KR20140036935A - Antenna module and mobile terminal having the same - Google Patents

Abstract

An antenna module according to an embodiment of the present invention comprises: a first member and a second member arranged close to each other and formed to resonate at respective regular frequencies; and a first arm member and a second arm member arranged between the first member and the second member to isolate one of the first and second members electrically while the other is operating, and that are capacitively coupled to any one of the first and second members respectively. [Reference numerals] (110) Wireless communication unit; (111) Broadcast receiving module; (112) Mobile communication module; (113) Wireless internet module; (114) Local area communication module; (115) Location information module; (120) A/V input unit; (121) Camera; (122) Microphone; (130) User input unit; (140) Sensing unit; (141) Proximity sensor; (150) Output unit; (151) Display unit; (152) Sound output module; (153) Alarming unit; (154) Haptic module; (160) Memory; (170) Interface unit; (180) Control unit; (181) Multimedia module; (190) Power supply unit

Description

ANTENNA MODULE AND MOBILE TERMINAL HAVING THE SAME

Embodiments of the present invention relate to a mobile terminal having an antenna module for transmitting and receiving wireless signals.

A mobile terminal is a portable electronic device that is portable and has one or more functions of voice and video call function, information input / output function, and data storing function.

As the functions of the mobile terminal are diversified, the mobile terminal is implemented in the form of a multimedia device having complicated functions such as photographing and photographing of a moving picture, reproduction of a music or video file, and reception of a game and a broadcast.

Various new attempts have been made in terms of hardware or software to implement the complex functions of multimedia devices. For example, a user interface environment is provided for a user to easily and conveniently search for or select a function.

In addition to the above attempts, it may be considered to further improve the functions of the hardware and the like. These improvements include structural changes and improvements for the user to use the mobile terminal more conveniently. It can be considered for an antenna that transmits and receives radio waves in one of the above structural changes and improvements.

An antenna is a device that is formed to transmit and receive wireless electromagnetic waves for wireless communication, and is an essential component required for a mobile terminal. Since the mobile terminal tends to implement various functions such as a WiBro and a DMB in addition to a voice call, the antenna must be designed to be small enough to be embedded in a mobile terminal as well as to implement bandwidths satisfying the functions.

In accordance with the above requirements, antennas capable of implementing multi-frequency bands are being designed. However, there is a problem in that the structure of the antenna is complex, and it is difficult to independently adjust parameter values that determine characteristics such as resonance frequency, bandwidth, gain, and the like.

In addition, there is a problem that the performance of the antenna is degraded due to interaction in the antenna module that provides MIMO or diversity.

Therefore, in order to solve these problems, an antenna having a new structure can be considered.

One object of the present invention is to provide a mobile terminal having an improved antenna module.

Another object of the present invention is to provide an antenna module having a more improved structure and capable of more efficiently performing a mobile communication service such as MIMO or diversity.

In order to achieve the above object of the present invention, the antenna module according to an embodiment of the present invention, the first member and the second member, which is disposed in close proximity to each other, and formed to resonate at a predetermined frequency, any one of the When the member is in operation, it includes a first arm member and a second arm member disposed between the members to electrically isolate other members, each capacitively coupled to the one member.

According to an example related to the present disclosure, the antenna module may further include a ground to which the arm members are grounded.

According to an example related to the present disclosure, the ground may be formed on a circuit board, and a first feed part fed to the first member and a second feed part connected to the second member may be formed on the circuit board. have.

According to an example related to the present invention, each member and the arm member to be capacitively coupled may be formed in parallel to be spaced apart from each other.

According to an example related to the present invention, the spacing between each member capacitively coupled and the arm member may be 0.2 mm to 1 mm.

According to an example related to the present invention, the members may be formed to have a length of about λ / 4 corresponding to a predetermined frequency.

According to an example related to the present invention, the members and the arm members may each be formed in a loop structure that is open at the capacitively coupled portion.

According to an example related to the present disclosure, the antenna module may further include a connection member electrically connecting the arm members.

According to an example related to the present disclosure, the arm members may have a first coupling portion and a second coupling portion formed in parallel with each other and connected to one side thereof, and the first coupling portion may be capacitively coupled to the member. .

According to an example related to the present invention, the second coupling portion may be capacitively coupled to a second coupling portion of another adjacent arm member.

According to an example related to the present invention, the distance between the second coupling parts which are formed to face each other in parallel may be formed within 5 mm.

In order to achieve the above object, another embodiment of the present invention includes a terminal module and an antenna module embedded in the body and configured to operate at a first frequency and a second frequency, wherein the antenna module includes: A first member formed with an electrical length corresponding to one frequency, a second member formed with an electrical length corresponding to the second frequency, and the second member operating as ground when the first member operates; Disclosed is a mobile terminal including a first arm member and a second arm member for ground connection of a first member to the second member.

According to an example related to the present invention, the mobile terminal may further include a ground to which the arm members are grounded.

According to an example related to the present invention, the ground is formed on a circuit board embedded in the body, and a first feed part connected to a power supply connected to the first member on the circuit board and a second power supply connected to the second member. Feeding unit may be formed.

According to an example related to the present invention, the first member and the first arm member may be capacitively coupled to each other, and the second member and the second arm member may be capacitively coupled to each other.

According to an example related to the present invention, the first arm member and the second arm member may be capacitively coupled to each other.

According to an example related to the present invention, each member and the arm member to be capacitively coupled may be formed in parallel to be spaced apart from each other.

According to an example related to the present disclosure, the mobile terminal may further include a connection member for electrically connecting the arm members.

