Mobile device having camera

Abstract

This mobile device comprises: a housing; a camera module installed on one surface of the housing; a built-in antenna installed inside the housing; an external antenna installed, adjacent to the built-in antenna, on the outside of the housing and spaced a predetermined distance apart from the one surface of the housing; and an antenna controller which is installed on the outside of the housing and formed to be capable of selectively electromagnetically coupling the external antenna and the built-in antenna. When the built-in antenna is not electromagnetically coupled to the external antenna, electromagnetic waves radiated from the built-in antenna form a first antenna radiation pattern. When the built-in antenna is electromagnetically coupled to the external antenna, electromagnetic waves radiated from the built-in antenna form a second antenna radiation pattern.

Description

mobile devices with cameras

[0001] The present disclosure relates to a mobile device, and more particularly, to a mobile device having a camera.

[0002] Typically, mobile devices use wireless technology to communicate and sense their surroundings.

[0003] For example, mobile devices may use various wireless communication technologies, such as Bluetooth, WiFi, and ultra-wideband (UWB) for wireless communication. To achieve this, the mobile device may include an antenna compatible with the wireless communication technology being used.

[0004] Additionally, the mobile device may be configured to use its antenna to locate nearby devices equipped with tags.

[0005] A mobile device may include a camera. A mobile device including a camera can measure the distance to a subject, focus, and perform real-time image processing.

[0006] Currently, mobile devices use optical distance sensors to measure the distance to an object. Optical distance sensors are designed to measure the distance to an object using infrared or laser light.

[0007] Ultra-wideband communications built into mobile devices are being used for the Internet of Things (IoT).

[0008] A mobile device according to one or more embodiments of the present disclosure may include: a housing; a camera module installed on one surface of the housing; a built-in antenna installed inside the housing; an external antenna installed on an outer side of the housing adjacent to the built-in antenna and spaced apart from one surface of the housing by a predetermined distance; and an antenna adjuster installed on the outer side of the housing and configured to selectively electromagnetically couple the external antenna with the built-in antenna. When the built-in antenna is not electromagnetically coupled with the external antenna, an electromagnetic wave radiated from the built-in antenna forms a first antenna radiation pattern. When the built-in antenna is electromagnetically coupled with the external antenna, an electromagnetic wave radiated from the built-in antenna forms a second antenna radiation pattern.

[0009] According to one or more embodiments of the present disclosure, the camera module may be configured to operate in a first operating mode and a second operating mode. When the built-in antenna is not electromagnetically coupled with the external antenna, the camera module operates in the first operating mode. When the built-in antenna is electromagnetically coupled with the external antenna, the camera module operates in the second operating mode.

[0010] According to one or more embodiments of the present disclosure, the mobile device may further include a case that accommodates the housing. The external antenna and the antenna adjuster may be installed in the case.

[0011] According to one or more embodiments of the present disclosure, the external antenna may be formed as a passive antenna.

[0012] According to one or more embodiments of the present disclosure, the antenna adjuster may be configured to position the external antenna at a predetermined distance from one surface of the housing and in one of a first position and a second position. The first position is a position where the external antenna is not electromagnetically coupled with the internal antenna. The second position is a position where the external antenna is electromagnetically coupled with the internal antenna.

[0013] According to one or more embodiments of the present disclosure, the mobile device may further include an antenna position detection unit installed in the housing and configured to detect the position of the external antenna. The camera module may recognize the position of the external antenna using a signal transmitted from the antenna position detection unit.

[0014] According to one or more embodiments of the present disclosure, the antenna position detection unit may include a magnetometer installed in the housing. The magnetometer may be configured to detect a permanent magnet installed in the external antenna.

[0015] According to one or more embodiments of the present disclosure, the external antenna may be formed as an active antenna. The mobile device may include a fixing member that separates the external antenna from one surface of the housing by a predetermined distance and fixes the external antenna to one surface of the housing.

[0016] According to one or more embodiments of the present disclosure, the antenna controller may include: a power supply electrically connected to the external antenna; and a power switch installed between the external antenna and the power supply, the power supply configured to selectively supply electricity to the external antenna. When the power switch is turned on and power is supplied from the power supply to the external antenna, the external antenna is electromagnetically coupled with the built-in antenna, and electromagnetic waves radiated from the built-in antenna form the second antenna radiation pattern. When the power switch is turned off and power is not supplied to the external antenna, the external antenna is not electromagnetically coupled with the built-in antenna, and electromagnetic waves radiated from the built-in antenna form the first antenna radiation pattern.

[0017] According to one or more embodiments of the present disclosure, the external antenna may include four transmission lines arranged in a square shape; and a plurality of switches installed between the four transmission lines and selectively dividing the four transmission lines into two or four parts.

[0018] According to one or more embodiments of the present disclosure, the mobile device may further include a distance measuring unit configured to measure a distance to a subject captured by the camera module using electromagnetic waves radiated from the built-in antenna.

[0019] According to one or more embodiments of the present disclosure, the external antenna and the antenna adjuster may be detachably installed on the rear of the housing.

[0020] According to one or more embodiments of the present disclosure, the gap (G) between the housing and the external antenna may be 1 / 10 to 1 / 4 of the wavelength of the electromagnetic wave radiated from the built-in antenna.

[0021] According to one or more embodiments of the present disclosure, the built-in antenna may be configured to transmit or receive electromagnetic waves of ultra-wideband (UWB).

[0022] According to one or more embodiments of the present disclosure, the internal antenna may include a transmitting antenna and a receiving antenna. The external antenna is installed adjacent to one of the transmitting antenna and the receiving antenna.

[0023] A method for measuring a distance to a subject by a mobile device having a built-in antenna, an external antenna, and a camera according to one or more embodiments of the present disclosure may include the steps of: determining whether the external antenna is activated; radiating an electromagnetic wave with the built-in antenna if the external antenna is activated; and receiving the electromagnetic wave reflected from the subject to calculate a distance to the subject.

[0024] According to one or more embodiments of the present disclosure, a method for measuring a distance of a mobile device is provided such that when the external antenna is activated, the built-in antenna is electromagnetically coupled with the external antenna so that a first antenna radiation pattern can be changed to a second antenna radiation pattern.

[0025] According to one or more embodiments of the present disclosure, the mobile device may include an antenna controller that activates the external antenna.

[0026] The above-described and other aspects, features, and advantages of the embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings. In the accompanying drawings:

[0027] FIG. 1 is a diagram illustrating a mobile device according to one or more embodiments of the present disclosure.

[0028] FIG. 2 is a block diagram of a mobile device according to one or more embodiments of the present disclosure.

[0029] FIG. 3 is a diagram illustrating a mobile device according to one or more embodiments of the present disclosure including a case.

[0030] FIG. 4 is a cross-sectional view showing the mobile device of FIG. 3 taken along line AA according to one or more embodiments of the present disclosure.

[0031] FIG. 5 is a perspective view showing a case of a mobile device according to one or more embodiments of the present disclosure.

[0032] FIG. 6 is a rear perspective view of the case of the mobile device of FIG. 5 according to one or more embodiments of the present disclosure.

[0033] FIG. 7 is a diagram illustrating a mobile device according to one or more embodiments of the present disclosure including a case.

[0034] FIG. 8 is a diagram showing a first antenna radiation pattern and a second antenna radiation pattern of a mobile device according to one or more embodiments of the present disclosure.

[0035] FIG. 9 is a diagram illustrating an external antenna and antenna controller of a mobile device according to one or more embodiments of the present disclosure.

[0036] FIG. 10 is a diagram illustrating an external antenna and antenna controller of a mobile device according to one or more embodiments of the present disclosure.

[0037] FIG. 11 is a diagram illustrating an external antenna and antenna controller of a mobile device according to one or more embodiments of the present disclosure.

[0038] FIG. 12 is a drawing showing a state in which the external antenna of the mobile device of FIG. 11 is located at a second position according to one or more embodiments of the present disclosure.

[0039] FIG. 13 is a diagram illustrating a mobile device according to one or more embodiments of the present disclosure including a case.

[0040] FIG. 14 is a cross-sectional view showing the mobile device of FIG. 13 taken along line BB according to one or more embodiments of the present disclosure.

[0041] FIG. 15 is a diagram illustrating a mobile device according to one or more embodiments of the present disclosure including a case.

[0042] FIG. 16 is a cross-sectional view showing the mobile device of FIG. 15 cut along line CC according to one or more embodiments of the present disclosure.

[0043] FIG. 17 is a perspective view illustrating a mobile device according to one or more embodiments of the present disclosure including a case.

[0044] FIG. 18A is a diagram illustrating a mobile device according to one or more embodiments of the present disclosure.

[0045] FIG. 18b is a plan view illustrating the mobile device of FIG. 18a according to one or more embodiments of the present disclosure.

[0046] FIG. 19 is a diagram illustrating a mobile device according to one or more embodiments of the present disclosure.

[0047] FIG. 20 is a flowchart illustrating a method of capturing an object using a mobile device according to one or more embodiments of the present disclosure.

[0048] FIG. 21 is a diagram illustrating a mobile device according to one or more embodiments of the present disclosure.

[0049] FIG. 22 is a diagram illustrating a mobile device and an external antenna according to one or more embodiments of the present disclosure.

[0050] The present embodiments may be modified and have various embodiments. Specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the scope to specific embodiments, but should be understood to encompass various modifications, equivalents, and / or alternatives of the embodiments of the present disclosure. In connection with the description of the drawings, similar reference numerals may be used for similar components.

