Electronic device, method, and non-transitory computer-readable storage medium for identifying antenna state on basis of reflection coefficient

Abstract

According to an embodiment disclosed herein, an electronic device (101) comprises: one or more antennas (240); a radio frequency (RF) circuit (250) connected to the one or more antennas; one or more processors (120) including processing circuitry; and a memory (130) for storing instructions. When individually or collectively executed by the one or more processors, the instructions cause the electronic device to: control the RF circuit on the basis of a first frequency band so that a first RF signal is provided to a first antenna among the one or more antennas; identify a reflected signal, corresponding to the first RF signal, received via a coupler connected to the first antenna; identify a reflection coefficient corresponding to the first frequency band on the basis of the first RF signal and the reflected signal in order to determine a grip state; identify a first offset corresponding to the first frequency band on the basis of first association information about associations between a plurality of frequency bands and a plurality of offsets; identify a first adjusted reflection coefficient by adding the first offset to the identified reflection coefficient; identify a first scaling factor corresponding to the first frequency band on the basis of second association information about associations between the plurality of frequency bands and a plurality of scaling factors; identify a second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor; and determine whether a state associated with the first antenna is the grip state on the basis of whether the magnitude of the second adjusted reflection coefficient is less than or equal to a threshold. Other embodiments are also possible.

Description

Electronic device, method, and non-transitory computer-readable storage medium for determining antenna status based on reflection coefficient

[0001] The present disclosure relates to an electronic device, a method, and a non-transitory computer-readable storage medium for determining an antenna condition based on a reflection coefficient.

[0002] Recently, with the development of mobile communication technology, the use of mobile terminals providing various functions has become widespread, and to meet the increasing demand for wireless data traffic, the 5th generation (5G) th Efforts are being made to develop a 5G (fifth generation) communication system. 5G communication systems are designed to provide faster data transmission speeds to achieve higher data rates than the 3rd generation (3G). rd In addition to the frequency bands used in 3G (third generation) communication systems and long term evolution (LTE) communication systems, implementation in higher frequency bands (e.g., 25–60 GHz band) is being considered.

[0003] For example, in order to mitigate path loss of radio waves and increase the transmission distance of radio waves in the millimeter wave (mmWave) band, beamforming technology, massive multiple-input multiple-output (MIMO) technology, full dimensional MIMO (FD-MIMO) technology, array antenna technology, analog beamforming technology, and large scale antenna technology are being discussed in 5G communication systems.

[0004] Electronic devices are becoming more streamlined for efficient system use, and antennas are also required to be streamlined while satisfying high-gain characteristics. Electronic devices generate electromagnetic waves, and the antenna's transmission power can be increased to improve its transmission performance. The specific absorption rate (SAR) is a numerical value that indicates the degree to which the generated electromagnetic waves are absorbed by the human body. SAR uses units of kW / g (or mW / g), which can mean the amount of power (kW, W, or mW) absorbed per 1 gram of human body. As concerns about the harmful effects of electromagnetic waves on the human body arise, various regulations limiting the SAR of electronic devices are being proposed.

[0005] The electronic device may perform a backoff operation for the transmit power (or a maximum value of the transmit power, or a maximum transmit power limit (MTPL)) when, for example, the expected SAR due to the transmit power is expected to exceed a threshold. For example, the electronic device may transmit a communication signal using the backed-off transmit power in response to a specific event (e.g., a grip, a hot-spot, and / or a proxy), or may transmit a communication signal using the transmit power set based on the backed-off MTPL.

[0006] Additionally, a technique is also being used to back off the transmission power (or MTPL) based on the total amount of SAR values ​​accumulated over a set period of time (or the average value of SARs generated over a set period of time). As much as the SARs that affect the human body instantaneously, the SARs that affect the human body on average also need to be considered, and accordingly, a backoff operation for the transmission power (or MTPL) can be performed when the total amount of accumulated SARs (or the average value of SARs generated over a set period of time) satisfies a set condition.

[0007] Various operations that consider SAR, such as backoff operations, may be based on the state of the antenna included in the electronic device. The state of the antenna may include a free state and a grip state. The free state may indicate a state in which the antenna is not influenced by an external object (e.g., a human body) (or, a state in which an external object does not contact the antenna), and the grip state may indicate a state in which the antenna is influenced by an external object (or, a state in which an external object contacts the antenna).

[0008] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above-described matters constitute prior art related to the present disclosure.

[0009] According to one embodiment of the present disclosure, an electronic device (101) may include one or more antennas (240), radio frequency (RF) circuitry (250) connected to the one or more antennas, one or more processors (120) including processing circuitry, and a memory (130) storing instructions.

[0010] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to control the RF circuit to provide a first RF signal to a first antenna of the one or more antennas based on a first frequency band.

[0011] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to identify a reflected signal corresponding to the first RF signal received through a coupler connected to the first antenna.

[0012] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a reflection coefficient corresponding to the first frequency band to determine a grip state based on the first RF signal and the reflected signal.

[0013] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a first offset corresponding to the first frequency band based on first association information between the plurality of frequency bands and the plurality of offsets.

[0014] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a first adjusted reflection coefficient by adding the first offset to the determined reflection coefficient.

[0015] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a first scaling factor corresponding to the first frequency band based on second association information between the plurality of frequency bands and the plurality of scaling factors, and to determine a second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor.

[0016] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine whether a state associated with the first antenna is the grip state based on whether a magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude.

[0017] According to one embodiment of the present disclosure, an electronic device (101) may include one or more antennas (240), a radio frequency (RF) circuit (250) connected to the one or more antennas, one or more processors (120) including processing circuitry, and a memory (130) storing instructions.

[0018] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to set first association information between a plurality of frequency bands and a plurality of offsets.

[0019] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to set second association information between the plurality of frequency bands and the plurality of scaling factors.

[0020] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to control the RF circuit to provide a first RF signal to the first antenna based on a first frequency band.

[0021] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to identify a reflected signal corresponding to the first RF signal received through a coupler connected to the first antenna.

[0022] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a reflection coefficient corresponding to the first frequency band to determine a grip state based on the first RF signal and the reflected signal.

[0023] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a first offset corresponding to the first frequency band based on the first association information.

[0024] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a first adjusted reflection coefficient by adding the first offset to the determined reflection coefficient.

[0025] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor.

[0026] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine whether a state associated with the first antenna is the grip state based on whether a magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude.

[0027] According to one embodiment of the present disclosure, a method of an electronic device (101) may include controlling a radio frequency (RF) circuit (250) to provide a first RF signal to a first antenna among one or more antennas (240) based on a first frequency band.

[0028] According to one embodiment of the present disclosure, the method may include an operation of identifying a reflected signal corresponding to the first RF signal received through a coupler connected to the first antenna.

[0029] According to one embodiment of the present disclosure, the method may include an operation of checking a reflection coefficient corresponding to the first frequency band to determine a grip state based on the first RF signal and the reflection signal.

[0030] According to one embodiment of the present disclosure, the method may include an operation of identifying a first offset corresponding to the first frequency band based on first association information between a plurality of frequency bands and a plurality of offsets.

[0031] According to one embodiment of the present disclosure, the method may include an operation of identifying a first adjusted reflection coefficient by adding the first offset to the identified reflection coefficient.

[0032] According to one embodiment of the present disclosure, the method may include an operation of identifying a first scaling factor corresponding to the first frequency band based on second association information between the plurality of frequency bands and the plurality of scaling factors, and identifying a second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor.

[0033] According to one embodiment of the present disclosure, the method may include an operation of determining whether a state associated with the first antenna is the grip state based on whether a magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude.

[0034] According to one embodiment of the present disclosure, a method of an electronic device (101) may include an operation of setting first association information between a plurality of frequency bands and a plurality of offsets.

[0035] According to one embodiment of the present disclosure, the method may include an operation of setting second association information between the plurality of frequency bands and the plurality of scaling factors.

[0036] According to one embodiment of the present disclosure, the method may include controlling a radio frequency (RF) circuit (250) to provide a first RF signal to a first antenna among one or more antennas (240) based on a first frequency band.

[0037] According to one embodiment of the present disclosure, the method may include an operation of identifying a reflected signal corresponding to the first RF signal received through a coupler connected to the first antenna.

[0038] According to one embodiment of the present disclosure, the method may include an operation of checking a reflection coefficient corresponding to the first frequency band to determine a grip state based on the first RF signal and the reflection signal.

[0039] According to one embodiment of the present disclosure, the method may include an operation of identifying a first offset corresponding to the first frequency band based on the first association information.

[0040] According to one embodiment of the present disclosure, the method may include an operation of identifying a first adjusted reflection coefficient by adding the first offset to the identified reflection coefficient.

[0041] According to one embodiment of the present disclosure, the method may include an operation of determining a second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor.

[0042] According to one embodiment of the present disclosure, the method may include an operation of determining whether a state associated with the first antenna is the grip state based on whether a magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude.

[0043] According to one embodiment of the present disclosure, a storage medium storing computer-readable instructions may be provided.

[0044] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by one or more processors (120) including processing circuitry of the electronic device (101), may cause the electronic device to perform at least one operation.

[0045] According to one embodiment of the present disclosure, the at least one operation may include controlling an RF circuit to provide a first radio frequency (RF) signal to a first antenna among one or more antennas (240) based on a first frequency band.

[0046] According to one embodiment of the present disclosure, the at least one operation may include an operation of identifying a reflected signal corresponding to the first RF signal received through a coupler connected to the first antenna.

[0047] According to one embodiment of the present disclosure, the at least one operation may include an operation of checking a reflection coefficient corresponding to the first frequency band to determine a grip state based on the first RF signal and the reflection signal.

[0048] According to one embodiment of the present disclosure, the at least one operation may include an operation of identifying a first offset corresponding to the first frequency band based on first association information between the plurality of frequency bands and the plurality of offsets.

[0049] According to one embodiment of the present disclosure, the at least one operation may include an operation of determining a first adjusted reflection coefficient by adding the first offset to the determined reflection coefficient.

[0050] According to one embodiment of the present disclosure, the at least one operation may include an operation of identifying a first scaling factor corresponding to the first frequency band based on second association information between the plurality of frequency bands and the plurality of scaling factors.

[0051] According to one embodiment of the present disclosure, the at least one operation may include determining a second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor.

[0052] According to one embodiment of the present disclosure, the at least one operation may include an operation of determining whether a state associated with the first antenna is the grip state based on whether a magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude.

[0053] According to one embodiment of the present disclosure, a storage medium storing computer-readable instructions may be provided.

[0054] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by one or more processors (120) including processing circuitry of the electronic device (101), may cause the electronic device to perform at least one operation.

