WO2019198852A1

WO2019198852A1 - Array antenna and mobile terminal

Info

Publication number: WO2019198852A1
Application number: PCT/KR2018/004615
Authority: WO
Inventors: 김동진; 권영배; 유치상
Original assignee: 엘지전자 주식회사
Priority date: 2018-04-09
Filing date: 2018-04-20
Publication date: 2019-10-17

Abstract

An array antenna comprises: a plurality of radiation elements spaced apart from each other; and a power supply part for supplying power to the radiation elements, wherein each of the radiation elements includes: a first radiator shaped like a loop; and a second radiator positioned inside the loop and surrounded by the first radiator, wherein, when power is applied by the power supply part, the first radiator transmits or receives a first signal and the second radiator transmits or receives a second signal having a frequency magnitude greater than that of the first signal. The array antenna enables an antenna operating in a multi-band to be implemented in a small area and thus has an excellent degree of freedom in design and arrangement of an antenna.

Description

Array Antennas and Mobile Terminals

The present invention relates to an array antenna for transmitting and receiving millimeter waves used in fifth generation mobile communication, and a mobile terminal having the same.

Terminals may be divided into mobile / portable terminals and stationary terminals according to their mobility. The mobile terminal may be further classified into a handheld terminal and a vehicle mounted terminal according to whether a user can directly carry it.

The functions of mobile terminals are diversifying. For example, data and voice communication, taking a picture and video with a camera, recording a voice, playing a music file through a speaker system, and outputting an image or video to a display unit. Some terminals have an electronic game play function or a multimedia player function. In particular, recent mobile terminals may receive multicast signals that provide visual content such as broadcasting, video, and television programs.

As the terminal functions are diversified, for example, such a terminal is a multimedia player having a complex function such as taking a picture or a video, playing a music or video file, playing a game, or receiving a broadcast. Is being implemented.

As the functions of the terminal are expanded, various types of wireless communication are applied to transmit and receive data in a wireless manner. As multimedia functions are expanded, technology for watching UHD video quality or using virtual reality (VR) content only through mobile communication has been required.

As a result, LTE communication (Long Term Evolution, 4th generation mobile communication) appeared to transmit a larger amount of data quickly, and LTE communication also advanced to technology that is twice as fast as LTE-A and wide area LTE. In order to increase the transmission speed, two or more frequency bands are used simultaneously or the frequency bandwidth is increased to increase the data transmission amount. In order to increase the frequency band or simultaneously use signals of different frequency bands, the number of antennas is increased.

There is a limit to increasing bandwidth or using signals of a plurality of bands, and the fifth generation of mobile communication technologies is introduced. 5th generation technology is not only advantageous for transmitting large amounts of data. Unlike the existing 4G mobile communication technology, the response speed is fast. As it uses signals of higher frequency band than 4G mobile communication, an antenna of a completely different type is required.

An object of the present invention is to provide a mobile terminal having a multi-band antenna operating in a plurality of frequencies of the mobile terminal having an antenna for transmitting and receiving millimeter waves used in fifth generation mobile communication.

A plurality of radiating elements spaced apart; And a feeding part supplying power to the radiating element, wherein the radiating element comprises: a first radiator having a loop shape; And a second radiator positioned inside the loop and surrounded by a first radiator, wherein when the power is applied from the feeder, the first radiator transmits and receives a first signal, and the second radiator is formed of the first signal. An array antenna for transmitting and receiving a second signal having a frequency greater than a frequency magnitude is provided.

The plurality of radiating elements may be arranged at equal intervals in a first direction, and a plurality of radiating elements may be disposed at equal intervals in a second direction perpendicular to the first direction.

The spacing between the radiating elements may be disposed to be equal to or greater than 1/2 of the wavelength of the first signal or less than the wavelength of the second signal.

The length of the loop of the first radiator may be shorter than the wavelength of the first signal.

The longest length of the second radiator may be shorter than half of the wavelength of the second signal.

The first signal may be a signal having a frequency of 28 GHz and the second signal may be a signal having a frequency of 39 GHz.

The feeder may feed a coupling method without directly contacting the first radiator and the second radiator.

The feeder may be positioned in a plane different from the first radiator and the second radiator.

The first radiator and the second radiator may further include a base formed on one surface.

main body; A display unit mounted on the front of the main body; A power supply unit mounted inside the main body; A plurality of radiating elements positioned on a rear surface of the main body; And a feeding part for supplying power to the radiating element from the power supply, wherein the radiating element comprises: a first radiator having a loop shape; And a second radiator positioned inside the loop and surrounded by a first radiator.

When power is applied from the feeder, the first radiator may transmit and receive a first signal, and the second radiator may transmit and receive a second signal having a frequency greater than that of the first signal.

The interval between the radiating elements may be formed to be equal to or greater than 1/2 of the wavelength of the first signal or less than the wavelength of the second signal.

The first signal may be a signal having a frequency of 28 GHz and the second signal may have a frequency of 39 GHz.

The rear case may further include a rear case forming a rear surface of the main body, and the first radiator and the second radiator may be formed on an inner side surface of the rear case.

Mobile terminal according to the present invention can implement an antenna operating in a multi-band in a small area, there is an advantage that the freedom of antenna design and placement is excellent.

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

1A is a block diagram illustrating a mobile terminal related to the present invention.

1B and 1C are conceptual views of one example of a mobile terminal, viewed from different directions.

2 is a view showing a conventional radiating element.

3 is a view for explaining the characteristics of the first radiator of the array antenna according to the present invention.

4 is a view showing the characteristics of the second radiator of the array antenna according to the present invention.

5 is a view showing the characteristics of the radiating element of the array antenna according to the present invention.

6 is a view illustrating various embodiments of a radiating element of an array antenna according to the present invention.

7 is a view for explaining the arrangement of the array antenna according to the present invention.

8 is a graph illustrating radiation characteristics of a first signal and a second signal of an array antenna according to the present invention.

9 is a view for explaining an angle that can adjust the radiation direction in accordance with the interval between the radiating elements of the array antenna of the present invention.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, and the same or similar components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used in consideration of ease of specification, and do not have distinct meanings or roles from each other. In addition, in describing the embodiments disclosed herein, when it is determined that the detailed description of the related known technology may obscure the gist of the embodiments disclosed herein, the detailed description thereof will be omitted. In addition, the accompanying drawings are intended to facilitate understanding of the embodiments disclosed herein, but are not limited to the technical spirit disclosed herein by the accompanying drawings, all changes included in the spirit and scope of the present invention. It should be understood to include equivalents and substitutes.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The 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 may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, the terms "comprises" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

The mobile terminal described herein includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant, a portable multimedia player, a navigation, a slate PC , Tablet PCs, ultrabooks, wearable devices, such as smartwatches, glass glasses, head mounted displays, and the like. have.