[0051] In describing the present disclosure, if it is determined that a specific description of a related known function or configuration may unnecessarily obscure the gist of the present disclosure, a detailed description thereof will be omitted.

[0052] Additionally, the following embodiments may be modified in various other forms, and the scope of the technical concepts of the present disclosure is not limited to the following embodiments. Rather, these embodiments are provided to further faithfully and completely convey the technical concepts of the present disclosure to those skilled in the art.

[0053] The terminology used in this disclosure is for the purpose of describing specific embodiments only and is not intended to limit the scope of the rights. Singular expressions include plural expressions unless the context clearly dictates otherwise.

[0054] In this disclosure, expressions such as “has,” “can have,” “includes,” or “may include” indicate the presence of a corresponding feature (e.g., a component such as a number, function, operation, or part), and do not exclude the presence of additional features.

[0055] In this disclosure, expressions such as “A or B,” “at least one of A and / or B,” or “one or more of A or / and B” can include all possible combinations of the listed items. For example, “A or B,” “at least one of A and B,” or “at least one of A or B” can all refer to (1) including at least one A, (2) including at least one B, or (3) including both at least one A and at least one B.

[0056] The expressions “first,” “second,” “first,” or “second,” etc., used in this disclosure can describe various components, regardless of order and / or importance, and are only used to distinguish one component from another, but do not limit the components.

[0057] In addition, terms such as 'front end', 'rear end', 'upper end', 'lower end', 'top end', and 'bottom end' used in the present disclosure are defined based on the drawings, and the shape and position of each component are not limited by these terms.

[0058] The present disclosure aims to provide a mobile device having a camera capable of measuring a distance to a subject using a built-in antenna and an external antenna.

[0059] Hereinafter, a mobile device (1) equipped with a camera according to one or more embodiments of the present disclosure will be described in detail with reference to the attached drawings.

[0060] FIG. 1 is a drawing showing a mobile device (1) according to one or more embodiments of the present disclosure. FIG. 2 is a block diagram of a mobile device (1) according to one or more embodiments of the present disclosure.

[0061] Referring to FIGS. 1 and 2, a mobile device (1) according to one or more embodiments of the present disclosure may include a housing (10), a camera module (20), a built-in antenna (30), an external antenna (40), and an antenna adjuster (50).

[0062] The housing (10) may be formed in a roughly rectangular parallelepiped shape. The housing (10) may include a first surface (10a), a second surface (10b) facing the first surface (10a), and four side surfaces (10c) surrounding a space between the first surface (10a) and the second surface (10b). A display (11) may be installed on the first surface (10a). The first surface (10a) on which the display (11) is installed may be referred to as the front surface of the housing (10). A camera module (20) may be installed on the second surface (10b). The second surface (10b) on which the camera module (20) is installed may be referred to as the rear surface of the housing (10).

[0063] The camera module (20) is formed to be capable of capturing still images and moving images. The camera module (20) may be installed on one surface of the housing (10). For example, the camera module (20) may be installed on the second surface (10b) of the housing (10). The camera module (20) may include a plurality of cameras (21). The plurality of cameras (21) may be installed on the second surface (10b) of the housing (10). The plurality of cameras (21) may be formed to have different fields of view (FoV). For example, the plurality of cameras (21) may include a standard camera, a wide-angle camera, and a telephoto camera.

[0064] In the present embodiment, the camera module (20) includes three cameras (21). However, the number of cameras (21) is not limited thereto. The camera module (20) may include one, two, or four or more cameras (21).

[0065] The camera module (20) may include an image sensor. The camera module (20) may include a plurality of image sensors corresponding to a plurality of cameras (21).

[0066] The camera module (20) may include a flash (22). The flash (22) may include a light-emitting diode or a xenon lamp.

[0067] The camera module (20) may include an optical distance sensor (23). The optical distance sensor (23) is configured to measure the distance to a subject. The optical distance sensor (23) may be configured to emit infrared or laser light to measure the distance to a subject and output a signal including the measured distance.

[0068] The camera module (20) may be configured to select one of a plurality of cameras (21) based on the distance to the subject. For example, the camera module (20) may receive the distance to the subject from the optical distance sensor (23), select one camera (21) most appropriate for capturing the subject at the received distance among the plurality of cameras (21), and automatically adjust the focus to capture the subject.

[0069] The camera module (20) can be configured to operate in a first operating mode and a second operating mode. The first operating mode refers to a mode in which the camera module (20) captures a subject at a close distance. The second operating mode refers to a mode in which the camera module (20) captures a subject at a long distance.

[0070] The built-in antenna (30) may be installed inside the housing (10). The built-in antenna (30) may be installed adjacent to or in contact with the inner surface of the second surface (10b) of the housing (10) on which the camera (21) is installed. The built-in antenna (30) may be installed adjacent to the camera module (20) on the second surface (10b) of the housing (10). The built-in antenna (30) may be formed to be capable of emitting or receiving ultra-wide band (UWB) electromagnetic waves.

[0071] The built-in antenna (30) may include a transmitting antenna (31) and a receiving antenna (32). The transmitting antenna (31) may be configured to radiate electromagnetic waves. The receiving antenna (32) may be configured to receive electromagnetic waves. For example, the built-in antenna (30) may include a transmitting antenna (31) that radiates ultra-wideband electromagnetic waves and a receiving antenna (32) that can receive ultra-wideband electromagnetic waves. As another example, the built-in antenna (30) may be configured as a transmitting / receiving antenna that can transmit and receive ultra-wideband electromagnetic waves.

[0072] The electromagnetic waves radiated from the built-in antenna (30) can form a certain radiation pattern. The radiation pattern formed by the electromagnetic waves radiated from the built-in antenna (30) is called a first antenna radiation pattern or a first antenna diagram (see FIG. 8).

[0073] A mobile device (1) may include a display (11), an input unit (12), an audio output unit (13), an audio unit (14), a sensor unit (15), a battery (16), an interface (17), a communication unit (92), a distance measurement unit (93), a processor (90), and a memory (91).

[0074] The display (11) can be configured to output text and images. Still images or moving images captured by the camera module (20) can be output through the display (11). The display (11) can include a touch sensor and a pressure sensor.

[0075] The input unit (12) is formed to receive commands or data for controlling the mobile device (1) from the user. For example, the input unit (12) may include a microphone, a mouse, a keyboard, keys or buttons, a stylus pen, etc.

[0076] The audio output unit (13) may be configured to output audio signals to the outside of the mobile device (1). For example, the audio output unit (13) may include a speaker or a receiver. The speaker may be used for general purposes, such as multimedia playback or recording playback. The receiver may be used to receive incoming calls. The receiver may be implemented separately from the speaker or as part of the speaker.

[0077] The audio unit (14) can be configured to convert sound into an electrical signal, or vice versa, to convert an electrical signal into sound. For example, the audio unit (14) can acquire sound through the input unit (12) or output sound through the audio output unit (13).

[0078] The sensor unit (15) may be configured to detect the operating status of the mobile device (1) or the external environment and generate an electrical signal or data value corresponding to the detected status. For example, the sensor unit (15) may include a gyro sensor, a pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared sensor, a biometric sensor, a temperature sensor, a humidity sensor, an illuminance sensor, and the like.

[0079] The interface (17) is formed to enable a wired or wireless connection of the mobile device (1) with an external electronic device. For example, the interface (17) may include a high definition multimedia interface (HDMI), a universal serial bus (USB), an SD card, an audio interface, etc.

[0080] The battery (16) may be configured to supply power to at least one component of the mobile device (1). For example, the battery (16) may include a non-rechargeable primary battery, a rechargeable secondary battery, etc.

[0081] The communication unit (92) is configured to enable the mobile device (1) to communicate with an external electronic device via wired or wireless means. For example, the communication unit (92) can be connected to an external electronic device via various mobile communication methods such as Bluetooth, WiFi, 4G, and 5G.

[0082] The communication unit (92) can transmit data to or receive data from an external electronic device via the built-in antenna (30). If the built-in antenna (30) is formed as an ultra-wideband antenna capable of transmitting or receiving ultra-wideband electromagnetic waves, the communication unit (92) can transmit or receive a large amount of data.

[0083] The distance measuring unit (93) may be configured to measure the distance to a subject captured by the camera module (20) using electromagnetic waves emitted from the built-in antenna (30). The electromagnetic waves emitted from the built-in antenna (30) are reflected by the subject and become reflected waves. The distance measuring unit (93) may be configured to receive the reflected waves reflected from the subject and calculate the distance to the subject.

[0084] As another example, the distance measuring unit (93) may be formed as a part of the processor (90). In this case, the processor (90) may calculate the distance to the subject using electromagnetic waves emitted from the built-in antenna (30) and reflected from the subject.

[0085] The processor (90) can control at least one component of the mobile device (1), for example, a hardware or software component. The processor (90) can perform various data processing or operations.

[0086] The memory (92) can store various data used by programs such as an operating system, applications, etc. that control the mobile device (1) and at least one component of the mobile device (1). The memory (92) can include volatile memory or non-volatile memory.

[0087] The mobile device (1) may include an antenna position detection unit (94). The antenna position detection unit (94) may be configured to detect the position of an external antenna (40). For example, the antenna position detection unit (94) may be configured to detect whether the external antenna (40) is in a first position or a second position.

[0088] Referring to FIG. 2, an external antenna (40) and an antenna adjuster (50) can be installed on the outside of the mobile device (1).

[0089] The external antenna (40) is formed so as to be able to change the radiation pattern of the electromagnetic wave radiated from the internal antenna (30), i.e., the first antenna radiation pattern or first antenna diagram of the internal antenna (30). The radiation pattern of the electromagnetic wave radiated from the internal antenna (30) changed by the external antenna (40) is called the second antenna radiation pattern or second antenna diagram.