[0055] According to one embodiment of the present disclosure, the at least one operation may include an operation of setting first association information between a plurality of frequency bands and a plurality of offsets.

[0056] According to one embodiment of the present disclosure, the at least one operation may include an operation of setting second association information between the plurality of frequency bands and the plurality of scaling factors.

[0057] According to one embodiment of the present disclosure, the at least one operation may include controlling a radio frequency (RF) circuit (250) to provide a first RF signal to a first antenna among one or more antennas (240) based on a first frequency band.

[0058] According to one embodiment of the present disclosure, the at least one operation may include an operation of identifying a reflected signal corresponding to the first RF signal received through a coupler connected to the first antenna.

[0059] According to one embodiment of the present disclosure, the at least one operation may include an operation of checking a reflection coefficient corresponding to the first frequency band to determine a grip state based on the first RF signal and the reflection signal.

[0060] According to one embodiment of the present disclosure, the at least one operation may include an operation of identifying a first offset corresponding to the first frequency band based on the first association information.

[0061] According to one embodiment of the present disclosure, the at least one operation may include an operation of determining a first adjusted reflection coefficient by adding the first offset to the determined reflection coefficient.

[0062] According to one embodiment of the present disclosure, the at least one operation may include determining a second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor.

[0063] According to one embodiment of the present disclosure, the at least one operation may include an operation of determining whether a state associated with the first antenna is the grip state based on whether a magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude.

[0064] In connection with the description of the drawings, the same or similar reference numerals may be used for the same or similar components.

[0065] FIG. 1 is a block diagram schematically illustrating an electronic device (101) within a network environment (100) according to various embodiments.

[0066] FIG. 2A is a block diagram of an electronic device according to one embodiment.

[0067] FIG. 2b is a block diagram of an electronic device according to one embodiment.

[0068] Figure 3 is a drawing for explaining the change in grip state I / Q value according to the distance between the antenna and an external object.

[0069] Fig. 4 is a diagram for explaining changes in grip state I / Q values ​​according to the frequency band used in the RF circuit.

[0070] Fig. 5 is a diagram for explaining changes in grip state I / Q values ​​according to the frequency band used in the RF circuit.

[0071] FIG. 6 is a diagram for explaining an offset by frequency band for a free region according to one embodiment.

[0072] FIG. 7a is a diagram for explaining a frequency band-specific scaling factor for a free region according to one embodiment.

[0073] FIG. 7b is a diagram for explaining a frequency band-specific scaling factor for a free region according to one embodiment.

[0074] FIG. 7c is a diagram for explaining a frequency band-specific scaling factor for a free region according to one embodiment.

[0075] Figure 8 is a flowchart illustrating an operation process of an electronic device according to one embodiment.

[0076] Figure 9 is a flowchart illustrating an operation process of an electronic device according to one embodiment.

[0077] FIG. 10a is a diagram for explaining the reflection coefficient in a 0 mm grip state for each frequency band according to one embodiment.

[0078] FIG. 10b is a diagram for explaining a case where a scaling factor is applied to a reflection coefficient in a 0 mm grip state for each frequency band according to one embodiment.

[0079] FIG. 10c is a diagram for explaining a case where a scaling factor and an offset are applied to the reflection coefficient in a 0 mm grip state for each frequency band according to one embodiment.

[0080] Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the attached drawings. In addition, when describing an embodiment of the present disclosure, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of an embodiment of the present disclosure, such detailed description will be omitted. In addition, the terms described below are terms defined in consideration of the functions in an embodiment of the present disclosure, and these may vary depending on the intention or custom of the user or operator. Therefore, the definitions should be made based on the contents throughout this specification.

[0081] It should be noted that the technical terms used in this specification are merely used to describe specific embodiments and are not intended to limit the embodiments of the present disclosure. Alternatively, unless specifically defined otherwise herein, the technical terms used in this specification should be interpreted as having a meaning generally understood by a person skilled in the art to which the present disclosure pertains, and should not be interpreted in an excessively broad or narrow sense. Alternatively, if a technical term used in this specification is an incorrect technical term that does not accurately express the spirit of the present disclosure, it should be replaced with a technical term that can be correctly understood by a person skilled in the art. Alternatively, general terms used in the embodiments of the present disclosure should be interpreted as defined in the dictionary or according to the context, and should not be interpreted in an excessively narrow sense.

[0082] Alternatively, the singular expressions used herein include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "consist of" or "comprises" should not be construed to necessarily include all of the various components or various operations described in the specification, and should be construed to mean that some of the components or some of the operations may not be included, or that additional components or operations may be included.

[0083] Alternatively, terms including ordinal numbers, such as "first," "second," etc., used herein may be used to describe various components, but the components should not be limited by these terms. These terms are used solely to distinguish one component from another. For example, without departing from the scope of the present disclosure, a first component could be referred to as a "second component," and similarly, a second component could also be referred to as a "first component."

[0084] When a component is referred to as being "connected" or "connected" to another component, it may be directly connected or connected to that other component, but there may also be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0085] Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the attached drawings. Regardless of the drawing numbers, identical or similar components will be given the same reference numbers and redundant descriptions thereof will be omitted. Alternatively, when describing an embodiment of the present disclosure, if a detailed description of a related known technology is determined to obscure the gist of the present disclosure, the detailed description thereof will be omitted. Alternatively, it should be noted that the attached drawings are only intended to facilitate easy understanding of the spirit of the present disclosure and should not be construed as limiting the spirit of the present disclosure by the attached drawings. The spirit of the present disclosure should be construed to extend to all modifications, equivalents, and substitutes other than the attached drawings.

[0086] Hereinafter, an embodiment of the present disclosure will be described using an electronic device as an example, but the electronic device may also be referred to as a terminal, a mobile station, mobile equipment (ME), user equipment (UE), user terminal (UT), subscriber station (SS), wireless device, handheld device, or access terminal (AT). Alternatively, in an embodiment of the present disclosure, the electronic device may be a device having a communication function, such as a mobile phone, a personal digital assistant (PDA), a smart phone, a wireless MODEM, or a laptop.

[0087] FIG. 1 is a block diagram schematically illustrating an electronic device (101) within a network environment (100) according to one embodiment.

[0088] Referring to FIG. 1, in a network environment (100), an electronic device (101) may communicate with an electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with an electronic device (104) or a server (108) via a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

[0089] The processor (120) may control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) by executing, for example, software (e.g., a program (140)), and may perform various data processing or calculations. According to one embodiment, as at least a part of the data processing or calculation, the processor (120) may store a command or data received from another component (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the command or data stored in the volatile memory (132), and store the resulting data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or a secondary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together therewith. For example, if the electronic device (101) includes a main processor (121) and a secondary processor (123), the secondary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a specified function. The secondary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0090] The auxiliary processor (123) may control at least a part of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing device) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, in the electronic device (101) itself where artificial intelligence is performed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0091] The number of processors (120) may be one or more. For example, the processor (120) may have a multi-core processor structure such as a dual core, quad core, or hexa core.

[0092] The processor (120) can control the operations of the electronic device (101) by executing instructions stored in the memory (130). For example, the processor (120) can correspond to a plurality of processors that collectively perform a plurality of operations by dividing them among the processors.

[0093] The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).

[0094] The program (140) may be stored as software in memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0095] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0096] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. According to one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0097] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. In one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

[0098] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).

[0099] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0100] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0101] The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0102] A haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. According to one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0103] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0104] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented as at least a part of, for example, a power management integrated circuit (PMIC) (power management integrated circuit (circuitry)).

[0105] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0106] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (194) (e.g., a local area network (LAN) communication module, or a power line communication module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, Wi-Fi (wireless fidelity) direct, or IrDA (infrared data association)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as a plurality of separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

[0107] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), an external electronic device (e.g., the electronic device (104)), or a network system (e.g., the second network (199)). According to one embodiment, the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.

[0108] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). According to one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). According to one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (198) or the second network (199), may be selected from the plurality of antennas, for example, by the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device via the selected at least one antenna. According to some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

[0109] In one embodiment, the antenna module (197) may form a mmWave antenna module. In one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band.

[0110] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0111] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In another embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0112] FIG. 2A is a block diagram of an electronic device according to one embodiment.

[0113] Referring to FIG. 2A, an electronic device (101) (e.g., the electronic device (101) of FIG. 1) may include a processor (120) including processing circuitry (e.g., the processor (120) of FIG. 1), a radio frequency integrated circuit (RFIC) (210), a radio frequency front end (RFFE) circuit (220), an antenna tuning circuit (230), and an antenna (240).

[0114] In one embodiment, the radio frequency (RF) circuit (250) may include an RFIC (210), an RFFE circuit (220), and / or an antenna tuning circuit (230). Although FIG. 2A illustrates an example where the electronic device (101) includes one antenna (e.g., antenna (240)), the electronic device (101) may include one or more antennas.

[0115] The processor (120) can determine the state of the antenna based on the reflection coefficient. According to one embodiment, the processor (120) can determine the state of the antenna based on the reflection coefficient defined by the I (in-phase) value, which is an amplitude component, and the Q (quadrature-phase) value, which is a phase component. The state of the antenna (240) can include a free state and a grip state.

[0116] In one embodiment, the free state may represent a state in which the distance between the antenna (240) and an external object (e.g., a human body) exceeds a threshold distance. In one embodiment, the free state may represent a state in which the antenna (240) is not affected by an external object (e.g., a human body). In one embodiment, the free state may represent a state in which an external object does not contact the antenna (240).

[0117] In one embodiment, the grip state may indicate a state in which the distance between the antenna (240) and the external object is less than or equal to a threshold distance. In one embodiment, the grip state may indicate a state in which the antenna (240) is influenced by the external object. In one embodiment, the grip state may indicate a state in which the external object contacts the antenna (240).

[0118] Electronic devices can monitor the status of their antennas based on grip sensors. However, this method requires the electronic device to be equipped with a separate grip sensor, which can increase the cost of the electronic device due to increased component costs. Furthermore, the grip sensor requires mounting space, which can create issues regarding the size of the electronic device.

[0119] Alternatively, the electronic device can determine the status of the antenna based on the reflection coefficient (e.g., the I (in-phase) value corresponding to the amplitude component of the reflection coefficient and the Q (quadrature-phase) value corresponding to the phase component). However, in the case of determining the status of the antenna based on the reflection coefficient, the I value and the Q value for determining the free state and the I value and the Q value for determining the grip state must be set for each of the frequency bands supported by the electronic device. In this way, since the I value and the Q value for determining the free state and the I value and the Q value for determining the grip state, which are set for each of the frequency bands supported by the electronic device, are stored using non-volatile memory, there may be an issue with the memory size. In addition, since the I value and the Q value for determining the free state and the I value and the Q value for determining the grip state are set for each of the frequency bands supported by the electronic device, as the number of frequency bands supported by the electronic device increases, the probability of malfunction occurring due to the complexity of its operation may increase.