According to an example related to the present disclosure, the arm members may have a first coupling portion and a second coupling portion formed in parallel with each other and connected to one side thereof, and the first coupling portions may be capacitively coupled to the member, respectively. Can be.

According to an example related to the present invention, the second coupling parts may be formed in parallel with each other, and the distance between the second coupling parts may be formed within 5 mm.

The mobile terminal according to at least one embodiment of the present invention configured as described above can realize a more efficient antenna in a small space and can maintain the performance of the antenna, thereby making the mobile terminal more compact.

In addition, it is possible to reduce the mutual interference between the antenna device by electrically separating the first member and the second member to improve the separation.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention;
2 is a front perspective view of a mobile terminal according to an embodiment of the present invention;
3 is a rear perspective view of the mobile terminal of FIG. 2;
FIG. 4 is an exploded perspective view of FIG. 3; FIG.
5 is a perspective view of an antenna module according to a comparative example.
6 is a diagram illustrating a reflection coefficient according to frequency in the antenna module shown in FIG. 5.
7 is a perspective view of an antenna module according to an embodiment of the present invention.
8 is a conceptual diagram of the antenna module shown in FIG.
FIG. 9A is a conceptual diagram illustrating a main flow of currents flowing along surfaces of the first and second members when the phases are respectively 0 degrees and 90 degrees in the conceptual diagram shown in FIG. 8, and FIG. 9B is a conceptual diagram shown in FIG. 8. A conceptual diagram showing the main flow of currents flowing along the surfaces of the first and second members when the phases are 180 degrees and 270 degrees, respectively.
FIG. 10 is a diagram illustrating a reflection coefficient according to frequency in the antenna module shown in FIG. 7. FIG.
11 is a perspective view of an antenna module according to another embodiment of the present invention.

Hereinafter, an antenna module and a mobile terminal having the same according to the present invention will be described in more detail with reference to the accompanying drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the present specification, the same or similar reference numerals are given to different embodiments in the same or similar configurations. As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

The mobile terminal described in this specification may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), and navigation. However, it will be understood by those skilled in the art that the configuration according to the embodiments described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, and the like, unless the configuration is applicable only to a mobile terminal.

The mobile terminal 100 includes a wireless communication unit 110, an audio / video input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, A controller 170, a controller 180, a power supply 190, and the like. The components shown in FIG. 1 are not essential, and a mobile terminal having more or fewer components may be implemented. Hereinafter, the components will be described in order.

The wireless communication unit 110 may include one or more modules for enabling wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and the network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short range communication module 114, and a location information module 115 .

The broadcast receiving module 111 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. The broadcast management server may refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

The broadcast-related information may refer to a broadcast channel, a broadcast program, or information related to a broadcast service provider. The broadcast-related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcast-related information may exist in various forms. For example, an EPG (Electronic Program Guide) of DMB (Digital Multimedia Broadcasting) or an ESG (Electronic Service Guide) of Digital Video Broadcast-Handheld (DVB-H).

For example, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only Broadcast-Handheld (ISDB-T), Integrated Services Digital Broadcast-Terrestrial (ISDB-T), and the like. Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems as well as the digital broadcasting system described above.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 112 transmits and receives radio signals to at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless Internet module 113 is a module for wireless Internet access, and may be built in or externally attached to the mobile terminal 100. WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) and the like can be used as wireless Internet technologies.

The short-range communication module 114 refers to a module for short-range communication. Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, and the like can be used as a short range communication technology.

The position information module 115 is a module for obtaining the position of the mobile terminal, and a representative example thereof is a Global Position System (GPS) module.

Referring to FIG. 1, an A / V (Audio / Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame can be displayed on the base portion 265 (151).

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ Two or more cameras 121 may be provided depending on the use environment.

The microphone 122 receives an external sound signal through a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 112 when the voice data is in the call mode, and output. Various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in receiving an external sound signal.

The user input unit 130 generates input data for a user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like.

The sensing unit 140 senses the current state of the mobile terminal 100 such as the open / close state of the mobile terminal 100, the position of the mobile terminal 100, the presence or absence of user contact, the orientation of the mobile terminal, And generates a sensing signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to the external device may be sensed. Meanwhile, the sensing unit 140 may include a proximity sensor 141.

The output unit 150 is for generating output related to the visual, auditory or tactile sense and includes a display unit 151, an audio output module 152, an alarm unit 153, and a haptic module 154 .

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile terminal is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the mobile terminal 100 is in the video communication mode or the photographing mode, the photographed and / or received video or UI and GUI are displayed.

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

Some of these displays may be transparent or light transmissive so that they can be seen through. This can be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparent OLED) and the like. The rear structure of the display unit 151 may also be of a light transmission type. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

There may be two or more display units 151 according to the embodiment of the mobile terminal 100. For example, in the mobile terminal 100, a plurality of display portions may be spaced apart from one another or may be disposed integrally with each other, or may be disposed on different surfaces.

(Hereinafter, referred to as a 'touch screen') in which a display unit 151 and a sensor for sensing a touch operation (hereinafter, referred to as 'touch sensor') form a mutual layer structure, It can also be used as an input device. The touch sensor may have the form of, for example, a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in a pressure applied to a specific portion of the display unit 151 or a capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure at the time of touch.

If 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 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.

Referring to FIG. 1, a proximity sensor 141 may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen, which is surrounded by the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or a nearby object without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor has a longer life span than the contact sensor and its utilization is also high.

Examples of the proximity sensor 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. And to detect the proximity of the pointer by the change of the electric field along the proximity of the pointer when the touch screen is electrostatic. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of explanation, the act of allowing the pointer to be recognized without being in contact with the touch screen so that the pointer is located on the touch screen is referred to as a "proximity touch", and the touch The act of actually touching the pointer on the screen is called "contact touch." The position where the pointer is proximately touched on the touch screen means a position where the pointer is vertically corresponding to the touch screen when the pointer is touched.

