuit board through a fourth feeder so as to radiate a fourth signal through a fourth slot and a fourth metal pattern printed on a fourth dielectric structure disposed on the other end of the circuit board Further comprising, the antenna system.
7. The method of claim 6,

The third metal pattern formed under the third dielectric structure is connected to the ground metal pattern of the circuit board,

The fourth metal pattern formed under the fourth dielectric structure is connected to the ground metal pattern of the circuit board,

The third power supply unit is connected to a third signal line in the dielectric region inside the ground metal pattern of the circuit board,

and the fourth power supply unit is connected to a fourth signal line of a dielectric region inside the ground metal pattern of the circuit board.
7. The method of claim 6,

operatively coupled to the transceiver circuit and configured to control the transceiver circuit to perform multiple input/output (MIMO) in a second band corresponding to a middle band (MB) via the third antenna and the fourth antenna An antenna system, further comprising a baseband processor.
9. The method of claim 8,

The baseband processor comprises:

Carrier aggregation (CA) is performed through the first signal of the first band received through the first antenna and the third signal of the second band received through the third antenna,

An antenna system for performing carrier aggregation (CA) through a second signal of the first band received through the second antenna and a fourth signal of the second band received through the fourth antenna.
7. The method of claim 6,

A fifth antenna configured to be connected to the circuit board through a fifth feeder so as to radiate a fifth signal through a fifth slot and a fifth metal pattern printed on a fifth dielectric structure disposed at one end of the circuit board ; and

A sixth antenna configured to be connected to the circuit board through a sixth feeder so as to radiate a sixth signal through a sixth metal pattern and a sixth slot printed on a sixth dielectric structure disposed on the other end of the circuit board further comprising,

the fifth antenna is disposed between the first antenna and the third antenna;

and the sixth antenna is disposed between the second antenna and the fourth antenna.
11. The method of claim 10,

The fifth metal pattern formed under the fifth dielectric structure is connected to the ground metal pattern of the circuit board,

The sixth metal pattern formed under the sixth dielectric structure is connected to the ground metal pattern of the circuit board,

The fifth power supply unit is connected to a fifth signal line in the dielectric region inside the ground metal pattern of the circuit board,

and the fourth power supply unit is connected to a sixth signal line in a dielectric region inside the ground metal pattern of the circuit board.
11. The method of claim 10,

operatively coupled to the transceiver circuit and configured to control the transceiver circuitry to perform multiple input/output (MIMO) in a third band corresponding to a high band (MB) via the fifth antenna and the sixth antenna An antenna system, further comprising a baseband processor.
13. The method of claim 12,

The baseband processor comprises:

Carrier aggregation (CA) is performed through the first signal of the first band received through the first antenna and the sixth signal of the third band received through the sixth antenna,

An antenna system for performing carrier aggregation (CA) through a second signal of the first band received through the second antenna and a fifth signal of the third band received through the fifth antenna.
11. The method of claim 10,

The first antenna to the sixth antenna,

and radiating the first signal to the sixth signal outward of the circuit board through the first slot to the sixth slot.
11. The method of claim 10,

The first antenna to the sixth antenna,

The antenna, characterized in that the first metal pattern to the sixth metal pattern are formed on an outer surface of the first dielectric structure to the sixth dielectric structure, but are not formed on an inner surface of the first dielectric structure to the sixth dielectric structure. system.
12. The method of claim 11,

At least one of the first signal line to the sixth signal line corresponding to the first feeding unit to the sixth power feeding unit,

A first signal pad and a second signal pad spaced apart from each other by a predetermined distance,

A first matching device disposed between the first signal pad and the second signal pad, a second matching device disposed between the first signal pad and the ground metal pattern, and between the second signal pad and the ground metal pattern. a third matching element disposed;

At least one of the first feeder to the sixth feeder is connected to the first signal pad.