[0120] The processor (120) may perform a back off operation for the transmission power based on the state of the antenna (240). In one embodiment, the back off operation for the transmission power may refer to an operation of backing off the transmission power (or, the maximum value of the transmission power, or the maximum transmission power limit (MTPL)) used in the RF circuit (250). According to one embodiment, the processor (120) may check the state of the antenna (240) based on the reflection coefficient, and if the checked state of the antenna (240) is a grip state, may back off the transmission power used in the RF circuit (250). According to one embodiment, the processor (120) may check the state of the antenna (240) based on the reflection coefficient, and if the checked state of the antenna (240) is a grip state, may check the specific absorption rate (SAR) accumulated for a set period of time. The processor (120) may back off the transmit power used in the RF circuit (250) based on the accumulated SAR. For example, when the processor (120) identifies a specific event (e.g., a grip, a hot-spot, and / or a proxy), the processor (120) may transmit a communication signal using the backed-off transmit power corresponding to the specific event, or may transmit a communication signal using the transmit power set based on the backed-off MTPL. In one embodiment, the processor (120) may back off the transmit power (or MTPL) based on the total amount of SAR values ​​accumulated over a set period of time (or the average value of SARs generated over a set period of time). As much as the SAR that affects the human body instantaneously, the SAR that affects the human body on average also needs to be considered, and accordingly, a back off operation for the transmit power (or MTPL) may be performed when the total amount of accumulated SARs (or the average value of SARs generated over a set period of time) satisfies a set condition.

[0121] Various operations that take SAR into account, such as back-off operations, may be based on the state of the antenna (240) included in the electronic device (101), and therefore, it may be important to more accurately determine the state of the antenna (240) in order to comply with various regulations that limit SAR for the electronic device (101).

[0122] The processor (120) can check the status of the antenna (240) based on the grip sensor. However, in the case of checking the status of the antenna (240) based on the grip sensor, the electronic device (101) must be equipped with a separate grip sensor, which may cause an increase in the price of the electronic device (101) due to an increase in the price of components, and also may cause a problem in terms of the size of the electronic device (101) because a mounting space for the grip sensor is required.

[0123] Accordingly, in one embodiment of the present disclosure, the processor (120) can check the status of the antenna (240) based on a reflection coefficient (e.g., a reflection coefficient defined by an I (in-phase) value and a Q (quadrature-phase) value). In one embodiment, the processor (120) can check the status of the antenna (240) by setting a free area that is commonly applicable to all frequency bands supported by the electronic device (101) and setting a scaling factor for the reflection coefficient in each of the frequency bands supported by the electronic device (101). The free area and the scaling factor will be described in more detail below, and thus a detailed description thereof will be omitted here.

[0124] In one embodiment, the processor (120) can control the operation of the RF circuit (250). In one embodiment, the processor (120) can control a setting value (e.g., a tuning code) of the antenna tuning circuit (230), and the antenna tuning circuit (230) can perform an antenna tuning operation based on the setting value set by the processor (120). According to one embodiment, the processor (120) can perform antenna impedance matching by applying a tuning code corresponding to the impedance of the antenna (240). For example, there may be a plurality (e.g., 65) tuning codes corresponding to the impedance of the antenna (240), and each tuning code may be mapped to each index of a reflection coefficient lookup table. The processor (120) can identify a tuning code corresponding to an index closest to a reflection coefficient based on the lookup table.

[0125] FIG. 2b is a block diagram of an electronic device according to one embodiment.

[0126] Referring to FIG. 2B, an electronic device (101) (e.g., the electronic device (101) of FIG. 1 or FIG. 2A) may include an RFIC (210) (e.g., the RFIC (210) of FIG. 2A), an RFFE circuit (220) (e.g., the RFFE circuit (220) of FIG. 2A), an antenna tuning circuit (230) (e.g., the antenna tuning circuit (230) of FIG. 2A), and an antenna (240) (e.g., the antenna of FIG. 2A).

[0127] In one embodiment, the RFIC (210) may include a modulator (251), a digital to analog converter (DAC) (252), a mixer (253), a filter (254), a mixer (255), a demodulator (256), an analog to digital converter (ADC) (257), a mixer (258), a filter (259), a mixer (260), and / or an oscillator (261).

[0128] In one embodiment, the RFFE circuit (220) may include a power amplifier (PA) (263), a low noise amplifier (LNA) (265), a duplexer (DPX) (267), an adaptive switch module (ASM) (269), and / or a coupler (271). For example, the RFFE circuit (220) may be implemented in the form of a power amplifier module with integrated duplexers (PAMID).

[0129] In one embodiment, the antenna tuning circuit (230) may include an RF switch (RF SW) (273) and / or an antenna tuner (275).

[0130] According to one embodiment, a processor (not shown in FIG. 2B) including a processing circuit (e.g., processor (120) of FIG. 1 or FIG. 2A) may transmit and / or receive signals with other components (e.g., modulator (251), DAC (252), mixer (253), filter (254), mixer (255), modulator (256), ADC (257), mixer (258), filter (259), mixer (260), oscillator (261), PA (263), LNA (265), DPX (267), ASM (269), coupler (271), RF SW (273), antenna tuner (275), and / or antenna (240)), and control the operation thereof or perform processing and / or calculations of various data.

[0131] According to one embodiment, the processor can determine the state of the antenna (240) based on the reflection coefficient. According to one embodiment, the processor can determine the state of the antenna (240) based on the reflection coefficient defined by the I value, which is an amplitude component, and the Q value, which is a phase component. The state of the antenna (240) may include a free state and a grip state. The free state and the grip state of the antenna (240) may be implemented similarly or substantially identically to the free state and the grip state of the antenna (240) described in FIG. 2A, and thus, a redundant description thereof may be omitted. The processor may perform a backoff operation for the transmission power based on the state of the antenna (240). According to one embodiment, the processor may include a communication processor (CP) and / or an application processor (AP).

[0132] According to one embodiment, the modulator (251) may modulate a signal input from the processor based on a set modulation method and transmit the modulated signal to the DAC (252). For example, the signal input from the processor may be a transmission signal to be transmitted to an external electronic device (e.g., the electronic device (102) or (104) of FIG. 1, or the server (108) of FIG. 1). The DAC (252) may convert the modulated signal transmitted from the modulator (251) into an analog signal and transmit the analog signal to the mixer (253). The mixer (253) may mix the analog signal transmitted from the DAC (252) with a transmission frequency transmitted from the oscillator (261) and transmit the mixed signal to the filter (254). The filter (254) may perform a filtering operation on the signal transmitted from the mixer (253) and transmit the filtered signal to the mixer (255). The mixer (255) can perform a mixing operation on a signal transmitted from the filter (254) and transmit the mixed signal (e.g., RF signal) to the PA (263).

[0133] PA (263) can amplify a signal transmitted from mixer (255) based on a set amplification gain and then transmit the amplified signal to DPX (267). The signal transmitted from PA (263) can be input to DPX (267), and DPX (267) can perform a duplex operation on the signal transmitted from PA (263) and then transmit the duplexed signal to ASM (269).

[0134] A signal transmitted from DPX (267) can be input to ASM (269), and ASM (269) can perform a switching operation on the signal transmitted from DPX (267) and output it to coupler (271).

[0135] A signal transmitted from ASM (269) can be input to a coupler (271), and the coupler (271) can perform a coupling operation on the signal transmitted from ASM (269), and then transmit the coupled signal to an antenna tuner (275) through RF SW (273).

[0136] The antenna tuner (275) can perform a tuning operation on a signal transmitted through the RF SW (273) based on a set value (e.g., a tuning code), and then output the tuned signal through the antenna (240).

[0137] The antenna tuner (275) can adjust the impedance of the antenna (240) to be close to at least one reference impedance based on a setting value (e.g., a tuning code) set by the processor. In one embodiment, the antenna tuner (275) can include at least one of a switch, a resistor, an inductor, or a capacitor. For example, the antenna tuner (275) can adjust the electrical length (e.g., a capacitor, an inductor, or a resistor) between the antenna (240) and the RFIC (210) based on the tuning code to adjust the reflection due to the impedance difference between the antenna (240) and the RFIC (210).

[0138] According to one embodiment, the processor may control the antenna tuner (275) to match the impedance of the antenna (240) based on a communication frequency band (e.g., a first frequency band among a plurality of frequency bands) used in the electronic device (101) (or the RF circuit (e.g., the RF circuit (250) of FIG. 2A). For example, the processor may receive a feedback signal (e.g., a forward coupling signal or a reverse coupling signal) from the coupler (271) to determine the current antenna load (or antenna impedance). In one embodiment, the forward coupling signal may be a first RF signal transmitted through the RF circuit, and the reverse coupling signal may represent a reflected signal corresponding to the first RF signal received through the coupler (271). The coupler (271) may be coupled to a signal line between the PA (263) and the antenna tuner (275) to match the feedback signal corresponding to the communication signal. It can be output and passed to the processor.

[0139] In one embodiment, the processor calculates a reflection coefficient (Γ) from the input of the antenna tuner (275) toward the antenna (240) based on a ratio of the reverse coupling signal and the forward coupling signal. in ) can be verified. In one embodiment, the processor can verify the reflection coefficient based on the ratio of the reverse coupling signal and the forward coupling signal during a set period of time (e.g., one transmission time interval (TTI)). For example, one TTI can include two slots, and one slot can have a length of about 0.5 ms.

[0140] In one embodiment, the processor can determine the free state and grip state of the antenna (240) based on the change in the impedance of the antenna (240). In one embodiment, the processor can generate an I / Q chart to represent a reflection coefficient corresponding to the free state of the antenna (240) on the I / Q domain. In one embodiment, the I / Q chart corresponding to the free state may be a region having a set radius (or a set magnitude) from the origin of the I / Q domain. In one embodiment, the I / Q chart may be a type of Smith chart. Hereinafter, for convenience of explanation, "I / Q chart corresponding to the free state" may be used interchangeably with "free region". When a point corresponding to the measured reflection coefficient is included in the free region, the state of the antenna (240) may be a free state. Alternatively, if the point corresponding to the measured reflection coefficient is not included within the free area (e.g., if the point corresponding to the measured reflection coefficient exists outside the free area), the state of the antenna (240) may be a grip state.

