Electronic device including helical antenna

According to various embodiments, an electronic device may include: a housing including a front plate and a rear plate disposed opposite the front plate; a display disposed in a space between the front plate and the rear plate and viewable through at least a portion of the front plate; an antenna structure including at least one coil having a first surface facing the rear plate in the space and a second surface facing a direction opposite the first surface, the antenna structure configured to transmit and/or receive a signal of a selected or designated frequency; a first magnetic sheet disposed at the first surface; a second magnetic sheet at least partially overlapping the first magnetic sheet when viewed from above the rear plate, the second magnetic sheet being disposed at the second surface; and a third magnetic sheet disposed closer to the rear plate than the second surface, and spaced apart from the first magnetic sheet to have electromagnetically designated isolation with the first magnetic sheet with the second magnetic sheet interposed therebetween, when viewed from above the rear plate.

CROSS-REFERENCE TO RELATED APPLICATION

BACKGROUND

Field

The disclosure relates to an electronic device including a helical antenna.

Description of Related Art

As electronic devices such as smart phones have a wider range of available applications, the number of antennas included in the electronic devices is constantly increasing. In recent years, the trend of such electronic devices is to implement a designated performance while pursuing a slimming form factor.

The electronic device may include, for example, a rear plate forming a rear surface thereof and a helical antenna (e.g., helical conductive pattern) disposed near the rear plate therein. There may be various conductive members around the helical antenna, and it is becoming more difficult to design a helical antenna in a limited space because of slimness of the electronic device while reducing a decrease in antenna radiation performance because of the conductive member.

SUMMARY

Embodiments of the disclosure provide an electronic device including a helical antenna for improving and/or securing a radiation performance by disposing a plurality of magnetic sheets.

According to various example embodiments of the disclosure, an electronic device includes: a housing including a front plate and a rear plate disposed opposite the front plate; a display disposed in a space between the front plate and the rear plate and viewable through at least a portion of the front plate; an antenna structure including at least one coil having a first surface facing the rear plate in the space and a second surface facing a direction opposite the first surface, the antenna structure configured to transmit and/or receive a signal of a selected or designated frequency; a first magnetic sheet disposed at the first surface; a second magnetic sheet at least partially overlapping the first magnetic sheet when viewed from above the rear plate, the second magnetic sheet being disposed at the second surface; and a third magnetic sheet disposed closer to the rear plate than the second surface, and spaced apart from the first magnetic sheet to have electromagnetically designated isolation with the first magnetic sheet with the second magnetic sheet interposed therebetween, when viewed from above the rear plate.

DETAILED DESCRIPTION

The following description with reference to the accompanying drawings is provided to describe various example embodiments of the disclosure. The disclosure includes various details to assist in that understanding but these are to be regarded merely as examples. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various example embodiments described herein can be made without departing from the scope and spirit of the disclosure. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

FIG. 1is a block diagram illustrating an example electronic device101in a network environment100according to an embodiment of the disclosure.

The audio module170may convert a sound into an electrical signal and vice versa. The audio module170may obtain the sound via the input device150, or output the sound via the audio output device155or a headphone of an external electronic device (e.g., an electronic device102) directly (e.g., wiredly) or wirelessly coupled with the electronic device101.

The camera module180may capture a still image or moving images. The camera module180may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module188may manage power supplied to the electronic device101. The power management module188may be implemented as at least part of, for example, a power management integrated circuit (PMIC).

An electronic device according to an embodiment may be one of various types of electronic devices. The electronic device may include a portable communication device (e.g., a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, a home appliance, or the like. However, the electronic device is not limited to any of those described above.

Various embodiments of the disclosure and the terms used herein are not intended to limit the technological features set forth herein to particular embodiments and include various changes, equivalents, or replacements for a corresponding embodiment.

With regard to the description of the drawings, similar reference numerals may be used to refer to similar or related elements.

A singular form of a noun corresponding to an item may include one or more of the things, unless the relevant context clearly indicates otherwise. As used herein, each of such phrases as “A or B”, “at least one of A and B”, “at least one of A or B”, “A, B, or C”, “at least one of A, B, and C”, and “at least one of A, B, or C” may include any one of, or all possible combinations of the items enumerated together in a corresponding one of the phrases.

As used herein, such terms as “1st” and “2nd”, or “first” and “second” may be used to simply distinguish a corresponding component from another, and does not limit the components in other aspect (e.g., importance or order). If an element (e.g., a first element) is referred to, with or without the term “operatively” or “communicatively”, as “coupled with”, “coupled to”, “connected with”, or “connected to” another element (e.g., a second element), the element may be coupled with the other element directly (e.g., wiredly), wirelessly, or via a third element.

FIG. 2Ais a front perspective view of an example mobile electronic device200according to an embodiment of the disclosure.

FIG. 2Bis a rear perspective view of the electronic device200ofFIG. 2Aaccording to an embodiment of the disclosure.

Referring toFIGS. 2A and 2B, according to an embodiment, an electronic device200may include a housing210that includes a first surface (or front surface)210A, a second surface (or rear surface)210B, and a lateral surface210C that surrounds a space between the first surface210A and the second surface210B. According to another embodiment, the housing210may refer to a structure that forms a part of the first surface210A, the second surface210B, and the lateral surface210C. According to an embodiment, the first surface210A may be formed of a front plate202(e.g., a glass plate or polymer plate coated with a variety of coating layers) at least a part of which is substantially transparent. The second surface210B may be formed of a rear plate211which is substantially opaque. The rear plate211may be formed of, for example, coated or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or any combination thereof. The lateral surface210C may be formed of a lateral bezel structure (or “lateral member”)218which is combined with the front plate202and the rear plate211and includes a metal and/or polymer. The rear plate211and the lateral bezel structure218may be integrally formed and may be of the same material (e.g., a metallic material such as aluminum).

According to an embodiment, the electronic device200may include at least one of a display201, audio modules203,207and214, sensor module204, camera modules205,212and213, key input devices217, and connector holes208and209. In various embodiments, the electronic device200may omit at least one (e.g., the key input devices217) of the above components, or may further include other components (e.g., a fingerprint sensor, or a light emitting device). In various embodiments, the electronic device200may include the electronic device101ofFIG. 1.

The display201may be viewable through a substantial portion of the front plate202, for example. In various embodiments, outlines (i.e., edges and corners) of the display201may have substantially the same form as those of the front plate202. In another embodiment (not shown), the spacing between the outline of the display201and the outline of the front plate202may be substantially unchanged in order to enlarge the exposed area of the display201.

In another embodiment (not shown), a recess or opening may be formed in a portion of a display area of the display201to accommodate or to be aligned with at least one of the audio modules (e.g., the audio module214), the sensor module204, and the camera module205. In another embodiment (not shown), at least one of the audio modules (e.g., the audio module214), the sensor module204, and the camera module205may be disposed on the back of the display area of the display201. In another embodiment (not shown), the display201may be combined with, or adjacent to, a touch sensing circuit, a pressure sensor capable of measuring the touch strength (pressure), and/or a digitizer for detecting a stylus pen.

The audio modules203,207and214may correspond to a microphone hole (e.g., the audio module203) and speaker holes (e.g., the audio modules207and214). The microphone hole may contain a microphone disposed therein for acquiring external sounds and, in a case, contain a plurality of microphones to sense a sound direction. The speaker holes may be classified into an external speaker hole and a call receiver hole. In various embodiments, the microphone hole and the speaker holes may be implemented as a single hole, or a speaker (e.g., a piezo speaker) may be provided without the speaker holes.

The sensor module204may generate electrical signals or data corresponding to an internal operating state of the electronic device200or to an external environmental condition. The sensor module204may include, for example, a proximity sensor. The proximity sensor may generate signals of a proximity of an external object based on lights that pass through the first surface210A of the housing210. In various embodiments, the sensor module204may include a biometric sensor. In various embodiments (not shown), the electronic device200may include another sensor module, such as a heart rate monitor (HRM) sensor or a fingerprint sensor, disposed on the second surface210B of the housing210. The fingerprint sensor may be disposed on the second surface210B as well as the first surface210A (e.g., the display201) of the housing210. The electronic device200may further include at least one of a gesture sensor, a gyro sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor (e.g., the sensor module204).

The camera modules205,212and213may include a first camera device (e.g., the camera module205), a second camera device (e.g., the camera module212), and/or flash (e.g., the camera module213). The first camera device may generate image signals based on lights that pass through a first surface210A of the housing210. The second camera device and the flash may be disposed on the second surfaced210B of the housing210. The camera module205or the camera module212may include one or more lenses, an image sensor, and/or an image signal processor. The flash may include, for example, a light emitting diode or a xenon lamp. In various embodiments, two or more lenses (infrared cameras, wide angle and telephoto lenses) and image sensors may be disposed on one side of the electronic device200.

The key input devices217may be disposed on the lateral surface210C of the housing210. In another embodiment, the electronic device200may not include some or all of the key input devices217described above, and the key input devices217which are not included may be implemented in another form such as a soft key on the display201. In various embodiments, the key input devices217may include a sensor module (not shown) disposed on the second surface210B of the housing210.

The light emitting device (not shown) may be disposed on the first surface210A of the housing210, for example. For example, the light emitting device may provide status information of the electronic device200in an optical form. In various embodiments, the light emitting device may provide a light source associated with the operation of the camera module205. The light emitting device may include, for example, a light emitting diode (LED), an infrared (IR) LED, or a xenon lamp.

The connector holes208and209may include a first connector hole (e.g., the connector hole208) adapted for a connector (e.g., a universal serial bus (USB) connector) for transmitting and receiving power and/or data to and from an external electronic device, and/or a second connector hole (e.g., the connector hole209) adapted for a connector (e.g., an earphone jack) for transmitting and receiving an audio signal to and from an external electronic device.

FIG. 3is an exploded perspective view illustrating the electronic device200ofFIGS. 2A and 2Baccording to an embodiment.

Referring toFIG. 3, according to an embodiment, the electronic device200may include a side bezel structure218, first support member311(e.g., bracket), front plate202, display201, first substrate assembly341, second substrate assembly342, battery350, second support member361, third support member362, antenna structure370, and/or rear plate211. In some embodiments, the electronic device200may omit at least one (e.g., the first support member311, the second support member361, or the third support member362) of the components or may additionally include other components. At least one of the components of the electronic device200may be the same as or similar to at least one of the components of the electronic device200ofFIG. 2A or 2B, and repeated descriptions thereof will be omitted below.

The first support member311may be, for example, disposed inside the electronic device200to be connected to the side bezel structure218or may be integrally formed with the side bezel structure218. The first support member311may be made of, for example, a metal material and/or a non-metal (e.g., polymer) material.

The display201may be, for example, coupled to one surface of the first support member311and disposed between the first support member311and the front plate202. The first substrate assembly341and the second substrate assembly342may be, for example, coupled to the other surface of the first support member311and disposed between the first support member311and the rear plate211.

According to an example embodiment, the first substrate assembly341may include a first printed circuit board (PCB). The display201or a first camera device205may be electrically connected to the first printed circuit board through various electrical paths such as a flexible printed circuit board (FPCB). The first substrate assembly341may include various electronic components electrically connected to the first printed circuit board. The electronic component may be disposed at the first printed circuit board or may be electrically connected to the first printed circuit board through an electrical path such as a cable or an FPCB. The electronic component may include, for example, at least some of the components included in the electronic device101ofFIG. 1.

