Hereinafter, a mobile terminal according to the present invention will be described in detail with reference to the drawings. 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 the present specification, the same or similar reference numerals are assigned to the same or similar configurations in different embodiments, and the description thereof is replaced with the first description. As used herein, the singular forms "a", "an" and "the" include plural forms unless the context clearly indicates otherwise.
The mobile terminal described herein may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), navigation, and the like. 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, etc., except when applicable only to mobile terminals.
The mobile terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, and an interface. The unit 170, the controller 180, and the power supply unit 190 may be included. The components shown in FIG. 1 are not essential, so that 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 that enable wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and a 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, a location information module 115, and the like. .
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 mean a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a previously generated broadcast signal and / or broadcast related information and transmits the same to a terminal. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal.
The broadcast related information may mean information related to a broadcast channel, a broadcast program, or 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, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).
The broadcast receiving module 111 may include, for example, Digital Multimedia Broadcasting-Terrestrial (DMB-T), Digital Multimedia Broadcasting-Satellite (DMB-S), Media Media Forward Link Only (FLO), and Digital Video Broadcasting (DVB-H). Digital broadcast signals may be received using digital broadcasting systems such as broadcast-handheld (ISDB-T) and integrated services digital broadcast-terrestrial (ISDB-T). Of course, the broadcast receiving module 111 may be configured to be suitable for not only the above-described digital broadcasting system but also other broadcasting systems.
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 a wireless signal with 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 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. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.
The short range communication module 114 refers to a module for short range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and the like may be used.
The location information module 115 is a module for obtaining a location of a mobile terminal, and a representative example thereof is a GPS (Global Position System) module.
Referring to FIG. 1, the A / V 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 call mode or the photographing mode. The processed image frame may be displayed on the base portion 265 and 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 according to the use environment.
The microphone 122 receives an external sound signal by a microphone in a call mode, a recording mode, a voice recognition mode, etc., and processes the external sound signal into electrical voice data. The processed voice data may be converted into a form transmittable to the mobile communication base station through the mobile communication module 112 and output in the call mode. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of receiving an external sound signal.
The user input unit 130 generates input data for the 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 detects a current state of the mobile terminal 100 such as an open / closed state of the mobile terminal 100, a location of the mobile terminal 100, presence or absence of a user contact, orientation of the mobile terminal, acceleration / deceleration of the mobile terminal, and the like. To generate 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. The sensing unit 140 may include a proximity sensor 141.
The output unit 150 is used to generate an output related to sight, hearing, or tactile sense, and includes a display unit 151, an audio output module 152, an alarm unit 153, and a haptic module 154. Can be.
The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile terminal is in a call mode, the mobile terminal displays a user interface (UI) or a graphic user interface (GUI) related to the call. When the mobile terminal 100 is in a video call mode or a photographing mode, the mobile terminal 100 displays a photographed and / or received image, a UI, and a GUI.
The display unit 151 includes 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). and at least one of a 3D display.
Some of these displays can be configured to be transparent or light transmissive so that they can be seen from the outside. This may be referred to as a transparent display. A representative example of the transparent display is TOLED (Transparent OLED). The rear structure of the display unit 151 may also be configured as a light transmissive structure. With this structure, the user can see the 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 implementation form of the mobile terminal 100. For example, 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.
When the display unit 151 and a sensor for detecting a touch operation (hereinafter, referred to as a touch sensor) form a mutual layer structure (hereinafter referred to as a touch screen), the display unit 151 may be configured in addition to an output device. Can also be used as an input device. The touch sensor may have, for example, a form of a touch film, a touch sheet, a touch pad, or the like.
The touch sensor may be configured to convert a change in pressure applied to a specific portion of the display unit 151 or capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor may be configured to detect not only the position and area of the touch but also the pressure at the 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 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.
Referring to FIG. 1, a proximity sensor 141 may be disposed in an inner region of a mobile terminal surrounded by the touch screen or near 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 an object present in the vicinity without using a mechanical contact by using an electromagnetic force or infrared rays. Proximity sensors have a longer life and higher utilization than touch sensors.
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. When the touch screen is capacitive, the touch screen is configured to detect the proximity of the pointer by the change of the electric field according to the proximity of the pointer. 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 proximity touch is performed by the pointer on the touch screen refers to a position where the pointer is perpendicular to the touch screen when the pointer is in proximity proximity.
The proximity sensor detects 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). Information corresponding to the sensed proximity touch operation and 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 may also output a sound signal related to a function (eg, a call signal reception sound, a message reception sound, etc.) performed in the mobile terminal 100. The sound output module 152 may include a receiver, a speaker, a buzzer, and the like.
The alarm unit 153 outputs a signal for notifying occurrence of an event of the mobile terminal 100. Examples of events occurring in the mobile terminal include call signal reception, message reception, key signal input, and touch input. The alarm unit 153 may output a signal for notifying occurrence of an event in a form other than a video signal or an 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 151 and 152 may be classified as part of the alarm unit 153.