[0141] In one embodiment, the processor may determine that the state of the antenna (240) is a free state if the point corresponding to the determined reflection coefficient exists inside the I / Q chart for a set period of time. Alternatively, the processor may determine that the state of the antenna (240) is a grip state if the point corresponding to the determined reflection coefficient of the antenna exists outside the I / Q chart. In one embodiment, the processor may determine the state of the antenna (240) based on the distance between the point corresponding to the reflection coefficient and the origin of the I / Q chart. In one embodiment, the distance between the point corresponding to the reflection coefficient and the origin of the I / Q chart is determined based on the I value and the Q value defining the reflection coefficient. 2 + Q 2This can be the distance I between the point corresponding to the reflection coefficient and the origin of the I / Q chart. 2 + Q 2 can represent the size of the reflection coefficient.

[0142] In one embodiment, if the distance between the point corresponding to the reflection coefficient and the origin of the I / Q chart is less than or equal to a threshold distance (e.g., a radius of the I / Q chart), the state of the antenna (240) may be determined to be a free state. Alternatively, the processor may determine the state of the antenna (240) to be a grip state if the distance between the point corresponding to the reflection coefficient and the origin of the I / Q chart exceeds the threshold distance.

[0143] In one embodiment, the processor may determine that the state of the antenna (240) is a free state if the magnitude of the reflection coefficient is less than or equal to a threshold value. Alternatively, the processor may determine that the state of the antenna (240) is a grip state if the magnitude of the reflection coefficient exceeds a threshold value.

[0144] Figure 3 is a drawing for explaining the change in grip state I / Q value according to the distance between the antenna and an external object.

[0145] Before explaining FIG. 3, the grip state I / Q value may represent a reflection coefficient corresponding to the grip state of an antenna (e.g., antenna (240) of FIG. 2A or FIG. 2B). The free state I / Q value may represent a reflection coefficient corresponding to the free state of the antenna.

[0146] Referring to FIG. 3, the free area (300) may be an I / Q chart corresponding to the free state of the antenna. If a point corresponding to the confirmed reflection coefficient exists inside the free area (300), the state of the antenna may be a free state, and if a point corresponding to the confirmed reflection coefficient exists outside the free area (300), the state of the antenna may be a grip state. For example, as illustrated in FIG. 3, it can be seen that the reflection coefficient increases as the distance between the antenna and an external object (e.g., a human body) becomes shorter. For example, as illustrated in FIG. 3, it can be seen that the grip I / Q value is the largest when the distance between the antenna and the external object is 0 mm, and the grip I / Q value is the smallest when the distance between the antenna and the external object is 10 mm.

[0147] In this way, since the reflection coefficient decreases as the distance between the external object and the antenna increases, the grip sensitivity for the grip state may vary depending on how the area of ​​the free area (300) is set (for example, depending on how the radius of the free area (300) is set). Alternatively, since the reflection coefficient decreases as the distance between the external object and the antenna increases, the grip sensitivity for the grip state may vary depending on how the critical size for determining the grip state (for example, the critical reflection coefficient size) is set.

[0148] For example, if the area of ​​the free area (300) is set narrowly, the grip sensitivity may increase. If the grip sensitivity increases, the grip recognition distance for recognizing the grip state of the antenna may increase. Hereinafter, for convenience of explanation, the term "grip recognition distance" may be used interchangeably with "grip sensing distance." For another example, if the threshold size for identifying the grip state is set small, the grip sensitivity may increase.

[0149] As the issue of human harmful effects of electromagnetic waves has emerged, various regulations have been proposed to limit the specific absorption rate (SAR) of electronic devices (e.g., the electronic device (101) of FIG. 1, FIG. 2A, or FIG. 2B). For example, in order to determine the Limb SAR stipulated by the Federal Communications Commission (FCC), the grip recognition distance may have to be at least a first distance (e.g., 2 mm), and in order to determine the Body SAR stipulated by the Radio Equipment Directive (RED), the grip recognition distance may have to be at least a second distance (e.g., 7 mm). Limb SAR may represent the SAR for the condition where a user holds and uses an electronic device in his hand, and Body SAR may represent the SAR for the condition where a user wears and uses an electronic device on his body.

[0150] Thus, securing an appropriate grip recognition distance for performing SAR-related operations can be very important. Increasing the grip sensitivity to secure a relatively long grip recognition distance may extend the grip recognition distance for recognizing the grip state of the antenna. However, this may lead to false recognition of the antenna as being in a grip state even though it is in a free state. Therefore, it may be very important to appropriately set the area of ​​the free area (or set a threshold size (e.g., a threshold reflection coefficient size) for identifying the grip state) to prevent false recognition while ensuring the grip recognition distance.

[0151] Fig. 4 is a diagram for explaining changes in grip state I / Q values ​​according to the frequency band used in the RF circuit.

[0152] Before explaining FIG. 4, the 0 mm grip state I / Q value may represent a reflection coefficient corresponding to a grip state when the distance between the antenna (e.g., antenna (240) of FIG. 2a or FIG. 2b) and an external object (e.g., human body) is less than a set distance (e.g., 0 mm).

[0153] Referring to FIG. 4, the free area (300) may be an I / Q chart corresponding to the free state of the antenna, and if a point corresponding to the reflection coefficient of the antenna exists inside the free area (300), the state of the antenna may be a free state, and if a point corresponding to the reflection coefficient of the antenna exists outside the free area (300), the state of the antenna may be a grip state. For example, as illustrated in FIG. 4, it can be seen that the higher the frequency band used in the RF circuit (e.g., the RF circuit (250) of FIG. 2A) is (e.g., the higher the center frequency of the frequency band used in the RF circuit is), the smaller the 0mm grip state I / Q value of the antenna becomes. For example, as illustrated in FIG. 4, it can be seen that the 0mm grip state I / Q value of the antenna in the N7 band (e.g., 2500 MHz band) is the smallest, and the 0mm grip state I / Q value of the antenna in the N3 band (e.g., 1700 MHz band) is the largest.

[0154] Fig. 5 is a diagram for explaining changes in grip state I / Q values ​​according to the frequency band used in the RF circuit.

[0155] Referring to FIG. 5, it is assumed that an electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 2A, or FIG. 2B) supports (or uses) n (e.g., three) frequency bands. For example, the three frequency bands may include an N1 band (e.g., a 1900 MHz band), an N3 band (e.g., a 1700 MHz band), and / or an N7 band (e.g., a 2500 MHz band).

[0156] When the state of the antenna (e.g., the antenna (240) of FIG. 2A or FIG. 2B) in each of the N1 band, N3 band, and N7 band is in the grip state, the parasitic capacitance occurring in each frequency band may be the same. For example, when the parasitic capacitances in the N3 band, N1 band, and N7 band are assumed to be ΔC1, ΔC2, and ΔC3, respectively, ΔC1, ΔC2, and ΔC3 may be the same as shown in the following mathematical expression 1.

[0157] <Mathematical Formula 1>

[0158] ΔC1 = ΔC2 = ΔC3

[0159] Mathematical Formula 1 is merely an example to aid understanding, and embodiments of the present disclosure may not be limited thereto. For example, Mathematical Formula 1 may be modified, applied, or expanded in various ways.

[0160] As shown in mathematical expression 1, the parasitic capacitance generated when the antenna is in a grip state can be independent of the frequency band (frequency independent).

[0161] When the antenna is in a grip state in each of the N3, N1, and N7 bands, the impedance in each frequency band may be frequency dependent. The impedance generated in a frequency band may decrease as the frequency band increases. The impedance generated in a frequency band is ΔZ f Assuming that ΔZ f can be expressed as in the following mathematical formula 2.

[0162] <Mathematical Formula 2>

[0163]

[0164] Mathematical Formula 2 is merely an example to aid understanding, and embodiments of the present disclosure may not be limited thereto. For example, Mathematical Formula 2 may be modified, applied, or expanded in various ways.

[0165] In mathematical expression 2, ΔZ f represents the impedance generated in the frequency band, and ΔC f can represent parasitic capacitance occurring in the frequency band.

[0166] In Fig. 5, ΔZ1 may represent the impedance generated in the N3 band, ΔZ2 may represent the impedance generated in the N1 band, and ΔZ3 may represent the impedance generated in the N7 band.

[0167] In this way, since the parasitic capacitances for the frequency bands are the same, the grip sensing distance in the middle band (MB) / high band (HB) such as the N3 band and the N7 band can be shortened. For example, the low band (LB) may represent a band below about 1 GHz, the MB may represent a band above about 1 GHz and below about 2 GHz, and the HB may represent a band above about 2 GHz. In Fig. 5, reference numeral 510 may represent a reflection coefficient (or I / Q value) in each frequency band when the state of the antenna is a 0 mm grip state, and reference numeral 520 may represent a reflection coefficient (or I / Q value) in each frequency band when the state of the antenna is a free state.

[0168] Therefore, if the free regions for the frequency bands supported by the electronic device are set identically, the grip recognition distance may vary. Therefore, when the antenna is in the 0mm grip state, a problem may arise where the relatively long grip recognition distance, such as the minimum 7mm grip recognition distance required for the Body SAR regulations in RED, cannot be guaranteed for MB and / or HB, which have relatively small reflection coefficients.

[0169] In order to avoid the problem of not being able to guarantee a relatively long grip recognition distance in MB and / or HB, one may consider setting a free area uniquely for each of the multiple frequency bands supported by the electronic device (or one may consider setting a threshold size (e.g., a threshold reflection coefficient size) for identifying a grip state uniquely for each of the multiple frequency bands).

[0170] However, if a free region is uniquely set for each frequency band supported by the electronic device, the size of the reflection coefficient for the free region may have to be set for each frequency band supported by the electronic device. Since the reflection coefficient set for each frequency band is stored using non-volatile memory in this way, there may be a problem with the memory size. In addition, since the reflection coefficient for the free region is set for each frequency band, the complexity of operating the free region may increase as the number of frequency bands supported (or used) by the electronic device increases, and a problem of malfunction may occur due to this operational complexity. In addition, if a free region is uniquely set for each frequency band supported by the electronic device, the sensitivity to the grip state may have to be increased because the grip recognition distance is relatively short in the case of MB and / or HB. However, if the grip sensitivity is increased in MB and / or HB, the grip recognition distance for recognizing the grip state of the antenna may be increased, but a malfunction may occur in which the antenna is recognized as being in a grip state even though it is in a free state.

[0171] Accordingly, in the present disclosure, a method for checking the status of an antenna can be proposed by setting a free area that is commonly applicable to all of a plurality of frequency bands supported by an electronic device and setting a scaling factor for a reflection coefficient in each of the frequency bands supported by the electronic device, which can be specifically described as follows.

[0172] FIG. 6 is a diagram for explaining an offset by frequency band for a free region according to one embodiment.