The proximity sensor detects a proximity touch and a proximity touch pattern (e.g., a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, a proximity touch movement state, and the like). Information corresponding to the detected proximity touch operation and the proximity touch pattern may be output on the touch screen.

The sound output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory 160 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 module 152 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The audio output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying the occurrence of an event of the mobile terminal 100. Examples of events that occur in the mobile terminal include call signal reception, message reception, key signal input, touch input, and the like. The alarm unit 153 may output a signal for notifying the occurrence of an event in a form other than the video signal or the audio signal, for example, vibration. The video signal or the audio signal may be output through the display unit 151 or the audio output module 152 so that they may be classified as a part of the alarm unit 153.

The haptic module 154 generates various tactile effects that the user can feel. Vibration is a representative example of the haptic effect generated by the haptic module 154. The intensity and pattern of the vibration generated by the hit module 154 can be controlled. For example, different vibrations may be synthesized and output or sequentially output.

In addition to the vibration, the haptic module 154 may be used for stimulation such as a pin array vertically moving with respect to the contact skin surface, a jetting force or suction force of air through an injection or inlet, grazing to the skin surface, contact of an electrode, 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 154 can be implemented not only to transmit the tactile effect through the direct contact but also to allow the user to feel the tactile effect through the muscular sensation of the finger or arm. The haptic module 154 may include two or more haptic modules 154 according to the configuration of the portable terminal 100.

The memory 160 may store a program for the operation of the controller 180 and temporarily store input / output data (e.g., a phone book, a message, a still image, a moving picture, etc.). The memory 160 may store data on vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), a RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM A disk, and / or an optical disk. The mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory 160 on the Internet.

The interface unit 170 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device or supplies power to each component in the mobile terminal 100 or transmits data to the external device. For example, a port for connecting a device with a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, an identification module, an audio I / A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 170.

The identification module is a chip for storing various information for authenticating the use right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM), a general user authentication module A Universal Subscriber Identity Module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the port.

When the mobile terminal 100 is connected to an external cradle, the interface unit 170 may be a path through which power from the cradle is supplied to the mobile terminal 100, or various commands A signal may be a path through which the signal is transmitted to the mobile terminal. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal is correctly mounted on the cradle.

The controller 180 typically controls the overall operation of the mobile terminal. For example, voice communication, data communication, video communication, and the like. The control unit 180 may include a multimedia module 181 for multimedia playback. The multimedia module 181 may be implemented in the control unit 180 or may be implemented separately from the control unit 180. [

The controller 180 may perform a pattern recognition process for recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components.

The various embodiments described herein may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

According to a hardware implementation, the embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and the like. It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions. The described embodiments may be implemented by the controller 180 itself.

According to the software implementation, embodiments such as the procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more of the functions and operations described herein. Software code can be implemented in a software application written in a suitable programming language. The software code is stored in the memory 160 and can be executed by the control unit 180. [

FIG. 2 is a perspective view of a mobile terminal according to an embodiment of the present invention, and FIG. 3 is a rear perspective view of the mobile terminal shown in FIG. 2. Referring to FIG.

Referring to FIGS. 2 and 3, the mobile terminal 200 includes a bar-shaped terminal body 204. However, the present invention is not limited thereto, and can be applied to various structures such as a slide type, a folder type, and a swing type in which two or more bodies are coupled to be movable relative to each other. Further, the mobile terminal described herein may be any portable electronic device having a camera and flash, for example, a mobile phone, a smart phone, a notebook computer, a digital broadcast terminal, a Personal Digital Assistants ), A PMO (Portable Multimedia Player), and the like.

The mobile terminal (200) according to the present invention includes a terminal body (204) constituting its appearance.

The casing (casing, housing, cover, etc.) constituting the external appearance of the terminal body 204 is formed by the front case 201, the rear case 202, and the battery case 203. The battery case 203 is formed so as to cover the rear surface of the rear case 202.

Various electronic components are embedded in the space formed between the front case 201 and the rear case 202. The cases may be formed by injection molding a synthetic resin, or may be formed to have a metal material such as stainless steel (STS) or titanium (Ti) or the like.

The display unit 210 includes a display unit 210, a first sound output unit 211, a front camera unit 216, a side key 214, an interface unit 215, and a signal input unit 217 .

The display unit 210 includes an LCD (Liquid Crystal Display) module, an OLED (Organic Light Emitting Diodes) module, and an e-paper for visually expressing information. The display unit 210 may include touch sensing means for inputting data by a touch method. Hereinafter, the display unit 210 including the touch sensing unit will be referred to as a 'touch screen'. If any one of the touches on the touch screen 210 is touched, the contents corresponding to the touched position are input. The content input by the touch method may be a letter or a number, an instruction in various modes, a menu item which can be designated, and the like. The touch sensing means is formed in a translucent manner so that the display portion can be seen, and a structure for enhancing the visibility of the touch screen in a bright place may be included. Referring to FIG. 2, the touch screen 210 occupies most of the front surface of the front case 201.

The first sound output unit 211 may be implemented as a receiver for delivering a call sound to a user's ear or a loud speaker for outputting various alarm sounds or multimedia playback sounds.

The front camera unit 216 processes an image frame such as a still image or a moving image obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame can be displayed on the display unit 210. [

The image frame processed by the front camera 216 can be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ The front camera 216 may be provided in two or more depending on the use environment.