The haptic module 154 generates various haptic effects that a user can feel. Vibration is a representative example of the haptic effect generated by the haptic module 154. The intensity and pattern of vibration generated by the haptic module 154 can be controlled. For example, different vibrations may be synthesized and output or may be 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 may not only deliver the haptic effect through direct contact, but also may implement the user to feel the haptic effect through a muscle sense such as a finger or an arm. Two or more haptic modules 154 may be provided according to a configuration aspect of the mobile terminal 100.
The memory 160 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 160 may store data regarding vibration and sound of various patterns output when a touch input on the touch screen is performed.
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), RAM (Random Access Memory, RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), Magnetic Memory, Magnetic It may include a storage medium of at least one type of disk, optical disk. The mobile terminal 100 may operate in connection with a web storage that performs a storage function of the memory 160 on the Internet.
The interface unit 170 serves as a path with all external devices connected to the mobile terminal 100. The interface unit 170 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, wired / wireless headset ports, external charger ports, wired / wireless data ports, memory card ports, ports for connecting devices with identification modules, and audio input / output (I / O) ports The video input / output (I / O) port, the earphone port, and the like may be included in the interface unit 170.
The identification module is a chip that stores various types of information for authenticating the usage rights of the mobile terminal 100, and includes a user identification module (UIM), a subscriber identify module (SIM), and a universal user authentication module ( Universal Subscriber Identity Module (USIM), and the like. 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 a port.
The interface unit 170 may be a passage through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, or various commands input from the cradle by a user. The signal may be a passage for transmitting to the mobile terminal. Various command signals or power input from the cradle may be operated as signals 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, perform related control and processing for voice calls, data communications, video calls, and the like. The controller 180 may include a multimedia module 181 for playing multimedia. The multimedia module 181 may be implemented in the controller 180 or may be implemented separately from the controller 180.
The controller 180 may perform a pattern recognition process for recognizing a writing input or a drawing input performed on the touch screen as text and an image, respectively.
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.
Various embodiments described herein may be implemented 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 functions and operations described herein. Software code may be implemented in software applications written in a suitable programming language. The software code may be stored in the memory 160 and executed by the controller 180.
FIG. 2 is a front perspective view of an example of a mobile terminal according to the present invention, and FIG. 3 is a rear perspective view of the mobile terminal shown in FIG.
2 and 3, the mobile terminal 200 includes a terminal body 204 having a bar shape. However, the present invention is not limited thereto, and the present invention may be applied to various structures such as a slide type, a folder type, a swing type, and the like, in which two or more bodies are coupled to be relatively movable. Furthermore, the mobile terminal described herein may be any portable electronic device having a camera and a flash, for example, a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a personal digital assistant (PDA). ), 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 case (casing, housing, cover, etc.) forming the exterior 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 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 injecting synthetic resin or may be formed of a metal material, for example, a metal material such as stainless steel (STS) or titanium (Ti).
The front surface of the terminal body 204 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 a liquid crystal display (LCD) module, an organic light emitting diodes (OLED) module, an e-paper, and the like that visually express information. The display unit 210 may include a touch sensing means to be input by a touch method. Hereinafter, the display unit 210 including the touch sensing means will be referred to as a 'touch screen'. If there is a touch on any place on the touch screen 210, the content corresponding to the touched position is input. The content input by the touch method may be letters or numbers or menu items that can be indicated or designated in various modes. The touch sensing means is formed to be translucent so that the display unit can be seen, and may include a structure for increasing the visibility of the touch screen in a bright place. According 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 in the form of a receiver for transmitting a call sound to the user's ear or a loud speaker for outputting various alarm sounds or reproduction sounds of multimedia.
The front camera unit 216 processes an image frame such as a still image or a video obtained by an image sensor in a video call mode or a photographing mode. The processed image frame may be displayed on the display 210.
The image frame processed by the front camera 216 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. Two or more front cameras 216 may be provided according to a usage environment.
The signal input unit 217 is manipulated 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 be collectively referred to as a manipulating portion, and may be employed in any manner as long as the user has a tactile feeling and manipulates the input keys.
For example, a dome switch or a touch screen that can receive a command or information by a user's push or touch operation, a touch pad, or a wheel that rotates keys or a jog or a joystick can be implemented. Can be. The content input by the signal input unit 217 may be variously set. For example, it may be for inputting a 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 may receive a command for controlling an operation of the mobile terminal 200. The side key 214 may be employed in any manner as long as the user is tactile in the tactile manner. The content input by the side key 214 may be variously set. For example, the side keys 214 control the image input units 216 and 221, adjust the volume of the sound output from the audio output unit 211, or switch the display unit 210 to the touch recognition mode. You can receive a command.
The sound input unit 213 may be implemented in the form of, for example, a microphone to receive a user's voice, other sounds, and the like.