[0173] Referring to FIG. 6, an electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 2A, or FIG. 2B) (e.g., the processor (120) of FIG. 1 or FIG. 2A) may, through a calibration procedure (e.g., a calibration procedure in a manufacturing process), determine (e.g., measure or obtain) a reflection coefficient when an antenna (e.g., the antenna (240) of FIG. 2A or 2B) is in a free state for each of a plurality of frequency bands (e.g., n frequency bands) supported (or used) by the electronic device during a set period (e.g., one TTI). Although FIG. 6 illustrates an example in which the electronic device includes one antenna (e.g., the antenna (240)), the electronic device (101) may also include one or more antennas. For example, one TTI may include two slots, and one slot may have a length of about 0.5 ms. For example, let's assume that the number of frequency bands supported by the electronic device is three, and the three frequency bands include the N1 band (e.g., 1900 MHz band), the N3 band (e.g., 1700 MHz band), and / or the N7 band (e.g., 2500 MHz band).

[0174] In one embodiment, the electronic device may identify (e.g., extract or obtain) an offset that can shift the identified reflection coefficient to the origin (0,0) of an I / Q chart (or free region) (600) for representing a reflection coefficient corresponding to the free state of the antenna in the I / Q domain, for each of a plurality of frequency bands supported by the electronic device, when the state of the antenna is a free state. In one embodiment, the radius of the I / Q chart (or free region) (600) may be set based on a grip recognition distance required by the electronic device. In one embodiment, the radius of the I / Q chart (or free region) (600) may be a threshold size (e.g., a threshold reflection coefficient size) for identifying the grip state of the antenna, which is commonly used for all of the plurality of frequency bands supported by the electronic device. In one embodiment, the grip recognition distance required by the electronic device may be a grip recognition distance that can satisfy regulations related to SAR. In one embodiment, the offset may include an I value and a Q value. For example, the offset may be implemented as a pair of I and Q values. In one embodiment, the offset may be a compensation value to enable the free area (600) to be commonly used for all of a plurality of frequency bands supported by the electronic device. In one embodiment, the electronic device may set the offset so as to shift the identified reflection coefficient to the origin (0,0) of the I / Q chart (or free area) (600) when the state of the antenna is in the free state for each frequency band, thereby enabling the use of the same I / Q chart (or free area) (600) for a plurality of frequency bands supported by the electronic device. In one embodiment, the electronic device may set the value of the opposite sign of the identified reflection coefficient when the state of the antenna is in the free state for each frequency band as the offset.

[0175] In one embodiment, the electronic device can prevent malfunctions that may occur depending on the grip recognition distance unique to each frequency band (e.g., recognizing the state of the antenna as a free state even though the state of the antenna is a grip state, or recognizing the state of the antenna as a grip state even though the state of the antenna is a free state) by setting an offset for each frequency band. In one embodiment, the electronic device can store the offset identified for each of a plurality of frequency bands. For example, the electronic device can store the offset identified for each of the frequency bands using a non-volatile memory. For example, the electronic device can store the offset identified for each of the frequency bands in the form of a lookup table. In one embodiment, the lookup table can be association information between a plurality of frequency bands and a plurality of offsets.

[0176] In FIG. 6, if it is assumed that the confirmed reflection coefficient is represented as point A in the I / Q domain as reference number 610 when the state of the antenna is in the free state in, for example, the first frequency band among the frequency bands supported by the electronic device, the electronic device can set an offset with the I value and Q value that can shift the point A to the origin (0,0) of the I / Q chart (or free area) (600). Then, if it is assumed that the confirmed reflection coefficient is represented as point B in the I / Q domain as reference number 620 when the state of the antenna is in the grip state in the first frequency band, the electronic device can apply an offset to the I value and Q value corresponding to point B. In one embodiment, the electronic device can apply an offset to the I value and Q value corresponding to point B by adding the I value and the Q value corresponding to the offset to the I value and the Q value corresponding to point B, respectively. In one embodiment, the electronic device can identify point C (630) corresponding to the offset-applied I and Q values ​​as the I and Q values ​​corresponding to the grip state of the antenna. The electronic device can identify that the state of the antenna is the grip state because point C (630) is not included in the free area (600) (or because point C (630) exists outside the free area (600).

[0177] As described in FIG. 6, when an electronic device sets an offset for each of a plurality of frequency bands supported (or used) by the electronic device, the electronic device can check the status of the antenna with only one free area (600) without having to set a separate free area for each frequency band.

[0178] FIG. 7a is a diagram for explaining a frequency band-specific scaling factor for a free region according to one embodiment.

[0179] Referring to FIG. 7A, it is assumed that an electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 2A, or FIG. 2B) (e.g., the processor (120) of FIG. 1 or FIG. 2A) supports n (e.g., three) frequency bands. For example, the three frequency bands may include an N1 band (e.g., a 1900 MHz band), an N3 band (e.g., a 1700 MHz band), and / or an N7 band (e.g., a 2500 MHz band). When the state of an antenna (e.g., the antenna (240) of FIG. 2A or 2B) is in a grip state in each of the N1 band, the N3 band, and the N7 band, the parasitic capacitance in each frequency band may be the same, as described in FIG. 5. The parasitic capacitance generated when the state of the antenna is in the grip state may be independent of the frequency band, as described in FIG. 5. When the antenna is in a grip state in each of the N3 band, N1 band, and N7 band, the impedance in each frequency band may be dependent on the frequency band, as described in Fig. 5. The impedance generated in a frequency band may decrease as the frequency band increases.

[0180] As described in Fig. 5, since the parasitic capacitances for the frequency bands are the same, the grip sensing distance may be shortened in relatively high frequency bands (e.g., MB / HB) such as the N3 band and the N7 band. Therefore, if the free areas for the frequency bands supported by the electronic device are set to be the same, the grip recognition distance may be different. Therefore, when the state of the antenna is a 0 mm grip state, a problem may arise in that a relatively long grip recognition distance, such as the minimum 7 mm grip recognition distance for the Body SAR-related regulations in RED, cannot be guaranteed for MB and / or HB, which have relatively small reflection coefficients.

[0181] Accordingly, in one embodiment of the present disclosure, the electronic device can check (e.g., measure or obtain) reflection coefficients in a plurality of frequency bands while sweeping a plurality of frequency bands supported (or used) by the electronic device when the state of the antenna is a 0 mm grip state through a calibration procedure (e.g., a calibration procedure in a manufacturing process). For example, the electronic device can check reflection coefficients in a plurality of frequency bands while sweeping from the lowest frequency band among the plurality of frequency bands. In one embodiment of the present disclosure, the case of checking reflection coefficients in a plurality of frequency bands while sweeping a plurality of frequency bands supported (or used) by the electronic device when the state of the antenna is a 0 mm grip state is described as an example. However, it should be understood that a grip state in which the distance between the antenna and an external object is less than a threshold distance that is less than a threshold distance used to check the grip state may be considered, rather than a 0 mm grip state. For example, the state of the antenna may be a 0 mm grip state when the antenna is in contact with a jig. For example, a user of an electronic device may cause the antenna of the electronic device to contact a jig so that the antenna is in a 0 mm grip state. The jig may be an external electronic device (e.g., a test device) used to implement the 0 mm grip state of the antenna.

[0182] In one embodiment, the electronic device can determine the reflection coefficient when the state of the antenna is in the 0 mm grip state in the frequency band, and determine the I / Q distance between the point corresponding to the determined reflection coefficient and the origin (0,0) of the I / Q domain. In one embodiment, the I / Q distance between the point corresponding to the determined reflection coefficient and the origin (0,0) of the I / Q domain is determined based on the I value and the Q value defining the reflection coefficient. 2 + Q 2This can be the distance I between the point corresponding to the reflection coefficient and the origin of the I / Q chart. 2 + Q 2 can represent the size of the reflection coefficient.

[0183] In one embodiment, the electronic device may distinguish a scaling region based on the point corresponding to the reflection coefficient of the nth frequency band, when the difference between the I / Q distance Dn-1 between the point corresponding to the reflection coefficient when the state of the antenna is a 0 mm grip state in the n-1 frequency band among a plurality of frequency bands (e.g., n frequency bands) and the origin (0,0) of the I / Q domain and the I / Q distance Dn between the point corresponding to the reflection coefficient when the state of the antenna is a 0 mm grip state in the n-1 frequency band and the origin (0,0) of the I / Q domain exceeds a set threshold difference. In one embodiment, the threshold difference may be set based on a grip recognition distance required by the electronic device. In one embodiment, the grip recognition distance required by the electronic device may be a grip recognition distance that can satisfy regulations related to SAR. Since the scaling region is distinguished based on the point corresponding to the reflection coefficient of the n-1 frequency band, the scaling region corresponding to the n-1 frequency band may be different from the scaling region corresponding to the n-th frequency band. In one embodiment, the scaling region may represent a region on the I / Q domain to which a scaling factor is applied. As described in FIG. 5, since the higher the frequency band, the smaller the 0 mm grip state I / Q value of the antenna, in order to efficiently set a free region (e.g., the free region (600) of FIG. 6) that is commonly applied to all of the multiple frequency bands supported by the electronic device, scaling may be applied to the reflection coefficient corresponding to the frequency band used in the RF circuit (e.g., the RF circuit (250) of FIG. 2A) to compensate for the grip recognition distance according to the frequency band used in the RF circuit. In one embodiment, the scaling factor may be set based on the grip recognition distance and frequency band required by the electronic device.In one embodiment, the reflection coefficient can be compensated for the frequency band by multiplying the scaling factor by the reflection coefficient, and the scaling factor can be implemented as a pair of I and Q values. For example, the electronic device can store the identified scaling factor for each frequency band in the form of a lookup table. In one embodiment, the lookup table can be association information between a plurality of frequency bands and a plurality of scaling factors. In one embodiment, since the 0 mm grip state I / Q values ​​do not change linearly, the electronic device can set a scaling region and set a scaling factor corresponding to the scaling region. For example, two or more frequency bands among n frequency bands used in the electronic device can use the same scaling factor. In this way, the reason why two or more frequency bands among n frequency bands can use the same scaling factor may be because the 0 mm grip state I / Q values ​​do not change linearly for each frequency band.

[0184] The scaling area can be described more specifically with reference to Fig. 7a as follows.