The signal input unit 217 is operated to receive a command for controlling the operation of the mobile terminal 200 and may include a plurality of input keys. The input keys may also be referred to as a manipulating portion and may be employed in any manner as long as the user has a tactile sense and operates in a tactile manner.

For example, a dome switch or touch screen capable of receiving a command or information by a push or touch operation of a user, a touch pad, or a wheel, a jog type or a joystick for rotating a key . The contents input by the signal input unit 217 can be variously set. For example, to enter start, end, scroll, and the like.

Side keys 214, an interface unit 215, a sound input unit 213, and the like are disposed on side surfaces of the front case 201.

The side key 214 may be collectively referred to as an operation unit, and a command for controlling the operation of the mobile terminal 200 may be input. The side key 214 may be employed in any manner as long as the user is operating in a tactile manner with a tactile impression. The content input by the side key 214 can be variously set. For example, by the side key 214, it is possible to control the image input units 216 and 221, adjust the size of the sound output from the sound output unit 211, or switch the display unit 210 to the touch recognition mode Command can be input.

The sound input unit 213 may be implemented, for example, in the form of a microphone to receive a user's voice, other sounds, and the like.

The interface unit 215 is a channel through which the mobile terminal 200 related to the present invention can exchange data with an external device. For example, the interface unit 215 may be a wired or wireless connection terminal for connecting to an earphone, a port for short-range communication (for example, an IrDA port, a Bluetooth port, a wireless LAN port A wireless LAN port) or the like, or power supply terminals for supplying power to the mobile terminal 200. The interface unit 215 may be implemented as a socket for receiving an external card such as a SIM (Subscriber Identification Module) or a UIM (User Identity Module) or a memory card for storing information.

A power supply unit 240 and a rear camera unit 221 are disposed on the rear surface of the terminal body 204.

A flash 222 and a mirror (not shown) may be disposed adjacent to the rear camera unit 221. The flash illuminates the subject toward the subject when the subject is photographed by the rear camera unit 221.

The mirror allows the user to illuminate the user's own face or the like in the case where the user intends to photograph (self-photograph) himself / herself by using the rear camera unit 221. [

The rear camera unit 221 may have a photographing direction substantially opposite to that of the front camera unit 216 disposed on the front side and may be a camera having different pixels from the front camera unit 216. [

For example, the front camera unit 216 has low pixels so that it is easy to capture a face of a user in the case of a video call or the like and transmit the face to the other party. The rear camera unit 221 photographs a general subject and immediately transmits It is preferable to have a high pixel. The front and rear camera units 216 and 221 may be installed in the terminal body 204 to be rotatable or pop-upable.

The battery 240 supplies power to the mobile terminal 200. The battery 240 may be built in the terminal body 204 or may be directly detachable from the outside of the terminal body 204.

4 is an exploded perspective view of FIG.

Referring to FIG. 4, the mobile terminal includes a window 210a and a display module 210b that constitute the display unit 210. Referring to FIG. The window 210a may be coupled to one surface of the front case 201. [ The window 210a and the display module 210b may be integrally formed.

A frame 260 is formed to support electrical elements between the front case 201 and the rear case 202. The frame 260 is a supporting structure inside the terminal and includes a display module 210b, a camera module 221, an antenna device, an antenna module having a plurality of antenna devices, a battery 240, And at least one of them can be supported.

The frame 260 may be partially exposed to the outside of the terminal. In addition, the frame 260 may constitute a part of a sliding module that connects the main body and the display unit to each other in a slide type terminal, not a bar type.

4 shows that the circuit board 250 is disposed between the frame 260 and the rear case 202 and the display module 210b is coupled to one side of the frame 260 . The circuit board 250 and the battery may be disposed on the other surface of the frame 260 and the battery case 203 may be coupled to the rear case 202 to cover the battery.

The window 210a is coupled to one surface of the front case 201. A touch sensing pattern 210c may be formed on one side of the window 210a to detect a touch. The touch sensing pattern 210c is formed to sense the touch input and is made of light transmissive. The touch sensing pattern 210c may be mounted on the front surface of the window 210a and may be configured to convert a change in a voltage or the like occurring in a specific portion of the window 210a into an electrical input signal.

The display module 210b is mounted on the rear surface of the window 210a. In this embodiment, a thin film transistor-liquid crystal display (TFT LCD) is disclosed as an example of the display module 210b, but the present invention is not limited thereto.

For example, the display module 210b may be a liquid crystal display (LCD), an organic light-emitting diode (OLED), a flexible display, a three-dimensional display .

As described above, the circuit board 250 may be formed on one side of the frame 260, but may be mounted on the lower side of the display module 210b. At least one electronic device is mounted on the lower surface of the circuit board 250.

A recessed receptacle is formed in the frame 260 to receive the battery 240. A contact terminal connected to the circuit board 250 may be formed on one side of the battery receiving part to supply power to the terminal body.

An antenna device may be formed on the upper or lower end of the mobile terminal. Also, the plurality of antenna devices may be disposed at each end of the terminal, and each antenna device may be configured to transmit and receive radio signals of different frequency bands. Such an antenna device may be formed including conductive members formed on one side of the carrier. For example, the carrier 390 with the conductive members formed thereon can be seated in the portion A shown in Fig. The carrier 390 can be coupled to the A portion of the case 201 by a fastening means such as a screw. At this time, the screw can be fastened to the hole 262 formed in the case 201 through the through hole formed in the carrier 390. The ribs 263 of the frame 260, which will be described later, can define a space in which the carrier 390 is mounted.