The interface unit 215 serves as a passage for allowing the mobile terminal 200 according to the present invention to exchange data with an external device. For example, the interface unit 215 may be a wired or wireless connection terminal for connecting to the earphone, a port for short-range communication (for example, an infrared port (IrDA port), a Bluetooth port, a wireless LAN port ( Wireless LAN Port) and the like, or at least one of power supply terminals for supplying power to the mobile terminal 200. The interface unit 215 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 power supply unit 240 and the rear camera unit 221 are disposed at the rear 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 shines toward the subject when the subject is photographed by the rear camera 221.
The mirror allows the user to see his / her own face or the like when photographing (self-photographing) the user using the rear camera unit 221.
The rear camera unit 221 has a photographing direction substantially opposite to the front camera unit 216 disposed on the front surface, and may be a camera having different pixels from the front camera unit 216.
For example, the front camera unit 216 has a low pixel so that it is easy to photograph the user's face and transmit it to the counterpart in the case of a video call, and the rear camera unit 221 captures a general subject and transmits it immediately. In many cases, it is desirable 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-up.
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. 3.
Referring to FIG. 4, the mobile terminal includes a window 210a and a display module 210b constituting the display unit 210. 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.
The frame 260 is formed between the front case 201 and the rear case 202 so that electrical elements are supported. The frame 260 is a support structure inside the terminal, and is formed to support at least one of the display module 210b, the camera module 221, the antenna device, the battery 240, or the circuit board 250. .
A part of the frame 260 may be exposed to the outside of the terminal. In addition, the frame 260 may form part of a sliding module that connects the main body and the display to each other in a slide type terminal other than a bar type.
4 illustrates an example in which a circuit board 250 is disposed between the frame 260 and the rear case 202, and the display module 210b is coupled to one surface of the frame 260. . The circuit board 250 and the battery are 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 surface of the window 210a to detect a touch. The touch sensing pattern 210c is formed to sense a 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 voltage or the like generated at 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 the present 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 necessarily 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 3D display, or the like. Can be.
As described above, the circuit board 250 may be formed on one surface of the frame 260, but may be mounted under the display module 210b. At least one electronic device is mounted on the bottom surface of the circuit board 250.
The frame 260 is provided with a recessed shape to accommodate the battery 240. One side of the battery accommodating part may have a contact terminal connected to the circuit board 250 so that the battery 240 supplies power to the terminal body.
An antenna device may be formed at the top or bottom of the mobile terminal. In addition, a plurality of antenna devices may be formed and 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 include a conductive member 310 (see FIG. 6A) formed on one surface of the carrier 390 (see FIG. 6A). For example, the carrier 390 on which the conductive member 310 is formed may be seated on the portion A shown in FIG. 4. The carrier 390 may be coupled to the A portion of the case 201 by a fastening means such as a screw. In this case, the screw may be fastened to the hole 262 formed in the case 201 through the through hole formed in the carrier 390. The rib 263 of the frame 260 to be described later may limit the space in which the carrier 390 is mounted.
The frame 260 may be formed of a metal material to maintain sufficient rigidity even when formed to a thin thickness. The metal frame 260 may operate as the 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 ground of the circuit board 250 or 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 radio signals (or radio electromagnetic waves) transmitted and received by the antenna device. For the processing of the wireless signal, a plurality of transmission and reception circuits may be formed or mounted on the circuit board 250.
Transceiver circuits may be formed including one or more integrated circuits and associated electrical elements. For example, the transceiver circuit may include a transmitter integrated circuit, a receiver 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 can transmit or both can 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 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.
Antenna devices ANT1 and ANT2 may be formed on one side and the other side of the carrier 390, respectively. Each antenna device ANT1, ANT2 is configured to transmit and receive signals of different frequency bands.
For example, the first antenna device ANT 1 may be formed to transmit and receive a signal of the DCN 1x method or the PCS 1x method, and the second antenna device ANT 2 may be DCN EVDO (Evolution-Data Optimized or Evolution-). Data Only) can be formed to transmit and receive signals according to the scheme.
In addition, when the first antenna device ANT 1 transmits and receives a signal according to the LTE B4 scheme, the second antenna device ANT 2 may be configured to transmit and receive a signal according to the LTE B13 scheme.
In contrast, when the first antenna device ANT 1 transmits and receives a signal corresponding to a voice service of the mobile terminal, the second antenna device ANT 2 may be formed to transmit and receive a data signal corresponding to the LTE service of the mobile terminal. have.
The flexible circuit board 242 is connected to the lower portion of the carrier 390. The flexible circuit board 242 may be connected to the circuit board 250 having one end thereof with a control unit. In addition, 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 such that a signal generated by the operation unit 217 is transmitted to the control unit of the circuit board 250. For example, the flexible circuit board 242 is formed under the operation unit 217 so as to be connected to the operation unit 217, and is in contact with the signal transmission unit 217a formed between the operation unit 217 and the flexible circuit board 242. It can be formed to.
One surface of the flexible circuit board 242 is formed to contact the operation unit 217, and the feed connection part F of the first antenna device ANT1 and the second antenna device ANT2 is formed on the other surface of the flexible circuit board 242. The contact part 242a may be formed to be connected to the ground connection part G, respectively.