According to various embodiments, the first substrate assembly341may include a main PCB, a slave PCB disposed to partially overlap the main PCB, and/or an interposer substrate between the main PCB and the slave PCB, when viewed from above the rear plate211.

According to an example embodiment, the second substrate assembly342may be spaced apart from the first substrate assembly341with the battery350interposed therebetween, when viewed from above the front plate202. The second substrate assembly342may include a second printed circuit board electrically connected to the first printed circuit board of the first substrate assembly341. The second substrate assembly342may include various electronic components electrically connected to the second printed circuit board. The electronic component may be disposed at the second printed circuit board or may be electrically connected to the second printed circuit board through an electrical path such as a cable or an FPCB. The electronic component may include, for example, some of the components included in the electronic device101ofFIG. 1. According to an embodiment, the electronic component may be a universal serial bus (USB) connector using the first connector hole208, an earphone jack using a second connector hole209, a microphone using a microphone hole203, or a speaker using a speaker hole207.

According to an embodiment, the battery350may be disposed between the first support member311and the rear plate211and may be coupled to the first support member311. The battery350may refer, for example, to a device for supplying power to at least one component of the electronic device200and may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell. At least a portion of the battery350may be disposed, for example, on substantially the same plane as a first printed circuit board of the first substrate assembly341or a second printed circuit board of the second substrate assembly342. The battery350may be integrally disposed inside the electronic device200or may be detachably disposed from the electronic device200.

According to an example embodiment, the second support member361may be disposed between the first support member311and the rear plate211, and be coupled to the first support member311through a fastening element such as a bolt. At least a portion of the first substrate assembly341may be disposed between the first support member311and the second support member361, and the second support member361may cover and protect the first substrate assembly341.

According to an embodiment, the third support member362may be spaced apart from the second support member361with the battery350interposed therebetween, when viewed from above the front plate202. The third support member362may be disposed between the first support member311and the rear plate211, and be coupled to the first support member311through a fastening element such as a bolt. At least a portion of the second substrate assembly342may be disposed between the first support member311and the third support member362, and the third support member362may cover and protect the second substrate assembly342.

According to an embodiment, the second support member361and/or the third support member362may be made of a metal material and/or a non-metal material (e.g., polymer). According to various embodiments, the second support member361and/or the third support member362may be referred to as a rear case.

According to an embodiment, the antenna structure370may be disposed between the second support member361and the rear plate211. The antenna structure370may be implemented in a film form of, for example, an FPCB. According to an embodiment, the antenna structure370may include, for example, at least one conductive pattern used as a loop type emitter. For example, the at least one conductive pattern may include a planar helical conductive pattern (e.g., flat coil or pattern coil).

According to an embodiment, a conductive pattern of the antenna structure370may be electrically connected to a wireless communication circuit (e.g., the wireless communication module192ofFIG. 1) disposed at the first substrate assembly341. For example, the conductive pattern may be used for short range wireless communication such as near field communication (NFC). As another example, the conductive pattern may be used in magnetic secure transmission (MST) for transmitting and/or receiving magnetic signals. However, the disclosure is not limited thereto, and the conductive pattern may be used for various purposes.

According to various embodiments, a conductive pattern of the antenna structure370may be electrically connected to a power transmission/reception circuit disposed at the first substrate assembly341. The power transmission/reception circuit may wirelessly receive power from an external electronic device through a conductive pattern or may wirelessly transmit power to an external electronic device. The power transmission/reception circuit may include a power management integrated circuit (PMIC) included in the power management module188ofFIG. 1or a charger integrated circuit (IC) and charge the battery350using power received through a conductive pattern350.

According to an example embodiment, the display201may include an opening2011formed in at least a partial area corresponding to an optical sensor (e.g., the first camera device205or the biometric sensor) disposed inside the electronic device200. The opening2011may be formed in, for example, a notch form. According to some embodiments, the opening2011may be implemented in the form of a through hole. The optical sensor may receive external light through the opening2011of the display201and some area of the front plate202aligned with the opening2011. According to various embodiments (not illustrated), the opening2011of the display201may be replaced to be implemented into a substantially transparent area formed by changing a pixel structure and/or a wiring structure.

According to an example embodiment, the rear plate211may include an opening2112for exposing and disposing the second camera device212and the flash213included in the first substrate assembly341at the rear surface210B.

FIG. 4is a diagram illustrating a state in which the rear plate211is separated from the electronic device200ofFIG. 2Aaccording to an embodiment.

Referring toFIG. 4, the electronic device200may include a side member218, a second support member361, a third support member362, a battery350, a plurality of electrical paths450and460, an antenna structure370, and/or a first magnetic sheet610.

According to an embodiment, the side member218may include a first side portion411, a second side portion412, a third side portion413, or a fourth side portion414. For example, the first side portion411may be disposed at the side opposite to that of the second side portion412and be substantially parallel to the second side portion412. The third side portion413may connect one end portion (not illustrated) of the first side portion411and one end portion (not illustrated) of the second side portion412. For example, the fourth side portion414may connect the other end portion (not illustrated) of the first side portion411and the other end portion (not illustrated) of the second side portion412. The fourth side portion414may be disposed at the side opposite to that of the third side portion413and be substantially parallel to the third side portion413.

According to an embodiment, the second support member361may be formed in a plate shape capable of at least partially covering the first substrate assembly341. The second support member361may be made of a non-conductive material, for example, a polymer. The second support member361may include a plurality of through holes (not illustrated) and may be coupled by a bolt to the first support member311ofFIG. 3through the plurality of through holes.

According to an example embodiment, the second support member361may include an opening3612. A second camera device312and/or a flash313included in the first substrate assembly341may be disposed at the opening3612of the second support member361. The second camera device312and/or the flash313may be exposed at the rear surface210B (seeFIG. 2B) through the opening2112formed in the rear plate211ofFIG. 3.

According to an example embodiment, the opening3612of the second support member361may be formed closer to the third side portion413than the fourth side portion414. The opening3612may be formed closer to the first side portion411than the second side portion412. According to an example embodiment, the opening3612may include may have a larger width in a direction (e.g., y-axis direction) between the first side portion411and the second side portion412than a width in a direction (e.g., x-axis direction) between the third side portion413and the fourth side portion414.

According to an embodiment, a plurality of conductive patterns421,422,423,424,425, and426may be disposed at the second support member361. The plurality of conductive patterns421,422,423,424,425, and426may be electrically connected to, for example, a wireless communication circuit (e.g., the wireless communication module192ofFIG. 1) disposed at the first printed circuit board of the first substrate assembly341to operate as an antenna radiator. The second support member361may include one surface361afacing the rear plate211ofFIG. 3and the other surface (not illustrated) disposed at the side opposite to that of the one surface361aand facing the first substrate assembly341ofFIG. 3. In an example embodiment, at least a portion of the plurality of conductive patterns421,422,423,424,425, and426may include a first portion (not illustrated) disposed at the one surface361aof the second support member361and a second portion (not illustrated) extended from the first portion to be disposed at the other surface of the second support member361. A connecting portion between the first portion and the second portion may penetrate through holes formed in the second support member361. According to some embodiments (not illustrated), the connecting portion between the first portion and the second portion may be disposed at a side surface (not illustrated) of the second supporting member361adjacent to the side member218according to a position of the conductive pattern. A flexible conductive member such as a C clip (e.g., C-shaped spring), a pogo-pin, a spring, a conductive poron, conductive rubber, a conductive tape, a cooper connector, or the like, may be disposed between the first printed circuit board of the first substrate assembly341and the second portion. For example, the wireless communication circuit disposed at the first printed circuit board may feed a radiating current to the second portion serving as a feeding unit through the flexible conductive member.

According to an embodiment, at least some of the plurality of conductive patterns421,422,423,424,425, and426may be implemented into laser direct structuring (LDS). According to various embodiments, at least some of the plurality of conductive patterns421,422,423,424,425, and426may be implemented in various forms such as plating, printing, sus, FPCB, or the like.

According to an embodiment, the third support member362may be formed in a plate shape capable of at least partially covering the first substrate assembly341ofFIG. 3. The third support member362may be made of a non-conductive material, for example, a polymer. The third support member362may include a plurality of through holes (not illustrated) and be coupled by a bolt to the first support member311ofFIG. 3through the plurality of through holes.

According to an embodiment, a plurality of conductive patterns431and432may be disposed at the third support member362. At least some of the plurality of conductive patterns431and432may be electrically connected to a wireless communication circuit (e.g., the wireless communication module192ofFIG. 1) disposed at the first printed circuit board of the first substrate assembly341to operate as an antenna radiator. The plurality of conductive patterns431and432may be implemented in substantially the same manner as the plurality of conductive patterns421,422,423,424,425, and426disposed at the second support member361and a detailed description thereof is omitted.

According to various embodiments, the position, number, or shape of the conductive pattern disposed at the second support member361or the third support member362to serve as an antenna radiator may be various without being limited toFIG. 4.

According to an embodiment, the battery350may be disposed in a recess formed by the first support member311, the first substrate assembly341, the second substrate assembly342, the third side portion413, and the fourth side portion414ofFIGS. 3 and 4. The recess may be, for example, a concave space that can fit the battery350in the form of a square plate.

According to an example embodiment, the electronic device200may include a plurality of electrical paths450and460that electrically connect the first printed circuit board included in the first substrate assembly341and the second printed circuit board included in the second substrate assembly342ofFIG. 3. Various signals may be transferred through the plurality of electrical paths450and460between the first printed circuit board and the second printed circuit board. In an example embodiment, at least one of the plurality of electrical paths450and460may be omitted.

For example, referring toFIGS. 3 and 4, in a state in which an external electronic device (e.g., the electronic device102ofFIG. 1) is connected through an earphone jack of the second substrate assembly342using the second connector hole209, audio signals output from various electronic components (e.g., the audio module170ofFIG. 1) included in the first substrate assembly341may be transferred to an external electronic device through an electrical path450or460and an earphone jack.

For example, referring toFIGS. 3 and 4, audio signals output from various electronic components (e.g., the audio module170ofFIG. 1) included in the first substrate assembly341may be transferred to the speaker included in the second substrate assembly342through the electrical path450or460.

For example, referring toFIGS. 3 and 4, a voice signal obtained by the microphone included in the second substrate assembly342through the microphone hole203may be transferred to various electronic components (e.g., the audio module170ofFIG. 1) included in the first substrate assembly341through the electrical path450or460.

For example, referring toFIGS. 3 and 4, in a state in which an external electronic device (e.g., the electronic device102ofFIG. 1) is connected through a connector of the second substrate assembly342using the first connector hole208, signals output from various electronic components (e.g., various signals related to audio, video, and power) included in the first substrate assembly341may be transferred to external electronic devices through the electrical path450or460and the connector. Signals output from the external transmission device (e.g., various signals such as audio, video, and power) may be transferred to various electronic components included in the first substrate assembly341through the connector and the electrical path450or460.

For example, referring toFIGS. 3 and 4, at least one of the plurality of conductive patterns431and432may be electrically connected to a second printed circuit board of the second substrate assembly342and be electrically connected to the wireless communication circuit (e.g., the wireless communication module192ofFIG. 1) included in the first substrate assembly341through the electrical path450or460. For example, at least one of the plurality of electrical paths450and460is a structure for transferring a signal (voltage, current) of a radio frequency (RF) through the conductive pattern431or432and may be a conductive system, for example, a transmission line using a wave transfer function by an electrical element (e.g., element having resistance, inductance, conductance, or capacitance per unit length).