[0090] The external antenna (40) may be installed horizontally adjacent to the built-in antenna (30) on the outside of the housing (10) (XY plane of FIG. 3). The external antenna (40) may be installed horizontally adjacent to the camera module (20) on the outside of the housing (10). The external antenna (40) may be installed on the outside of the housing (10) so as to be spaced apart from the built-in antenna (30) by a certain distance in the vertical direction (Z direction of FIGS. 3 and 4). For example, the external antenna (40) may be installed so that the gap (G) between the rear surface (10b) of the housing (10) and the external antenna (40) is 1 / 10 to 1 / 4 of the wavelength of the electromagnetic wave radiated from the built-in antenna (30).

[0091] Here, the gap (G) between the rear surface (10b) of the housing (10) and the external antenna (40) refers to one end or one surface of the external antenna (40) that is positioned closest to the rear surface (10b) of the housing (10) when the external antenna (40) is electromagnetically coupled with the built-in antenna (30). For example, in FIG. 4, the gap (G) between the rear surface (10b) of the housing (10) and the external antenna (40) refers to the distance between the rear surface (10b) of the housing (10) and one surface of the external antenna (40) attached to the fixing member (42).

[0092] For example, an external antenna (40) can be installed on the rear (60b) of the case (60) in which the housing (10) is accommodated.

[0093] The antenna adjuster (50) may be installed on the outside of the housing (10). For example, the antenna adjuster (50) may be installed on the case (60). The antenna adjuster (50) may be installed on the rear side (60b) of the case (60) together with the external antenna (40).

[0094] The antenna adjuster (50) is configured to selectively electromagnetically couple the external antenna (40) with the internal antenna (30). When the internal antenna (30) is electromagnetically coupled with the external antenna (40), the antenna radiation pattern of the internal antenna (30) can be changed.

[0095] For example, if the built-in antenna (30) is not electromagnetically coupled with the external antenna (40) by the antenna adjuster (50), the built-in antenna (30) can form a first antenna radiation pattern. However, if the external antenna (40) is electromagnetically coupled with the built-in antenna (30) by the antenna adjuster (50), the built-in antenna (30) can form a second antenna radiation pattern. The second antenna radiation pattern is different from the first antenna radiation pattern. For example, the width of the major lobe of the second antenna radiation pattern can be formed to be narrower than the width of the major lobe of the first antenna radiation pattern.

[0096] In other words, when the built-in antenna (30) is electromagnetically coupled with the external antenna (40), the level of electromagnetic waves emitted from the built-in antenna (30) may increase compared to when the external antenna (40) is not electromagnetically coupled. Therefore, when the built-in antenna (30) and the external antenna (40) are electromagnetically coupled, the direct wave (LoS, Line of Sight) may increase and the indirect wave (NLoS, Non-Line of Sight) may decrease.

[0097] The antenna controller (50) can be formed electrically or mechanically, as described later.

[0098] FIG. 3 is a drawing showing a mobile device (1) according to one or more embodiments of the present disclosure including a case (60). FIG. 4 is a cross-sectional view showing the mobile device (1) of FIG. 3 taken along line AA. FIG. 5 is a perspective view showing a case (60) of a mobile device (1) according to one or more embodiments of the present disclosure. FIG. 6 is a rear perspective view of the case (60) of the mobile device (1) of FIG. 5.

[0099] Referring to FIGS. 3 and 4, a mobile device (1) according to one or more embodiments of the present disclosure may include a case (60).

[0100] The mobile device (1) may include a camera module (20) installed on the rear side (10b) of the housing (10). The camera module (20) may include three cameras (21). The camera module (20) may include an optical distance sensor (23) and a flash (22). The optical distance sensor (23) and the flash (22) may be installed adjacent to the three cameras (21) on the rear side of the housing (10).

[0101] The mobile device (1) may include a built-in antenna (30). The built-in antenna (30) is installed inside the housing (10). The built-in antenna (30) may be installed adjacent to or in contact with the inner surface of the rear surface (10b) of the housing (10). The built-in antenna (30) may be installed adjacent to the camera module (20).

[0102] The built-in antenna (30) may include a transmitting antenna (31) and a receiving antenna (32). The built-in antenna (30) may include a transmitting antenna (31) that transmits ultra-wideband electromagnetic waves and a receiving antenna (32) that can receive ultra-wideband electromagnetic waves.

[0103] The mobile device (1) can be accommodated in a case (60). That is, the housing (10) of the mobile device (1) can be accommodated in the case (60).

[0104] The case (60) may be formed in a shape corresponding to the housing (10) of the mobile device (1). For example, when the housing (10) is formed in a substantially rectangular flat plate shape, the case (60) is formed so as to be able to accommodate the housing (10) in a rectangular flat plate shape. That is, the case (60) may be formed to surround the rear (10b) and side (10c) of the housing (10). The front (60a) of the case (60) may be opened to expose the display (11) of the mobile device (1). For example, the case (60) may be formed in a substantially rectangular box shape having a height corresponding to the thickness of the housing (10).

[0105] The case (60) may include an external antenna (40) and an antenna adjuster (50). The external antenna (40) and the antenna adjuster (50) may be provided on the rear surface (60b) of the case (60).

[0106] Referring to FIGS. 3 to 6, the case (60) may be formed in a box shape having a cross-section that is approximately rectangular. That is, the case (60) may include a rear surface (60b) and four side surfaces (60c). The four side surfaces (60c) may be formed to extend vertically from the rear surface (60b). The front surface (60a) of the case (60) is formed with an opening that communicates with the internal space. The mobile device (1) may be accommodated in the internal space of the case (60) through the opening of the front surface (60a) of the case (60).

[0107] When the mobile device (1) is accommodated in the case (60), the rear surface (10b) and four side surfaces (10c) of the housing (10) can be in close contact with the rear surface (60b) and four side surfaces (60c) of the case (60). The display (11) of the mobile device (1) can be exposed through the opening in the front surface (60a) of the case (60).

[0108] The case (60) may include a camera hole (61) through which the camera module (20) is exposed. The camera hole (61) may be formed on the rear surface (60b) of the case (60). Through the camera hole (61), a plurality of cameras (21), an optical distance sensor (23), and a flash (22) of the camera module (20) may be exposed.

[0109] The external antenna (40) can be installed on the rear surface (60b) of the case (60). The external antenna (40) is installed so as to be spaced apart from the rear surface (10b) of the housing (10) of the mobile device (1) by a certain distance in the vertical direction (Z direction). That is, a certain gap (G) exists between the external antenna (40) and the rear surface (10b) of the housing (10). Accordingly, the external antenna (40) is spaced apart from the built-in antenna (30) installed on the inside of the rear surface (10b) of the housing (10) by a certain gap (G) in the vertical direction.

[0110] Here, the gap (G) between the rear surface (10b) of the housing (10) and the external antenna (40) refers to one end or one surface of the external antenna (40) that is positioned closest to the rear surface (10b) of the housing (10) when the external antenna (40) is electromagnetically coupled with the built-in antenna (30). In FIG. 4, the predetermined gap (G) refers to the distance between the rear surface (10b) of the housing (10) and one surface of the external antenna (40) attached to the fixing member (42).

[0111] If a certain gap (G) exists between the external antenna (40) and the rear surface (10b) of the housing (10), the external antenna (40) can be electromagnetically coupled with the built-in antenna (30) to change the antenna radiation pattern of the built-in antenna (30). Hereinafter, the gap (G) between the rear surface of the housing (10) and the external antenna (40), at which the external antenna (40) can be electromagnetically coupled with the built-in antenna (30) to change the antenna radiation pattern of the built-in antenna (30), is referred to as the antenna installation gap.

[0112] For example, the antenna installation interval (G) between the rear surface (10b) of the housing (10) and the external antenna (40) may be 1 / 10 to 1 / 4 of the wavelength of the electromagnetic wave radiated from the built-in antenna (30).

[0113] For this purpose, a gap maintaining portion may be provided between the rear surface (60b) of the case (60) and the external antenna (40). The gap maintaining portion is formed so that the rear surface (10b) of the housing (10) and the external antenna (40) can maintain the antenna installation gap (G).

[0114] For example, the spacing member may be formed of a fixing member (42) that fixes the external antenna (40) to the case (60). A hook-and-loop fastener or Velcro may be used as the fixing member (42). When the thickness of the fixing member (42) is appropriately selected, when the external antenna (40) is installed on the rear surface (60b) of the case (60) using the fixing member (42), the rear surface (10b) of the housing (10) and the external antenna (40) can maintain the antenna setting gap (G).

[0115] As another example, the rear surface (60b) of the case (60) may be formed as a spacing member. When the external antenna (40) is installed to contact the rear surface (60b) of the case (60), the case (60) may be formed so that the thickness of the rear surface (60b) of the case (60) becomes the antenna installation spacing (G). When the external antenna (40) is installed inside the rear surface (60b) of the case (60), the case (60) may be formed so that the thickness of the case (60) up to the external antenna (40) built into the case (60) becomes the antenna installation spacing (G).

[0116] Various types of antennas can be used as the external antenna (40). The external antenna (40) can be formed as a directional antenna. The mobile device (1) according to the present embodiment uses a quad antenna as the external antenna (40). The quad antenna is fixed to the rear surface (60b) of the case (60) by a fixing member (42).