5A is a perspective view of an antenna device according to a comparative example, and FIG. 5B is a conceptual diagram of the antenna device shown in FIG. 5A. 5C and 5D are diagrams showing reflection efficiency, resistance, and reactance according to the frequency of the antenna device shown in FIG. 5A, respectively.
The antenna device 30 shown in FIG. 5A is a PIFA type antenna device formed of a conductive member 31 having no branch 32. The antenna device 30 is connected to a feed connection part F to which a signal is input from a substrate and to ground. The ground connection G to be connected may be connected to one end of the conductive member 31. The branch 32 here refers to the part branching off the conductive member 31 to form an additional resonant frequency in the antenna.
If the conductive member 31 is not formed with a branch 32 and is formed in a single pattern, the current flows in one direction only from one end of the conductive member 31 that is fed and grounded to the other end where main radiation of the radio signal occurs. Will flow. If the current flow is simple, the electric or magnetic field formed around the antenna has a simple pattern, thereby improving the specific absorption rate (SAR) of the user. That is, there is no sudden change of current along the conductive member 31.
The conductive member 31 may be formed to have a predetermined length such that the resonance frequency of the antenna device becomes a desired frequency in the λ / 4 or λ / 8 resonant mode. The matching unit 35, the power feeding unit 36, and the transmitting and receiving unit 37 are electrically connected to the conductive member 31, respectively.
Even when the matching unit 35 matching the impedance is coupled to the conductive member 31, the antenna performance can be exhibited only at one frequency (about 1.2 GHz) as shown in FIG. 5B. That is, since the antenna device according to the comparative example has satisfactory antenna characteristics only in a single frequency band, it is difficult to implement an antenna operating in a plurality of frequency bands.
Accordingly, in order to operate in a plurality of frequency bands, a branch member extending from the conductive member 31 must be provided at a portion of the conductive member 31. By adding the branch member to the antenna device, the antenna device can have an additional resonant frequency. The additional resonant frequency may vary depending on conditions such as the length of the branch member and the like.
As such, in order to widen the bandwidth in the low frequency band, a method of branching from the existing conductive member 31 by adding a new conductive member 31 to have an additional resonance frequency as shown by a dotted line in FIG. 5A may be considered. . However, in this case, since the current flowing through the conductive member 31 flows branched along the branch member, the radiation efficiency of the antenna may decrease. The degradation of radiation efficiency also affects bandwidth, so simply adding branch members cannot achieve the desired antenna performance. In addition, the added branch member may generate a current flowing in a different direction with respect to the conductive member 31, thereby causing a change in the magnetic field or the electric field, which may worsen the electromagnetic wave absorption rate of the user.
5C and 5D are diagrams showing reflection efficiency, resistance, and reactance according to the frequency of the antenna device shown in FIG. 5A, respectively. That is, in order to impedance match the conductive member 31 according to the comparative example, the reflection efficiency, resistance, and reactance are illustrated in a state in which the matching unit 35 is formed of shunt elements. 5C and 5D will be described together with reference to FIGS. 6C and 6D.
The antenna device 300 according to the embodiment of the present invention is formed as a conductive member not having a branch, but may operate in a plurality of frequency bands. This will be described in detail below.
6A is a perspective view of an antenna device according to an embodiment of the present invention, FIG. 6B is a conceptual diagram of the antenna device shown in FIG. 6A, and FIGS. 6C and 6D are reflections according to the frequencies of the antenna device shown in FIG. 6A, respectively. Figures show efficiency, resistance and reactance.
The antenna device 300 according to the embodiment of the present invention includes a conductive member 310 and at least one blocking part 320 and 330.
The conductive member 310 may be formed in a single pattern without a branch. The conductive member 310 may be formed by being printed or deposited on one surface of the carrier 390. The feed connection part F and the ground connection part G are formed at one end of the conductive member 310. The feed connection part F and the ground connection part G may be spaced apart from each other. The other end of the conductive member 310 flows weakly, and thus becomes a main emission region of the radio signal. As described above, the conductive member 310 according to the embodiment of the present invention has a branch so that the current flows in one direction only from one end of the conductive member 310 that is fed and grounded to the other end where the main radiation of the wireless signal occurs. It is not equipped. In addition, since the conductive member 310 does not have a branch, a part of the conductive case forming the exterior of the terminal may be used as the conductive member 310. In this case, the conductive case is formed to cover at least one side of the terminal body.
The blocking units 320 and 330 mismatch impedance in adjacent bands of the first frequency or the second frequency when the antenna device resonates at the first frequency and the second frequency. At least one blocking unit 320 and 330 may be disposed between the conductive member 310 and the power feeding unit 360. When a plurality of blocking units 320 and 330 are disposed, impedances may be mismatched in a plurality of cutoff frequency bands to block wireless signals transmitted or received in each frequency band. For example, the first blocking unit 320 is formed to mismatch the impedance in the frequency band of about 1 GHz to about 1.5 GHz, and the second blocking unit 330 mismatches the impedance in the frequency band of about 0.7 GHz or less. It can be formed to.