According to an embodiment, at least one of the plurality of electrical paths450and460may be extended across the battery350. For example, some of the plurality of electrical paths450and460may be disposed between the battery350and the rear plate211ofFIG. 3.

According to an embodiment, at least one of the plurality of electrical paths450and460may include an FPCB. For example, the plurality of electrical paths450and460may include a first electrical path450disposed closer to the fourth side surface414than the third side surface413and a second electrical path460between the first electrical path450and the third side portions413. The first electrical path450may include one end portion (not illustrated) electrically connected to the first printed circuit board of the first substrate assembly341and the other end portion (not illustrated) electrically connected to the second printed circuit board of the second substrate assembly342. The second electrical path460may include a first end portion (not illustrated) and a second end portion (not illustrated) that are respectively electrically connected to different positions of the first printed circuit board included in the first substrate assembly341and a third end portion (not illustrated) electrically connected to the second printed circuit board included in the second substrate assembly342ofFIG. 3.

According to various embodiments, a shape, location, or number of electrical paths across the battery350may be various without being limited to the embodiment ofFIG. 4.

According to various embodiments (not illustrated), a first printed circuit board of the first substrate assembly341may have a protruding portion extended between the third side portion413and the battery350. In this case, a size of the battery350may be partially reduced in a direction (e.g., −x axis direction) advancing from the third side portion413to the fourth side portion414. According to various embodiments, an electrical path such as an FPCB or a cable electrically connecting the second printed circuit board included in the second substrate assembly342ofFIG. 3and the protruding portion may be disposed between the third side portion413and the battery350. In this case, at least one of the electrical paths450and460traversing the battery350may be omitted.

According to various embodiments (not illustrated), the first printed circuit board of the first substrate assembly341may have a protruding portion extended between the fourth side portion414and the battery350. In this case, a size of the battery350may be partially reduced in a direction (e.g., +x axis direction) advancing from the fourth side portion414to the third side portion413. According to various embodiments, an electrical path such as an FPCB or a cable electrically connecting the second printed circuit board included in the second substrate assembly342ofFIG. 3and the protruding portion may be disposed between the fourth side portion414and the battery350. In this case, at least one of the electrical paths450and460traversing the battery350may be omitted.

According to various embodiments (not illustrated), instead of the first printed circuit board of the first substrate assembly341and the second printed circuit board of the second substrate assembly342, a one-piece printed circuit board may be provided. The one-piece printed circuit board may include a first portion disposed between the first side portion411and the battery350, a second portion disposed between the second side portion412and the battery350, and a third portion disposed between the third side portion413and the battery350or between the fourth side portion414and the battery350and connecting the first portion and the second portion. For the third portion, a size of the battery350may be partially reduced in a direction (e.g., x-axis direction) between the fourth side portion414and the third side portion413. When a one-piece printed circuit board is implemented, at least one of the electrical paths450and460traversing the battery350may be omitted.

According to an embodiment, the antenna structure370may be formed in a film form to be disposed at or coupled to the second support member361between the second support member361and the rear plate211ofFIG. 3. According to some embodiments, the antenna structure370may be disposed at or coupled to the rear plate211between the second support member361and the rear plate211ofFIG. 3.

According to an embodiment, the antenna structure370may include one or more conductive patterns510and520used as an antenna radiator. The antenna structure370may be implemented into, for example, an FPCB. The antenna structure370may be disposed in an area that is not overlapped with a plurality of conductive patterns421,422,423,424,425, and426and the opening3612of one surface361aof the second support member361. For example, the opening3612and the plurality of conductive patterns421,422,423,424,425, and426may be disposed near the side member218to secure an area for disposing the antenna structure370. The antenna structure370may be spaced apart from the conductive patterns421,422,423,424,425, and426so as to be electromagnetically isolated from the conductive patterns421,422,423,424,425, and426to secure a radiation performance thereof.

FIG. 5is a diagram illustrating an example antenna structure370ofFIG. 4according to an embodiment.

Referring toFIGS. 4 and 5, the antenna structure370may include a first conductive pattern510and/or a second conductive pattern520. According to an example embodiment, the first conductive pattern510or the second conductive pattern520may, for example, include a loop type radiator and may be implemented in, for example, a helical conductive pattern (e.g., flat coil or pattern coil) in a flat shape.

According to an embodiment, the first conductive pattern510may be extended from a first end portion511to a second end portion512so as to form a first coil portion (or first wound portion)513including a plurality of turns. According to an embodiment, the second conductive pattern520may be extended from a third end portion521to a fourth end portion522so as to form a second coil portion (or second wound portion)523including a plurality of turns. The antenna structure370may include a connector440electrically connected to the first end portion511and the second end portion512of the first conductive pattern510, and/or the third end portion521and the fourth end portion522of the second conductive pattern520. The connector440may pass through an opening3613formed in, for example, the second support member361ofFIG. 4to be electrically connected to a connector disposed at the first printed circuit board of the first substrate assembly341.

According to an embodiment, one of the first end portion511and the second end portion512of the first conductive pattern510may be electrically connected to a wireless communication circuit (e.g., the wireless communication module192ofFIG. 1), and the other one thereof may be electrically connected to a ground member (e.g., a ground plane included in the first printed circuit board of the first substrate assembly341). The wireless communication circuit may supply a radiating current to the first conductive pattern510and transmit and/or receive a first signal of a first frequency band selected or designated through the first conductive pattern510. For example, the first signal may have a frequency (e.g., about 70 kHz) of about 200 kHz or less for magnetic secure transmission (MST).

According to an embodiment, one of the third end portion521and the fourth end portion522of the second conductive pattern520may be electrically connected to a wireless communication circuit (e.g., the wireless communication module192ofFIG. 1), and the other one thereof may be electrically connected to a ground member (e.g., a ground plane included in the first printed circuit board of the first substrate assembly341). The wireless communication circuit may supply a radiating current to the second conductive pattern520and transmit and/or receive a second signal in a second frequency band selected or designated through the second conductive pattern520. The second frequency band may be different from the first frequency band using the first conductive pattern510. For example, the second signal may have a frequency of about 13.56 MHz for near field communication (NFC).

According to various embodiments, the first conductive pattern510may be electrically connected to a power transmission/reception circuit disposed at a first printed circuit board included in the first substrate assembly341ofFIG. 3. The power transmission/reception circuit may wirelessly receive power from an external electronic device through the first conductive pattern510or may wirelessly transmit power to the external electronic device. For example, the processor (e.g., the processor120ofFIG. 1) may control a switch according to a mode to selectively connect the first conductive pattern510to a wireless communication circuit or a power transmission/reception circuit.

According to various embodiments (not illustrated), the antenna structure370may further include a conductive line for electrically connecting between the connector440and a point between the first end portion511and the second end portion512of the first conductive pattern510. The power transmission/reception circuit may use an electrical path between the first end portion511and the conductive line or an electrical path between the second end portion512and the conductive line in a mode for transmitting and/or receiving power.

According to various embodiments (not illustrated), the antenna structure370may include an additional conductive pattern electrically connected to a power transmission/reception circuit.

According to an embodiment, the power transmission/reception circuit may be an electromagnetic induction type power transmission/reception circuit. For example, when a magnetic field flowing to an antenna radiator (e.g., coil) of an external electronic device is applied to a conductive pattern (e.g., the first conductive pattern510) included in the antenna structure370, an induced current may flow through the conductive pattern. The power transmission/reception circuit may provide power (e.g., battery charging) to a load of the electronic device200ofFIG. 2Ausing such an induced current. According to various embodiments, the power transmission/reception circuit may wirelessly transmit power to the external electronic device using electromagnetic induction between the antenna radiator of the external electronic device and the conductive pattern of the antenna structure370. The electromagnetic induction type power transmission/reception circuit may follow, for example, a wireless power consortium (WPC) standard. The electromagnetic induction type power transmission/reception circuit according to the WPC standard may wirelessly receive power from the external electronic device or may wirelessly transmit power from the external electronic device using a frequency of about 110 to 205 kHz. According to various embodiments, the electromagnetic induction type power transmission/reception circuit may follow a power matter alliance (PMA) standard. The electromagnetic induction type power transmission/reception circuit according to the PMA standard may wirelessly receive power from the external electronic device or wirelessly transmit power to the external electronic device using a frequency of about 227 to 357 kHz or about 118 to 153 kHz.

According to another embodiment, the power transmission/reception circuit may be an electromagnetic resonance type power transmission/reception circuit. For example, the conductive pattern (e.g., the first conductive pattern510) of the antenna structure370may have substantially the same resonant frequency as that of an antenna (e.g., coil) for transmitting and receiving power of the external electronic device. Using a resonance phenomenon between the conductive pattern of the antenna structure370and the antenna for power transmission and reception of the external electronic device, the power transmission/reception circuit may wirelessly receive power from the external electronic device or may wirelessly transmit power to the external electronic device. The electromagnetic resonance type power transmission/reception circuit may follow, for example, the A4WP (alliance for wireless poser) standard. The electromagnetic resonance type power transmission/reception circuit according to the A4WP standard may wirelessly receive power from the external electronic device or may wirelessly transmit power to the external electronic device using a resonance frequency of about 6.78 MHz.

According to an embodiment, the antenna structure370may include a coil inner area (or coil inside)540. The coil inner area540may refer, for example, to an area enclosed by the first coil portion513of the first conductive pattern510. According to an embodiment, the first coil portion513may be disposed around the rectangular coil inner area540and form, for example, a planar spiral coil of a square shape. When a radiation current is supplied to the first conductive pattern510, a magnetic force generated in the first conductive pattern510may pass through the coil inner area540.

According to various embodiments (not illustrated), the coil inner area540may be implemented in various other forms such as a circle without being limited to a rectangle. The first conductive pattern510may be implemented with a planar helical coil of various shapes according to a shape of the coil inner area540.

According to an embodiment, a second coil portion523of the second conductive pattern520may be disposed outside the first coil portion513of the first conductive pattern510. According to various embodiments, when a radiating current is supplied to the second conductive pattern520, a magnetic force generated in the second conductive pattern520may pass through the coil inner area540.

FIG. 6is a diagram illustrating an example antenna structure370and a second magnetic sheet620disposed at the antenna structure370according to an embodiment.

Referring toFIGS. 4, 5 and 6, the antenna structure370may include a first surface370afacing the rear plate211ofFIG. 3and a second surface370bdisposed at the side opposite to that of the first surface370aand facing one surface361aof the second support member361. According to an embodiment, a first magnetic sheet610may be disposed at or attached to the first surface370aof the antenna structure370(see, e.g.,FIG. 4). According to an example embodiment, the second magnetic sheet620may be disposed at or attached to the second surface370bof the antenna structure370.

According to an embodiment, when viewed from above (e.g., when viewed in z-axis direction) the first surface370aof the antenna structure370, the first magnetic sheet610and the second magnetic sheet620may be disposed to partially overlap. For example, when viewed from above the first surface370aof the antenna structure370, the first magnetic sheet610and the second magnetic sheet620may overlap each other in the coil inner area540ofFIG. 5. For example, the first magnetic sheet610may include a first portion611disposed in the coil inner area540ofFIG. 5and a second portion612extended from the first portion611. The second magnetic sheet620may include a third portion621disposed in the coil inner area540ofFIG. 5and a fourth portion622extended from the third portion621. When viewed from above the first surface370aof the antenna structure370, the first portion611and the third portion621may overlap at least partially. When viewed from above the first surface370aof the antenna structure370, the second portion612may be disposed between the first portion611and the first side portion411. When viewed from above the first surface370aof the antenna structure370, the fourth portion622may be disposed between the third portion621and the battery350. According to an embodiment, in a direction (e.g., in x-axis direction) between the third side portion413and the fourth side portion414, the second portion612may have a larger width than that of the first portion611. According to an embodiment, in x-axis direction, the fourth portion622may have a larger width than that of the third portion621.