[0117] When the mobile device (1) is accommodated in the case (60), the external antenna (40) may be installed on the rear surface (60b) of the case (60) so that the external antenna (40) is adjacent to the built-in antenna (30) of the mobile device (1) in the horizontal direction (XY plane). For example, when the mobile device (1) is accommodated in the case (60), the external antenna (40) may be installed on the rear surface (60b) of the case (60) so that the external antenna (40) is positioned between the camera module (20) and the built-in antenna (30).

[0118] The external antenna (40) may be installed on the rear surface (60b) of the case (60) so as to be adjacent to the transmitting antenna (31) of the built-in antenna (30) of the mobile device (1). Then, when the mobile device (1) is accommodated in the case (60), the external antenna (40) is adjacent to the transmitting antenna (31) of the mobile device (1). In this case, the external antenna (40) may be installed at approximately the center of the case (60).

[0119] As another example, the external antenna (40) may be installed on the rear surface (60b) of the case (60) so as to be adjacent to the receiving antenna (32) of the built-in antenna (30) of the mobile device (1). That is, the external antenna (40) may be installed on the case (60) as illustrated in FIG. 7.

[0120] FIG. 7 is a drawing showing a mobile device (1) according to one or more embodiments of the present disclosure including a case (60).

[0121] Referring to Fig. 7, the external antenna (40) is installed adjacent to the upper portion of the rear surface (60b) of the case (60). At this time, the receiving antenna (32) of the built-in antenna (30) of the mobile device (1) is installed on the upper portion of the rear surface (10b) of the housing (10). Accordingly, the external antenna (40) can be positioned between the upper portion of the rear surface (60b) of the case (60) and the receiving antenna (32) of the built-in antenna (30).

[0122] However, the installation location of the external antenna (40) is not limited to this. The installation location of the external antenna (40) may change depending on the location of the built-in antenna (30) installed inside the housing (10) of the mobile device (1).

[0123] The antenna adjuster (50) may be installed on the rear side (60b) of the case (60). For example, the antenna adjuster (50) may be installed inside the fixing member (42). Alternatively, the antenna adjuster (50) may be installed on the rear side (60b) of the case (60) or inside the rear side (60b).

[0124] The antenna adjuster (50) is configured to selectively electromagnetically couple the external antenna (40) with the internal antenna (30). That is, the antenna adjuster (50) can electromagnetically couple the external antenna (40) with the internal antenna (30) or prevent the external antenna (40) from electromagnetically coupling with the internal antenna (30). The antenna adjuster (50) can electrically or mechanically adjust the coupling of the external antenna (40) and the internal antenna (30).

[0125] When the built-in antenna (30) is not electromagnetically coupled with the external antenna (40) by the antenna adjuster (50), the electromagnetic wave radiated from the built-in antenna (30) forms a first antenna radiation pattern. When the built-in antenna (30) is electromagnetically coupled with the external antenna (40) by the antenna adjuster (50), the electromagnetic wave radiated from the built-in antenna (30) forms a second antenna radiation pattern.

[0126] Therefore, when the built-in antenna (30) is not electromagnetically coupled with the external antenna (40), the camera module (20) operates in the first operating mode. When the built-in antenna (30) is electromagnetically coupled with the external antenna (40), the camera module (20) operates in the second operating mode.

[0127] Hereinafter, with reference to FIG. 8, the antenna radiation pattern of a mobile device (1) according to one or more embodiments of the present disclosure will be described in detail.

[0128] FIG. 8 is a drawing showing a first antenna radiation pattern (P1) and a second antenna radiation pattern (P2) of a mobile device (1) according to one or more embodiments of the present disclosure.

[0129] In Fig. 8, the first antenna radiation pattern (P1) represents a case where the built-in antenna (30) is in operation and the external antenna (40) is not electromagnetically coupled with the built-in antenna (30). In other words, the first antenna radiation pattern (P1) represents a case where electromagnetic waves are radiated only from the built-in antenna (30). The first antenna radiation pattern (P1) can be determined depending on the structure and shape of the built-in antenna (30).

[0130] The main lobe of the first antenna radiation pattern (P1) is wide at its maximum width and short in length. Therefore, the built-in antenna (30) can be used to locate and communicate with external electronic devices equipped with tags in the vicinity. Alternatively, the first antenna radiation pattern (P1) can be used to measure the distance to a nearby subject.

[0131] The second antenna radiation pattern (P2) represents a case where the built-in antenna (30) radiates electromagnetic waves while the built-in antenna (30) and the external antenna (40) are electromagnetically coupled. In other words, the second antenna radiation pattern (P2) represents a case where electromagnetic waves are radiated from the coupled built-in antenna (30) and external antenna (40).

[0132] The main lobe of the second antenna radiation pattern (P2) has a maximum width similar to that of the first antenna radiation pattern (P1), but a length longer than that of the main lobe of the first antenna radiation pattern (P2). Therefore, the second antenna radiation pattern (P2) can radiate electromagnetic waves to a longer distance than that of the first antenna radiation pattern (P1) or receive electromagnetic waves radiated from a longer distance than that of the first antenna radiation pattern (P1). Therefore, the second antenna radiation pattern (P2) can be used to measure the distance to a subject located at a long distance.

[0133] For example, when the built-in antenna (30) and the external antenna (40) are electromagnetically coupled, the built-in antenna (30) installed inside the housing (10) can operate as a radiator (driven element) and a reflector, and the external antenna (40) can operate as a director. That is, the fact that the built-in antenna (30) and the external antenna (40) are electromagnetically coupled can mean that the external antenna (40) operates as a director to change the first antenna radiation pattern (P1) of the built-in antenna (30) into the second antenna radiation pattern (P2).

[0134] Accordingly, as in the mobile device (1) according to one or more embodiments of the present disclosure, when an external antenna (40) is used, the antenna radiation pattern of the built-in antenna (30) can be changed. That is, when the built-in antenna (30) is electromagnetically coupled with the external antenna (40), the first antenna radiation pattern (P1) of the built-in antenna (30) can be changed to the second antenna radiation pattern (P2) without changing the mechanical structure of the built-in antenna (30).

[0135] An antenna adjuster (50) is installed in the case (60) and can be formed so as to selectively electromagnetically couple an external antenna (40) with the built-in antenna (30). That is, the antenna adjuster (50) can adjust the external antenna (40) so that the external antenna (40) is electromagnetically coupled with the built-in antenna (30) or not. Accordingly, an electromagnetic wave emitted from the built-in antenna (30) by the antenna adjuster (50) can be formed into one of a first antenna radiation pattern (P1) and a second antenna radiation pattern (P2).

[0136] The antenna adjuster (50) can be configured to electrically or mechanically adjust the coupling of the external antenna (40) and the internal antenna (30).

[0137] First, the electrically formed antenna controller (50) will be described in detail with reference to FIGS. 9 and 10.

[0138] FIG. 9 is a drawing showing an external antenna (40) and an antenna adjuster (50) of a mobile device (1) according to one or more embodiments of the present disclosure.

[0139] Referring to FIG. 9, the antenna controller (50) may include a power supply unit (51) electrically connected to an external antenna (40) and a power switch (52) installed between the external antenna (40) and the power supply unit (51).

[0140] The power switch (52) is configured to enable the power supply device (51) to selectively supply electricity to the external antenna (40). That is, when the power switch (52) is turned on, power from the power supply device (51) is supplied to the external antenna (40), so that the external antenna (40) can function as an antenna. When the power switch (52) is turned off, power from the power supply device (51) is not supplied to the external antenna (40), so that the external antenna (40) does not function as an antenna.

[0141] The power switch (52) may be configured to be manually turned on and off by a user. As another example, the power switch (52) may be configured to be controlled wirelessly. In this case, the user may turn the power switch (52) on and off via a mobile device (1).

[0142] The external antenna (40) is installed at a location where it can be electromagnetically coupled with the built-in antenna (30) of the mobile device (1). For example, the external antenna (40) can be installed horizontally adjacent to the built-in antenna (30).

[0143] The external antenna (40) may include four transmission lines (401, 402, 403, 404) arranged in a square shape and a plurality of switches installed between the four transmission lines (401, 402, 403, 404). The plurality of switches are arranged so as to separate the four transmission lines (401, 402, 403, 404) into two or four parts. The four transmission lines (401, 402, 403, 404) and the plurality of switches may be formed on a printed circuit board.

[0144] The lengths of the four transmission lines (401, 402, 403, 404) can each be formed as 1 / 4λ. Here, λ is the wavelength of the electromagnetic wave emitted from the built-in antenna (30).

[0145] Four transmission lines (401, 402, 403, 404) are arranged in a rectangular shape. That is, the four transmission lines (401, 402, 403, 404) form four sides of the rectangle. Two switches (411, 412) are installed between the four transmission lines (401, 402, 403, 404) to divide the four transmission lines (401, 402, 403, 404) into two parts. For example, the first switch (411) is installed between the first transmission line (401) and the fourth transmission line (404), and the second switch (412) is installed between the second transmission line (402) and the third transmission line (403).

[0146] When the power switch (52) is turned on and power is supplied to the external antenna (40) from the power supply unit (51), two switches (411, 412) are turned on and four transmission lines (401, 402, 403, 404) are connected. Then, the four transmission lines (401, 402, 403, 404) can operate as the external antenna (40). Therefore, when the power switch (52) is turned on, the external antenna (40) is electromagnetically coupled with the built-in antenna (30), so that the first antenna radiation pattern (P1) of the built-in antenna (30) is changed to the second antenna radiation pattern (P2). That is, the electromagnetic wave radiated from the built-in antenna (30) forms the second antenna radiation pattern (P2).