Here, blocking means mismatching of impedances in the blocking frequency band. Mismatching the impedance means tuning the values of the capacitors and inductors constituting the blocking units 320 and 330 so that the reflection coefficient of the antenna device is close to 0 dB in the blocking frequency band.
The blocking parts 320 and 330 may be implemented as conductive patterns on one surface of the circuit board 250 or the flexible circuit board 242, and each conductive pattern may be formed to function as a capacitor or an inductor. Alternatively, functions such as capacitors or inductors may be implemented with lumped constant elements. That is, the blocking units 320 and 330 may be implemented as concentrated integer elements.
Hereinafter, a case in which a capacitor or an inductor constituting the blocking units 320 and 330 is formed of a concentrated integer element will be described.
The blocking units 320 and 330 implemented as a combination of a capacitor or an inductor may operate as a shunt element or a series element. When the blocking units 320 and 330 are implemented as shunt elements, a resistance value, which is a real part of impedance, may be adjusted. For example, an inductor increases a resistance value and a capacitor decreases a resistance value, thereby causing impedance mismatch in the third frequency band. Tuning is possible. When the blocking units 320 and 330 are formed of a shunt element, the wireless signals corresponding to the third frequency band exit to the ground.
In contrast, when the blocking units 320 and 330 are implemented as a series device, a reactance value, which is an imaginary part of the impedance, may be adjusted. For example, the inductor increases the reactance and the capacitor lowers the reactance to improve impedance in the third frequency band. Tuning for mismatches is possible. When the blocking units 320 and 330 are formed as serial devices, wireless signals corresponding to the third frequency band are reflected.
In addition, the blocking units 320 and 330 may be formed of a shunt element or a combination of series elements.
As described above, the first blocking unit 320 causes an impedance mismatch in the third frequency band corresponding to about 1 GHz to about 1.5 GHz, and thus, at the first frequency and the second frequency that are adjacent frequencies. Antenna efficiency is increased. That is, the reflection efficiency and the bandwidth are improved in the frequency band where the center frequency is the first frequency and the frequency band where the center frequency is the second frequency. Thus, when the first blocking unit 320 mismatches the impedance in the third frequency band between the first frequency and the second frequency, the antenna characteristic is improved at the adjacent first frequency and the second frequency. First proposed through the specification of the invention will be referred to as the balloon effect (Balloon Effect). When the balloon presses the center portion of the balloon, the pressure inflates both sides of the balloon. In the case of the present invention, as described in the embodiment, mismatching impedance in a specific frequency band improves antenna characteristics at frequencies on both sides of the mismatched frequency band. Therefore, it is named balloon effect.
The balloon effect not only improves the antenna characteristics at frequencies on both sides of the mismatched frequency band, but also brings the resonant frequency toward the low frequency or the high frequency, respectively, in the blocked frequency band (frequency rolling effect). For this reason, low frequency resonance can be formed using the conductive member 310 having a shorter length. For example, if the conductive member 310 is formed to have a length of 50 mm in order to have a resonance frequency corresponding to 700 Mhz, the length of the conductive member 310 having a shorter length of 30 mm is 700 even due to the frequency sliding effect. This means that resonant frequencies corresponding to Mhz can be generated, and antenna characteristics can be improved.
In addition, it is possible to reduce the body effect as a side effect of the balloon effect. Body effect means that the characteristics of the antenna change when the body comes into contact with or is close to a certain part of the terminal. For example, a death grip, in which a reception rate decreases when a certain portion of the terminal is held by hand, may be referred to as a body effect. Since the blocking units 320 and 330 block and match impedance in a predetermined frequency band, even if the impedance, magnetic field, or electric field of the antenna device changes due to physical contact, the movement of the frequency due to the change can be suppressed. That is, a problem may occur in that the first frequency or the second frequency moves to the cutoff frequency band when the body contacts or approaches the terminal. The cutoff parts 320 and 330 may be provided to provide a cutoff frequency band. Or the second frequency can be prevented from moving. Therefore, as shown in the embodiment, since the antenna device 310 includes the blocking units 320 and 330, the degradation of the antenna performance due to the body effect can be reduced.
For example, the first blocking unit blocks signals of the third frequency band, thereby preventing the first frequency or the second frequency from moving to the third frequency band. It also brings the effect of pushing the resonant frequency toward the low frequency or the high frequency in the cut off frequency band (frequency sliding effect), respectively. For this reason, low frequency resonance can be formed using the conductive member 310 having a shorter length.
The second blocking unit blocks signals of a frequency band lower than the first frequency, thereby preventing movement of the first frequency. In addition, because of the balloon effect to improve the antenna characteristics of adjacent frequencies, it is possible to improve the bandwidth of the signal band in which the center frequency is the first frequency. In addition, since the signal is blocked by other antennas operating in the lower band, it is possible to improve the isolation characteristics.