[0185] In FIG. 7A, since it is assumed that the electronic device supports (or uses) a total of three frequency bands including an N1 band (e.g., a 1900 MHz band), an N3 band (e.g., a 1700 MHz band), and / or an N7 band (e.g., a 2500 MHz band), the electronic device may perform a sweep operation starting from the N3 band, which is the lowest frequency band among the plurality of frequency bands supported by the electronic device. The electronic device may determine the I / Q distance D1 between the point 3 (700) corresponding to the reflection coefficient when the state of the antenna is in the 0 mm grip state in the N3 band and the origin (0,0) of the I / Q domain. Thereafter, the electronic device may determine the I / Q distance D2 between the point 2 (710) corresponding to the reflection coefficient when the state of the antenna is in the 0 mm grip state in the N1 band immediately following the N3 band and the origin (0,0) of the I / Q domain. The electronic device may determine whether a difference between the I / Q distance D1 and the I / Q distance D2 exceeds a threshold difference. If the difference between D1 and D2 exceeds the threshold difference, the electronic device can set a scaling area B by point 3 (700) and point 2 (710) in the I / Q domain. In this case, the reference point of the scaling area B can be point 3 (700) corresponding to the N3 band, which is a lower frequency band among the two frequency bands, and therefore, the scaling factor for the N3 band, which is a frequency band corresponding to point 3 (700), can be (x2, y2).

[0186] Thereafter, the electronic device can check the I / Q distance D3 between point 1 (720) corresponding to the reflection coefficient when the antenna state is 0 mm grip state in the N7 band and the origin (0,0) of the I / Q domain. The electronic device can check whether the difference between the I / Q distance D2 and the I / Q distance D3 exceeds a threshold difference. If the difference between D2 and D3 exceeds the threshold difference, the electronic device can set a scaling area A by point 2 (710) and point 1 (720) on the I / Q domain. In this case, the reference point of the scaling area A can be point 2 (710) corresponding to the N1 band, which is a lower frequency band among the two frequency bands, and therefore, the scaling factor for the N1 band, which is a frequency band corresponding to point 2 (710), can be (x1, y1).

[0187] Additionally, although not shown separately in FIG. 7a, the scaling factor for the N7 band, which is the last frequency band among the frequency bands used in the electronic device corresponding to point 3 (700), may be set to a value other than (x2, y2) and (x1, y1).

[0188] In Fig. 7a, the case where the scaling regions are set is described as an example in which the difference between the I / Q distance D1 and the I / Q distance D2 exceeds the threshold difference, and the difference between the I / Q distance D2 and the I / Q distance D3 exceeds the threshold difference. However, if the difference between the I / Q distance Dn-1 between the point corresponding to the reflection coefficient when the state of the antenna is in the 0 mm grip state in the n-1th frequency band among a plurality of (e.g., n) frequency bands supported (or used) by the electronic device and the origin (0,0) of the I / Q domain and the I / Q distance Dn between the point corresponding to the reflection coefficient when the state of the antenna is in the 0 mm grip state in the nth frequency band and the origin (0,0) of the I / Q domain is less than the threshold difference, the scaling factor for the n-1th frequency band and the scaling factor for the nth frequency band may be the same. This may be because compensation for the reflection coefficient according to the frequency band is unnecessary since the amount of change in the reflection coefficient according to the frequency band is not large.

[0189] In Fig. 7a, an example is described in which an electronic device uses three frequency bands and, therefore, scaling areas (scaling area A and scaling area B) are set based on three points corresponding to the three frequency bands. However, the points used to set the scaling areas may be n, which is the number of frequency bands supported by the electronic device.

[0190] For example, the scaling factor according to one embodiment can be represented as shown in Table 1 below.

[0191] Table 1

[0192]

[0193] Table 1 may represent an example of a lookup table storing scaling factors. In Table 1, an index represents an index for identifying a scaling region, and a scaling factor x and a scaling factor y may represent scaling factors applied to a reflection coefficient measured in a corresponding frequency band in the corresponding scaling region. For example, the scaling factor x may be multiplied by an I value corresponding to a reflection coefficient measured in a corresponding frequency band, and the scaling factor y may be multiplied by a Q value corresponding to a reflection coefficient measured in a corresponding frequency band.

[0194] In Table 1, index 1 may represent a scaling area (e.g., 1, n point area) set corresponding to the first frequency band and the nth frequency band among n frequency bands used in the electronic device, index 2 may represent a scaling area (e.g., 2, n point area) set corresponding to the second frequency band and the nth frequency band among n frequency bands used in the electronic device, and index n-1 may represent a scaling area (e.g., n-1, n point area) set corresponding to the n-1th frequency band and the nth frequency band among n frequency bands used in the electronic device.

[0195] Table 1 illustrates an example of storing a scaling factor according to one embodiment in the form of a lookup table, but there may be no limitation on the form in which the scaling factor according to one embodiment is stored.

[0196] For example, the start frequency and end frequency for the scaling region according to one embodiment can be represented as shown in Table 2 below.

[0197] Table 2

[0198]

[0199] Table 2 may represent an example of a lookup table that stores start and end frequencies for a scaling region. In Table 2, the index may represent an index for identifying a scaling region, the region start frequency may represent the start frequency of the scaling region, and the region end frequency may represent the end frequency of the scaling region.

[0200] In Table 2, index 1 may represent scaling area 1, which is the first scaling area among the scaling areas set in the electronic device, index 2 may represent scaling area 2, which is the second scaling area among the scaling areas set in the electronic device, and index n may represent scaling area n, which is the nth scaling area among the scaling areas set in the electronic device.

[0201] Table 2 illustrates an example of storing the start frequency and end frequency for a scaling region in the form of a lookup table according to one embodiment, but there may be no limitation on the form in which the start frequency and end frequency for the scaling region are stored.

[0202] For example, the offset according to one embodiment can be represented as shown in Table 3 below.

[0203] Table 3

[0204]

[0205] Table 3 may represent an example of a lookup table storing offsets according to one embodiment. In Table 3, index may represent an index for identifying a frequency band, offset x may represent an offset applied to an I value corresponding to a reflection coefficient for the frequency band, and offset y may represent an offset applied to a Q value corresponding to a reflection coefficient for the frequency band.

[0206] In Table 3, index 1 may represent the N1 band, which is the first frequency band among n frequency bands used (or supported) in the electronic device, index 2 may represent the N2 band, which is the second frequency band among n frequency bands used in the electronic device, and index n may represent the Nn band, which is the nth frequency band among n frequency bands used in the electronic device.

[0207] Table 3 illustrates an example of storing an offset according to one embodiment in the form of a lookup table, but there may be no limitation on the form in which the offset according to one embodiment is stored.

[0208] For example, the radius of the free area according to one embodiment can be expressed as shown in Table 4 below.

[0209] Table 4

[0210]

[0211] Table 4 may represent an example of a lookup table storing the radius of a free area according to one embodiment. In Table 4, index may represent an index for identifying the radius of a free area, and circle radius may represent the radius of the free area.

[0212] Table 4 describes an example of storing the radius of a free area according to one embodiment in the form of a lookup table, but there may be no limitation on the form in which the radius of a free area according to one embodiment is stored.

[0213] For example, the threshold difference for setting the scaling area according to one embodiment can be expressed as in Table 5 below.

[0214] Table 5

[0215]

[0216] Table 5 may illustrate an example of a lookup table storing threshold differences for setting a scaling region according to one embodiment. In Table 5, an index may represent an index for identifying a threshold difference for a scaling region, and a region threshold may represent a threshold difference for setting a scaling region.

[0217] Table 5 illustrates an example of storing a threshold difference for setting a scaling area according to an embodiment in the form of a lookup table, but there may be no limitation on the form in which the threshold difference for setting a scaling area according to an embodiment is stored.

[0218] In one embodiment, the electronic device sets a free area that is commonly applicable to frequency bands supported (or used) in the electronic device, and applies an offset and scaling factor suitable for each frequency band to more stably provide a grip recognition distance required by the electronic device.

[0219] FIG. 7b is a diagram for explaining a frequency band-specific scaling factor for a free region according to one embodiment.

[0220] Referring to FIG. 7B, it is assumed that an electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 2A, or FIG. 2B) (e.g., the processor (120) of FIG. 1 or FIG. 2A) supports a plurality of (e.g., n) frequency bands. As described in FIG. 7A, the electronic device can sweep through the plurality of frequency bands supported (or used) by the electronic device when the state of the antenna is in the 0 mm grip state through a calibration procedure (e.g., a calibration procedure in a manufacturing process) and check (e.g., measure or obtain) reflection coefficients in the plurality of frequency bands. For example, the electronic device can check reflection coefficients in the plurality of frequency bands by sweeping from the lowest frequency band among the plurality of frequency bands. The electronic device, having checked the reflection coefficients in the plurality of frequency bands, can check a point corresponding to the reflection coefficient when the state of the antenna is in the 0 mm grip state in each of the plurality of frequency bands (e.g., n frequency bands).

[0221] In FIG. 7B, since it is assumed that the electronic device supports (or uses) a plurality of (e.g., n) frequency bands, the electronic device can obtain 0 mm grip state I / Q values ​​by performing a sweep operation starting from the lowest frequency band among the plurality of frequency bands supported by the electronic device. After obtaining the 0 mm grip state I / Q values ​​for the plurality of frequency bands, the electronic device can obtain (or calculate) the I / Q distance between the point corresponding to the 0 mm grip state I / Q value of each frequency band and the origin (0,0) of the I / Q domain. In one embodiment, the electronic device can convert the 0 mm grip state I / Q value of each frequency band into an absolute value so that the I / Q distance of each frequency band can be obtained in the first quadrant of the I / Q domain.

[0222] After acquiring I / Q distances for a plurality of frequency bands, the electronic device can identify I / Q distances that maintain linearity with the I / Q distance of the lowest frequency band among the plurality of frequency bands. In one embodiment, a scaling area can be created so as to include points having I / Q distances that maintain linearity. Accordingly, there can be a plurality of scaling areas in which the I / Q distances maintain linearity, and each scaling area can include a plurality of points. One of the points included in any two scaling areas among the plurality of scaling areas can be commonly included in both scaling areas, and a scaling factor applied to a scaling area that includes points corresponding to relatively longer I / Q distances can be applied to the point commonly included in both scaling areas. Information about the points included in each scaling area can be stored as non-volatile (NV) information.

[0223] In Fig. 7b, information about points included in each scaling area can be represented as in Tables A to E below.

[0224] Table A

[0225]

[0226] Table B

[0227]

[0228] Table C

[0229]

[0230] Table D

[0231]

[0232] Table E

[0233]

[0234] In Fig. 7b, it is assumed that there are two scaling regions (e.g., scaling region A and scaling region B) where the I / Q distances maintain linearity. For example, scaling region A may include point 1 (711), point 2 (713), and point 3 (715), and scaling region B may include point 3 (715), point 4 (717), and point 5 (719). In this case, the scaling factor applied to scaling region B may be applied to point 3 (715), which is common to both scaling regions A and B.

[0235] According to one embodiment, the electronic device can obtain (or calculate) a scaling factor of a scaling region A as shown in the following mathematical expression 3.