However, it will be readily apparent to those skilled in the art that the configuration according to the embodiments described herein may also be applied to fixed terminals such as digital TVs, desktop computers, digital signages, etc., except when applicable only to mobile terminals. will be.

1A to 1C, FIG. 1A is a block diagram illustrating a mobile terminal according to the present invention, and FIGS. 1B and 1C are conceptual views of one example of the mobile terminal, viewed from different directions.

The mobile terminal 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 controller 180, and a power supply unit 190. ) May be included. The components shown in FIG. 1A are not essential to implementing a mobile terminal, so that the mobile terminal described herein may have more or fewer components than those listed above.

More specifically, the wireless communication unit 110 of the components, between the mobile terminal 100 and the wireless communication system, between the mobile terminal 100 and another mobile terminal 100, or the mobile terminal 100 and the external server It may include one or more modules that enable wireless communication therebetween. In addition, the wireless communication unit 110 may include one or more modules for connecting the mobile terminal 100 to one or more networks.

The wireless communication unit 110 may include at least one of the broadcast receiving module 111, the mobile communication module 112, the wireless internet module 113, the short range communication module 114, and the location information module 115. .

The input unit 120 may include a camera 121 or an image input unit for inputting an image signal, a microphone 122 for inputting an audio signal, an audio input unit, or a user input unit 123 for receiving information from a user. , Touch keys, mechanical keys, and the like. The voice data or the image data collected by the input unit 120 may be analyzed and processed as a control command of the user.

The sensing unit 140 may include one or more sensors for sensing at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, 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. G-sensor, Gyroscope Sensor, Motion Sensor, RGB Sensor, Infrared Sensor, Infrared Sensor, Fingerprint Sensor, Ultrasonic Sensor Optical sensors (e.g. cameras 121), microphones (see 122), battery gauges, environmental sensors (e.g. barometers, hygrometers, thermometers, radiation detection sensors, Thermal sensors, gas sensors, etc.), chemical sensors (eg, electronic noses, healthcare sensors, biometric sensors, etc.). Meanwhile, the mobile terminal disclosed herein may use a combination of information sensed by at least two or more of these sensors.

The output unit 150 is used to generate an output related to sight, hearing, or tactile sense, and includes at least one of a display unit 151, an audio output unit 152, a hap tip module 153, and an optical output unit 154. can do. The display unit 151 forms a layer structure with or is integrally formed with the touch sensor, thereby implementing a touch screen. The touch screen may function as a user input unit 123 that provides an input interface between the mobile terminal 100 and the user, and may also provide an output interface between the mobile terminal 100 and the user.

The interface unit 160 serves as a path to various types of external devices connected to the mobile terminal 100. The interface unit 160 connects a device equipped with a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, and 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 the mobile terminal 100, in response to an external device being connected to the interface unit 160, appropriate control associated with the connected external device may be performed.

In addition, the memory 170 stores data supporting various functions of the mobile terminal 100. The memory 170 may store a plurality of application programs or applications driven in the mobile terminal 100, data for operating the mobile terminal 100, and instructions. At least some of these applications may be downloaded from an external server via wireless communication. In addition, at least some of these application programs may exist on the mobile terminal 100 from the time of shipment for basic functions of the mobile terminal 100 (for example, a call forwarding, a calling function, a message receiving, and a calling function). The application program may be stored in the memory 170 and installed on the mobile terminal 100 to be driven by the controller 180 to perform an operation (or function) of the mobile terminal.

In addition to the operation related to the application program, the controller 180 typically controls the overall operation of the mobile terminal 100. The controller 180 may provide or process information or a function appropriate to a user by processing signals, data, information, and the like, which are input or output through the above-described components, or by driving an application program stored in the memory 170.

In addition, the controller 180 may control at least some of the components described with reference to FIG. 1A in order to drive an application program stored in the memory 170. Furthermore, the controller 180 may operate by combining at least two or more of the components included in the mobile terminal 100 to drive the application program.

The power supply unit 190 receives power from an external power source and an internal power source under the control of the controller 180 to supply power to each component included in the mobile terminal 100. The power supply unit 190 includes a battery, which may be a built-in battery or a replaceable battery.

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

Hereinafter, the components listed above will be described in detail with reference to FIG. 1A before looking at various embodiments implemented through the mobile terminal 100 described above.

First, referring to the wireless communication unit 110, the broadcast receiving module 111 of the wireless communication unit 110 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. Two or more broadcast receiving modules may be provided to the mobile terminal 100 for simultaneous broadcast reception or switching of broadcast channels for at least two broadcast channels.

The mobile communication module 112 may include technical standards or communication schemes (eg, Global System for Mobile communication (GSM), Code Division Multi Access (CDMA), Code Division Multi Access 2000 (CDMA2000), and EV). Enhanced Voice-Data Optimized or Enhanced Voice-Data Only (DO), Wideband CDMA (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE), LTE-A (Long Term Evolution-Advanced) and the like to transmit and receive a radio signal with at least one of a base station, an external terminal, a server on a mobile communication network.

The wireless signal may include various types of data according to transmission and reception of a voice call signal, a video call call signal, or a text / multimedia message.

The wireless internet module 113 refers to a module for wireless internet access and may be embedded or external to the mobile terminal 100. The wireless internet module 113 is configured to transmit and receive wireless signals in a communication network according to wireless internet technologies.

Wireless Internet technologies include, for example, Wireless LAN (WLAN), Wireless-Fidelity (Wi-Fi), Wireless Fidelity (Wi-Fi) Direct, Digital Living Network Alliance (DLNA), Wireless Broadband (WiBro), and WiMAX (World Interoperability for Microwave Access (HSDPA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), and the like. 113) transmits and receives data according to at least one wireless Internet technology in a range including the Internet technologies not listed above.

In view of the fact that the wireless Internet access by WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE, LTE-A, etc. is made through a mobile communication network, the wireless Internet module 113 for performing a wireless Internet access through the mobile communication network 113 ) May be understood as a kind of mobile communication module 112.

The short range communication module 114 is for short range communication, and includes Bluetooth ™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and NFC. (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, Wireless USB (Wireless Universal Serial Bus) by using at least one of the technologies, it is possible to support near field communication. The short-range communication module 114 may be configured between a mobile terminal 100 and a wireless communication system, between the mobile terminal 100 and another mobile terminal 100, or through the wireless area networks. ) And a network in which the other mobile terminal 100 (or an external server) is located. The short range wireless communication network may be short range wireless personal area networks.