6C and 6D are compared with FIGS. 5C and 5D, the configuration of the blocking units 320 and 330 and the conductive member 310 proposed by the present invention are as follows. 6C and 6D show reflection efficiency, resistance, and reactance, respectively, as a result of using the conductive member 310 and the blocking portions 320 and 330 shown in FIGS. 6A and 6B.
In the comparative example and the embodiment, the conductive members 31 and 310 having the same size were used, and the size of the conductive members 31 and 310 was 28 mm in W1, 6 mm in W2, 5 mm in L1, 3.3 mm in L2, and L3. Was formed to be 1mm.
In addition, in the embodiment, the antenna device is formed to include the first blocking part 320 and the second blocking part 330, and the first blocking part 320 is a series device connected in series to the conductive member 310. An inductor has a value of 4.5 nH and a capacitor has a value of 3.0 pF. In addition, the matching unit 350 is implemented as shunt elements, an inductor has a value of 3.9 nH, and a capacitor has a device having a value of 0.6 pF. In addition, the second blocking unit 330 is implemented to improve antenna performance in the low frequency band (a band around 900 MHz) between the feeder 360 and the matching unit 350, and the second blocking unit 330. Was composed of a series capacitor, and a device having a value of 5.6 pF was used.
In the comparative example, unlike the embodiment, only the matching part 35 was used. That is, the matching unit 35 is implemented as shunt elements, an inductor having a value of 3.9 nH and a capacitor having a value of 0.6 pF are used.
The values of the respective elements and the sizes of the conductive members 31 and 310 described above are examples, and the values of the respective elements or the sizes of the conductive members 310 may be changed in order to construct an improved antenna.
As shown in FIGS. 5C and 5D, even in the case of the conductive members 31 and 310 of the same length, in the comparative example, resonance occurs once at about 1.2 GHz at a low frequency, and resonance occurs at about 2.25 GHz at a weak but high frequency. Able to know. In contrast, in the antenna device according to the embodiment in which the blocking units 320 and 330 are added, resonance occurs around 0.8 GHz, which is a low frequency, as shown in FIG. 6C, and a wide bandwidth is obtained in the high frequency band of 1.7 to 2.4 GHz. It can be seen that the resonance occurs. This is due to the balloon effect caused by the first blocking unit 320 mismatching the impedance in the frequency band of about 1 GHz to about 1.5 GHz. In this case, the impedance mismatch means a value of a capacitor or an inductor constituting the first blocking unit 320 to form a reflection coefficient close to 0 dB in a frequency band of about 1 GHz to about 1.5 GHz to produce a balloon effect. To tune.
Due to the formation of the first blocking portion, as shown in FIG. 6C, the reflection coefficient was increased from -7 dB (comparative example) to -19 dB (example) at low frequency, and the reflection coefficient was -4.5 dB in high frequency band (comparative example). It can be seen that the increase from () due to the balloon effect from -10 dB (example).
In addition, it can be seen that the center frequency of the low frequency band has shifted from about 1.2 GHz (comparative example) to about 0.9 GHz (example) (due to the frequency rolling effect derived from the balloon effect).
As described above, the antenna device according to the embodiment includes the blocking parts 320 and 330, so that the antenna performance is not only improved, but the multi-resonance is possible at a plurality of frequencies without having a branch.
FIG. 6E is an exploded perspective view of the antenna device shown in FIG. 6A, and FIG. 6F is a diagram showing a voltage standing wave ratio VSWR depending on the frequency of the antenna device shown in FIG. 6A.
6A and 6E, the configuration of an antenna device according to an embodiment of the present invention will be described.
The conductive member 310 may be formed on a plurality of side surfaces of the carrier 390. The conductive member 310 may have a branch or may not have a branch. When the branch is provided, the branch of the current flowing along the conductive member 310 may be formed to be the minimum. In addition, the conductive member 310 may include at least one hole 311 penetrating the conductive member 310. This 311 hole may be formed at the position where the strongest current flows when a current flows along the conductive member 310. The hole 311 formed as described above may adjust the flow of current along the conductive member 310, and thus may further improve characteristics of the antenna, such as a reflection coefficient.
The through hole 391 penetrating the carrier 390 may be formed in the carrier 390. Contact portions 242a may be formed below the through hole 391. The contacts 242a may be formed on the substrate 242. The contact parts 242a may be respectively connected to the power supply connection part F and the ground connection part G formed at one end of the conductive member 310. In this case, the conductive members 310 may extend along the through hole 391.
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 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 power supply connection part F feeds the power supply part 360 and the conductive member 310 by an electrical connection or an electro-magnetic feeding method. For this connection, the feed connection part F may include at least one of a feed plate, a feed clip, or a feed line. Here, the power feeding plate, the power feeding clip, or the power feeding line is electrically connected to each other, and transmits a current (or voltage) supplied through the power feeding device to the conductive members 310 that transmit and receive a wireless signal. Here, the feed line may include a microstrip printed on the substrate.