[0147] When the power switch (52) is turned off and power is not supplied to the external antenna (40) from the power supply unit (51), the two switches (411, 412) are turned off and the four transmission lines (401, 402, 403, 404) are divided into two parts. That is, the first transmission line (401) and the second transmission line (402) connected by wires form the first part, and the third transmission line (403) and the fourth transmission line (404) connected by wires form the second part. The first part and the second part are disconnected from each other by the two switches (411, 412). Therefore, when the power switch (52) is turned off and power is not supplied, the four transmission lines (401, 402, 403, 404) do not function as the external antenna (40). Accordingly, when the power switch (52) is turned off, the external antenna (40) is not electromagnetically coupled with the built-in antenna (30), so the first antenna radiation pattern (P1) of the built-in antenna (30) does not change. That is, the electromagnetic wave radiated from the built-in antenna (30) forms the first antenna radiation pattern (P1).

[0148] In the embodiment illustrated in FIG. 9, pin diodes are used as switches (411, 412). However, the switches used in the present disclosure are not limited thereto. For example, the switches may be radio frequency (RF) switches, field effect transistors (FET) transistors, radio frequency (RF) modules, etc.

[0149] The power supply unit (51) is configured to supply power to an external antenna (40). The power supply unit (51) may be configured in various ways as long as it can supply power to the external antenna (40). For example, the power supply unit (51) may be configured as a battery. Alternatively, the power supply unit (51) may be configured to wirelessly receive power from an external power supply unit. For example, the power supply unit (51) may be configured to wirelessly receive power from a mobile device (1) and supply it to the external antenna (40).

[0150] In Fig. 9, + / -Vcontrol represents a voltage regulator that regulates the voltage supplied to the external antenna (40). Additionally, R and L represent a resistance and an inductor.

[0151] FIG. 10 is a drawing showing an external antenna (40) and an antenna adjuster (50) of a mobile device (1) according to one or more embodiments of the present disclosure.

[0152] The external antenna (40) is installed in a location where it can be electromagnetically coupled with the built-in antenna (30) of the mobile device (1).

[0153] Referring to FIG. 10, the external antenna (40) may include four transmission lines (401, 402, 403, 404) arranged in a rectangular shape and four switches (411, 412, 413, 414) installed between the four transmission lines (401, 402, 403, 404). The four switches (411, 412, 413, 414) are arranged so as to divide the four transmission lines (401, 402, 403, 404) into four parts. The four transmission lines (401, 402, 403, 404) and the four switches (411, 412, 413, 414) may be formed on a printed circuit board.

[0154] The lengths of the four transmission lines (401, 402, 403, 404) can each be formed as 1 / 4λ. Here, λ is the wavelength of the electromagnetic wave emitted from the built-in antenna (30).

[0155] Four transmission lines (401, 402, 403, 404) are arranged in a rectangular shape. That is, the four transmission lines (401, 402, 403, 404) form four sides of the rectangle. Four switches (411, 412, 413, 414) are installed between the four transmission lines (401, 402, 403, 404) to divide the four transmission lines (401, 402, 403, 404) into four parts. That is, the first switch (411) is installed between the first transmission line (401) and the fourth transmission line (404), and the second switch (412) is installed between the first transmission line (401) and the second transmission line (402). The third switch (413) is installed between the second transmission line (402) and the third transmission line (403), and the fourth switch (414) is installed between the third transmission line (403) and the fourth transmission line (404).

[0156] When power is supplied to the external antenna (40) from the power supply unit (51), four switches (401, 402, 403, 404) are turned on and four transmission lines (401, 402, 403, 404) are connected. Then, the four transmission lines (401, 402, 403, 404) can operate as the external antenna (40). Therefore, when power is supplied to the external antenna (40), the external antenna (40) is electromagnetically coupled with the built-in antenna (30), so that the first antenna radiation pattern (P1) of the built-in antenna (30) is changed to the second antenna radiation pattern (P2). That is, the electromagnetic wave radiated from the built-in antenna (30) forms the second antenna radiation pattern (P2).

[0157] When power is not supplied to the external antenna (40) from the power supply unit (51), the four switches (411, 412, 413, 414) are turned off, and the four transmission lines (401, 402, 403, 404) are divided into four parts. That is, the first transmission line (401) and the fourth transmission line (404) are disconnected from each other by the first switch (411), and the first transmission line (401) and the second transmission line (402) are disconnected from each other by the second switch (412). The second transmission line (402) and the third transmission line (403) are disconnected from each other by the third switch (413), and the third transmission line (403) and the fourth transmission line (404) are disconnected from each other by the fourth switch (414). Accordingly, the first transmission line (401), the second transmission line (402), the third transmission line (403), and the fourth transmission line (404) form four separate parts.

[0158] If power is not supplied to the external antenna (40) from the power supply (51), the four transmission lines (401, 402, 403, 404) are separated from each other, and thus the four transmission lines (401, 402, 403, 404) do not function as the external antenna (40). Accordingly, if power is not supplied to the external antenna (40), the external antenna (40) is not electromagnetically coupled with the built-in antenna (30), and thus the first antenna radiation pattern (P1) of the built-in antenna (30) does not change. That is, the electromagnetic wave radiated from the built-in antenna (30) forms the first antenna radiation pattern (P1).

[0159] In the embodiment illustrated in FIG. 10, pin diodes are used as switches (411, 412, 413, 414). However, the switches used in the present disclosure are not limited thereto. For example, the switches may be radio frequency (RF) switches, field effect transistors (FETs), radio frequency (RF) modules, etc.

[0160] The antenna controller (50) is configured to wirelessly turn the external antenna (40) on / off. When the external antenna (40) is turned on by the antenna controller (50), the external antenna (40) functions as an antenna, and when the external antenna (40) is turned off, the external antenna (40) does not function as an antenna.

[0161] For example, the antenna controller (50) may include a power supply unit (51), an MCU (Micro Controller Unit) (53), and a wireless communication module (54).

[0162] The power supply unit (51) may be configured to supply power to the external antenna (40). The power supply unit (51) may be configured in various ways as long as it can supply power to the external antenna (40). For example, the power supply unit (51) may be configured as a battery. Alternatively, the power supply unit (51) may be configured to receive power wirelessly from the mobile device (1).

[0163] The MCU (53) may be configured to control the power supply unit (51). The MCU (53) may control the power supply unit (51) to selectively supply power to the external antenna (40). In addition, the MCU (53) may be configured to receive a feedback signal from the external antenna (40). The MCU (53) may recognize whether the external antenna (40) is on or off through the feedback signal.

[0164] The wireless communication module (54) can be formed so as to wirelessly receive an on / off command from an external antenna (40) and transmit it to the MCU (53). For example, the wireless communication module (54) is formed so as to wirelessly receive an on / off command from an external antenna (40) from a mobile device (1).

[0165] The mobile device (1) may include an antenna app capable of controlling an antenna controller (50). A user may transmit an on / off command for an external antenna (40) to a wireless communication module (54) via the antenna app. The antenna app may transmit an external antenna on / off command to the wireless communication module (54) of the antenna controller (50) via the communication unit (92).

[0166] When receiving an external antenna on command from the wireless communication module (54), the MUC (53) controls the power supply unit (51) to supply power to the external antenna (40). When power from the power supply unit (51) is supplied to the external antenna (40), the external antenna (40) functions as an antenna.

[0167] When receiving an external antenna off command from the wireless communication module (54), the MUC (53) controls the power supply unit (51) to prevent power from being supplied to the external antenna (40). If power from the power supply unit (51) is not supplied to the external antenna (40), the external antenna (40) does not function as an antenna.

[0168] Also, in Fig. 10, + / -Vcontrol represents a voltage regulator that regulates the voltage supplied to the external antenna (40), and R and L represent a resistance and an inductor.

[0169] The external antenna (40) illustrated in FIGS. 9 and 10 functions as an antenna that is electromagnetically coupled with the built-in antenna (30) when power is supplied, and does not function as an antenna that is electromagnetically coupled with the built-in antenna (30) when power is not supplied. Such an external antenna (40) may be referred to as an active antenna.

[0170] Next, the mechanically formed antenna adjuster (50) will be described in detail with reference to FIGS. 11 and 12.

[0171] FIG. 11 is a drawing showing an external antenna (40) and an antenna adjuster (50) of a mobile device (1) according to one or more embodiments of the present disclosure. FIG. 12 is a drawing showing a state in which the external antenna (40) of the mobile device (1) of FIG. 11 is located at a second position.

[0172] Referring to FIG. 11, an external antenna (40) can be installed on the rear (60b) of the case (60) using an antenna adjuster (50).

[0173] The antenna adjuster (50) may be formed as an antenna moving device capable of positioning the external antenna (40) at one of the first position (S1) and the second position (S2). In other words, the shape of the external antenna (40) is maintained, and the position of the external antenna (40) may be changed by the antenna adjuster (50), i.e., the antenna moving device. In addition, the external antenna (40) may be spaced apart by a certain distance from the rear surface (10b) of the housing (10) by the antenna moving device. Therefore, if the thickness of the antenna moving device is appropriately selected, the external antenna (40) may maintain the antenna setting distance (G) from the rear surface (10b) of the housing (10).

[0174] The first position (S1) is a position where the external antenna (40) is not electromagnetically coupled with the built-in antenna (30). For example, the first position (S1) may be a position where the external antenna (40) is located at a greater distance from the built-in antenna (30) than the second position (S2). When the external antenna (40) is located at the first position (S1) by the antenna adjuster (50), the external antenna (40) is not electromagnetically coupled with the built-in antenna (30). Therefore, when the external antenna (40) is located at the first position (S1), the electromagnetic wave emitted from the built-in antenna (30) forms the first antenna radiation pattern (P1). That is, the external antenna (40) located at the first position (S1) does not affect the first antenna radiation pattern (P1) of the built-in antenna (30).