Here, the other mobile terminal 100 is a wearable device capable of exchanging (or interworking) data with the mobile terminal 100 according to the present invention (for example, smartwatch, smart glasses). (smart glass), head mounted display (HMD). The short range communication module 114 may sense (or recognize) a wearable device that can communicate with the mobile terminal 100, around the mobile terminal 100. Further, when the detected wearable device is a device that is authenticated to communicate with the mobile terminal 100 according to the present invention, the controller 180 may include at least a portion of data processed by the mobile terminal 100 in the short range communication module ( The transmission may be transmitted to the wearable device through 114. Therefore, the user of the wearable device may use data processed by the mobile terminal 100 through the wearable device. For example, according to this, when a user receives a phone call, the user performs a phone call through the wearable device, or when a message is received by the mobile terminal 100, the user receives the received call through the wearable device. It is possible to check the message.

The location information module 115 is a module for obtaining a location (or current location) of a mobile terminal, and a representative example thereof is a Global Positioning System (GPS) module or a Wireless Fidelity (WiFi) module. For example, when the mobile terminal utilizes the GPS module, the mobile terminal may acquire the location of the mobile terminal using a signal transmitted from a GPS satellite. As another example, when the mobile terminal utilizes the Wi-Fi module, the mobile terminal may acquire the location of the mobile terminal based on information of the wireless access point (AP) transmitting or receiving the Wi-Fi module and the wireless signal. If necessary, the location information module 115 may perform any function of other modules of the wireless communication unit 110 to substitute or additionally obtain data regarding the location of the mobile terminal. The location information module 115 is a module used to obtain the location (or current location) of the mobile terminal, and is not limited to a module that directly calculates or obtains the location of the mobile terminal.

Next, the input unit 120 is for inputting image information (or signal), audio information (or signal), data, or information input from a user. For input of image information, the mobile terminal 100 is one. Alternatively, the plurality of cameras 121 may be provided. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video call mode or the photographing mode. The processed image frame may be displayed on the display unit 151 or stored in the memory 170. On the other hand, the plurality of cameras 121 provided in the mobile terminal 100 may be arranged to form a matrix structure, and through the camera 121 forming a matrix structure in this way, the mobile terminal 100 may have various angles or focuses. The plurality of pieces of image information may be input. In addition, the plurality of cameras 121 may be arranged in a stereo structure to acquire a left image and a right image for implementing a stereoscopic image.

The microphone 122 processes external sound signals into electrical voice data. The processed voice data may be variously used according to a function (or an application program being executed) performed by the mobile terminal 100. Meanwhile, various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in the process of receiving an external sound signal.

The user input unit 123 is for receiving information from a user. When information is input through the user input unit 123, the controller 180 may control an operation of the mobile terminal 100 to correspond to the input information. . The user input unit 123 may be a mechanical input unit (or a mechanical key, for example, a button, a dome switch, a jog wheel, or the like located on the front, rear, or side surfaces of the mobile terminal 100). Jog switch, etc.) and touch input means. As an example, the touch input means may include a virtual key, a soft key, or a visual key displayed on the touch screen through a software process, or a portion other than the touch screen. It may be made of a touch key disposed in the. The virtual key or the visual key may be displayed on the touch screen while having various forms, for example, graphic, text, icon, video, or the like. It can be made of a combination of.

Meanwhile, the sensing unit 140 senses at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information, and generates a sensing signal corresponding thereto. The controller 180 may control driving or operation of the mobile terminal 100 or perform data processing, function or operation related to an application program installed in the mobile terminal 100 based on the sensing signal. Representative sensors among various sensors that may be included in the sensing unit 140 will be described in more detail.

First, the proximity sensor 141 refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or an object present in the vicinity without using a mechanical contact by using an electromagnetic force or infrared rays. The proximity sensor 141 may be disposed in an inner region of the mobile terminal covered by the touch screen described above or near the touch screen.

Examples of the proximity sensor 141 include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. In the case where the touch screen is capacitive, the proximity sensor 141 may be configured to detect the proximity of the object by the change of the electric field according to the proximity of the conductive object. In this case, the touch screen (or touch sensor) itself may be classified as a proximity sensor.

On the other hand, for convenience of explanation, an action of allowing the object to be recognized without being in contact with the touch screen so that the object is located on the touch screen is referred to as a "proximity touch", and the touch The act of actually touching an object on a screen is called a "contact touch." The position at which the object is in close proximity touch on the touch screen means a position where the object is perpendicular to the touch screen when the object is in close proximity touch. The proximity sensor 141 may detect a proximity touch and a proximity touch pattern (for example, a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, and a proximity touch movement state). have. Meanwhile, the controller 180 processes data (or information) corresponding to the proximity touch operation and the proximity touch pattern detected through the proximity sensor 141 as described above, and further, provides visual information corresponding to the processed data. It can be output on the touch screen. Further, the controller 180 may control the mobile terminal 100 to process different operations or data (or information) according to whether the touch on the same point on the touch screen is a proximity touch or a touch touch. .

The touch sensor applies a touch (or touch input) applied to the touch screen (or the display unit 151) using at least one of various touch methods such as a resistive film method, a capacitive method, an infrared method, an ultrasonic method, and a magnetic field method. Detect.

As an example, the touch sensor may be configured to convert a change in pressure applied to a specific portion of the touch screen or capacitance generated at the specific portion into an electrical input signal. The touch sensor may be configured to detect a position, an area, a pressure at the touch, a capacitance at the touch, and the like, when the touch object applying the touch on the touch screen is touched on the touch sensor. Here, the touch object is an object applying a touch to the touch sensor, and may be, for example, a finger, a touch pen or a stylus pen, a pointer, or the like.

As such, when there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and then transmits the corresponding data to the controller 180. As a result, the controller 180 can know which area of the display unit 151 is touched. Here, the touch controller may be a separate component from the controller 180 or may be the controller 180 itself.

Meanwhile, the controller 180 may perform different control or perform the same control according to the type of touch object that touches the touch screen (or a touch key provided in addition to the touch screen). Whether to perform different control or the same control according to the type of touch object may be determined according to the operation state of the mobile terminal 100 or an application program being executed.

Meanwhile, the touch sensor and the proximity sensor described above may be independently or combined, and may be a short (or tap) touch, a long touch, a multi touch, a drag touch on a touch screen. ), Flick touch, pinch-in touch, pinch-out touch, swipe touch, hovering touch, etc. A touch can be sensed.

The ultrasonic sensor may recognize location information of a sensing object using ultrasonic waves. On the other hand, the controller 180 can calculate the position of the wave generation source through the information detected from the optical sensor and the plurality of ultrasonic sensors. The position of the wave source can be calculated using the property that the light is much faster than the ultrasonic wave, that is, the time that the light reaches the optical sensor is much faster than the time when the ultrasonic wave reaches the ultrasonic sensor. More specifically, the position of the wave generation source may be calculated using a time difference from the time when the ultrasonic wave reaches the light as the reference signal.

On the other hand, the camera 121, which has been described as the configuration of the input unit 120, includes at least one of a camera sensor (eg, CCD, CMOS, etc.), a photo sensor (or image sensor), and a laser sensor.