FIG. 7is a cross-sectional view illustrating line A-A′ in the electronic device ofFIG. 2Aaccording to an embodiment.

Referring toFIG. 7, in an example embodiment, the electronic device200may include a housing (e.g., the housing210ofFIG. 2A) including a front plate202, a rear plate211, and side members218that form an external shape thereof, a first support member311disposed in an inner space of the housing, a display201, a first substrate assembly341, a second substrate assembly342, a battery350, a second electrical path460, a second support member361, a third support member362, an antenna structure370, a first magnetic sheet610, a second magnetic sheet620, and/or a third magnetic sheet700.

According to an example embodiment, the second electrical path460may electrically connect the first substrate assembly341and the second substrate assembly342. The second electrical path460may be disposed across, for example, between the battery350and the rear plate211.

According to an embodiment, the antenna structure370may be disposed between the first substrate assembly341and the rear plate211. The antenna structure370may be implemented in, for example, a film form. The antenna structure370may be disposed not to overlap the battery350, when viewed from above the rear plate211(e.g., when viewed in +z axis direction). According to an embodiment, the antenna structure370may be disposed at the second support member361for covering at least a portion of the first substrate assembly341.

According to an example embodiment, the antenna structure370may include a first surface370afacing the rear plate211and a second surface370bdisposed at the side opposite to that of the first surface370aand facing the second support member361. The first magnetic sheet610may be disposed at the first surface370aof the antenna structure370. The second magnetic sheet620may be disposed at the second surface370bof the antenna structure370. According to an embodiment, when viewed from above the rear plate211, the first magnetic sheet610and the second magnetic sheet620may partially overlap each other in the coil inner area540ofFIG. 5.

According to an embodiment, the third magnetic sheet700may be disposed at the rear plate211between the battery350and the rear plate211. Referring toFIGS. 4 and 7, when viewed from above the rear plate211, the third magnetic sheet700may be disposed to overlap at least partially with the first electrical path450and/or the second electrical path460. The third magnetic sheet700may reduce noise transfer to the first electrical path450and the second electrical path460. For example, the third magnetic sheet700may shield noise from an external electronic device from reaching the first electrical path450and/or the second electrical path460through the rear plate211. For example, when the electronic device200is mounted on a wireless charging device, the third magnetic sheet700may reduce an electrical impact (e.g., noise) applied to the first electrical path450and/or the second electrical path460by the wireless charging device. By noise shielding by the third magnetic sheet700, integrity of a signal transmitted through the first electrical path450and/or the second electrical path460may be secured.

According to an embodiment, the third magnetic sheet700may be disposed closer to the rear plate211in −z direction than the second magnetic sheet620. For example, the second magnetic sheet620may be disposed farther from the rear plate211in +z axis direction than the first magnetic sheet610and the third magnetic sheet700. The third magnetic sheet700may be spaced apart from the first magnetic sheet610in −y axis direction.

According to various embodiments, the third magnetic sheet700may be implemented in a one-piece FPCB form with the first electrical path450and/or the second electrical path460. According to various embodiments, the third magnetic sheet700may be attached to an FPCB including the first electrical path450and/or the second electrical path460.

FIG. 8is a cross-sectional view illustrating an example antenna structure related to the antenna structure370in the electronic device200ofFIG. 7according to an embodiment.

According to an example embodiment, the antenna structure370may include a first area810including the first conductive pattern510ofFIG. 4and a second area820including the second conductive pattern520ofFIG. 4. The second area820may have a shape enclosing the first area810, when viewed from above the rear plate211.

According to an embodiment, the first area810may transmit and/or receive a first signal in a first frequency band. The second area820may transmit and/or receive a second signal in a second frequency band different from the first frequency band. For example, the first signal may have a frequency related to MST, and the second signal may have a frequency related to NFC.

According to an example embodiment, an antenna or an antenna system using the antenna structure370may include a first antenna structure in which the first magnetic sheet610and the second magnetic sheet620partially overlap, when viewed from above the rear plate211(e.g., when viewed in +z axis direction) while the first magnetic sheet610is disposed at the first surface370aof the antenna structure370and the second magnetic sheet620is disposed at the second surface370bof the antenna structure370. According to the first antenna structure, the second magnetic sheet620may be disposed closer to the third magnetic sheet700in −y axis direction than the first magnetic sheet610.

According to an example embodiment, an antenna or an antenna system using the antenna structure370may include a second antenna structure in which the third magnetic sheet700is disposed at a third surface211bspaced apart from the second surface370bof the antenna structure370toward the rear plate211and is spaced apart from the first magnetic sheet610with the second magnetic sheet620interposed between the first magnetic sheet610and the second antenna structure, when viewed from above the rear plate211. According to the second antenna structure, when viewed from above the rear plate211, the second magnetic sheet620may include one end portion (e.g., the third portion621ofFIG. 6) partially overlapping with the first magnetic sheet610and the other end portion (e.g., the fourth portion622ofFIG. 6) extended from the one end portion and adjacent to the third magnetic sheet700. According to an example embodiment, the third surface211bmay be formed by the rear plate211. According to the second antenna structure, the first magnetic sheet610and the third magnetic sheet700may be disposed closer to the rear plate211in −z axis direction than the second magnetic sheet620.

According to some embodiments, the first magnetic sheet610may not be disposed at the antenna structure370but may be disposed at the rear plate211(e.g., the third surface211b).

According to an embodiment, when viewed from above the rear plate211, the first magnetic sheet610may be disposed so as not to overlap the second area820. For example, when transmitting and/or receiving a signal of a frequency related to NFC through the second area820, if there is a first magnetic sheet610between the rear plate211and the second area820, a radiation performance through the second area820may be deteriorated because of the first magnetic sheet610; thus, the first magnetic sheet610may be disposed so as not to overlap the second area820for NFC.

According to an example embodiment, when viewed from above the rear plate211, the third magnetic sheet700may be disposed so as not to overlap the second area820to secure a radiation performance for NFC. For example, when transmitting and/or receiving a signal of a frequency related to NFC through the second area820, if there is a third magnetic sheet700between the rear plate211and the second area820, a radiation performance through the second area820may be deteriorated because of the third magnetic sheet700; thus, when viewed from the rear plate211, the third magnetic sheet700may be disposed so as not to overlap the second area820for NFC.

According to various embodiments, the second magnetic sheet620may be extended to overlap at least partially with the second area820, when viewed from above the rear plate211(see reference numeral623). An extended portion623of the second magnetic sheet620may shield noise. For example, noise from the first substrate assembly341ofFIG. 7may be shielded by the extended portion623to be difficult to enter the second area820.

According to various embodiments, the spatial relationship between the second magnetic sheet620and the third magnetic sheet700may be changed by the extended portion623. According to an example embodiment, the extended portion623is involved in a change in characteristics of an electromagnetic field by electromagnetic coupling between the second magnetic sheet620and the third magnetic sheet700to improve a radiation performance.

According to an example embodiment, when an electromagnetic field801is formed from the antenna structure370, electromagnetic coupling between the first magnetic sheet610and the second magnetic sheet620and electromagnetic coupling between the second magnetic sheet620and the third magnetic sheet700may occur. According to an embodiment, the first antenna structure and the second antenna structure may enable electromagnetic energy emitted from the antenna structure370to be concentrated in a specific direction in the space to improve a radiation performance. For example, electromagnetic wave energy emitted from the antenna structure370may be concentrated in a direction (e.g., −z axis direction) in which the first surface370aof the antenna structure370is substantially directed by the first antenna structure and the second antenna structure or in a direction toward the rear plate211or may have directionality or directivity to transmit or receive waves. For example, by forming a preset boundary condition for an electromagnetic field from the antenna structure370by the first antenna structure and the second antenna structure, electromagnetic wave energy may be guided in a specific direction. For example, the first antenna structure and the second antenna structure may spread radio waves emitted from the antenna structure370. For example, because of electromagnetic coupling between the first magnetic sheet610and the second magnetic sheet620, electromagnetic energy that passes through between the first magnetic sheet610and the second magnetic sheet620to be concentrated toward the rear plate211may be formed (see a magnetic field line802). For example, because of electromagnetic coupling between the second magnetic sheet620and the third magnetic sheet700, electromagnetic energy that passes through the second magnetic sheet620and the third magnetic sheet700to be concentrated toward the rear plate211may be formed (see a magnetic field line803).

According to various embodiments, the first antenna structure and the second antenna structure may operate as a reflector that increases radiation in the maximum radiation direction.

According to an example embodiment, the first antenna structure and the second antenna structure reduce a magnetic flux reduced by a peripheral conductive medium such as the first substrate assembly341ofFIG. 7to secure a radiation performance of the antenna structure370. For example, when decrease in magnetic flux reduces, electromagnetic wave energy increases because of an increase in an inductance value, thereby improving a radiation performance.

According to an example embodiment, the first antenna structure and the second antenna structure reduce a loss of electromagnetic energy because of an eddy current generated in peripheral elements (e.g., metal member or integrated circuit) such as the first substrate assembly341ofFIG. 7, thereby securing a radiation performance of the antenna structure370.

According to various embodiments, in a section in which the first magnetic sheet610and the second magnetic sheet620partially overlap in the coil inner area540, a change in characteristics of the electromagnetic field because of electromagnetic coupling between the first magnetic sheet610and the second magnetic sheet620may occur.

According to an embodiment, the third magnetic sheet700may be disposed to be electromagnetically coupled to the second magnetic sheet620. When viewed from above the rear plate211, a distance D1between the third magnetic sheet700and the second magnetic sheet620may be formed so that electromagnetic coupling between the third magnetic sheet700and the second magnetic sheet620is possible. According to various embodiments, the distance D1may be formed based on a wavelength of radio waves emitted from the antenna structure370so that the third magnetic sheet700and the second magnetic sheet620are not electromagnetically isolated.

For example, referring toFIGS. 4 and 5, when viewed from above the first surface370aof the antenna structure370, the coil inner area540may include a first boundary540a, a second boundary540bdisposed at the side opposite to that of the first boundary540a, a third boundary540cconnecting one end portion of the first boundary540aand one end portion of the second boundary540b, and a fourth boundary540dconnecting the other end portion of the first boundary540aand the other end portion of the second boundary540b, and disposed at the side opposite to that of the third boundary540c. In an example embodiment, the first boundary540amay be disposed closer to the first side portion411than the second boundary540b, and the second boundary540bmay be disposed closer to the battery350than the first boundary540a. The third boundary540cmay be disposed closer to the third side portion413than the fourth boundary540d, and the fourth boundary540dmay be disposed closer to the fourth side portion414than the third boundary540c. The first area810(or the first coil portion513) may include a first pattern portion513abetween the first boundary540aand the first side portion411, a second pattern portion513bbetween the second boundary540band the battery350, a third pattern portion513cbetween the third boundary540cand the third side portion413, or a fourth pattern portion513dbetween the fourth boundary540dand the fourth side portion414. According to an embodiment, the second pattern portion513bmay have a first width W extended in a direction (e.g., −y axis direction) advancing from the second boundary540bto the battery350. For example, the first width W may refer, for example, to a width of the first coil portion513in −y axis direction from the coil inner area540. According to an embodiment, referring toFIGS. 5 and 8, when viewed from above the rear plate211, the distance D1may be formed within a length larger by about two times than the first width W. For example, the distance D1may be about 20 mm or less.