[0175] The second position (S2) is a position where the external antenna (40) is electromagnetically coupled with the built-in antenna (30). For example, the second position (S2) may be a position where the external antenna (40) is positioned closer to the built-in antenna (30) than the first position (S1). When the external antenna (40) is positioned at the second position (S2) by the antenna adjuster (50), the external antenna (40) may be electromagnetically coupled with the built-in antenna (30). Therefore, when the external antenna (40) is positioned at the second position (S2), the electromagnetic wave emitted from the built-in antenna (30) forms a second antenna radiation pattern (P2). That is, the external antenna (40) positioned at the second position (S2) affects the built-in antenna (30) to change the first antenna radiation pattern (P1) of the built-in antenna (30) into the second antenna radiation pattern (P2).

[0176] The antenna adjuster (50) may be formed in various structures as long as it can position the external antenna (40) in one of two positions. For example, the antenna adjuster (50) may be formed as a mechanical slider structure capable of shifting the external antenna (40) a certain distance. Specifically, the external antenna (40) may be installed on a movable plate, and the movable plate may be formed to slide relative to a base installed on the rear of the case (60).

[0177] The antenna adjuster (50) may be configured to allow manual movement of the external antenna (40). Alternatively, the antenna adjuster (50) may be configured to allow automatic movement of the external antenna (40). For example, the antenna adjuster (50) may be configured to move a moving plate on which the external antenna (40) is installed using a motor, solenoid, air pressure, or the like.

[0178] The mobile device (1) is configured to be able to recognize the position of the external antenna (40). That is, the mobile device (1) is configured to be able to recognize whether the external antenna (40) is located at a first position (S1) or a second position (S2). To this end, the mobile device (1) may include an antenna position detection unit (94) (see FIG. 2).

[0179] The antenna position detection unit (94) is installed in the housing (10) and is formed to be able to detect the position of the external antenna (40). The processor (90) and the camera module (20) can recognize the position of the external antenna (40) through the antenna position detection unit (94).

[0180] For example, the antenna position detection unit (94) may be formed as a magnetometer. The magnetometer (94) may be installed in the housing (10) of the mobile device (1). The magnetometer (94) may be formed to detect a permanent magnet (45). The permanent magnet (45) may be installed in the external antenna (40). When the external antenna (40) is installed on a moving plate, the permanent magnet (45) may be installed on the moving plate. Accordingly, the permanent magnet (45) may move integrally with the external antenna (40).

[0181] The magnetometer (94) may be configured to output a signal when it detects a permanent magnet (45). For example, the magnetometer (94) may be configured to not output a signal when the external antenna (40) is at the first position (S1), and to output a signal when the external antenna (40) is at the second position (S2).

[0182] The camera module (20) can be configured to recognize the position of the external antenna (40) using a signal transmitted from the antenna position detection unit (94). When the external antenna (40) is at the second position (S2), the camera module (20) can measure the distance to the subject using the built-in antenna (30) and the external antenna (40). The camera module (20) directly measures the distance to the subject using the built-in antenna (30) and the external antenna (40) through the distance measurement unit (93), and can select an appropriate camera among a plurality of cameras (21) according to the distance to the subject to capture the subject.

[0183] When the processor (90) controls the camera module (20), the processor (90) can recognize the position of the external antenna (40) using a signal output from the antenna position detection unit (94). When the external antenna (40) is at the second position (S2), the processor (90) can measure the distance to the subject using the built-in antenna (30) and the external antenna (40). The processor (90) measures the distance to the subject using the built-in antenna (30) and the external antenna (40) through the distance measurement unit (93), and controls the camera module (20) according to the distance to the subject to select an appropriate camera among a plurality of cameras (21) and capture the subject.

[0184] When the external antenna (40) is at the first position (S1), the processor (90) can use the built-in antenna (30) to find an external electronic device with a tag installed. For example, the processor (90) can use ultra-wideband communication to find the external electronic device and communicate with the external electronic device.

[0185] The external antenna (40) illustrated in FIGS. 11 and 12 can function as an antenna that is electromagnetically coupled with the built-in antenna (30) regardless of power supply. Such an antenna can be referred to as a passive antenna.

[0186] In the above, the external antenna (40) is illustrated and described as being formed as a quad antenna, but the external antenna (40) according to one or more embodiments of the present disclosure is not limited thereto. As the external antenna (40), an antenna of various shapes may be used as long as it is a directional antenna.

[0187] A case where a double quad antenna is used as an external antenna (40) is described with reference to FIGS. 13 and 14.

[0188] FIG. 13 is a drawing showing a mobile device (1) according to one or more embodiments of the present disclosure including a case (60). FIG. 14 is a cross-sectional view showing the mobile device (1) of FIG. 13 taken along line BB.

[0189] Referring to FIGS. 13 and 14, a mobile device (1) according to one or more embodiments of the present disclosure may include a case (60).

[0190] The mobile device (1) is the same or similar to the above-described embodiment, so a detailed description is omitted.

[0191] The mobile device (1) can be accommodated in a case (60). The case (60) can be formed in a shape corresponding to the housing (10) of the mobile device (1). Since the case (60) is the same as or similar to the above-described embodiment, a detailed description thereof will be omitted.

[0192] The case (60) may include an external antenna (40) and an antenna controller (50). The external antenna (40) and the antenna controller (50) may be provided on the rear surface (60b) of the case (60). In the present embodiment, the antenna controller (50) is the same as in the above-described embodiment, and only the structure of the external antenna (40) is different.

[0193] An external antenna (40) may be installed on the rear surface (60b) of the case (60). The external antenna (40) is installed so as to be spaced apart from the rear surface (10b) of the housing (10) of the mobile device (1) in a vertical direction by a predetermined distance. The external antenna (40) may be maintained at a predetermined distance (G) from the rear surface (10b) of the housing (10) by an antenna adjuster (50). That is, the antenna adjuster (50) may function as a distance maintainer.

[0194] Here, the gap (G) between the rear surface (10b) of the housing (10) and the external antenna (40) refers to one end or one surface of the external antenna (40) that is positioned closest to the rear surface (10b) of the housing (10) when the external antenna (40) is electromagnetically coupled with the built-in antenna (30). In FIG. 14, the gap (G) between the rear surface (10b) of the housing (10) and the external antenna (40) refers to the distance between the rear surface (10b) of the housing (10) and one surface of the external antenna (40) attached to the antenna adjuster (50).

[0195] The external antenna (40) is formed as a dual quad antenna. The dual quad antenna (40) is a form in which two quad antennas of the above-described embodiment are arranged in parallel.

[0196] When the dual quad antenna (40) is positioned at the first position (S1) by the antenna adjuster (50), the dual quad antenna (40) is not electromagnetically coupled with the built-in antenna (30). Therefore, when the dual quad antenna (40) is positioned at the first position (S1), the electromagnetic wave emitted from the built-in antenna (30) forms the first antenna radiation pattern (P1).

[0197] When the dual quad antenna (40) is positioned at the second position (S2) by the antenna adjuster (50), the dual quad antenna (40) can be electromagnetically coupled with the built-in antenna (30). Therefore, when the dual quad antenna (40) is positioned at the second position (S2), the electromagnetic wave emitted from the built-in antenna (30) forms a second antenna radiation pattern (P2).

[0198] A case where a Yagi antenna is used as an external antenna (40) is described with reference to FIGS. 15 and 16.

[0199] FIG. 15 is a drawing showing a mobile device (1) according to one or more embodiments of the present disclosure including a case (60). FIG. 16 is a cross-sectional view showing the mobile device (1) of FIG. 15 taken along line CC.

[0200] Referring to FIGS. 15 and 16, a mobile device (1) according to one or more embodiments of the present disclosure may include a case (60).

[0201] The mobile device (1) is the same or similar to the above-described embodiment, so a detailed description is omitted.

[0202] The mobile device (1) can be accommodated in a case (60). The case (60) can be formed in a shape corresponding to the housing (10) of the mobile device (1). Since the case (60) is the same as or similar to the above-described embodiment, a detailed description thereof will be omitted.

[0203] The case (60) may include an external antenna (40) and an antenna adjuster (50). The external antenna (40) and the antenna adjuster (50) may be provided on the rear surface (60b) of the case (60).

[0204] The antenna adjuster (50) is formed so that the external antenna (40) can be positioned at one of the first position (S1) and the second position (S2). In the present embodiment, the antenna adjuster (50) is the same as in the above-described embodiment, and only the structure of the external antenna (40) is different.

[0205] An external antenna (40) can be installed on the rear surface (60b) of the case (60). The external antenna (40) is installed at a predetermined distance from the rear surface (10b) of the housing (10) of the mobile device (1). The external antenna (40) can maintain a predetermined distance (G) from the rear surface (10b) of the housing (10) by means of an antenna adjuster (50). That is, the antenna adjuster (50) can function as a distance maintainer.

[0206] Here, the gap (G) between the rear surface (10b) of the housing (10) and the external antenna (40) refers to one end or one surface of the external antenna (40) that is located closest to the rear surface (10b) of the housing (10) when the external antenna (40) is electromagnetically coupled with the built-in antenna (30). In FIG. 16, the gap (G) between the rear surface (10b) of the housing (10) and the external antenna (40) refers to the distance between the rear surface (10b) of the housing (10) and one end of the external antenna (40) attached to the antenna adjuster (50).