The ground connection G may connect the conductive member 310 and the ground to ground, and electrically short the impedance to match the resonance frequency of the antenna. The ground connection part G may include paths having at least two different lengths and may include switches corresponding to the paths. In addition, through the switch for selecting each path, each path selectively connects the electrical ground and the radiators (for example, the conductive member 310) 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 ground line. In addition, the length of the path may be differently formed by forming the ground wires with different lengths.
The blocking parts 320 and 330 may be formed between the contacts and the power feeding part 360, and the connection part 340 may be formed between the blocking parts 320 and 330 and the feeding part 360. The connection part 340 is to distinguish the blocking parts 320 and 330 and the matching part 350 from each other, and may be simply formed as a conductive line. A matching part 350 may be formed between the connecting part 340 and the feeding part 360, and another blocking part 320 and 330 may be formed between the connecting part 340 and the feeding part 360. . That is, the first blocking part 320 may be formed between the contact parts 242a and the connecting part 340, and the second blocking part 330 may be formed between the connecting part 340 and the power feeding part 360. As described above, the first blocking unit 320 is formed to mismatch the impedance in the third frequency band between the first frequency and the second frequency such that the antenna device multi-resonates at the first frequency and the second frequency. The second blocking unit 330 may be formed to improve antenna characteristics at the first frequency by mismatching impedance in a lower frequency band than the first frequency.
The matching unit 350 may be implemented as a series device or a shunt device. In the case of a series device, a reactance value, which is an imaginary part of impedance, may be changed. For example, since the inductor increases the reactance and the capacitor lowers the reactance, the impedance of a specific frequency band may change. Alternatively, in the case of the shunt element, a resistance value, which is a real part of impedance, may be changed. For example, the inductor increases the resistance value and the capacitor decreases the resistance value so that the impedance of a specific frequency band may be changed.
The feeder 360 may be configured by combining a balun, an ideal phase, a divider, an attenuator, an amplifier, and the like.
In the present exemplary embodiment, the flexible circuit board 242 is one example of the substrate, but the substrate may be the flexible circuit board 242 or the circuit board 250. The substrate may be a dielectric substrate or a semiconductor substrate, and ground may be formed on one surface of the substrate, or one layer may be ground when the substrate is a multilayer substrate. One end of the conductive member 310 may be grounded to ground according to the antenna type.
The transmission / reception circuit unit 370 may be formed on one surface of the circuit board 250. The transmission / reception circuit unit 370 is connected to the power supply unit 360. The transmission / reception circuit unit 370 feeds the conductive member 310 through the power supply unit 360 and the matching unit 350, thereby transmitting a wireless signal or matching the received wireless signal received by the conductive member 310 to the matching unit ( It is configured to receive the input through the 350 and the power feeding unit 360 to execute predetermined reception processing such as frequency conversion processing and demodulation processing.
As shown in FIG. 6E, the antenna characteristic of FIG. 6F may be exhibited by configuring the antenna device. As shown in FIG. 6F, the mobile terminal according to the present invention exhibits satisfactory antenna efficiency in the low frequency band (about 0.8 GHz) and the high frequency band (1.7 to 2.4 GHz), respectively. That is, it can be seen that the antenna device according to the embodiment of the present invention has a voltage standing wave ratio of 3: 1 or less in the low frequency band (about 0.8 GHz) and the high frequency band (1.7 to 2.4 GHz), respectively, and has a sufficient bandwidth in the high frequency band. .
7A to 7C are diagrams showing the results of simulation of current distribution when the antenna device shown in FIG. 6A operates at 900 MHz (FIG. 7A), 1800 MHz (FIG. 7B), and 2100 MHz (FIG. 7C), respectively. . The magnitude of the arrow is proportional to the strength of the current. As shown, since the conductive member 310 constituting the antenna device according to the embodiment of the present invention does not have a branch, the other end of the main radiation of the radio signal occurs at one end of the conductive member 310 which is fed and grounded. Current flows in only one direction. If the current flow is simple, the electric or magnetic field formed around the antenna has a simple pattern, thereby improving the specific absorption rate (SAR) of the user. That is, there is no sudden change of current along the conductive member 310.
8A to 8C are diagrams showing examples of configuring an antenna device according to the first embodiment of the present invention.
Referring to FIG. 8A, the antenna device includes a conductive member 310, a blocking unit 320, a connecting unit 340, a matching unit 350, and a power feeding unit 360. Although not shown, the conductive member 310 is grounded to the ground of the substrate. As described above, the conductive member 310 is formed without a branch. The blocking part 320 is formed to electrically connect the conductive member 310 and the connection part 340 with each other. The matching part 350 and the power feeding part 360 may be formed between the connection part 340 and the substrate.
Referring to FIG. 8B, the antenna device includes a conductive member 310, a first blocking unit 320, a connecting unit 340, a second blocking unit 330, a matching unit 350, and a power feeding unit 360. . Although not shown, the conductive member 310 is grounded to the ground of the substrate. As described above, the conductive member 310 is formed without a branch. The first blocking part 320 is formed to electrically connect the conductive member 310 and the connection part 340 to each other. The second blocking unit 330, the matching unit 350, and the power feeding unit 360 may be formed between the connection unit 340 and the substrate.