The camera 121 and the laser sensor may be combined with each other to detect a touch of a sensing object with respect to a 3D stereoscopic image. The photo sensor may be stacked on the display element, which is configured to scan the movement of the sensing object in proximity to the touch screen. More specifically, the photo sensor mounts a photo diode and a transistor (TR) in a row / column and scans contents mounted on the photo sensor by using an electrical signal that varies according to the amount of light applied to the photo diode. That is, the photo sensor calculates coordinates of the sensing object according to the amount of light change, and thus, the position information of the sensing object can be obtained.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven in the mobile terminal 100 or user interface (UI) and graphical user interface (GUI) information according to the execution screen information. .

In addition, the display unit 151 may be configured as a stereoscopic display unit for displaying a stereoscopic image.

The stereoscopic display unit may be a three-dimensional display method such as a stereoscopic method (glasses method), an auto stereoscopic method (glasses-free method), a projection method (holographic method).

The sound output unit 152 may output audio data received from the wireless communication unit 110 or stored in the memory 170 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output unit 152 may also output a sound signal related to a function (for example, a call signal reception sound or a message reception sound) performed in the mobile terminal 100. The sound output unit 152 may include a receiver, a speaker, a buzzer, and the like.

The haptic module 153 generates various haptic effects that a user can feel. A representative example of the tactile effect generated by the haptic module 153 may be vibration. The intensity and pattern of vibration generated by the haptic module 153 may be controlled by the user's selection or the setting of the controller. For example, the haptic module 153 may synthesize different vibrations and output or sequentially output them.

In addition to vibration, the haptic module 153 may be used to stimulate pin arrays that vertically move with respect to the contact skin surface, jetting force or suction force of air through the jetting or suction port, grazing to the skin surface, contact of electrodes, and electrostatic force. Various tactile effects can be generated, such as effects by the endothermic and the reproduction of a sense of cold using the elements capable of endotherm or heat generation.

The haptic module 153 may not only deliver a tactile effect through direct contact, but also may allow a user to feel the tactile effect through a muscle sense such as a finger or an arm. Two or more haptic modules 153 may be provided according to configuration aspects of the mobile terminal 100.

The light output unit 154 outputs a signal for notifying occurrence of an event by using light of a light source of the mobile terminal 100. Examples of events occurring in the mobile terminal 100 may be message reception, call signal reception, missed call, alarm, schedule notification, email reception, information reception through an application, and the like.

The signal output from the light output unit 154 is implemented as the mobile terminal emits light of a single color or a plurality of colors to the front or the rear. The signal output may be terminated by the mobile terminal detecting the user's event confirmation.

The interface unit 160 serves as a path to all external devices connected to the mobile terminal 100. The interface unit 160 receives data from an external device, receives power, transfers the power to each component inside the mobile terminal 100, or transmits data inside the mobile terminal 100 to an external device. For example, a port connecting a device equipped with a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, and an identification module. The port, audio input / output (I / O) port, video input / output (I / O) port, earphone port, etc. may be included in the interface unit 160.

On the other hand, the identification module is a chip that stores a variety of information for authenticating the usage rights of the mobile terminal 100, a user identification module (UIM), subscriber identity module (SIM), universal user authentication And a universal subscriber identity module (USIM). A device equipped with an identification module (hereinafter referred to as an 'identification device') may be manufactured in the form of a smart card. Therefore, the identification device may be connected to the terminal 100 through the interface unit 160.

In addition, when the mobile terminal 100 is connected to an external cradle, the interface unit 160 may be a passage for supplying power from the cradle to the mobile terminal 100 or may be input from the cradle by a user. Various command signals may be a passage through which the mobile terminal 100 is transmitted. Various command signals or power input from the cradle may operate as signals for recognizing that the mobile terminal 100 is correctly mounted on the cradle.

The memory 170 may store a program for the operation of the controller 180 and may temporarily store input / output data (for example, a phone book, a message, a still image, a video, etc.). The memory 170 may store data regarding vibration and sound of various patterns output when a touch input on the touch screen is performed.

The memory 170 may include a flash memory type, a hard disk type, a solid state disk type, an SSD type, a silicon disk drive type, and a multimedia card micro type. ), Card-type memory (e.g., SD or XD memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read It may include at least one type of storage medium of -only memory (PROM), programmable read-only memory (PROM), magnetic memory, magnetic disk and optical disk. The mobile terminal 100 may be operated in connection with a web storage that performs a storage function of the memory 170 on the Internet.

On the other hand, as described above, the controller 180 controls the operation related to the application program, and generally the overall operation of the mobile terminal 100. For example, if the state of the mobile terminal satisfies a set condition, the controller 180 may execute or release a lock state that restricts input of a user's control command to applications.

In addition, the controller 180 may perform control and processing related to voice call, data communication, video call, or the like, or may perform pattern recognition processing for recognizing handwriting input or drawing input performed on a touch screen as text and images, respectively. Can be. Furthermore, the controller 180 may control any one or a plurality of components described above in order to implement various embodiments described below on the mobile terminal 100 according to the present invention.

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component. The power supply unit 190 includes a battery, and the battery may be a built-in battery configured to be rechargeable, and may be detachably coupled to the terminal body for charging.

In addition, the power supply unit 190 may be provided with a connection port, the connection port may be configured as an example of the interface 160 is electrically connected to the external charger for supplying power for charging the battery.

As another example, the power supply unit 190 may be configured to charge the battery in a wireless manner without using the connection port. In this case, the power supply unit 190 uses one or more of an inductive coupling based on a magnetic induction phenomenon or a magnetic resonance coupling based on an electromagnetic resonance phenomenon from an external wireless power transmitter. Power can be delivered.

Meanwhile, various embodiments of the present disclosure may be implemented in a recording medium readable by a computer or a similar device using, for example, software, hardware, or a combination thereof.

1B and 1C, the disclosed mobile terminal 100 includes a terminal body in the form of a bar. However, the present invention is not limited thereto, and the present invention can be applied to various structures such as a watch type, a clip type, a glass type, or a folder type, a flip type, a slide type, a swing type, a swivel type, and two or more bodies which are coupled to be movable relative. . Although related to a particular type of mobile terminal, a description of a particular type of mobile terminal may generally apply to other types of mobile terminals.

Herein, the terminal body may be understood as a concept that refers to the mobile terminal 100 as at least one aggregate.

The mobile terminal 100 includes a case (eg, a frame, a housing, a cover, etc.) forming an external appearance. As shown, the mobile terminal 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in the internal space formed by the combination of the front case 101 and the rear case 102. At least one middle case may be additionally disposed between the front case 101 and the rear case 102.

The display unit 151 may be disposed in front of the terminal body to output information. As shown, the window 151a of the display unit 151 may be mounted to the front case 101 to form a front surface of the terminal body together with the front case 101. Recently, as the mobile terminal 100 is miniaturized, the front case may be omitted, and the front surface of the mobile terminal body may be configured using only the window 151a.