The frame 260 may be formed of a metal material so that sufficient rigidity can be maintained even if the frame 260 is formed to have a small thickness. The metal frame 260 may operate as a ground. That is, the circuit board 250 or the antenna device may be grounded to the frame 260, and the frame 260 may operate as the circuit board 250 or the ground of the antenna device. In this case, the frame 260 may extend the ground of the mobile terminal.

The circuit board 250 is electrically connected to the antenna device and is configured to process a wireless signal (or radio electromagnetic wave) transmitted and received by the antenna device. For processing of the radio signal, a plurality of transmission / reception circuits may be formed or mounted on the circuit board 250.

The transceiver circuits may be formed including one or more integrated circuits and associated electrical components. In one example, the transceiver circuitry may include a transmit integrated circuit, a receive integrated circuit, a switching circuit, an amplifier, and the like.

The plurality of transceiver circuits simultaneously feed conductive members formed of a conductive pattern that is a radiator, so that the plurality of antenna devices can operate simultaneously. For example, while either one is transmitting, the other can receive, both transmit or both receive.

The coaxial cable may be formed to connect the circuit board and the respective antenna devices to each other. As an example, the coaxial cable may be connected to a power feeding device for feeding antenna devices. The power feeding devices may be formed on one surface of the flexible circuit board 242, which is formed to process signals input from the operation unit 217. [ The other surface of the flexible circuit board 242 may be combined with a signal transmission unit formed to transmit a signal of the operation unit 217. [ In this case, a dome may be formed on the other surface of the flexible circuit board 242, and an actuator may be formed in the signal transmission unit.

The antenna devices ANT1 and ANT2 may be formed on one side and the other side of the carrier 390, respectively. Each of the antenna devices ANT1 and ANT2 is formed to transmit and receive signals of different frequency bands.

For example, the first antenna device ANT 1 may be formed to transmit and receive signals of the DCN 1x scheme or the PCS 1x scheme, and the second antenna device ANT 2 may be formed of a DCN EVDO (Evolution-Data Optimized or Evolution- Data Only) system.

In addition, when the first antenna apparatus ANT 1 transmits / receives a signal conforming to the LTE B4 scheme, the second antenna apparatus ANT 2 can be formed to transmit / receive signals conforming to the LTE B13 scheme.

Alternatively, when the first antenna device ANT 1 transmits / receives a signal corresponding to the voice service of the mobile terminal, the second antenna device ANT 2 may be configured to transmit / receive a data signal corresponding to the LTE service of the mobile terminal have.

A flexible circuit board 242 is connected to the lower portion of the carrier 390. The flexible circuit board 242 may be connected to a circuit board 250, one end of which is provided with a control unit. And the flexible circuit board 242 may be connected to the operation unit 217 of the terminal. In this case, the flexible circuit board 242 is formed so that the signal generated by the operation unit 217 is transmitted to the control unit of the circuit board 250. The flexible circuit board 242 is formed at a lower portion of the operation portion 217 to be connected to the operation portion 217 and is in contact with the signal transmission portion 217a formed between the operation portion 217 and the flexible circuit board 242 .

One surface of the flexible circuit board 242 is formed to be in contact with the operation unit 217 and the first antenna unit ANT1 and the power supply connection F of the second antenna unit ANT2 are formed on the other surface of the flexible circuit board 242, The contact portion 242a may be formed so as to be connected to the ground connection portion G, respectively.

The first antenna device ANT1 and the second antenna device ANT2 may constitute the antenna modules 300 and 400 according to the embodiments described below. Hereinafter, the first antenna device ANT1 and the second antenna device ANT2 correspond to the first members 310 and 410 and the second members 320 and 420, respectively. Hereinafter, the present invention will be described with reference to the drawings.

5 is a perspective view of an antenna module according to a comparative example.

Referring to FIG. 5, the antenna module 30 according to the comparative example includes a first member 31 and a second member 32. The first member 31 and the second member 32 may operate as radiators of the first antenna device and the second antenna device ANT 2, respectively. The first member 31 and the second member 32 are disposed close to each other, and are formed to resonate at a predetermined frequency, respectively. That is, the first member 31 may be formed to have a predetermined length to resonate at the first frequency, and the second member 32 may be formed to have a certain length to resonate at the second frequency. The first frequency and the second frequency may be the same or adjacent frequencies. The first member 31 and the second member 32 may be formed to have a length of about λ / 4 corresponding to the first and second frequencies, respectively.

The first member 31 and the second member 32 may be formed in a conductive pattern printed on one surface of the carrier 39.

The first member 31 and the second member 32 are spaced apart from each other by a predetermined distance d and are not connected to each other. Feed connection portions 31a and 32a may be formed at one side of the first member 31 and the second member 32, respectively. The first member 31 and the second member 32 may be independently connected to the power supply unit by the power supply connection units 31a and 32a, respectively, and may be connected to different transmission / reception circuits. In this case, the first member 31 and the second member 32 may have the same characteristic impedance, and the value may be 50 ohms.

For this reason, the first member 31 and the second member 32 can each operate as a monopole type antenna.

In such an antenna module 30, when one member transmits a signal, part of the transmitted signal may affect the other member.

For example, when the first member 31 transmits a signal, another current induced by the current flowing along the surface of the first member 31 may flow along the surface of the second member 32. Such mutual coupling has a greater influence as the distance d between the first member 31 and the second member 32 decreases.

The mutual interference formed by placing the first member 31 and the second member 32 in close proximity to each other not only causes a loss of transmission power of the first antenna, but also degrades the performance of a transmitter connected to an adjacent second antenna. This may cause adverse effects such as saturation of the receiver or degradation of sensitivity. Also, currents induced in adjacent second antennas distort the gain pattern.