The first blocking unit 320 is formed to block radio signals between a first frequency of low frequency and a second frequency of high frequency, and the second blocking unit 330 is a radio signal of a frequency band lower than the first frequency. It may be configured to block radio signals of a frequency band higher than two frequencies. The second blocking unit 330 is configured to block radio signals of a frequency band lower than the first frequency or to block radio signals of a frequency band higher than the second frequency. It can be made by changing the value of the capacitor or inductor.
Referring to FIG. 8C, the antenna device includes a conductive member 310, a first blocking part 320, a connecting part 340, a second blocking part 330, a matching part 350, and a power feeding part 360. . Although not shown, the conductive member 310 is grounded to the ground of the substrate. As described above, the conductive member 310 is formed without a branch. The first blocking unit 320 and the second blocking unit 330 are formed to electrically connect the conductive member 310 and the connecting unit 340 to each other. The matching part 350 and the power feeding part 360 may be formed between the connection part 340 and the substrate.
The first blocking unit 320 is formed to block radio signals between a first frequency of low frequency and a second frequency of high frequency, and the second blocking unit 330 is a radio signal of a frequency band lower than the first frequency. It may be configured to block radio signals of a frequency band higher than two frequencies. The second blocking unit 330 is configured to block radio signals of a frequency band lower than the first frequency or to block radio signals of a frequency band higher than the second frequency. It can be made by changing the value of the capacitor or inductor.
9A to 9C are diagrams showing examples of configuring an antenna device according to a second embodiment of the present invention.
Referring to FIG. 9A, the antenna device includes a conductive member 410, a blocking unit 420, a connection unit 440, a matching unit 450, and a power feeding unit 460. Although not shown, the conductive member 410 is grounded to the ground of the substrate. The conductive member 410 may have a branch. This branch may be formed so that the branch of the current flowing along the conductive member 410 is minimized. The length of the branch can be formed with a length corresponding to the frequency of further resonance.
The blocking part 420 is formed to electrically connect the conductive member 410 and the connection part 440 with each other. The matching part 450 and the power feeding part 460 may be formed between the connection part 440 and the substrate.
Referring to FIG. 9B, the antenna device includes a conductive member 410, a first blocking part 420, a connecting part 440, a second blocking part 430, a matching part 450, and a power feeding part 460. . Although not shown, the conductive member 410 is grounded to the ground of the substrate. The conductive member 410 may have a branch. This branch may be formed so that the branch of the current flowing along the conductive member 410 is minimized. The length of the branch can be formed with a length corresponding to the frequency of further resonance. The first blocking part 420 and the second blocking part 430 are formed to electrically connect the conductive member 410 and the connection part 440 with each other. The matching part 450 and the power feeding part 460 may be formed between the connection part 440 and the substrate.
The first blocking unit 420 is formed to block radio signals between a first frequency of low frequency and a second frequency of high frequency, and the second blocking unit 430 is a radio signal of a frequency band lower than the first frequency. It may be configured to block radio signals of a frequency band higher than two frequencies. The second blocking unit 430 is configured to block radio signals of a frequency band lower than the first frequency or to block radio signals of a frequency band higher than the second frequency. It can be made by changing the value of the capacitor or inductor.
Referring to FIG. 8C, the antenna device includes a conductive member 410, a first blocking part 420, a connection part 440, a second blocking part 430, a matching part 450, and a power feeding part 460. . Although not shown, the conductive member 410 is grounded to the ground of the substrate. The conductive member 410 may have a branch. This branch may be formed so that the branch of the current flowing along the conductive member 410 is minimized. The length of the branch can be formed with a length corresponding to the frequency of further resonance. The first blocking part 420 is formed to electrically connect the conductive member 410 and the connection part 440 with each other. The matching part 450 and the power feeding part 460 may be formed between the connection part 440 and the substrate. The second blocking unit 430 may be formed between the connecting unit 440 and the power feeding unit 460.
The first blocking unit 420 is formed to block radio signals between a first frequency of low frequency and a second frequency of high frequency, and the second blocking unit 430 is a radio signal of a frequency band lower than the first frequency. It may be configured to block radio signals of a frequency band higher than two frequencies. The second blocking unit 430 is configured to block radio signals of a frequency band lower than the first frequency or to block radio signals of a frequency band higher than the second frequency. It can be made by changing the value of the capacitor or inductor.
As described above, the mobile terminal according to the embodiments of the present invention may include the blocking units 320 and 330 to improve antenna characteristics of frequencies adjacent to the blocking frequency band. In addition, due to the frequency sliding effect, a shorter conductive member 310 may be used to form an antenna that resonates at a lower frequency. And, the body effect can be reduced due to the presence of the cutoff frequency band.
In addition, when the conductive member 310 is formed without a branch, the electromagnetic absorption rate of the user may be lowered.
The above-described mobile terminal is not limited to the configuration and method of the above-described embodiments, but the embodiments may be configured by selectively combining all or some of the embodiments so that various modifications can be made. It may be.