According to an embodiment, when the third magnetic sheet700is disposed substantially parallel to the second magnetic sheet620, it may be difficult to secure a radiation performance of the antenna structure370. The third magnetic sheet700and the second magnetic sheet620may be substantially parallel to each other and be spaced apart from each other, but such a disposition structure may result in a loss (e.g., leakage) of electromagnetic energy through electromagnetic coupling between the second magnetic sheet620and the third magnetic sheet700. For example, it may be difficult that two magnetic sheets (e.g., the first magnetic sheet610and the third magnetic sheet700) disposed on the same plane at electromagnetic coupling distances guide electromagnetic energy in a specific direction. According to an example embodiment, the third magnetic sheet700may be closer to the rear plate211in −z axis direction than the second magnetic sheet620and be spaced apart from the first magnetic sheet610in −y axis direction to secure a radiation performance.

According to some embodiments (not illustrated), the first magnetic sheet610is disposed at the first surface370aof the antenna structure370, and the second magnetic sheet620is disposed at the second surface370bof the antenna structure370, but may be disposed so as not to overlap each other to be electromagnetically coupled, when viewed from above the rear plate211.

According to an example embodiment, the first magnetic sheet610, the second magnetic sheet620, and/or the third magnetic sheet700may be implemented with various magnetic materials involved in a magnetic flux or a frequency related to the antenna structure370to improve a radiation performance through the first antenna structure and the second antenna structure. According to various embodiments, the magnetic material may include various conductive materials and/or non-conductive materials having magnetic properties. For example, materials constituting the first magnetic sheet610, the second magnetic sheet620, and/or the third magnetic sheet700may be selected based on a frequency of signals transmitted and/or received through the first area810. According to an embodiment, the first magnetic sheet610, the second magnetic sheet620, and/or the third magnetic sheet700may be made of a material having a relatively high dielectric constant and/or magnetic permeability at a frequency of signals transmitted and/or received through the first area810. According to an embodiment, the first magnetic sheet610, the second magnetic sheet620, and/or the third magnetic sheet700may be made of a material having relatively high electromagnetic shielding characteristics or electromagnetic diffusion characteristics at a frequency of signals transmitted and/or received through the first area810.

For example, the first magnetic sheet610, the second magnetic sheet620, and/or the third magnetic sheet700may be implemented into a nano sheet having a relatively high dielectric constant in a frequency (e.g., about 70 kHz) of about 200 kHz or less related to MST using the first area810. The nano sheet may refer, for example, to a magnetic sheet formed in a thickness of about 100 um or less using a nano grain alloy. The first magnetic sheet610, the second magnetic sheet620, and/or the third magnetic sheet700may be implemented with various other materials. For example, the first magnetic sheet610, the second magnetic sheet620, and/or the third magnetic sheet700may be implemented into a nano sheet or a ferrite sheet.

According to various embodiments, at least two of the first magnetic sheet610, the second magnetic sheet620, and the third magnetic sheet700may be made of different materials.

According to various embodiments, the extended portion623may be implemented into a separate fourth magnetic sheet. A material forming the fourth magnetic sheet may be selected based on a frequency of a signal transmitted and/or received through the second area820. For example, the fourth magnetic sheet may be implemented with a ferrite sheet having a relatively high dielectric constant and/or magnetic permeability at a frequency related to NFC. For example, the fourth magnetic sheet may be made of a material having relatively high electromagnetic shielding characteristics at a frequency related to NFC.

In some embodiments, referring toFIGS. 7 and 8, the first electrical path450and/or the second electrical path460electrically connecting the first substrate assembly341and the second substrate assembly342may be omitted. In this case, the antenna structure370may further include a portion830extended from the second area820so as to be spaced apart from the rear plate211with the third magnetic sheet700interposed between the rear plate211and the portion830. According to an embodiment, the third magnetic sheet700may not be disposed at the rear plate211, but may be disposed at the first surface370ain the extended portion830.

FIG. 9is a cross-sectional view illustrating an example antenna structure370according to another embodiment.

According to various embodiments, a disposition structure illustrated inFIG. 9may be applied to the electronic device200ofFIG. 4 or 7, and some components ofFIG. 4 or 7may be omitted or may be replaced with components ofFIG. 9according to the embodiment. A coordinate axis ofFIG. 9may coincide with the coordinate axis of the electronic device100ofFIG. 4 or 7or may be formed differently from the coordinate axis ofFIG. 4 or 7according to a disposition structure thereof according to various embodiments. This may be equally applied toFIG. 10, 11, 12, 13, or14.

According to an example embodiment, the antenna structure370may include a first area810including the first conductive pattern510ofFIG. 4and a second area820including the second conductive pattern520ofFIG. 4. The second area820may have a shape enclosing the first area810, when viewed from above the rear plate211. The first area810may transmit and/or receive a first signal in the first frequency band. The second area820may transmit and/or receive a second signal in a second frequency band different from the first frequency band. For example, the first signal may have a frequency related to MST, and the second signal may have a frequency related to NFC.

According to an example embodiment, an antenna or an antenna system using the antenna structure370may include a third antenna structure in which a first magnetic sheet910and a second magnetic sheet920partially overlap, when viewed from above the rear plate211while the first magnetic sheet910is disposed at the first surface370aof the antenna structure370and the second magnetic sheet920is disposed at the second surface370bof the antenna structure370. According to the third antenna structure, the first magnetic sheet910may be disposed closer to the third magnetic sheet900than the second magnetic sheet920in −y axis direction.

According to an example embodiment, an antenna or an antenna system using the antenna structure370may include a fourth antenna structure in which the third magnetic sheet900is disposed at a third surface460aseparated from the first surface370aof the antenna structure370toward the front plate202(seeFIG. 7) and is spaced apart from the second magnetic sheet920with the first magnetic sheet910interposed therebetween, when viewed from above the rear plate211. According to the fourth antenna structure, when viewed from above the rear plate, the first magnetic sheet910may include one end portion (e.g., a first portion611ofFIG. 4) partially overlapped with the second magnetic sheet920and the other end portion (e.g., a second portion612ofFIG. 4) extended from the one end portion and adjacent to the third magnetic sheet900. According to an example embodiment, the third surface460amay be formed by the electrical path460. According to the fourth antenna structure, the first magnetic sheet910may be disposed closer to the rear plate211in −z axis direction than the second magnetic sheet920and the third magnetic sheet900.

According to some embodiments, the first magnetic sheet910may not be disposed at the antenna structure370but may be disposed at the rear plate211(e.g., the third surface211b).

According to an embodiment, when viewed from above the rear plate211, the first magnetic sheet910may be disposed so as not to overlap the second area820. For example, when transmitting and/or receiving a signal of a frequency related to NFC through the second area820, if there is a first magnetic sheet910between the rear plate211and the second area820, a radiation performance through the second area820may be deteriorated because of the first magnetic sheet910; thus, the first magnetic sheet910may be disposed so as to not overlap the second area820for NFC.

According to various embodiments, the second magnetic sheet920may be extended to overlap at least partially with the second area820, when viewed from above the rear plate211(see reference numeral923). An extended portion923of the second magnetic sheet920may shield noise. For example, noise from the first substrate assembly341ofFIG. 7may be shielded by the extended portion923to be difficult to enter the second area820.

According to an embodiment, the third antenna structure and the fourth antenna structure illustrated in the embodiment ofFIG. 9may perform substantially the same functions as those of the first antenna structure and the second antenna structure illustrated in the embodiment ofFIG. 8to improve a radiation performance of the antenna structure370. According to an example embodiment, when an electromagnetic field is formed by the antenna structure370, electromagnetic coupling between the first magnetic sheet910and the second magnetic sheet920and electromagnetic coupling between the first magnetic sheet910and the third magnetic sheet900may occur. According to an embodiment, the third antenna structure and the fourth antenna structure may enable electromagnetic energy emitted from the antenna structure370to be concentrated in a specific direction in the space to improve a radiation performance. For example, electromagnetic wave energy emitted from the antenna structure370may be concentrated in a direction (e.g.: −z axis direction) in which the first surface370aof the antenna structure370is substantially directed by the third antenna structure and the fourth antenna structure, or in a direction toward the rear plate211or may have directionality or directivity to transmit or receive waves. For example, by forming a preset boundary condition for an electromagnetic field from the antenna structure370by the third antenna structure and the fourth antenna structure, electromagnetic wave energy may be guided in a specific direction.

According to an embodiment, the third magnetic sheet900may be disposed to be electromagnetically coupled to the first magnetic sheet910. When viewed from above the rear plate211, a distance D2between the third magnetic sheet900and the first magnetic sheet910may be formed so that electromagnetic coupling between the third magnetic sheet900and the first magnetic sheet910is possible. According to various embodiments, the distance D2may be formed based on a wavelength of radio waves emitted from the antenna structure370so that the third magnetic sheet900and the first magnetic sheet910are not electromagnetically isolated.

According to an embodiment, referring toFIGS. 5 and 9, the distance D2may be formed within a length larger by about two times than the first width W in which the second pattern portion513bbetween the first area810or the second boundary540bof the first coil portion513and the battery350has in y-axis direction, when viewed from above the rear plate211. For example, the distance D2may be about 20 mm or less.

According to an embodiment, when the third magnetic sheet900is disposed substantially parallel to the first magnetic sheet910, it may be difficult that a radiation performance of the antenna structure370is secured. The third magnetic sheet900and the first magnetic sheet910may be substantially parallel to each other and be spaced apart from each other, but such a disposition structure may occur a loss (e.g., leakage) of electromagnetic energy through electromagnetic coupling between the first magnetic sheet910and the third magnetic sheet900. According to an example embodiment, the third magnetic sheet900may be closer to the front plate202(seeFIG. 7) in −z axis direction than the first magnetic sheet910and be spaced apart from the second magnetic sheet920in −y axis direction to secure a radiation performance.

In some embodiments, an electrical path460may be omitted. In this case, the antenna structure370may further include a portion830extended to be spaced apart from the rear plate211with the third magnetic sheet900interposed therebetween. According to an example embodiment, the third magnetic sheet900may be disposed at the first surface370ain the extended portion830.

According to an example embodiment, the first magnetic sheet910, the second magnetic sheet920, and/or the third magnetic sheet900may be implemented with various magnetic materials involved in a magnetic flux or a frequency related to the antenna structure370to improve a radiation performance through the third antenna structure and the fourth antenna structure. According to an embodiment, the third antenna structure and the fourth antenna structure illustrated in the embodiment ofFIG. 9may be different in the spatial relationship between the first antenna structure and the second antenna structure and the plurality of magnetic sheets illustrated in the embodiment ofFIG. 8, and the magnetic sheet ofFIG. 9(e.g., the first magnetic sheet910, the second magnetic sheet920, and/or the third magnetic sheet900) may be implemented with substantially the same material as that of the magnetic sheet (e.g., the first magnetic sheet610, the second magnetic sheet620, and/or the third magnetic sheet700) ofFIG. 8.

FIG. 10is a cross-sectional view illustrating an example antenna structure370according to an embodiment.