 FIG. 6 is a diagram illustrating a reflection coefficient according to frequency in the antenna module 30 shown in FIG. 5.

When the first member 31 and the second member 32 are separated by a distance d of about 5 mm, the mutual interference is shown when the first member 31 operates. S22 = S11 and S12 = S21 because of the symmetry and mutuality of the first member 31 and the second member 32 constituting the first antenna device ANT 1 and the second antenna device ANT 2. As shown in FIG. 6, it can be seen that the degradation due to mutual interference between the first member 31 and the second member 32 corresponds to about −8.4 dB.

Such mutual interference may reduce the influence by electrically isolating the first member 31 and the second member 32 from each other. As a method of electrical isolation, a method of separating the first member 31 and the second member 32 from each other by λ / 2 times or more of a wavelength corresponding to a fundamental frequency may be used. However, since a miniaturized terminal such as a mobile terminal uses a frequency of about 700 to 800 MHz, the value of λ / 2 reaches 400 mm, which is practically impossible.

In order to smoothly transmit and receive signals in a system equipped with an MIMO or diversity antenna, a first antenna (main antenna at the transmitting or receiving end) and a second antenna (diversity Or the receive-side sub-antenna of the MIMO system), the value of the mutual coupling and the related coefficient (Envelope Correlation Coefficient) must be low.

For example, as a required reception condition, the main antenna operates in the same way as a single receiver, the difference in gain between the two antennas is less than 6 dB, the Envelope Correlation Coefficient (ECC) is 0.5 The use of the main antenna always at the transmitting side, and the antenna to antenna isolation greater than 8 dB are satisfied, it can operate well as a MIMO antenna at the frequency of the LTE band.

Except for the basic performance of antennas such as Gain and Bandwidth, it is the most difficult to implement a MIMO antenna in a mobile terminal. It is a point.

In order to satisfy such a condition, the two antennas need to be spaced apart by a distance of more than half wavelength or configured so that the polarization directions of the two antennas are as perpendicular to each other as possible. However, for example, LTE, which is a fourth generation mobile communication, uses a 700 MHz band, and the half-wave length may exceed 400 mm, so it may be difficult to actually separate the two antennas by more than half the distance from the mobile terminal. .

Therefore, a method of electrically separating the first member and the second member to improve the separation distance will be described below.

7 is a perspective view of an antenna module according to an embodiment of the present invention, Figure 8 is a conceptual diagram of the antenna module shown in FIG. 9A is a conceptual diagram illustrating a main flow of current flowing along surfaces of the first member and the second member when the phases are 0 degrees and 90 degrees, respectively, in the conceptual diagram illustrated in FIG. 8, and FIG. 9B is illustrated in FIG. 8. In the conceptual diagram, when the phase is 180 degrees and 270 degrees, respectively, it is a conceptual diagram showing the main flow of current flowing along the surface of the first member and the second member. 10 is a diagram illustrating a reflection coefficient according to frequency in the antenna module shown in FIG. 7.

7 and 8, the antenna module 300 according to the embodiment of the present invention includes a first member 310 and a second member 320. The first member 310 and the second member 320 may operate as radiators of the first antenna device ANT 1 and the second antenna device ANT 2, respectively. The first member 310 and the second member 320 are disposed close to each other, each formed to resonate at a predetermined frequency. That is, the first member 310 may be formed to have a predetermined length to resonate at the first frequency, and the second member 320 may be formed to have a certain length to resonate at the second frequency. Each member may be formed of a meander structure or a meander structure so that members can be formed in a predetermined length within a limited space.

The first frequency and the second frequency may be the same or adjacent frequencies. The first member 310 and the second member 320 may be formed to have a length of about λ / 4 corresponding to the first and second frequencies, respectively.

The first member 310 and the second member 320 may be formed in a conductive pattern printed on one surface of the carrier 390, or may be formed in a case forming a circuit board of the terminal or an appearance of the terminal. Carrier 390 is a dielectric formed with a constant dielectric constant, FR-3 consisting of a layer of paper impregnated with an epoxy resin binder, CEM-1 which is a composite having a paper core impregnated with an epoxy resin may be used. . In addition, the surface of the woven glass fiber is impregnated with epoxy resin, the core is woven glass fiber impregnated with CEM-3, epoxy resin impregnated glass fiber impregnated with FR-4, It can include materials such as FR-5, which consists of multiple layers of woven glass fibers impregnated with a multi-functional epoxy resin, GI consisting of multiple layers of woven glass fibers impregnated with polyimide resin, and parts of a printed circuit board (PCB). have.

The first member 310 and the second member 320 are spaced apart from each other by a predetermined distance d1 and are not connected to each other. Each of the first member 310 and the second member 320 may be independently connected to a power supply unit, and may be connected to different transmission / reception circuits, respectively. At this time, the first member 310 and the second member 320 may have the same characteristic impedance, the value may be 50 Ohm (Ohm).

As a result, the first member 310 and the second member 320 may operate as a monopole type antenna, respectively.

Feed connection portions 310a and 320a may be formed at one side of the first member 310 and the second member 320, respectively. First and second feed parts corresponding to the feed connection parts 310a and 320a may be formed on the circuit board on which the ground is formed, respectively.

The power feeding connection part F electrically connects the feeding part to the conductive member or feeds the conductive member by EM (electro-magnetic) feeding method. For this connection, the feed connection F may include at least one of a feed plate, a power supply clip, or a feeder line. Here, any one of the feed plate, the power supply clip, and the feeder line is electrically connected to the other one to transmit a current (or voltage) supplied through the feeder unit to the conductive members that transmit and receive the wireless signal. Here, the feed line may include a microstrip printed on a substrate.