[0207] The external antenna (40) is formed as a Yagi antenna.

[0208] When the Yagi antenna (40) is positioned at the first position (S1) by the antenna adjuster (50), the Yagi antenna (40) is not electromagnetically coupled with the built-in antenna (30). Therefore, when the Yagi antenna (40) is positioned at the first position (S1), the electromagnetic wave emitted from the built-in antenna (30) forms the first antenna radiation pattern (P1).

[0209] When the Yagi antenna (40) is positioned at the second position (S2) by the antenna adjuster (50), the Yagi antenna (40) can be electromagnetically coupled with the built-in antenna (30). Therefore, when the Yagi antenna (40) is positioned at the second position (S2), the electromagnetic wave emitted from the built-in antenna (30) forms a second antenna radiation pattern (P2).

[0210] FIG. 17 is a perspective view showing a mobile device (1) according to one or more embodiments of the present disclosure including a case (60).

[0211] Referring to FIG. 17, the case (60) may include a holder (63). The holder (63) may be installed on the rear surface (60b) of the case (60). The holder (63) may be installed at a location adjacent to the built-in antenna (30) of the mobile device (1) accommodated in the case (60).

[0212] The holder (63) is formed to be able to support the case (60). For example, the holder (63) is formed to be able to rotate at a certain angle with respect to the rear surface (60b) of the case (60) about one end. Therefore, when the holder (63) is folded, the rear surface of the holder (63) can contact the rear surface (60b) of the case (60). In addition, the holder (63) can be positioned at a certain angle from the rear surface (60b) of the case (60). When the holder (63) is spaced at a certain angle with respect to the rear surface (60b) of the case (60), the holder (63) can support the mobile device (1) accommodated in the case (60) at a certain angle with respect to the floor.

[0213] The external antenna (40) can be installed inside the holder (63). When the holder (63) is positioned approximately perpendicular to the rear surface (60b) of the case (60), the external antenna (40) can be electromagnetically coupled with the built-in antenna (30). Accordingly, the first antenna radiation pattern (P1) of the built-in antenna (30) can be changed to the second antenna radiation pattern (P2). When the holder (63) contacts the rear surface (60b) of the case (60), the external antenna (40) is not electromagnetically coupled with the built-in antenna (30). Accordingly, the first antenna radiation pattern (P1) of the built-in antenna (30) does not change. That is, the user can adjust the coupling between the built-in antenna (30) and the external antenna (40) by adjusting the position of the holder (63). In other words, the holder (63) can function as an antenna adjuster (50).

[0214] As another example, an external antenna (40) can be installed on the surface of the holder (63).

[0215] In the above, an example has been described in which the case (60) is formed in a roughly rectangular box shape, but the case (60) is not limited to this. The case (60) may be formed in various shapes depending on the shape of the housing (10) of the mobile device (1).

[0216] For example, if the mobile device (1) is a foldable device that can be folded and unfolded, such as a foldable phone, the case (60) can be formed to accommodate the foldable device.

[0217] In the above, the case where the external antenna (40) and the antenna adjuster (50) are installed in the case (60) has been described, but the mobile device (1) according to one or more embodiments of the present disclosure is not limited thereto. As illustrated in FIGS. 18a, 18b, and 19, the external antenna (40) may be installed on the rear surface (10b) of the housing (10) of the mobile device (1).

[0218] FIG. 18a is a diagram illustrating a mobile device (1) according to one or more embodiments of the present disclosure. FIG. 18b is a plan view illustrating the mobile device (1) of FIG. 18a.

[0219] Referring to FIGS. 18a and 18b, a mobile device (1) according to one or more embodiments of the present disclosure may include an external antenna (40) and an antenna adjuster (50).

[0220] An external antenna (40) may be installed on the rear surface (10b) of the housing (10) of the mobile device (1). The external antenna (40) may be installed at a location where it can be electromagnetically coupled with the built-in antenna (30). For example, the external antenna (40) may be installed adjacent to the built-in antenna (30) in a horizontal direction (XY plane).

[0221] The external antenna (40) is installed so as to be spaced apart from the rear surface (10b) of the housing (10) by a certain distance in the vertical direction (Z direction). Therefore, the external antenna (40) is spaced apart from the built-in antenna (30) installed on the inside of the rear surface (10b) of the housing (10) by a certain distance in the vertical direction. For example, the antenna installation interval (G) between the outer surface (10b) of the housing (10) and the external antenna (40) may be 1 / 10 to 1 / 4 of the wavelength of the electromagnetic wave radiated from the built-in antenna (30).

[0222] An external antenna (40) can be installed on the rear surface (10b) of the housing (10) using a fixing member (42). The thickness of the fixing member (42) can be determined by the antenna installation interval (G). For example, a hook-and-loop fastener can be used as the fixing member (42).

[0223] The antenna adjuster (50) is formed to electrically adjust the coupling of the external antenna (40) and the internal antenna (30). The antenna adjuster (50) can be installed on the fixing member (42).

[0224] The external antenna (40) and antenna adjuster (50) according to the present embodiment can be formed in the same manner as the external antenna (40) and antenna adjuster (50) described in FIGS. 9 and 10.

[0225] FIG. 19 is a drawing showing a mobile device (1) according to one or more embodiments of the present disclosure.

[0226] Referring to FIG. 19, a mobile device (1) according to one or more embodiments of the present disclosure may include an external antenna (40) and an antenna adjuster (50).

[0227] An external antenna (40) can be installed on the rear side (10b) of the housing (10) of the mobile device (1). The external antenna (40) can be installed on the rear side (10b) of the housing (10) with an antenna adjuster (50).

[0228] The antenna adjuster (50) may be formed as an antenna moving device that can position the external antenna (40) at one of the first position (S1) and the second position (S2). Accordingly, the external antenna (40) may be positioned at one of the first position (S1) and the second position (S2) by the antenna adjuster (50), i.e., the antenna moving device. In addition, the external antenna (40) may be spaced apart from the rear surface (10b) of the housing (10) by a certain distance in the vertical direction (Z direction) by the antenna moving device. Accordingly, if the thickness of the antenna moving device is appropriately selected, the external antenna (40) may be spaced apart from the rear surface (10b) of the housing (10) by the antenna installation interval (G).

[0229] The first position (S1) is a position where the external antenna (40) is not electromagnetically coupled with the built-in antenna (30). When the external antenna (40) is positioned at the first position (S1) by the antenna adjuster (50), the external antenna (40) is not electromagnetically coupled with the built-in antenna (30). Therefore, when the external antenna (40) is positioned at the first position (S1), the electromagnetic wave emitted from the built-in antenna (30) forms the first antenna radiation pattern (P1).

[0230] The second position (S2) is a position where the external antenna (40) is electromagnetically coupled with the built-in antenna (30). When the external antenna (40) is positioned at the second position (S2) by the antenna adjuster (50), the external antenna (40) can be electromagnetically coupled with the built-in antenna (30). Therefore, when the external antenna (40) is positioned at the second position (S2), the electromagnetic wave emitted from the built-in antenna (30) forms a second antenna radiation pattern (P2).

[0231] The antenna adjuster (50) may be formed in various structures as long as it can position the external antenna (40) in one of two positions. For example, the antenna adjuster (50) may be formed in a mechanical slider structure capable of shifting the external antenna (40). Specifically, the external antenna (40) may be installed on a movable plate, and the movable plate may be formed to slide relative to a base installed on the rear of the case (60).

[0232] The mobile device (1) is configured to be able to recognize the position of the external antenna (40). That is, the mobile device (1) is configured to be able to recognize whether the external antenna (40) is located at a first position (S1) or a second position (S2). To this end, the mobile device (1) may include an antenna position detection unit (94).

[0233] The antenna position detection unit (94) is installed in the housing (10) and is formed to be able to detect the position of the external antenna (40). The processor (90) and the camera module (20) can recognize the position of the external antenna (40) through the antenna position detection unit (94).

[0234] For example, the antenna position detection unit (94) may be formed as a magnetometer. The magnetometer (94) may be installed in the housing (10) of the mobile device (1). The magnetometer (94) may be formed to detect a permanent magnet (45). The permanent magnet (45) may be installed in the external antenna (40). When the external antenna (40) is installed on a moving plate, the permanent magnet (45) may be installed on the moving plate. Accordingly, the permanent magnet (45) may move integrally with the external antenna (40).

[0235] The magnetometer (94) may be configured to output a signal when it detects a permanent magnet (45). For example, the magnetometer (94) may be configured to not output a signal when the external antenna (40) is at the first position (S1), and to output a signal when the external antenna (40) is at the second position (S2).

[0236] The camera module (20) can recognize the position of the external antenna (40) using the signal transmitted from the antenna position detection unit (94). When the processor (90) controls the camera module (20), the processor (90) can recognize the position of the external antenna (40) using the signal output from the antenna position detection unit (94).

[0237] Hereinafter, a method of capturing an image of a subject using a mobile device (1) according to one or more embodiments of the present disclosure having the structure described above will be described with reference to FIG. 20.

[0238] FIG. 20 is a flowchart illustrating a method of capturing an object using a mobile device (1) according to one or more embodiments of the present disclosure.

[0239] First, the processor (90) checks whether the external antenna (40) is activated (S201).

[0240] The external antenna (40) can be activated by the antenna controller (50). For example, a user can activate the external antenna (40) using the antenna controller (50). Here, activating the external antenna (40) means that the external antenna (40) is in a state where it can be electromagnetically coupled with the built-in antenna (30).