The mobile terminal 100 may include a middle frame supporting the rear surface of the display unit 151 for rigidity, and the middle frame may include a metal material for rigidity. In addition to providing rigidity to the mobile terminal, it can serve as the ground 105 in the configuration of a large area including a conductive material, and can be connected to each component for the grounding of an electronic component such as an antenna.

The middle frame may be configured in a form not exposed to the outside, and may be integrally formed with the front case located on the front of the body or the side case located on the side.

As the multimedia functions are expanded, the size of the display unit 151 increases, and the size of the bezel positioned around the display unit 151 becomes smaller. In particular, the upper portion of the camera 121, the sound output unit 152, the proximity sensor 141, etc. need to secure a space for positioning, and the lower portion of the physical button is disposed to limit the size of the display unit 151.

However, recently, by minimizing the size of each component and implementing the user input unit 123 using soft keys instead of physical buttons, the soft keys are outputted only when necessary and disappear when unnecessary, thereby increasing the size of the screen.

In some cases, an electronic component may be mounted on the rear case 102. Electronic components attachable to the rear case 102 include a removable battery, an identification module, a memory card, and the like. In this case, the rear case 102 may be detachably coupled to the rear cover for covering the mounted electronic component. Therefore, when the rear cover 103 is separated from the rear case 102, the electronic components mounted on the rear case 102 are exposed to the outside.

The

cases

101, 102, and 103 may be formed by injecting a synthetic resin, or may be formed of a metal, for example, stainless steel (STS), aluminum (Al), titanium (Ti), or the like.

The mobile terminal 100 may be configured such that one case may provide the internal space, unlike the above example in which a plurality of cases provide an internal space for accommodating various electronic components. In this case, the mobile terminal 100 of the unibody that the synthetic resin or metal from the side to the rear may be implemented.

On the other hand, the mobile terminal 100 may be provided with a waterproof portion (not shown) to prevent water from seeping into the terminal body. For example, the waterproof portion is provided between the window 151a and the front case 101, between the front case 101 and the rear case 102 or between the rear case 102 and the rear cover 103, and a combination thereof. It may include a waterproof member for sealing the inner space.

The mobile terminal 100 includes a display unit 151, first and second

sound output units

152a and 152b, a proximity sensor 141, an illuminance sensor 142, an optical output unit 154, and first and second units. The

cameras

121a and 121b, the first and

second manipulation units

123a and 123b, the microphone 122, the interface unit 160, and the like may be provided.

Hereinafter, as illustrated in FIGS. 1B and 1C, the display unit 151, the first sound output unit 152a, the proximity sensor 141, the illuminance sensor 142, and the light output unit may be disposed on the front surface of the terminal body. 154, the first camera 121a and the first operation unit 123a are disposed, and the second operation unit 123b, the microphone 122, and the interface unit 160 are disposed on the side of the terminal body. The mobile terminal 100 in which the second sound output unit 152b and the second camera 121b are disposed on the rear surface of the mobile terminal 100 will be described as an example.

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as needed or disposed on other sides. For example, the first manipulation unit 123a may not be provided on the front surface of the terminal body, and the second sound output unit 152b may be provided on the side of the terminal body instead of the rear surface of the terminal body.

The display unit 151 may include a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display (flexible display). display, a 3D display, or an e-ink display.

In addition, two or more display units 151 may exist according to an implementation form of the mobile terminal 100. In this case, the plurality of display units may be spaced apart or integrally disposed on one surface of the mobile terminal 100, or may be disposed on different surfaces.

The display unit 151 may include a touch sensor that senses a touch on the display unit 151 so as to receive a control command by a touch method. By using this, when a touch is made to the display unit 151, the touch sensor may sense the touch, and the controller 180 may generate a control command corresponding to the touch based on the touch sensor. The content input by the touch method may be letters or numbers or menu items that can be indicated or designated in various modes.

Meanwhile, the touch sensor is formed of a film having a touch pattern and disposed between the window 151a and the display (not shown) on the rear surface of the window 151a or directly patterned on the rear surface of the window 151a. It can also be Alternatively, the touch sensor may be integrally formed with the display. For example, the touch sensor may be disposed on a substrate of the display or provided in the display.

As such, the display unit 151 may form a touch screen together with the touch sensor. In this case, the touch screen may function as the user input unit 123 (see FIG. 1A). In some cases, the touch screen may replace at least some functions of the first manipulation unit 123a.

The first sound output unit 152a may be implemented as a receiver for transmitting a call sound to the user's ear, and the second sound output unit 152b may be a loud speaker for outputting various alarm sounds or multimedia reproduction sounds. It can be implemented in the form of).

A sound hole for emitting sound generated from the first sound output unit 152a may be formed in the window 151a of the display unit 151. However, the present invention is not limited thereto, and the sound may be configured to be emitted along an assembly gap between the structures (for example, a gap between the window 151a and the front case 101). In this case, an externally formed hole may be invisible or hidden for sound output, thereby simplifying the appearance of the mobile terminal 100.

The light output unit 154 is configured to output light for notifying when an event occurs. Examples of the event may include message reception, call signal reception, missed call, alarm, schedule notification, email reception, information reception through an application, and the like. When the user's event confirmation is detected, the controller 180 may control the light output unit 154 to end the light output.

The first camera 121a processes an image frame of a still image or a moving image obtained by the image sensor in a shooting mode or a video call mode. The processed image frame may be displayed on the display unit 151 and stored in the memory 170.

The first and

second manipulation units

123a and 123b may be collectively referred to as a manipulating portion as an example of the user input unit 123 operated to receive a command for controlling the operation of the mobile terminal 100. have. The first and

second manipulation units

123a and 123b may be adopted in any manner as long as the user is tactile manner such as touch, push, scroll, and the like while the user is tactile. In addition, the first and

second manipulation units

123a and 123b may be employed in such a manner that the first and

second manipulation units

123a and 123b are operated without a tactile feeling by the user through proximity touch, hovering touch, or the like.

In the drawing, the first operation unit 123a is illustrated as being a touch key, but the present invention is not limited thereto. For example, the first manipulation unit 123a may be a mechanical key or a combination of a touch key and a push key.

The contents input by the first and

second manipulation units

123a and 123b may be variously set. For example, the first operation unit 123a receives a command such as a menu, a home key, a cancellation, a search, etc., and the second operation unit 123b is output from the first or second

sound output units

152a and 152b. The user may receive a command such as adjusting the volume of the sound and switching to the touch recognition mode of the display unit 151.

Meanwhile, as another example of the user input unit 123, the rear input unit 123c may be provided on the rear surface of the terminal body. The rear input unit 123c is manipulated to receive a command for controlling the operation of the mobile terminal 100, and the input content may be variously set. For example, commands such as power on / off, start, end, scroll, etc., control of the volume of sound output from the first and second

sound output units

152a and 152b, and the touch recognition mode of the display unit 151. Commands such as switching can be received. The rear input unit 123c may be implemented in a form capable of input by a touch input, a push input, or a combination thereof.