The feeding device may include a feeding part and a matching part. The feed unit may be configured by a combination of a balun, a phase shifter, a distributor, an attenuator, and an amplifier. The matching unit may be implemented as a series element or a shunt element. When composed of series elements, the reactance, which is the imaginary part of the impedance, can be changed. For example, inductors increase reactance and capacitors lower reactance, so the impedance of a particular frequency band can change. Alternatively, in the case of a shunt device, the resistance, which is the real number of the impedance, can be changed. For example, the impedance of a particular frequency band can be changed by increasing the resistance value of the inductor and lowering the resistance value of the capacitor.

The substrate may be a flexible circuit board 242 (see FIG. 4) or a circuit board 260. The substrate may be a dielectric substrate or a semiconductor substrate, and any one of the layers may be a ground if the substrate has a ground on one side or a multilayer substrate. Depending on the antenna type, one end of the conductive member may be grounded to ground.

A transceiver circuit portion may be formed on one surface of the circuit board. The transmitting / receiving circuit unit is connected to the power feeding unit. The transmission / reception circuit section transmits a radio signal by feeding the conductive member through the feeding section and the matching section, or receives the radio signal received by the conductive member through the matching section and the feeding section to receive a predetermined signal Reception processing.

As described above, mutual interference formed by the first member 310 and the second member 320 disposed close to each other results in a loss of transmission power of the first antenna, and the performance of a transmitter connected to an adjacent second antenna. In addition to causing degradation, it can also cause adverse effects such as saturation or desensitization of the receiver. Also, currents induced in adjacent second antennas distort the gain pattern.

According to an embodiment of the present invention, when any one member constituting the antenna device operates to reduce mutual interference between the first antenna device ANT 1 and the second antenna device ANT 2, the other member is electrically connected. Cancer members are formed to isolate.

At this time, the member and the arm member may be formed in an open loop structure in the capacitive coupling portion.

The arm members 330 and 340 may be disposed between the first member 310 and the second member 320, respectively. The first arm member 330 is formed in close proximity to the first member 310 to be capacitive coupling (CC) to the first member 310, and the second arm member 340 is the second member 320. And may be capacitively coupled to the second member 320. Due to capacitive coupling, the value of the capacitive reactance of the antenna can be increased. Increasing the value of the capacitive reactance reduces the resonance frequency because the input impedance due to capacitance is inversely proportional to frequency. The reduced resonant frequency is that the antenna device can be operated in the lower frequency band with shorter length by including capacitive coupling. That is, if the antenna device includes capacitively coupled members, the antenna device can operate in a low frequency band in a narrower space.

Each arm member 330, 340 may be grounded to ground. To this end, a ground connection may be formed at one side of the arm members 330 and 340. The ground connection G can ground and electrically connect the conductive member and the ground to achieve an impedance match to the resonant frequency of the antenna. The ground connection part G has at least two paths having different lengths, and may be formed with a switch corresponding to each path. Also, through a switch that selects each pass, each pass selectively connects the electrical ground and radiators (e.g., conductive members) to different lengths. Here, the path is an electrical path connecting the ground and the radiator, and may include at least one of a ground plate, a grounding clip, or a grounding line. Further, the lengths of the paths can be formed differently by forming the ground wires to have different lengths.

Referring to FIGS. 7 and 8, the arm members 330 and 340 may include first coupling parts 331 and 341 and second coupling parts 332 and 342, respectively. The first coupling parts 331 and 341 and the second coupling parts 332 and 342 may be formed in parallel with each other and one side may be connected to each other.

Referring to the first antenna device ANT 1 as an example, the first coupling part 331 is capacitively coupled to the first member 310, and the second coupling part 332 is the second antenna device ANT 2. ) May be capacitively coupled to the second coupling portion 342. Herein, the distance d2 between the first member 310 and the first coupling part 331 may be 0.2 mm to 1 mm. In addition, the distance d3 between the second member 320 and the second coupling part 341 may be 0.2 mm to 1 mm. In addition, a distance d1 between the second coupling part 332 of the first antenna device ANT 1 and the second coupling part 342 of the second antenna device ANT 2 may be within 5 mm.

9A and 9B, when the first member 310 is supplied with a current flowing along the surface, current may also flow in the first arm member 330 due to capacitive coupling. Then, the current flowing along the first coupling portion 331 flows along the connected second coupling portion 332, and the current induced in the capacitively coupled second arm member 340 flows again. In this case, the second antenna device ANT 2 operates as the ground of the first antenna device ANT 1.

That is, the antenna module 300 according to the embodiment of the present invention electrically connects the first antenna device ANT 1 and the second antenna device ANT 2 by capacitively coupling conductive members. However, each antenna device operates independently and when one antenna device operates, the other antenna device operates as ground.

Thus, the first antenna device ANT 1 and the second antenna device ANT 2 are electrically isolated. Although the first antenna device ANT 1 and the second antenna device ANT 2 are electrically connected to each other, as shown in FIG. 10, the performance degradation due to mutual interference is only about -27.2 dB. This is because, when the antenna device resonates by impedance matching, the current excited to the ground at the resonance frequency becomes small.

Accordingly, the antenna module 300 according to the embodiment of the present invention may express, in another sense, that one antenna device is grounded to the other antenna device.

11 is a perspective view of an antenna module 400 according to another embodiment of the present invention.