[0236] <Mathematical Formula 3>

[0237]

[0238] Mathematical Formula 3 is merely an example to aid understanding, and embodiments of the present disclosure may not be limited thereto. For example, Mathematical Formula 3 may be modified, applied, or expanded in various ways.

[0239] According to one embodiment, the electronic device can obtain (or calculate) a scaling factor of a scaling region B as shown in Equation 4 below.

[0240] <Mathematical Formula 4>

[0241]

[0242] Mathematical Formula 4 is merely an example to aid understanding, and embodiments of the present disclosure may not be limited thereto. For example, Mathematical Formula 4 may be modified, applied, or expanded in various ways.

[0243] According to one embodiment, the scaling factor of point 1 (711) included in the scaling area A (e.g., point1scale f) and the scaling factor of point 2 (713) (e.g., point2scale f ) can be expressed as in the following mathematical expressions 5 and 6.

[0244] <Mathematical Formula 5>

[0245]

[0246] <Mathematical Formula 6>

[0247]

[0248] Mathematical expressions 5 and 6 are merely examples to aid understanding, and embodiments of the present disclosure may not be limited thereto. For example, Mathematical expressions 5 and 6 may be modified, applied, or expanded in various ways.

[0249] In mathematical expressions 5 and 6, Pn represents the order of the point in the scaling area to which the point belongs, and Ac may represent the number of points included in the scaling area A. For example, Ac may be 3 (Ac = 3). For example, P1 may represent that point 1 (711) is the first order among the points included in the scaling area A to which point 1 (711) belongs, and P2 may represent that point 2 (713) is the second order among the points included in the scaling area A to which point 2 (713) belongs.

[0250] According to one embodiment, the scaling factor of point 3 (715) included in the scaling area B (e.g., point3scale) f ) and the scaling factor of point 4 (717) (e.g., point4scale f ) can be expressed as in the following mathematical expressions 7 and 8.

[0251] <Mathematical Formula 7>

[0252]

[0253] <Mathematical Formula 8>

[0254]

[0255] Mathematical expressions 7 and 8 are merely examples to aid understanding, and embodiments of the present disclosure may not be limited thereto. For example, Mathematical expressions 7 and 8 may be modified, applied, or expanded in various ways.

[0256] In mathematical expressions 7 and 8, Pn represents the order of the point in the scaling area to which the point belongs, and Bc may represent the number of points included in the scaling area B. For example, Bc may be 3 (Bc = 3). For example, P1 may represent that point 3 (715) is the first order among the points included in the scaling area B to which point 3 (715) belongs, and P2 may represent that point 4 (717) is the second order among the points included in the scaling area B to which point 4 (717) belongs.

[0257] FIG. 7c is a diagram for explaining a frequency band-specific scaling factor for a free region according to one embodiment.

[0258] Referring to FIG. 7C, it is assumed that an electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 2A, or FIG. 2B) (e.g., the processor (120) of FIG. 1 or FIG. 2A) supports a plurality of (e.g., n) frequency bands. As described in FIG. 7A, the electronic device can sweep through the plurality of frequency bands supported (or used) by the electronic device when the state of the antenna is in the 0 mm grip state through a calibration procedure (e.g., a calibration procedure in a manufacturing process) and check (e.g., measure or obtain) reflection coefficients in the plurality of frequency bands. For example, the electronic device can check reflection coefficients in the plurality of frequency bands by sweeping from the lowest frequency band among the plurality of frequency bands. The electronic device, having checked the reflection coefficients in the plurality of frequency bands, can check a point corresponding to the reflection coefficient when the state of the antenna is in the 0 mm grip state in each of the plurality of frequency bands (e.g., n frequency bands).

[0259] In FIG. 7C, since it is assumed that the electronic device supports (or uses) a plurality of (e.g., n) frequency bands, the electronic device can obtain 0 mm grip state I / Q values ​​by performing a sweep operation starting from the lowest frequency band among the plurality of frequency bands supported by the electronic device. After obtaining the 0 mm grip state I / Q values ​​for the plurality of frequency bands, the electronic device can obtain (or calculate) the I / Q distance between the point corresponding to the 0 mm grip state I / Q value of each frequency band and the origin (0,0) of the I / Q domain. In one embodiment, the electronic device can convert the 0 mm grip state I / Q value of each frequency band into an absolute value so that the I / Q distance of each frequency band can be obtained in the first quadrant of the I / Q domain.

[0260] After acquiring I / Q distances for multiple frequency bands, the electronic device can identify I / Q distances that maintain linearity with the I / Q distance of the lowest frequency band among the multiple frequency bands. In one embodiment, a scaling area can be created to include points having I / Q distances that maintain linearity. If linearity is maintained among all acquired I / Q distances, information about points included in the scaling area can be stored as NV information.

[0261] In Fig. 7c, information about points included in the scaling area can be represented as shown in Tables F and G below.

[0262] Table F

[0263]

[0264] Table G

[0265]

[0266] In Fig. 7c, it is assumed that all I / Q distances maintain linearity. For example, Point 1 (751), Point 2 (753), Point 3 (755), Point 4 (757), and Point 5 (759) may be included in the same scaling region. In this case, a scaling factor can be obtained for each of Point 1 (751), Point 2 (753), Point 3 (755), Point 4 (757), and Point 5 (759), and the electronic device can obtain (or calculate) the scaling factor as shown in Equation 9 below.

[0267] <Equation 9>

[0268]

[0269] Mathematical Formula 9 is merely an example to aid understanding, and embodiments of the present disclosure may not be limited thereto. For example, Mathematical Formula 9 may be modified, applied, or expanded in various ways.

[0270] According to one embodiment of the present disclosure, an electronic device (101) may include one or more antennas (240), radio frequency (RF) circuitry (250) connected to the one or more antennas, one or more processors (120) including processing circuitry, and a memory (130) storing instructions.

[0271] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to control the RF circuit to provide a first RF signal to a first antenna of the one or more antennas based on a first frequency band.

[0272] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to identify a reflected signal corresponding to the first RF signal received through a coupler connected to the first antenna.

[0273] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a reflection coefficient corresponding to the first frequency band to determine a grip state based on the first RF signal and the reflected signal.

[0274] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a first offset corresponding to the first frequency band based on first association information between the plurality of frequency bands and the plurality of offsets.

[0275] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a first adjusted reflection coefficient by adding the first offset to the determined reflection coefficient.

[0276] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a first scaling factor corresponding to the first frequency band based on second association information between the plurality of frequency bands and the plurality of scaling factors, and to determine a second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor.

[0277] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine whether a state associated with the first antenna is the grip state based on whether a magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude.

[0278] According to one embodiment of the present disclosure, the plurality of offsets may include values ​​of opposite signs of reflection coefficients in free states corresponding to the plurality of frequency bands, respectively, and the free state may include a state in which a distance between the first antenna and an external object exceeds a threshold distance.

[0279] According to one embodiment of the present disclosure, the plurality of scaling factors are generated based on the magnitudes of reflection coefficients in grip states corresponding to the plurality of frequency bands, respectively, and the grip state may include a state in which a distance between the first antenna and the external object is less than or equal to the threshold distance.

[0280] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a state associated with the first antenna as the grip state based on a magnitude of the second adjusted reflection coefficient exceeding the threshold magnitude.

[0281] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a state associated with the first antenna as the free state based on a magnitude of the second adjusted reflection coefficient being less than or equal to the threshold magnitude.

[0282] According to one embodiment of the present disclosure, a scaling factor corresponding to a relatively high frequency band among the plurality of scaling factors may be greater than a scaling factor corresponding to a relatively low frequency band.

[0283] According to one embodiment of the present disclosure, the threshold size may be based on a distance between the one or more antennas and the external object required to perform an operation associated with a specific absorption rate (SAR).

[0284] According to one embodiment of the present disclosure, the threshold size may be used to set the origin of an I / Q chart generated to represent a reflection coefficient corresponding to a free state of the first antenna corresponding to free states corresponding to each of the plurality of frequency bands in an I (in-phase) / Q (quadrature-phase) domain to be the same.

[0285] According to one embodiment of the present disclosure, the I / Q chart may include a Smith chart.

[0286] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to back off transmit power used in the RF circuit based on a state associated with the first antenna being the grip state.

[0287] According to one embodiment of the present disclosure, an electronic device (101) may include one or more antennas (240), a radio frequency (RF) circuit (250) connected to the one or more antennas, one or more processors (120) including processing circuitry, and a memory (130) storing instructions.

[0288] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to set first association information between a plurality of frequency bands and a plurality of offsets.

[0289] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to set second association information between the plurality of frequency bands and the plurality of scaling factors.

[0290] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to control the RF circuit to provide a first RF signal to the first antenna based on a first frequency band.

[0291] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to identify a reflected signal corresponding to the first RF signal received through a coupler connected to the first antenna.

[0292] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a reflection coefficient corresponding to the first frequency band to determine a grip state based on the first RF signal and the reflected signal.

[0293] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a first offset corresponding to the first frequency band based on the first association information.

[0294] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a first adjusted reflection coefficient by adding the first offset to the determined reflection coefficient.

[0295] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor.

[0296] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine whether a state associated with the first antenna is the grip state based on whether a magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude.

[0297] According to one embodiment of the present disclosure, the plurality of offsets may include values ​​of opposite signs of reflection coefficients in free states corresponding to the plurality of frequency bands, respectively, and the free state may include a state in which a distance between the first antenna and an external object exceeds a threshold distance.

[0298] According to one embodiment of the present disclosure, the plurality of scaling factors are generated based on the magnitudes of reflection coefficients in grip states corresponding to the plurality of frequency bands, respectively, and the grip state may include a state in which a distance between the first antenna and the external object is less than or equal to the threshold distance.

[0299] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a state associated with the first antenna as the grip state based on a magnitude of the second adjusted reflection coefficient exceeding the threshold magnitude.

[0300] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to determine a state associated with the first antenna as the free state based on a magnitude of the second adjusted reflection coefficient being less than or equal to the threshold magnitude.

[0301] According to one embodiment of the present disclosure, a scaling factor corresponding to a relatively high frequency band among the plurality of scaling factors may be greater than a scaling factor corresponding to a relatively low frequency band.

[0302] According to one embodiment of the present disclosure, the threshold size may be based on a distance between the one or more antennas and the external object required to perform an operation associated with a specific absorption rate (SAR).

[0303] According to one embodiment of the present disclosure, the threshold size may be used to set the origin of an I / Q chart generated to represent a reflection coefficient corresponding to a free state of the first antenna corresponding to free states corresponding to each of the plurality of frequency bands in an I (in-phase) / Q (quadrature-phase) domain to be the same.

[0304] According to one embodiment of the present disclosure, the I / Q chart may include a Smith chart.