The rear input unit 123c may be disposed to overlap the front display unit 151 in the thickness direction of the terminal body. For example, the rear input unit 123c may be disposed at an upper end portion of the rear of the terminal body so that the user can easily manipulate the index by using the index finger when the user grips the terminal body with one hand. However, the present invention is not necessarily limited thereto, and the position of the rear input unit may be changed.

As such, when the rear input unit 123c is provided at the rear of the terminal body, a new type user interface using the same may be implemented. In addition, when the touch screen or the rear input unit described above replaces at least some functions of the first operation unit 123a provided in the front of the terminal body, the first operation unit 123a is not disposed on the front of the terminal body. The display unit 151 may be configured with a larger screen.

Meanwhile, the mobile terminal 100 may be provided with a fingerprint recognition sensor for recognizing a user's fingerprint, and the controller 180 may use fingerprint information detected through the fingerprint recognition sensor as an authentication means. The fingerprint recognition sensor may be embedded in the display unit 151 or the user input unit 123.

The microphone 122 is configured to receive a user's voice, other sounds, and the like. The microphone 122 may be provided at a plurality of locations and configured to receive stereo sound.

The interface unit 160 serves as a path for connecting the mobile terminal 100 to an external device. For example, the interface unit 160 may be connected to another device (eg, an earphone or an external speaker), a port for short-range communication (for example, an infrared port (IrDA Port), or a Bluetooth port (Bluetooth). Port), a wireless LAN port, or the like, or a power supply terminal for supplying power to the mobile terminal 100. The interface unit 160 may be implemented in the form of a socket for receiving an external card such as a subscriber identification module (SIM) or a user identity module (UIM), a memory card for storing information.

The second camera 121b may be disposed on the rear surface of the terminal body. In this case, the second camera 121b has a photographing direction substantially opposite to that of the first camera 121a.

The second camera 121b may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix format. Such a camera may be referred to as an 'array camera'. When the second camera 121b is configured as an array camera, images may be photographed in various ways using a plurality of lenses, and images of better quality may be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. The flash 124 shines light toward the subject when the subject is photographed by the second camera 121b.

The second sound output unit 152b may be additionally disposed on the terminal body. The second sound output unit 152b may implement a stereo function together with the first sound output unit 152a and may be used to implement a speakerphone mode during a call.

The terminal body may be provided with at least one antenna for wireless communication. The antenna may be built in the terminal body or formed in the case. For example, an antenna that forms part of the broadcast receiving module 111 (refer to FIG. 1A) may be configured to be pulled out from the terminal body. Alternatively, the antenna may be formed in a film type and attached to the inner side of the rear cover 103, or may be configured such that a case including a conductive material functions as an antenna.

The terminal body is provided with a power supply unit 190 (see FIG. 1A) for supplying power to the mobile terminal 100. The power supply unit 190 may include a battery 191 embedded in the terminal body or detachably configured from the outside of the terminal body.

The battery 191 may be configured to receive power through a power cable connected to the interface unit 160. In addition, the battery 191 may be configured to enable wireless charging through a wireless charger. The wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

An accessory may be added to the mobile terminal 100 to protect the appearance or to assist or expand the function of the mobile terminal 100. An example of such an accessory may be a cover or pouch that covers or accommodates at least one surface of the mobile terminal 100. The cover or pouch may be configured to be linked with the display unit 151 to expand the function of the mobile terminal 100. Another example of the accessory may be a touch pen for assisting or extending a touch input to a touch screen.

Hereinafter, embodiments related to a control method that can be implemented in the mobile terminal 100 configured as described above will be described with reference to the accompanying drawings. It is apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention.

As the multimedia functions become more important, the wireless communication technology performed by the mobile terminal 100 is performed in various forms such as short distance, long distance, or between devices. Since different frequency bands (resonant frequencies) are used, different antenna radiators are used. Should be.

In order to support the transmission and reception of large-capacity data, a fifth-generation mobile communication technology capable of transmitting and receiving large-capacity data rapidly is being developed, in addition to LTE, a fourth-generation mobile communication technology, using a very high-frequency millimeter wave. Fifth generation mobile communication technology uses ultra-high frequency signals. Ultra-high frequency signals can be referred to as millimeter wave (mmWave) because the length of the wavelength can be mm length.

As the antenna used in the conventional mobile communication, an antenna having a radiation pattern in which electromagnetic waves are radiated while being directionally spread like a dipole antenna or a monopole antenna is used. However, in this case, since a lot of energy is consumed in signal transmission, the gain is lowered. Thus, the transmitter can perform mobile communication with less energy by using a beam pattern radiation method that emits toward the receiver.

The beam pattern of each antenna may be combined using a plurality of radiation elements to implement a sharp beam pattern. An array antenna using a plurality of radiating elements may make a beam pattern sharper and transmit a signal farther in a specific direction. The radiation direction can be adjusted by adjusting the power supplied to the plurality of radiating elements.

5G mobile communication uses ultra-high frequency signals because it requires innovative capacity expansion (1000 times compared to LTE). Since the size and arrangement of the antenna radiator are dependent on the wavelength length of the signal to be transmitted and received, the size of the antenna radiator can be reduced by using an ultra-high frequency signal. The frequency signal band used in 5G is 28 GHz or more, and the length of the wavelength becomes very small considering that the high frequency band used in LTE communication is 2.5 GHz.

By using signals in the ultra high frequency band, interference with other signals can be reduced, thereby widening the frequency band, thereby improving antenna performance. In addition, the size of the antenna radiator for the signal of the ultra-high frequency band can be reduced, and if the array antenna is implemented by placing several small radiating elements on a substrate made of an insulating material, the antenna performance can be increased by more than 10 times by forming a beam pattern. Omni-directional transmission causes waste of energy. Using radiant antennas with array antennas can reduce energy waste. 5G mobile communication technology transmits and receives signals in an ultra high frequency band through an array antenna.

2 (a) is a view for explaining the characteristics of the array antenna 200 related to the present invention, in the form of an array antenna 200 in which a plurality of radiating elements are arranged. The array antenna 200 may adjust the radiation direction within a predetermined angle range based on the direction perpendicular to the plane where each radiating element is disposed. If the intensity of the power supplied to each of the radiating elements is adjusted, the radiation performance of the radiating element having a larger power is improved, and thus the direction of the beam radiated from the array antenna 200 may be changed.

The display unit 151 positioned in front of the mobile terminal includes a conductive material, and the middle frame that supports the display unit 151 and serves as a ground of the mobile terminal 100 also includes a metal material. The back direction of the 100 may be the main radial direction of the array antenna 200. Therefore, it can be arranged in the form of a patch antenna on the inner surface of the rear case.