[0241] For example, when the antenna controller (50) is electrically formed, this means that the user supplies power to the external antenna (40) using the antenna controller (50) so that the external antenna (40) can function as an antenna. When the antenna controller (50) is mechanically formed, this means that the user moves the external antenna (40) to the second position (S2) using the antenna controller (50).

[0242] When the external antenna (40) is activated, the processor (90) radiates electromagnetic waves through the built-in antenna (30) (S202). For example, the processor (90) controls the distance measuring unit (93) to radiate electromagnetic waves to the built-in antenna (30). At this time, since the built-in antenna (30) is electromagnetically coupled with the external antenna (40), the electromagnetic waves radiated from the built-in antenna (30) form a second antenna radiation pattern (P2).

[0243] When the external antenna (40) is not activated, and the processor (90) radiates electromagnetic waves through the built-in antenna (30), the built-in antenna (30) forms a first antenna radiation pattern (P1).

[0244] Next, the processor (90) receives the reflected electromagnetic waves and calculates the distance to the subject (S203). For example, the electromagnetic waves radiated through the built-in antenna (30) and the external antenna (40) are reflected by the subject and received by the coupled built-in antenna (30) and the external antenna (40). Then, the distance measuring unit (93) can calculate the distance to the subject using the received electromagnetic waves (i.e., reflected waves). In other words, the distance measuring unit (93) can measure the distance from the mobile device (1) to the subject using the electromagnetic waves radiated through the coupled built-in antenna (30) and the external antenna (40).

[0245] The processor (90) controls the camera module (20) in response to the distance to the subject to capture the subject (S204). For example, the processor (90) selects one of the multiple cameras (21) of the camera module (20) based on the measured distance to the subject to capture the subject. At this time, the camera module (20) operates in the second operating mode to capture the subject at a distance.

[0246] In the above, the case where the processor (90) controls the distance measuring unit (93) to measure the distance to the subject and controls the camera module (20) to capture an image of the subject has been described, but the present disclosure is not limited thereto. As another example, the camera module (20) may control the distance measuring unit (93) to measure the distance to the subject and capture an image of the subject.

[0247] By measuring the distance to a subject using an ultra-wideband antenna, such as in a mobile device (1) according to one or more embodiments of the present disclosure, the distance to the subject can be measured even under extreme conditions where the optical distance sensor does not operate. For example, the distance to the subject can be measured in extremely bright places or places with highly transparent or highly reflective surfaces, such as mirrors, windows, and glass doors.

[0248] Although the present disclosure has been described above using a smartphone as an example of a mobile device (1) according to one or more embodiments of the present disclosure, the present disclosure is not limited thereto. The present disclosure can be applied to various mobile devices (1).

[0249] For example, as illustrated in FIG. 21, a mobile device according to one or more embodiments of the present disclosure may be implemented as a head mount device (HMD) (2).

[0250] FIG. 21 is a drawing showing a mobile device (2) according to one or more embodiments of the present disclosure.

[0251] Referring to Fig. 21, two external antennas (40) are installed on the left and right sides of the head mounted device (2). The external antennas (40) can be fixed to the head mounted device (2) by a fixing member (42). If a hook and loop fastener is used as the fixing member (42), the external antennas (40) can be detachably fixed to the head mounted device (2).

[0252] In Fig. 21, a quad antenna is illustrated using an external antenna (40). However, the type of external antenna (40) is not limited thereto. Any type of directional antenna may be used as the external antenna (40).

[0253] The head mounted device (2) may include an antenna adjuster (50). Since the external antenna (40) and the antenna adjuster (50) are the same or similar to those in the above-described embodiment, a detailed description thereof will be omitted.

[0254] The head-mounted device (2) may include a built-in antenna. The built-in antenna may be provided on the left and right sides of the interior of the head-mounted device (2). The built-in antenna may be configured to transmit and receive ultra-wideband electromagnetic waves.

[0255] FIG. 22 is a drawing showing a mobile device (1) and an external antenna (40) according to one or more embodiments of the present disclosure.

[0256] Referring to Fig. 22, an external antenna (40) is installed on a user's finger (F). For example, by fixing the external antenna (40) to a ring (3) and wearing the ring (3) on the finger (F), the external antenna (40) can be fixed to the user's finger (F). The user can change the direction of the main lobe of the antenna radiation pattern of the external antenna (40) by changing the direction of the finger (F).

[0257] In Fig. 22, a Yagi antenna is illustrated as an external antenna (40). However, the type of external antenna (40) is not limited to this. Any type of antenna can be used as the external antenna (40) as long as it is a directional antenna.

[0258] The mobile device (1) may include a built-in antenna. The built-in antenna may be configured to transmit and receive ultra-wideband electromagnetic waves.

[0259] As illustrated in Fig. 22, when a user holds a mobile device (1) while wearing a ring (3) with an external antenna (40) integrated into a finger (F) and takes a picture of a subject, the mobile device (1) can measure the distance to the subject using the external antenna (40).

[0260] In addition, the mobile device (1) according to one or more embodiments of the present disclosure can increase the length of the main lobe of the radiation pattern of the ultra-wideband electromagnetic wave emitted from the built-in antenna (30) by using the external antenna (40), and thus can find an external device equipped with a tag at a far distance compared to when only the built-in antenna (30) is used.

[0261] For example, when searching for a car with a tag installed on a smartphone, a smartphone including an external antenna (40) according to one or more embodiments of the present disclosure can find the car at a greater distance than a smartphone without an external antenna (40) according to the prior art.

[0262] While the present disclosure has been illustrated and described above with reference to various embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the present disclosure as defined by the appended claims and their equivalents.

Claims

1. Housing; A camera module installed on one side of the above housing; A built-in antenna installed inside the above housing; An external antenna installed adjacent to the built-in antenna on the outside of the housing and spaced apart from one side of the housing by a certain distance; and An antenna adjuster is installed on the outside of the housing and is formed so as to selectively electromagnetically couple the external antenna with the internal antenna; If the built-in antenna is not electromagnetically coupled with the external antenna, the electromagnetic wave radiated from the built-in antenna forms a first antenna radiation pattern, A mobile device, wherein when the built-in antenna is electromagnetically coupled with the external antenna, electromagnetic waves radiated from the built-in antenna form a second antenna radiation pattern.

2. In paragraph 1, The above camera module is configured to operate in a first operating mode and a second operating mode, If the built-in antenna is not electromagnetically coupled with the external antenna, the camera module operates in the first operating mode; A mobile device, wherein when the built-in antenna is electromagnetically coupled with the external antenna, the camera module operates in the second operating mode.

3. In paragraph 1, Further comprising a case accommodating the above housing; A mobile device, wherein the external antenna and the antenna controller are installed in the case.

4. In paragraph 1, A mobile device, wherein the above external antenna is formed as a passive antenna.

5. In paragraph 4, The above antenna adjuster is formed so as to space the external antenna a certain distance from one side of the housing and position it in one of the first position and the second position, The above first position is a position where the external antenna is not electromagnetically coupled with the internal antenna, A mobile device wherein the second position is a position where the external antenna is electromagnetically coupled with the internal antenna.

6. In paragraph 5, It further includes an antenna position detection unit installed in the above housing and formed so as to detect the position of the external antenna; A mobile device in which the camera module recognizes the position of the external antenna using a signal transmitted from the antenna position detection unit.

7. In paragraph 6, The above antenna position detection unit includes a magnetometer installed in the housing, A mobile device, wherein the magnetometer is formed to detect a permanent magnet installed in the external antenna.

8. In paragraph 1, The above external antenna is formed as an active antenna, A mobile device comprising a fixing member that separates the external antenna from one surface of the housing by a predetermined distance and fixes the external antenna to one surface of the housing.

9. In paragraph 8, The above antenna controller, a power supply electrically connected to said external antenna; and A power switch installed between the external antenna and the power supply device and configured to selectively supply electricity from the power supply device to the external antenna; When the power switch is turned on and power is supplied from the power supply device to the external antenna, the external antenna is electromagnetically coupled with the internal antenna, and the electromagnetic wave radiated from the internal antenna forms the second antenna radiation pattern. A mobile device, wherein when the power switch is turned off and power is not supplied to the external antenna, the external antenna is not electromagnetically coupled with the internal antenna, and electromagnetic waves radiated from the internal antenna form the first antenna radiation pattern.

10. In paragraph 9, The above external antenna, Four transmission lines arranged in a square shape; and A mobile device comprising a plurality of switches installed between the four transmission lines and selectively dividing the four transmission lines into two parts or four parts.

11. In paragraph 1, A mobile device further comprising a distance measuring unit configured to measure the distance to a subject captured by the camera module using electromagnetic waves radiated from the built-in antenna.

12. In paragraph 1, A mobile device, wherein the external antenna and the antenna adjuster are detachably installed on the rear of the housing.

13. In paragraph 1, A mobile device wherein the gap (G) between the housing and the external antenna is 1 / 10 to 1 / 4 of the wavelength of the electromagnetic wave radiated from the built-in antenna.

14. A method for measuring a distance to a subject by a mobile device having a built-in antenna, an external antenna, and a camera, A step of checking whether the above external antenna is activated; When the external antenna is activated, a step of radiating electromagnetic waves to the internal antenna; and A method for measuring distance in a mobile device, comprising: a step of receiving the electromagnetic wave reflected from the subject and calculating the distance to the subject.

15. In paragraph 14, A method for measuring distance in a mobile device, wherein when the external antenna is activated, the built-in antenna is electromagnetically coupled with the external antenna, so that the first antenna radiation pattern is changed to the second antenna radiation pattern.

Images