Referring to FIG. 11, an antenna module 400 according to another embodiment of the present invention includes a first member 410 and a second member 420. The first member 410 and the second member 420 may operate as radiators of the first antenna device ANT 1 and the second antenna device ANT 2, respectively. The first member 410 and the second member 420 are disposed close to each other, and are formed to resonate at a predetermined frequency, respectively. That is, the first member 410 may be formed to have a predetermined length to resonate at the first frequency, and the second member 420 may be formed to have a certain length to resonate at the second frequency. Each member may be formed of a meander structure or a meander structure so that members can be formed in a predetermined length within a limited space.

The first frequency and the second frequency may be the same or adjacent frequencies. The first member 410 and the second member 420 may be formed to have a length of about λ / 4 corresponding to the first and second frequencies, respectively.

The first member 410 and the second member 420 are spaced apart from each other by a predetermined distance d1 and are not connected to each other. Each of the first member 410 and the second member 420 may be independently connected to a power supply unit, and may be connected to different transmission / reception circuits, respectively. At this time, the first member 410 and the second member 420 may have the same characteristic impedance, the value may be 50 Ohm (Ohm).

As a result, the first member 410 and the second member 420 may operate as a monopole type antenna, respectively.

Feed connectors 410a and 420a may be formed at one side of the first member 410 and the second member 420, respectively. First and second feed parts corresponding to the feed connection parts 410a and 420a may be formed on the circuit board on which the ground is formed.

When any one member constituting the antenna device operates to reduce mutual interference between the first antenna device ANT 1 and the second antenna device ANT 2, the female member is formed to electrically isolate the other member. .

At this time, the member and the arm member may be formed in an open loop structure in the capacitive coupling portion.

The arm members 430 and 440 may be disposed between the first member 410 and the second member 420, respectively. The first arm member 430 is formed in proximity to the first member 410 and is capacitive coupled to the first member 410, and the second arm member 440 is connected to the second member 420. It may be formed in close proximity and capacitively coupled to the second member 420.

The arm members 430 and 440 may include first coupling parts 431 and 441 and second coupling parts 432 and 442, respectively. The first coupling parts 431 and 441 and the second coupling parts 432 and 442 may be formed in parallel with each other and one side thereof may be connected to each other.

Referring to the first antenna device ANT 1 as an example, the first coupling part 431 is capacitively coupled to the first member 410, and the second coupling part 432 is the second antenna device ANT 2. The second coupling portion 442 of the) may be electrically connected by the connection member 450. The connection member 450 may be made of a conductive material.

When the first member 410 is powered and current flows along the surface, current may also flow in the first arm member 430 due to capacitive coupling. Then, the current flowing along the first coupling portion 431 flows along the connected second coupling portion 432, and the current flows along the second arm member 440 connected by the connection member 450. In this case, the second antenna device ANT 2 operates as the ground of the first antenna device ANT 1.

The above-described antenna module and a mobile terminal having the same may not be limitedly applied to the configuration and method of the above-described embodiments, but the embodiments may be modified in whole or in part to enable various modifications. It may alternatively be configured in combination.

Claims (20)

A first member and a second member disposed close to each other and formed to resonate at a predetermined frequency, respectively; And
An antenna comprising a first arm member and a second arm member disposed between the members to electrically isolate another member when the one member is in operation, each capacitively coupled to the one member module. The method of claim 1,
The antenna module further includes a ground to which the arm members are grounded. 3. The method of claim 2,
The ground is formed on the circuit board,
And a first feed part feeding and feeding the first member and a second feeding part feeding and feeding the second member to the circuit board. The method of claim 1,
Each member and the arm member to be capacitively coupled are formed parallel to each other spaced apart. 5. The method of claim 4,
An antenna module, wherein each of the capacitively coupled members and the female member is spaced apart from each other is 0.2 mm to 1 mm. The method of claim 1,
And the members are each formed to have a length of about λ / 4 corresponding to a predetermined frequency. The method of claim 1, wherein
And the member and the arm member are each formed in a loop structure that is open at a capacitively coupled portion. The method of claim 1,
The antenna module further comprises a connection member for electrically connecting the arm members. The method of claim 1,
The arm members each have a first coupling portion and a second coupling portion formed in parallel with each other and one side is connected to each other,
And the first coupling part is capacitively coupled to the member. 10. The method of claim 9,
And the second coupling portion is capacitively coupled to a second coupling portion of another adjacent arm member. 10. The method of claim 9,
The antenna module, characterized in that the spacing between the second coupling portion formed to face each other in parallel. Terminal body; And
An antenna module embedded in the body and configured to operate at a first frequency and a second frequency,
The antenna module,
A first member formed to have an electrical length corresponding to the first frequency;
A second member having an electrical length corresponding to the second frequency; And
And a first arm member and a second arm member for ground connection of the first member to the second member such that the second member operates to ground when the first member is operated. The method of claim 12,
The mobile terminal further comprises a ground to which the arm members are grounded. 14. The method of claim 13,
The ground is formed on a circuit board embedded in the body,
And a second feeder configured to feed a power supply to the first member and a second feeder connected to the second member on the circuit board. The method of claim 12,
The first member and the first arm member are capacitively coupled to each other,
And the second member and the second arm member are capacitively coupled to each other. 16. The method of claim 15,
And the first arm member and the second arm member are capacitively coupled to each other. 17. The method of claim 16,
Each member and the arm member to be capacitively coupled are formed parallel to each other spaced apart from each other. The method of claim 12,
(The mobile terminal) further comprises a connection member for electrically connecting the female members. The method of claim 12,
The arm members each have a first coupling portion and a second coupling portion formed in parallel with each other and one side is connected to each other,
And the first coupling parts are capacitively coupled to the member, respectively. 20. The method of claim 19,
And the second coupling parts are formed in parallel with each other, and a distance between the second coupling parts is within 5 mm.

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