According to various embodiments, a disposition structure illustrated inFIG. 10may be applied to the electronic device200ofFIG. 4 or 7, and some components ofFIG. 4 or 7may be omitted or may be replaced with components ofFIG. 10according to the embodiment.

Referring toFIG. 10, an antenna or an antenna system using the antenna structure370may include a fifth antenna structure in which a first magnetic sheet1010and a second magnetic sheet1020partially overlap, when viewed from above the rear plate211while the first magnetic sheet1010(e.g., the first magnetic sheet910ofFIG. 9) is disposed at a first surface370aof the antenna structure370and the second magnetic sheet1020(e.g., the second magnetic sheet920ofFIG. 9) is disposed at the second surface370bof the antenna structure370. An antenna or an antenna system using the antenna structure370may include a sixth antenna structure in which a third magnetic sheet1000is disposed closer (e.g., the third surface460a) to the front plate202(seeFIG. 7) in +z axis direction than the first magnetic sheet1010and is spaced apart from the second magnetic sheet1020in −y axis direction with the first magnetic sheet1010interposed therebetween, when viewed from above the rear plate211. According to the sixth antenna structure, when viewed from above the rear plate211, the first magnetic sheet1010may include one end portion (e.g., the first portion611ofFIG. 4) that partially overlaps with the second magnetic sheet1020and the other end portion (e.g., the second portion612ofFIG. 4) extended from the one end portion and adjacent to the third magnetic sheet1000. According to an example embodiment, the third surface460amay be formed by the electrical path460. According to the sixth antenna structure, the first magnetic sheet910may be disposed closer to the rear plate211in −y axis direction than the second magnetic sheet920and the third magnetic sheet900.

According to various embodiments, compared to the embodiment ofFIG. 9, the third magnetic sheet1000may partially cover the second surface370bof the antenna structure370to be extended to overlap the second area820of the antenna structure370, when viewed from above the rear plate211. For example, the third surface460ain which the third magnetic sheet1000is disposed may be disposed farther than the rear plate211in +z axis direction than the first surface370ain which the first magnetic sheet1000is disposed. According to various embodiments, an extended portion1023may shield noise. For example, noise from the first substrate assembly341ofFIG. 7may be shielded by the extended portion1023to be difficult to enter the second area820.

According to various embodiments, the spatial relationship between the first magnetic sheet1010and the third magnetic sheet1000may be changed by the extended portion1023. The extended portion1023may participate in a change in characteristics of an electromagnetic field by electromagnetic coupling between the first magnetic sheet1010and the third magnetic sheet1000to improve a radiation performance.

According to various embodiments, the third magnetic sheet1000may be further extended to overlap a portion of the first area810of the antenna structure370, when viewed from above the rear plate211(see reference numeral1024). When viewed from above the rear plate211, the first magnetic sheet1010and the third magnetic sheet1000may partially overlap by the extended portion1024. The extended portion1024may participate in a change in characteristics of an electromagnetic field by electromagnetic coupling between the first magnetic sheet1010and the third magnetic sheet1000to improve a radiation performance. According to an example embodiment, when viewed from above the rear plate211, a distance D3between the extended portion1024and the second magnetic sheet1020may be formed so that the second magnetic sheet1020and the third magnetic sheet1000are electromagnetically isolated. When the second magnetic sheet1020and the third magnetic sheet1000are not electromagnetically isolated, a loss (e.g., leakage) of electromagnetic energy may occur through electromagnetic coupling between the second magnetic sheet1020and the third magnetic sheet1000. For example, the second magnetic sheet1020and the third magnetic sheet1000may be disposed substantially parallel in y-axis direction and be spaced apart from each other. It may be difficult that the two magnetic sheets1020and1000disposed at substantially parallel and electromagnetically coupled distances guide electromagnetic energy in a specific direction. According to an embodiment, the distance D3may be formed based on a wavelength of radio waves emitted from the antenna structure370.

FIG. 11is a cross-sectional view illustrating an example antenna structure1170according to various embodiments.

According to various embodiments, a disposition structure illustrated inFIG. 11may be applied to the electronic device200ofFIG. 4 or 7, and some components ofFIG. 4 or 7may be omitted or may be replaced with components ofFIG. 11according to the embodiment.

According to an embodiment, the antenna structure1170may be implemented in the form in which the second area820is omitted in the antenna structure370ofFIG. 8. For example, the antenna structure1170may have the form of an FPCB including the first conductive pattern510ofFIG. 5. According to an example embodiment, the antenna structure1170may transmit and/or receive a signal of a frequency related to MST.

According to an example embodiment, an antenna or an antenna system using the antenna structure1170may include a seventh antenna structure in which a first magnetic sheet1110and a second magnetic sheet1120partially overlap, when viewed from above the rear plate211while the first magnetic sheet1110(e.g., the first magnetic sheet610ofFIG. 8) is disposed at a first surface1170a(e.g., the first surface310aofFIG. 8) of the antenna structure1170and the second magnetic sheet1120(e.g., the second magnetic sheet620ofFIG. 8) is disposed at a second surface1170b(e.g., the second surface310bofFIG. 8) of the antenna structure1170. According to the seventh antenna structure, the second magnetic sheet1120may be disposed closer to the third magnetic sheet1100in −y axis direction than the first magnetic sheet1110.

According to an example embodiment, an antenna or an antenna system using the antenna structure1170may include an eighth antenna structure in which the third magnetic sheet1100is disposed closer (e.g., the third surface211b) to the rear plate211in −z axis direction than the second surface1170bof the antenna structure1170and is spaced apart in −y axis direction from the first magnetic sheet1110with the second magnetic sheet1120interposed therebetween, when viewed from above the rear plate211. According to the eighth antenna structure, the second magnetic sheet1120may include one end portion (e.g., the third portion621ofFIG. 6) partially overlapped with the first magnetic sheet1110and the other end portion (e.g., the fourth portion622ofFIG. 6) extended from the one end portion and adjacent to the third magnetic sheet1100, when viewed from above the rear plate. According to an example embodiment, the third surface211bmay be formed by the rear plate211. According to the eighth antenna structure, the first magnetic sheet1110and the third magnetic sheet1100may be disposed closer to the rear plate211in −z axis direction than the second magnetic sheet1120.

According to some embodiments, the first magnetic sheet1110may not be disposed at the antenna structure1170, but may be disposed at the rear plate211.

According to an embodiment, the seventh antenna structure and the eighth antenna structure illustrated in the embodiment ofFIG. 11may perform substantially the same functions as those of the first antenna structure and the second antenna structure illustrated in the embodiment ofFIG. 8to improve a radiation performance of the antenna structure1170. According to an embodiment, when an electromagnetic field is formed from the antenna structure1170, electromagnetic coupling between the first magnetic sheet1110and the second magnetic sheet1120and electromagnetic coupling between the first magnetic sheet1110and the third magnetic sheet1100may occur.

According to an embodiment, the seventh antenna structure and the eighth antenna structure may enable electromagnetic energy emitted from the antenna structure1170to be concentrated in a specific direction in the space to improve a radiation performance. For example, electromagnetic wave energy emitted from the antenna structure1170may be concentrated in a direction (e.g.: −z axis direction) in which the first surface1170aof the antenna structure1170is substantially directed by the seventh antenna structure and the eighth antenna structure or in a direction toward the rear plate211or may have directionality or directivity to transmit or receive waves. For example, by forming a preset boundary condition for an electromagnetic field from the antenna structure1170by the seventh antenna structure and the eighth antenna structure, electromagnetic wave energy may be guided in a specific direction.

According to an embodiment, the third magnetic sheet1100may be disposed to be electromagnetically coupled to the second magnetic sheet1120. When viewed from above the rear plate211, a distance D4between the third magnetic sheet1100and the second magnetic sheet1120may be formed so that electromagnetic coupling between the third magnetic sheet1100and the second magnetic sheet1120is possible. According to various embodiments, the distance D4may be formed based on a wavelength of radio waves emitted from the antenna structure1170so that the third magnetic sheet1100and the second magnetic sheet1120are not electromagnetically isolated.

According to an embodiment, referring toFIGS. 5 and 11, the distance D4may be formed within a length larger by about two times than the first width W in which the second pattern portion513bbetween the second boundary540bof the first coil portion513and the battery350has in y-axis direction, when viewed from above the rear plate211. For example, the distance D4may be about 20 mm or less.

According to various embodiments, the third magnetic sheet1100may be extended in a range that does not overlap the second magnetic sheet1120, when viewed from above the rear plate211(see reference numeral1123). According to various embodiments, when viewed from above the rear plate211, the third magnetic sheet1100may be extended to be spaced apart from the first magnetic sheet1110while partially overlapping the second magnetic sheet1120(see reference numeral1124). The spatial relationship between the first magnetic sheet1110and the third magnetic sheet1100may be changed, for example, by the extended portion1123or1124. The extended portion1123or1124may participate in a change in characteristics of an electromagnetic field by electromagnetic coupling between the second magnetic sheet1120and the third magnetic sheet1100to improve a radiation performance.

According to various embodiments, when the third magnetic sheet1100is extended as indicated by reference numeral1124, a distance D5between the extended portion1124and the first magnetic sheet1110may be formed so that the first magnetic sheet1110and the third magnetic sheet1100are electromagnetically isolated. When the first magnetic sheet1110and the third magnetic sheet1100are not electromagnetically isolated, a loss (e.g., leakage) of electromagnetic energy may occur through electromagnetic coupling between the first magnetic sheet1110and the third magnetic sheet1100. For example, the first magnetic sheet1110and the third magnetic sheet1100may be disposed substantially parallel and spaced apart from each other. It may be difficult that the two magnetic sheets1110and1100disposed at substantially parallel and electromagnetically coupled distances guide electromagnetic energy in a specific direction. According to an embodiment, the distance D5may be formed based on a wavelength of radio waves emitted from the antenna structure1170.

In some embodiments, the electrical path460may be omitted. In this case, the antenna structure1170may further include a portion1130extended to be spaced apart from the rear plate211with the third magnetic sheet1100interposed therebetween. According to an embodiment, the third magnetic sheet1100may be disposed at the first surface1170ain the extended portion1130.

According to an example embodiment, the first magnetic sheet1110, the second magnetic sheet1120, and/or the third magnetic sheet1100may be implemented with various magnetic materials (e.g., nano sheet or ferrite sheet) involved in a magnetic flux or a frequency related to the antenna structure1170to improve a radiation performance through the seventh antenna structure and the eighth antenna structure.

FIG. 12is a cross-sectional view illustrating an example antenna structure1270according to various embodiments.

According to various embodiments, a disposition structure illustrated inFIG. 12may be applied to the electronic device200ofFIG. 4 or 7, and some components ofFIG. 4 or 7may be omitted or may be replaced with components ofFIG. 12according to the embodiment.

According to an embodiment, the antenna structure1270may be implemented in the form in which the second area820is omitted from the antenna structure370ofFIG. 8. For example, the antenna structure1270may have the form of an FPCB including the first conductive pattern510ofFIG. 5. According to an embodiment, the antenna structure1270may transmit and/or receive a signal of a frequency related to MST.

According to an example embodiment, an antenna or an antenna system using the antenna structure1270may include a ninth antenna structure in which the first magnetic sheet1210and the second magnetic sheet1220partially overlap, when viewed from above the rear plate211while the first magnetic sheet1210is disposed at a first surface1270aof the antenna structure1270and the second magnetic sheet1220is disposed at a second surface1270bof the antenna structure1270. According to the ninth antenna structure, the first magnetic sheet1210may be disposed closer to the third magnetic sheet1200in −y axis direction than the second magnetic sheet1220.