Figure 2 (b) is a view showing a conventional radiating element. Two array antennas 200 may be arranged to provide an array antenna 200 for transmitting and receiving signals of two or more frequencies. In this case, there is a problem that the mounting area of the antenna is increased, it is difficult to utilize the internal space of the mobile terminal. In order to solve the above problems, an object of the present invention is to provide an array antenna 200 including a radiating element that can implement a multi-band.

3 is a view for explaining the characteristics of the first radiator 210 of the array antenna 200 according to the present invention, Figure 4 is a characteristic of the second radiator 220 of the array antenna 200 according to the present invention. 5 is a view for explaining the characteristics of the radiating elements (200a, 200b, 200c, 200d) of the array antenna 200 according to the present invention.

As shown in FIGS. 5A and 5B, the radiating

elements

200a, 200b, 200c, and 200d of the present invention may include a first radiator 210 and a second radiator 220. The first radiator 210 is a loop antenna having an empty loop shape in the center thereof, and the second radiator 220 is a patch antenna filled inside. Both the first radiator 210 and the second radiator 220 may be formed by attaching or printing a conductive material on a dielectric such as a substrate or a rear case, and may be implemented in the form of a patch antenna having a relatively thin thickness.

The first radiator 210 is an antenna for transmitting and receiving the first signal, and the length of the circumference formed by the loop corresponds to the wavelength of the resonance frequency. The patch antenna filled inside, such as the second radiator 220, has the longest diagonal length corresponding to the half-wave length of the resonant frequency. Can transmit and receive signals of frequency. That is, when the antenna is formed in the form of a loop antenna, the size of the radiating

elements

200a, 200b, 200c, and 200d can be reduced, and the array antenna 200 can be miniaturized.

Since the length of the loop of the rectangular loop antenna shown in FIG. 3B is four times the length w1 of one side of the first radiator 210, the length of the loop becomes (w1) x4, so the wavelength of the resonance frequency is (w1). ) x4. For example, the circumference of the loop antenna having one side length of 3 mm may be about 12 mm, which is four times 3 mm.

3 (c) is a diagram illustrating a scattering coefficient (S-parameter) of the first radiator 210. The scattering coefficient represents a relationship between an input and an output. The lower the value, the better the radiation performance. The branch frequency is called a resonant frequency and can efficiently transmit and receive a signal having a frequency corresponding to the resonant frequency. As shown in FIG. 3C, the resonant frequency of the loop antenna may be 25 GHz having a wavelength length of 12 mm.

When the shape of the first radiator 210 that is the loop antenna is square, there is an advantage in that frequency tuning is easy and the inside of the mobile terminal is easy. However, the shape of the first radiator 210 is not limited to the square, and various shapes such as an oval or a rectangle are possible.

The power supply unit 250 that supplies power to the first radiator 210 may be disposed at any position on the first radiator 210. When the first radiator 210 is disposed adjacent to the rear case or the rear surface of the mobile terminal, the power supply unit 250 connected to the main substrate located inside the mobile terminal is the first radiator as shown in FIG. It may extend from a plane different from 210 to a plane such as the first radiator 210.

Power may be directly connected to the first radiator 210 to supply power, but may be spaced apart to supply power in a coupling manner. In the case of using the coupling method, the efficiency is improved as the feed area 250 and the first radiator 210 have an adjacent area as much as possible. As shown in FIG. 3B, the first radiator 210 is connected to the first radiator 210. A recess formed in a shape surrounding the feed part 250 may be formed to increase an area adjacent to the feed part 250.

As shown in (a) and (b) of FIG. 4, the second radiator 220 is a solid patch antenna having no hole formed in the center, unlike the first radiator 210. The resonance frequency of the patch antenna is a patch antenna. Is related to the maximum length of w2. As in the present embodiment, the diagonal length w3 of the rectangular patch antenna becomes the longest length and may be resonated at a frequency having a wavelength length corresponding to twice the diagonal length w3.

The length w2 of one side of the second radiator 220 may be about 2.6 mm, and the diagonal length w3 may be about 3.7 mm. However, in the case of the patch antenna, the patch antenna has a longer length due to the fringing effect occurring at the end. The fringing effect refers to a characteristic in which an electric field is curved at an end and is related to the thickness of a dielectric such as a substrate or a case where a patch antenna is formed. Therefore, resonance may occur at a frequency having a wavelength length longer than twice the actual diagonal length w3 (for example, 8 mm). As shown in (c) of FIG. 4 showing the scattering coefficient S-parameter of the second radiator 220, resonance may occur near 36 GHz.

5 is a view showing the characteristics of the radiating elements (200a, 200b, 200c, 200d) of the array antenna 200 according to the present invention. The second radiator 220 may be disposed in an empty space inside the first radiator 210. The second radiator 220 may be formed to be smaller than the first radiator 210 so that the first radiator 210 and the second radiator 220 do not overlap each other, and the feed part 250 of the first radiator 210 may be formed. The feeder 250 of the second radiator 220 may use one feeder 250 in common.

As such, when power is supplied to two patches through one feeder 250, the radiating

elements

200a, 200b, 200c, and 200d having both the characteristics of the first radiator 210 and the characteristics of the second radiator 220 may be provided. Can be obtained. That is, as shown in (c) of FIG. 5, it may have radiating

elements

200a, 200b, 200c, and 200d having two resonances. The resonance in the low frequency band is the resonance frequency by the first radiator 210, and the resonance in the high frequency band is the resonance frequency by the second radiator 220. However, when the first radiator 210 and the second radiator 220 are disposed adjacent to each other to form one

radiating element

200a, 200b, 200c, or 200d (refer to FIG. 5C). When the first and second radiators 220 of FIGS. 3 and 4 exist independently (see FIGS. 3C and 4C), a difference from the resonant frequency appears.

When the second radiator 220 is inserted inside the first radiator 210, the first radiator 210 and the second radiator 220 may have a mutual influence even if they are spaced apart from each other. Therefore, the first radiator 210 has an effect that is filled in the interior, the resonance frequency of the first radiator 210 in the state arranged as shown in Figure 5 (b) is shown in the graph of Figure 3 (c) Is bigger than If the resonant frequency when the first radiator 210 is independently present is 25 GHz, the resonant frequency may be shifted to 28 GHz when disposed with the second radiator 220.

In addition, in the case of the second radiator 220, the first radiator 210 positioned outside the second radiator 220 may prevent the fringing effect from appearing around the second radiator 220. Therefore, resonance may occur in a frequency band higher than the resonance frequency shown in FIG. 4C, and thus may be resonated at 39 GHz as shown in FIG. 5C.

The numerical values of the sizes of the first radiator 210 and the second radiator 220 are little by little depending on the frequency of the signal to be transmitted and received, the components of the first radiator 210 and the second radiator 220, and the influence of peripheral components. Can vary. In order to obtain a desired resonance frequency, shapes of the first radiator 210 and the second radiator 220 may be variously formed as shown in FIG. 6.