According to an example embodiment, an antenna or an antenna system using the antenna structure1270may include a tenth antenna structure in which the third magnetic sheet1200is disposed closer (e.g., the third surface460a) to the front plate202(seeFIG. 7) in +z axis direction than the first surface1270aof the antenna structure1270and is spaced apart from the second magnetic sheet1220in −y axis direction with the first magnetic sheet1210interposed therebetween, when viewed from above the rear plate211. According to the tenth antenna structure, the first magnetic sheet1210may include one end portion (e.g., the first portion611ofFIG. 4) partially overlapping with the second magnetic sheet1220and the other end portion (e.g., the second portion612ofFIG. 4) extended from the one end portion to be adjacent to the third magnetic sheet1200, when viewed from above the rear plate211. According to an example embodiment, the third surface460amay be formed by the electrical path460. According to the tenth antenna structure, the first magnetic sheet1210may be disposed closer to the rear plate211in −z axis direction than the second magnetic sheet1220and the third magnetic sheet1200.

According to some embodiments, the first magnetic sheet1210may not be disposed at the antenna structure1270, but may be disposed at the rear plate211.

According to an embodiment, the ninth antenna structure and the tenth antenna structure illustrated in the embodiment ofFIG. 12may perform substantially the same functions as those of the third antenna structure and the fourth antenna structure illustrated in the embodiment ofFIG. 9to improve a radiator performance of the antenna structure1270. According to an example embodiment, when an electromagnetic field is formed from the antenna structure1270, electromagnetic coupling between the first magnetic sheet1210and the second magnetic sheet1220and electromagnetic coupling between the first magnetic sheet1210and the third magnetic sheet1200may occur.

According to an embodiment, the ninth antenna structure and the tenth antenna structure may enable electromagnetic energy emitted from the antenna structure1270to be concentrated in a specific direction in the space to improve a radiation performance. For example, electromagnetic wave energy emitted from the antenna structure1270may be concentrated in a direction (e.g., −z axis direction) in which a first surface1270aof the antenna structure1270is substantially directed by the ninth antenna structure and the tenth antenna structure or in a direction toward the rear plate211or may have directionality or directivity to transmit or receive waves. For example, by forming a preset boundary condition for an electromagnetic field from the antenna structure1270by the ninth antenna structure and the tenth antenna structure, electromagnetic wave energy may be guided in a specific direction.

According to an embodiment, the third magnetic sheet1200may be disposed to be electromagnetically coupled to the first magnetic sheet1210. When viewed from above the rear plate211, a distance D6between the third magnetic sheet1200and the first magnetic sheet1210may be formed so that electromagnetic coupling between the third magnetic sheet1200and the first magnetic sheet1210is possible. According to various embodiments, the distance D6may be formed based on a wavelength of radio waves emitted from the antenna structure1270so that the third magnetic sheet1200and the first magnetic sheet1210are not electromagnetically isolated.

According to an embodiment, referring toFIGS. 5 and 12, when viewed from above the rear plate211, the distance D6may be formed within a length larger by about two times than the first width W in which the second pattern portion513bbetween the battery350and a second boundary540bof the first coil portion513has in a y-axis direction. For example, the distance D2may be about 20 mm or less.

According to various embodiments, when viewed from above the rear plate211, the third magnetic sheet1200may partially cover the second surface1270bof the antenna structure1270to be extended to partially overlap the first magnetic sheet1210(see reference numeral1203). The spatial relationship between the first magnetic sheet1210and the third magnetic sheet1200may be changed, for example, by the extended portion1203. The extended portion1203may participate in a change in characteristics of an electromagnetic field by electromagnetic coupling between the first magnetic sheet1210and the third magnetic sheet1200to improve a radiation performance. According to an example embodiment, when viewed from above the rear plate211, a distance D7between the extended portion1203and the second magnetic sheet1220may be formed so that the second magnetic sheet1220and the third magnetic sheet1200are electromagnetically isolated. When the second magnetic sheet1220and the third magnetic sheet1200are not electromagnetically isolated, a loss (e.g., leakage) of electromagnetic energy may occur through electromagnetic coupling between the second magnetic sheet1220and the third magnetic sheet1200. For example, it may be difficult that the two magnetic sheets1220and1200disposed at substantially parallel and electromagnetically coupled distances guide electromagnetic energy in a particular direction. According to an embodiment, the distance D7may be formed based on a wavelength of radio waves emitted from the antenna structure1270.

In some embodiments, an electrical path460may be omitted. In this case, the antenna structure1270may further include a portion1230extended to be spaced apart from the rear plate211with the third magnetic sheet1200interposed therebetween. According to an embodiment, the third magnetic sheet1200may be disposed at the first surface1270ain the extended portion1230.

According to an example embodiment, the first magnetic sheet1210, the second magnetic sheet1220, and/or the third magnetic sheet1200may be implemented with various magnetic materials (e.g., nano sheet or ferrite sheet) involving in a magnetic flux or a frequency related to the antenna structure1270to improve a radiation performance through the first antenna structure and the second antenna structure.

FIG. 13is a cross-sectional view illustrating an example antenna structure1370according to various embodiments.

According to various embodiments, a disposition structure illustrated inFIG. 13may be applied to the electronic device200ofFIG. 4 or 7, and some components ofFIG. 4 or 7may be omitted or may be replaced with the components ofFIG. 13according to the embodiment.

According to an embodiment, the antenna structure1370may be implemented in the form in which the second area820is omitted from the antenna structure370ofFIG. 8. For example, the antenna structure1370may have the form of an FPCB including the first conductive pattern510ofFIG. 5. According to an embodiment, the antenna structure1370may transmit and/or receive a signal related to power.

According to an embodiment, a first magnetic sheet1310may be disposed at the antenna structure1370. A second magnetic sheet1320and a third magnetic sheet1330may be disposed at the rear plate211. For example, the first magnetic sheet1310may be disposed at one surface of the antenna structure1370spaced apart from the rear plate211in +z axis direction.

According to various embodiments, the second magnetic sheet1320and the third magnetic sheet1330may be implemented into an integral sheet. According to various embodiments, the first conductive pattern510ofFIG. 5included in the antenna structure1370may be implemented in a circular coil shape or a rectangular coil shape. For example, when the first conductive pattern510is in the form of a circular coil, when viewed from above the rear plate211, the first magnetic sheet1310may be circular. As another example, when the first conductive pattern510is in the form of a square coil, the first magnetic sheet1310may be square. The second magnetic sheet1320and the third magnetic sheet1330may be implemented in an integral ring shape.

According to various embodiments, the second magnetic sheet1320and the third magnetic sheet1330may be physically separated from each other. For example, at least a portion of the second magnetic sheet1320and at least a portion of the third magnetic sheet1330may be disposed at both sides with the first magnetic sheet1310interposed therebetween, when viewed from above the rear plate211. The antenna structure370may be implemented, for example, in the form in which the second conductive pattern520is omitted from the antenna structure370ofFIG. 5. In an example embodiment, referring toFIGS. 5 and 13, at least a portion of the second magnetic sheet1320may be spaced apart from the coil inner area540with the first pattern portion513ainterposed therebetween, and at least a portion of the third magnetic sheet1330may be spaced apart from the coil inner area540with the second pattern portion513binterposed therebetween. In another embodiment, referring toFIGS. 5 and 13, at least a portion of the second magnetic sheet1320may be spaced apart from the coil inner area540with the third pattern portion513cinterposed therebetween, and at least a portion of the third magnetic sheet1330may be spaced apart from the coil inner area540with the fourth pattern portion513dinterposed therebetween.

According to an example embodiment, when an electromagnetic field is formed from the antenna structure1370, electromagnetic coupling between the first magnetic sheet1310and the second magnetic sheet1320and electromagnetic coupling between the first magnetic sheet1310and the third the magnetic sheet1330may occur. The second magnetic sheet1320and the third magnetic sheet1330may be disposed to be electromagnetically coupled to the first magnetic sheet1310.

According to an example embodiment, an antenna or an antenna system using the antenna structure1370may include an antenna structure in which the first magnetic sheet1310is disposed farther from the rear plate211in +z axis direction than the second magnetic sheet1320and the third magnetic sheet1330. According to an embodiment, the antenna structure may enable electromagnetic energy emitted from the antenna structure1370to be concentrated in a specific direction in the space to improve a radiation performance. For example, electromagnetic energy emitted from the antenna structure1370may be substantially concentrated in a direction toward the rear plate211by the antenna structure, or may have directionality or directivity capable of transmitting or receiving waves. For example, by forming a preset boundary condition for an electromagnetic field from the antenna structure1370by the antenna structure, electromagnetic wave energy may be guided in a specific direction.

According to various embodiments, when viewed from above the rear plate211, the second magnetic sheet1320may be extended between the antenna structure1370and the rear plate211so as to partially overlap the first magnetic sheet1310(see reference numeral1321). The extended portion1321may participate in a change in characteristics of an electromagnetic field by electromagnetic coupling between the first magnetic sheet1310and the second magnetic sheet1320to improve a radiation performance.

According to various embodiments, the third magnetic sheet1330may be extended between the antenna structure1370and the rear plate211so as to partially overlap the first magnetic sheet1310, when viewed from above the rear plate211(see reference numeral1331). The extended portion1331may participate in a change in characteristics of an electromagnetic field by electromagnetic coupling between the first magnetic sheet1310and the third magnetic sheet1330to improve a radiation performance.

According to various embodiments, when viewed from above the rear plate211, the extended portions1331and1321may be disposed at an electromagnetically isolated distance. When the extended portions1331and1321are not electromagnetically isolated, a loss (e.g., leakage) of electromagnetic energy may occur through electromagnetic coupling between the extended portions1331and1321.

In various embodiments, the antenna structure1370may further include a portion1341extended to be spaced apart from the rear plate211with the second magnetic sheet1320interposed therebetween. According to various embodiments, the second magnetic sheet1320may be disposed at the extended portion1341.

In various embodiments, the antenna structure1370may further include a portion1342extended to be spaced apart from the rear plate211with the third magnetic sheet1330interposed therebetween. According to various embodiments, the third magnetic sheet1330may be disposed at the extended portion1342.

According to an example embodiment, the first magnetic sheet1310, the second magnetic sheet1320, and/or the third magnetic sheet1330may be implemented with various magnetic materials (e.g., nano sheet or ferrite sheet) involved in a magnetic flux or a frequency related to the antenna structure1370to improve a radiation performance through the first antenna structure and the second antenna structure.

According to various embodiments, the antenna structure1370may be disposed on the battery350in the electronic device200ofFIG. 4. The second magnetic sheet1320or the third magnetic sheet1330ofFIG. 13may be used as an antenna structure for improving a radiation performance of the antenna structure370ofFIG. 4. In this case, a shape of the third magnetic sheet700ofFIG. 4may be changed or omitted. According to various embodiments, the antenna structure1370ofFIG. 13may be implemented into a one-piece FPCB with the antenna structure370ofFIG. 4.

FIG. 14is a cross-sectional view illustrating an example antenna structure1470according to various embodiments.

According to various embodiments, a disposition structure illustrated inFIG. 14may be applied to the electronic device200ofFIG. 4 or 7, and some components ofFIG. 4 or 7may be omitted or may be replaced with components ofFIG. 14according to the embodiment.

According to various embodiments, the embodiment ofFIG. 14may implement the antenna structure1370ofFIG. 13in another form. For example, the antenna structure1470may have a shape similar to or the same shape as that of the antenna structure370ofFIG. 5, and include a first area1471(e.g., the first area810ofFIG. 8) including a first conductive pattern and a second area1472(e.g., the second area820ofFIG. 8) including the second conductive pattern. The second area1472may have a shape enclosing the first area1471, when viewed from above the rear plate211. According to an embodiment, the first area1471may transmit and/or receive a signal related to power through the first conductive pattern. According to an embodiment, the second area1472may transmit and/or receive a signal related to NFC through the second conductive pattern.

For example, when transmitting and/or receiving a signal of a frequency related to NFC through the second area1472, if there is a conductive medium between the rear plate211and the second area1472, a radiation performance through the second area1472may be deteriorated because of the conductive medium. According to an example embodiment, when viewed from above the rear plate211(e.g., when viewed in +z axis direction), a second magnetic sheet1420and a third magnetic sheet1430may be disposed so as to not overlap the second area1472of the antenna structure1470to secure a radiation performance related to NFC.

According to an example embodiment of the disclosure, an electronic device (e.g., the electronic device200ofFIG. 7) may include: a housing (e.g., the housing210ofFIG. 2A) including a front plate (e.g., the front plate202ofFIG. 7) and a rear plate (e.g., the rear plate211ofFIG. 7) opposite the front plate. The electronic device may include a display (e.g., the display201ofFIG. 7) disposed in a space between the front plate and the rear plate and viewable through at least a portion of the front plate. The electronic device may include an antenna structure (e.g., the antenna structure370ofFIG. 7) having a first surface (e.g., the first surface370aofFIG. 7) facing the rear plate in the space and a second surface (e.g., the second surface370bofFIG. 7) facing a direction opposite the first surface and including at least one coil (e.g., the first conductive pattern510and the second conductive pattern520ofFIG. 5) configured to transmit and/or receive a signal of a selected or designated frequency. The electronic device may include a first magnetic sheet (e.g., the first magnetic sheet610ofFIG. 7) disposed at the first surface. When viewed from above the rear plate, the electronic device may include a second magnetic sheet (e.g., the second magnetic sheet620ofFIG. 7) at least partially overlapping the first magnetic sheet and disposed at the second surface. The electronic device may include a third magnetic sheet (e.g., the third magnetic sheet700ofFIG. 7 or 8) disposed closer to the rear plate than the second surface, and spaced apart from the first magnetic sheet to have electromagnetically designated isolation with the first magnetic sheet with the second magnetic sheet interposed therebetween, when viewed from above the rear plate.

According to an example embodiment of the disclosure, the third magnetic sheet (e.g., the third magnetic sheet700ofFIG. 8) may not overlap the second magnetic sheet (e.g., the second magnetic sheet620ofFIG. 8), when viewed from above the rear plate (e.g., the rear plate211ofFIG. 8).

According to an example embodiment of the disclosure, the third magnetic sheet (e.g., the third magnetic sheet1100ofFIG. 11) may overlap the second magnetic sheet (e.g., the second magnetic sheet1120ofFIG. 11), when viewed from above the rear plate (e.g., the rear plate211ofFIG. 11) (see reference numeral1124ofFIG. 11).

According to an example embodiment of the disclosure, the antenna structure (e.g., the antenna structure370ofFIG. 5) may comprise a flexible printed circuit (FPCB).

According to an example embodiment of the disclosure, the third magnetic sheet (e.g., the third magnetic sheet700ofFIG. 8) may be disposed at the rear plate (e.g., the rear plate211ofFIG. 8).

According to an example embodiment of the disclosure, the third magnetic sheet (e.g., the third magnetic sheet700ofFIG. 8) may be disposed at the first surface (e.g., the first surface370aofFIG. 8) of the antenna structure (e.g., the antenna structure370ofFIG. 8) (see reference numeral830ofFIG. 8).

According to an example embodiment of the disclosure, the electronic device may further include a battery (e.g., the battery350ofFIG. 4 or 7) disposed in the space and an FPCB (e.g., the first electrical path450or the second electrical path460ofFIG. 4) disposed across the battery between the battery and the rear plate (e.g., the rear plate211ofFIG. 7). The third magnetic sheet (e.g., the third magnetic sheet700ofFIG. 4 or 7) may at least partially overlap the FPCB, when viewed from above the rear plate.

According to an example embodiment of the disclosure, the electronic device may further include a first substrate assembly (e.g., the first substrate assembly341ofFIG. 3) and a second substrate assembly (e.g., the second substrate assembly342ofFIG. 3) disposed in the space, spaced apart from each other with the battery (e.g., the battery350ofFIG. 4) interposed therebetween, and electrically connected through the FPCB (e.g., the first electrical path450or the second electrical path460ofFIG. 4), when viewed from above the rear plate (e.g., the rear plate211ofFIG. 7). The antenna structure (e.g., the antenna structure370ofFIG. 4) may be disposed to at least partially overlap the first substrate assembly, when viewed from above the rear plate.

According to an example embodiment of the disclosure, the antenna structure (e.g., the antenna structure370ofFIG. 8) may include a first area (e.g., the first area810ofFIG. 8) including a first coil (e.g., the first conductive pattern510ofFIG. 5) and a second area (e.g., the second area820ofFIG. 8) including a second coil (e.g., the second conductive pattern520ofFIG. 5), the second coil enclosing the first area, when viewed from above the rear plate (e.g., the rear plate211ofFIG. 8).

According to an example embodiment of the disclosure, the first coil (e.g., the first conductive pattern510ofFIG. 5) may transmit and/or receive a first signal having a frequency related to magnetic secure transmission (MST) or wireless power. The second coil (e.g., the second conductive pattern520ofFIG. 5) may transmit and/or receive a second signal having a frequency related to near field communication (NFC).

According to an example embodiment of the disclosure, the first magnetic sheet (e.g., first magnetic sheet610ofFIG. 4) and the second magnetic sheet (e.g., the second magnetic sheet620ofFIG. 6) may overlap each other in the first area (e.g., the first area810ofFIG. 8).

According to an example embodiment of the disclosure, an electronic device (e.g., the electronic device200ofFIG. 2A) may include: a housing (e.g., the housing210ofFIG. 2A) including a front plate (e.g., the front plate202ofFIG. 3) and a rear plate (e.g., the rear plate211ofFIG. 3) disposed opposite the front plate. The electronic device may include a display (e.g., the display201ofFIG. 3) disposed in a space between the front plate and the rear plate and viewable through at least a portion of the front plate. The electronic device may include an antenna structure (e.g., the antenna structure370ofFIG. 9) including at least one coil (e.g., the first conductive pattern510or the second conductive pattern520ofFIG. 5) having a first surface (e.g., the first surface370aofFIG. 9) facing the rear plate in the space and a second surface (e.g., the second surface370bofFIG. 9) facing in a direction opposite the first surface, the antenna structure configured to transmit and/or receive a signal of a selected or designated frequency. The electronic device may include a first magnetic sheet (e.g., the first magnetic sheet910ofFIG. 9) disposed at the first surface. The electronic device may include a second magnetic sheet (e.g., the second magnetic sheet920ofFIG. 9) at least partially overlapping the first magnetic sheet and disposed at the second surface, when viewed from above the rear plate. The electronic device may include a third magnetic sheet (e.g., the third magnetic sheet900ofFIG. 9) disposed closer to the front plate than the first surface, and spaced apart from the second magnetic sheet to have electromagnetically designated isolation with the second magnetic sheet with the first magnetic sheet interposed therebetween, when viewed from above the rear plate.

According to an example embodiment of the disclosure, the third magnetic sheet (e.g., the third magnetic sheet900ofFIG. 9) may not overlap the first magnetic sheet (e.g., the first magnetic sheet910ofFIG. 9), when viewed from above the rear plate (e.g., the rear plate211ofFIG. 9).

According to an example embodiment of the disclosure, the third magnetic sheet (e.g., the third magnetic sheet1000ofFIG. 10) may overlap the first magnetic sheet (e.g., the first magnetic sheet1010ofFIG. 10), when viewed from above the rear plate (e.g., the rear plate211ofFIG. 10).

According to an example embodiment of the disclosure, the electronic device may further include a battery (e.g., the battery350ofFIG. 10) disposed in the space and an FPCB (e.g., the first electrical path450or the second electrical path460ofFIG. 4) disposed across the battery between the battery and the rear plate (e.g., the rear plate211ofFIG. 3). The third magnetic sheet (e.g., the third magnetic sheet900ofFIG. 9) may at least partially overlap the FPCB, when viewed from above the rear plate.

According to an example embodiment of the disclosure, the third magnetic sheet (e.g., the third magnetic sheet900ofFIG. 9) may be disposed at the FPCB (e.g., the electrical path460ofFIG. 4).

According to an example embodiment of the disclosure, the third magnetic sheet (e.g., the third magnetic sheet900ofFIG. 9) may be disposed at the second surface (e.g., the second surface370bofFIG. 9) of the antenna structure (e.g., the antenna structure370ofFIG. 9) (see reference numeral830ofFIG. 9).

According to an example embodiment of the disclosure, the antenna structure (e.g., the antenna structure370ofFIG. 9) may include a first area (e.g., the first area810ofFIG. 9) including a first coil (e.g., the first conductive pattern510ofFIG. 5) and a second area (e.g., the second area820ofFIG. 9) including a second coil (e.g., the second conductive pattern520ofFIG. 5), the second coil enclosing the first area, when viewed from above the rear plate (e.g., the rear plate211ofFIG. 9).

According to an example embodiment of the disclosure, an electronic device (e.g., the electronic device200ofFIG. 2A) may include: a housing (e.g., the housing210ofFIG. 2A) including a front plate (e.g., the front plate202ofFIG. 3) and a rear plate (e.g., the rear plate211ofFIG. 3) disposed opposite the front plate. The electronic device may include a display (e.g., the display201ofFIG. 3) disposed in a space between the front plate and the rear plate and at least partially disposed along the front plate. The electronic device may include a flexible printed circuit board (FPCB) (e.g., the antenna structure1370ofFIG. 13) including at least one coil having a first surface facing the rear plate in the space and a second surface facing a direction opposite the first surface, the FPCB configured to transmit and/or receive a signal of a selected or designated frequency. The electronic device may include a first magnetic sheet (e.g., the first magnetic sheet1310ofFIG. 13) disposed at the second surface. The electronic device may include a second magnetic sheet (e.g., the second magnetic sheet1320ofFIG. 13) and a third magnetic sheet (e.g., the third magnetic sheet1330ofFIG. 13) disposed closer to the rear plate than the first surface and spaced apart from each other with the first magnetic sheet interposed therebetween, when viewed from above the rear plate.

According to various example embodiments of the disclosure, by disposing a helical antenna (e.g., helical conductive pattern) near the rear plate and a plurality of magnetic sheets around the helical antenna in order to absorb and/or shield noise from outside, a radiation performance of the helical antenna can be secured. Further, even if a size of the helical antenna is reduced, a radiation performance of the helical antenna can be secured because of an electromagnetic interaction between the plurality of magnetic sheets. Because a size of the helical antenna can be reduced while securing a radiation performance, it can be easy to secure a space occupied by the battery in order to increase a battery capacity or to slim the electronic device.