As shown in (a) of FIG. 6, the power feeding unit 250 may be disposed at one side of the corner. In this case, there is an effect that the area where the power supply unit 250 is coupled to the first radiator 210 and the second patch is widened. As shown in FIG. 6B, the thickness of the first radiator 210 may be changed and the shape of the second radiator 220 may be modified. In addition, at least one of the power supply unit 250 and the first radiator 210 or the second radiator 220 may be supplied by direct contact rather than by a coupling method.

As shown in FIG. 6C, when a part of the second radiator 220 is incised or a hole is formed, a passage path of the current flowing through the second radiator 220 is long, thereby increasing the resonance frequency. As illustrated in (d) of FIG. 6, the feeding part 250 may be positioned on a plane different from that of the first radiator 210 and the second radiator 220 to feed the coupling. It is possible to secure a larger coupling area than to feed in the same plane.

7 is a view for explaining the arrangement of the array antenna 200 according to the present invention. The array antenna 200 may arrange a plurality of radiating

elements

200a, 200b, 200c, and 200d to adjust a radiation direction by adjusting voltages of the radiating

elements

200a, 200b, 200c, and 200d. Since the array antenna 200 is disposed on a plane corresponding to the x-y axis, radiation performance in the direction in which the array antenna 200 faces is excellent. 8 is a graph showing the radiation performance in a situation where the array antenna 200 is placed on the bottom surface of the mobile terminal facing upward when located in the rear case direction of the mobile terminal. FIG. 8A shows the radiation performance of the signal of 28 GHz and FIG. 8B shows the radiation performance of the signal of 39 GHz. In the graph, when the horizontal plane is the bottom plane, a larger radiation pattern appears in the rear direction of the mobile terminal, and the radiation pattern is weak in the front direction.

The array antenna 200 of the present invention is a total of four radiating elements (200a, 200b, 200c, 200d) in a 2x2 array in a 2x2 array 2

radiator

200a, 200b, 200c, 200d as shown in FIG. ), The main radiation direction can be adjusted so that the antenna reception rate can be increased by changing the main radiation direction when the antenna performance is degraded.

If the distance between the radiating elements (200a, 200b, 200c, 200d) is too large, it is necessary to be spaced apart by a predetermined interval because the radial direction can not be adjusted. 9 is a view for explaining an angle that can adjust the radiation direction in accordance with the interval between the radiating elements of the array antenna 200 of the present invention. If the spacing of the radiating elements is equal to the wavelength of the resonant frequency (

) You cannot change the direction of the beam pattern (θ _max) = 0). Half the wavelength of the radiating element and the wavelength of the resonant frequency (

) The direction of the beam pattern can be changed up to 90 ° (θ _max = 90 °).

That is, the interval between the radiating

elements

200a, 200b, 200c, and 200d may be determined between 0.5 times and 1 times or less of the wavelength of the signal to be transmitted and received, and in order to maximize the direction adjustment range of the beam pattern, It is preferable to set it as 0.5 times (0.5 (lambda)) of a wavelength. However, since the exact length is adjusted according to the dielectric constant of the substrate, the dielectric constant of the substrate is larger than the vacuum, so the interval between the actual radiating elements is 0.5λ or less.

Since the half-wave length of 28 GHz is about 5.4 mm and the half-wave length of 39 GHz is about 3.85 mm, when the spacing of the radiating elements is determined based on the wavelength of the 28 GHz signal, the radiating elements should be placed at an interval of 5.3 mm. When the spacing of radiating elements is determined based on the wavelength of the signal, the radiating elements should be arranged at 3.85mm intervals.

Mobile terminal according to the present invention can implement the array antenna 200 operating in a multi-band in a small area, there is an advantage that the freedom of antenna design and placement is excellent.

The above detailed description should not be construed as limiting in all respects but should be considered as illustrative. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

Claims

A plurality of radiating elements spaced apart; And

It includes a feeder for supplying power to the radiating element,

The radiating element,

A first radiator in the form of a loop; And

A second radiator positioned inside the loop and surrounded by a first radiator,

The first radiator transmits and receives a first signal when power is applied from the feeder, and the second radiator transmits and receives a second signal having a frequency greater than the frequency of the first signal.
The method of claim 1,

The plurality of radiating elements are arranged at equal intervals in a first direction, a plurality of radiating elements are arranged at equal intervals in a second direction perpendicular to the first direction.
The method of claim 2,

The interval between the radiating elements is an array antenna, characterized in that more than 1/2 of the wavelength length of the first signal or less than the wavelength length of the second signal.
The method of claim 1,

And the loop length of the first radiator is shorter than the wavelength of the first signal.
The method of claim 1,

And the longest length of the second radiator is shorter than half of the wavelength of the second signal.
The method of claim 1,

And the first signal is a signal having a frequency of 28 GHz and the second signal is a signal having a frequency of 39 GHz.
The method of claim 1,

And the feeder feeds in a coupling manner without directly contacting the first radiator and the second radiator.
The method of claim 1,

And the feeding part is positioned in a plane different from the first radiator and the second radiator.
The method of claim 1,

And a base portion formed on one surface of the first radiator and the second radiator.
main body;

A display unit mounted on the front of the main body;

A power supply unit mounted inside the main body;

A plurality of radiating elements positioned on a rear surface of the main body; And

It includes a feeder for supplying power to the radiating element from the power supply,

The radiating element,

A first radiator in the form of a loop; And

And a second radiator positioned inside the loop and surrounded by a first radiator.
The method of claim 10,

When power is applied from the feeder, the first radiator transmits and receives a first signal, and the second radiator transmits and receives a second signal having a frequency greater than a frequency magnitude of the first signal.
The method of claim 11,

The plurality of radiating elements are arranged at equal intervals in a first direction, a plurality of radiating elements are arranged at equal intervals in a second direction perpendicular to the first direction.
The method of claim 12,

The interval between the radiating elements is a mobile terminal, characterized in that more than 1/2 of the wavelength length of the first signal or less than the wavelength length of the second signal.
The method of claim 11,

The length of the loop of the first radiator is shorter than the wavelength of the first signal.
The method of claim 11,

And the longest length of the second radiator is shorter than half of the wavelength of the second signal.
The method of claim 11,

And the first signal is a signal having a frequency of 28 GHz and the second signal is a signal having a frequency of 39 GHz.
The method of claim 10,

The power supply unit is a mobile terminal, characterized in that for feeding in a coupling manner without directly contacting the first radiator and the second radiator.
The method of claim 10,

The feeder is characterized in that the mobile terminal is located in a plane different from the first radiator and the second radiator.
The method of claim 10,

Further comprising a rear case forming the back of the main body,

And the first radiator and the second radiator are formed on an inner side surface of the rear case.