[0305] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by the one or more processors, may cause the electronic device to back off transmit power used in the RF circuit based on a state associated with the first antenna being the grip state.

[0306] Figure 8 is a flowchart illustrating an operation process of an electronic device according to one embodiment.

[0307] In the following examples, the operations may be performed sequentially, but are not necessarily performed sequentially. For example, the order of the operations may be changed, and at least two operations may be performed in parallel.

[0308] According to one embodiment, operations 811 to 823 may be understood to be performed in a processor (e.g., processor (120) of FIG. 1 or FIG. 2A) of an electronic device (e.g., electronic device (101) of FIG. 1, FIG. 2A, or FIG. 2B).

[0309] Referring to FIG. 8, according to one embodiment, an electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 2A, or FIG. 2B) (e.g., the processor (120) of FIG. 1 or FIG. 2A) may, at operation 811, control an RF circuit (e.g., the RF circuit (250) of FIG. 2A) to provide a first RF signal to a first antenna among one or more antennas (e.g., the antenna (240) of FIG. 2A or FIG. 2B) based on a first frequency band. The electronic device may, at operation 811, identify a reflected signal corresponding to the first RF signal received via a coupler (e.g., the coupler (271) of FIG. 2B)) connected to the first antenna. In one embodiment, the electronic device may support (or use) a plurality of frequency bands, and the first frequency band may be one of the plurality of frequency bands.

[0310] According to one embodiment, the electronic device that has identified a reflection signal corresponding to the first RF signal may, in operation 813, identify a reflection coefficient corresponding to the first frequency band based on the first RF signal and the reflection signal. In one embodiment, the electronic device may identify a reflection coefficient corresponding to the first frequency band based on the first RF signal and the reflection signal for a set period of time (e.g., one TTI). The operation of identifying the reflection coefficient may be implemented similarly or substantially identically to that described in FIG. 2A, and thus, a repeated description thereof may be omitted.

[0311] According to one embodiment, the electronic device that has identified a reflection coefficient corresponding to a first frequency band may, in operation 815, identify a first offset corresponding to the first frequency band based on first association information between a plurality of frequency bands and a plurality of offsets. In one embodiment, the plurality of offsets may be negative values ​​of reflection coefficients in free states corresponding to the plurality of frequency bands, respectively. In one embodiment, the free state may be a state in which a distance between the first antenna and an external object (e.g., a human body) exceeds a threshold distance. In one embodiment, the first association information may be implemented in the form of a lookup table. In one embodiment, in the lookup table, offsets may be mapped for each frequency band.

[0312] For example, it can be assumed that an electronic device supports three frequency bands, and the three frequency bands include an N1 band (e.g., a 1900 MHz band), an N3 band (e.g., a 1700 MHz band), and / or an N7 band (e.g., a 2500 MHz band). In this case, the reflection coefficient in the free state for each frequency band can be confirmed as shown in Table 6 below.

[0313] Table 6

[0314]

[0315] As shown in Table 6, the electronic device can perform the operation of checking the reflection coefficient in the free state for each frequency band a total of n times (e.g., a total of 4 times). For example, as the value of n increases, a stable reflection coefficient in the free state for each frequency band can be obtained. However, since the processing time required to obtain the reflection coefficient in the free state for each frequency band may increase as the value of n increases, the electronic device can set the value of n to an appropriate value considering the overall performance. The average reflection coefficient in the free state for the N3 band may be (331,4451), the average reflection coefficient in the free state for the N1 band may be (2934,-6993), and the average reflection coefficient in the free state for the N7 band may be (2780,-4651).

[0316] The electronic device can set the offset for each frequency band and manage it in the form of a lookup table, as shown in Table 7 below, for example.

[0317] Table 7

[0318]

[0319] As shown in Table 7, it can be seen that the offset for each frequency band is the opposite sign of the reflection coefficient in the free state for each frequency band.

[0320] In this way, by setting the offset for each frequency band, as described in Fig. 6, the reflection coefficients in the free state measured in multiple frequency bands can become the same reflection coefficient (e.g., (0,0)) in the I / Q domain based on the offsets (e.g., the reflection coefficients in the free state measured in multiple frequency bands can be shifted to the origin in the free domain based on the offsets).

[0321] According to one embodiment, the electronic device, which has identified a first offset corresponding to a first frequency band based on the first association information, can identify a first adjusted reflection coefficient by adding the first offset to the identified reflection coefficient in operation 817.

[0322] According to one embodiment, the electronic device that has confirmed the first adjusted reflection coefficient may, in operation 819, confirm the first scaling factor corresponding to the first frequency band based on second association information between the plurality of frequency bands and the plurality of scaling factors. In one embodiment, the plurality of scaling factors may be generated based on the magnitudes of the reflection coefficients in grip states respectively corresponding to the plurality of frequency bands. In one embodiment, a scaling factor corresponding to a relatively high frequency band among the plurality of scaling factors may be larger than a scaling factor corresponding to a relatively low frequency band. In one embodiment, the grip state may be a state in which the distance between the first antenna and the external object is less than or equal to a threshold distance. In one embodiment, the second association information may be implemented in the form of a lookup table. In one embodiment, in the lookup table, a scaling factor may be mapped for each frequency band.

[0323] In this way, by setting the scaling factor for each frequency band, the reflection coefficients measured in the grip state in multiple frequency bands, as described in Fig. 7a, can be adjusted based on the scaling factor. Accordingly, it may be possible to compensate for the reflection coefficients of the MB and / or HB, which are measured to be relatively small in the grip state.

[0324] According to one embodiment, the electronic device, which has identified a first scaling factor corresponding to a first frequency band, can identify a second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor in operation 821.

[0325] According to one embodiment, the electronic device that has verified the second adjusted reflection coefficient may determine, in operation 823, whether the state associated with the first antenna is the grip state based on whether the magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude. In one embodiment, the threshold magnitude may be based on a distance between one or more antennas and an external object required for the electronic device to perform an operation associated with SAR. In one embodiment, the threshold magnitude may correspond to the radius of the free area as described in FIG. 6. The electronic device may set the threshold magnitude so as to satisfy various regulations limiting the SAR for the electronic device. For example, to determine the Limb SAR as stipulated by the FCC, the grip recognition distance may have to be greater than or equal to a first distance (e.g., 2 mm), and to determine the Body SAR as stipulated by the RED, the grip recognition distance may have to be greater than or equal to a second distance (e.g., 7 mm), and thus the electronic device may set the threshold magnitude based on these grip recognition distances.

[0326] In one embodiment, the electronic device may determine the state associated with the first antenna as the grip state based on whether the magnitude of the second adjusted reflection coefficient exceeds a threshold value. Alternatively, the electronic device may determine the state associated with the first antenna as the free state based on whether the magnitude of the second adjusted reflection coefficient is less than or equal to the threshold value.

[0327] In one embodiment, the electronic device may back off the transmit power used in the RF circuit based on whether the state associated with the first antenna is in the grip state. Alternatively, the electronic device may determine the accumulated SAR over a set period of time based on whether the state associated with the first antenna is in the grip state, and back off the transmit power used in the RF circuit based on the accumulated SAR.

[0328] Figure 9 is a flowchart illustrating an operation process of an electronic device according to one embodiment.

[0329] In the following examples, the operations may be performed sequentially, but are not necessarily performed sequentially. For example, the order of the operations may be changed, and at least two operations may be performed in parallel.

[0330] According to one embodiment, operations 911 to 927 may be understood to be performed in a processor (e.g., processor (120) of FIG. 1 or FIG. 2A) of an electronic device (e.g., electronic device (101) of FIG. 1, FIG. 2A, or FIG. 2B).

[0331] Referring to FIG. 9, according to one embodiment, an electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 2A, or FIG. 2B) (e.g., the processor (120) of FIG. 1 or FIG. 2A) may, in operation 911, set first association information between a plurality of frequency bands and a plurality of offsets. In one embodiment, the first association information may be implemented in the form of a lookup table. In one embodiment, the electronic device may set the lookup table so that offsets are mapped to each frequency band. The first association information between the plurality of frequency bands and the plurality of offsets may be implemented similarly or substantially identically to that described in operation 815 of FIG. 8, and thus, a redundant description thereof may be omitted.

[0332] According to one embodiment, the electronic device that has set the first association information may set the second association information between the plurality of frequency bands and the plurality of scaling factors in operation 913. In one embodiment, the second association information may be implemented in the form of a lookup table. In one embodiment, the electronic device may set the lookup table so that the scaling factors are mapped to each frequency band. The second association information between the plurality of frequency bands and the plurality of scaling factors may be implemented similarly or substantially identically to that described in operation 819 of FIG. 8, and thus, a redundant description thereof may be omitted.

[0333] According to one embodiment, the electronic device that has set the second association information may, at operation 915, control an RF circuit (e.g., an RF circuit (250) of FIG. 2A) to provide a first RF signal to a first antenna among one or more antennas (e.g., the antenna (240) of FIG. 2A or 2B) based on a first frequency band. The electronic device may, at operation 915, identify a reflection signal corresponding to the first RF signal received through a coupler (e.g., the coupler (271) of FIG. 2B)) connected to the first antenna. In one embodiment, the electronic device may support (or use) a plurality of frequency bands, and the first frequency band may be one of the plurality of frequency bands.

[0334] According to one embodiment, the electronic device that has identified a reflection signal corresponding to the first RF signal may, in operation 917, identify a reflection coefficient corresponding to the first frequency band based on the first RF signal and the reflection signal. The operation of identifying the reflection coefficient corresponding to the first frequency band may be implemented similarly or substantially identically to that described in operation 813 of FIG. 8, and thus, a redundant description thereof may be omitted.

[0335] According to one embodiment, an electronic device that has identified a reflection coefficient corresponding to a first frequency band may, in operation 919, identify a first offset corresponding to the first frequency band based on first association information between a plurality of frequency bands and a plurality of offsets. The operation of identifying the first offset corresponding to the first frequency band may be implemented similarly or substantially identically to that described in operation 815 of FIG. 8, and thus, a redundant description thereof may be omitted.

[0336] According to one embodiment, the electronic device, which has identified the first offset corresponding to the first frequency band based on the first association information, can identify the first adjusted reflection coefficient by adding the first offset to the identified reflection coefficient in operation 921. The operation of identifying the first adjusted reflection coefficient by adding the first offset to the identified reflection coefficient can be implemented similarly or substantially identically to that described in operation 819 of FIG. 8, and thus, a redundant description thereof can be omitted.

[0337] According to one embodiment, the electronic device that has confirmed the first adjusted reflection coefficient may, in operation 923, confirm the first scaling factor corresponding to the first frequency band based on second association information between the plurality of frequency bands and the plurality of scaling factors. The operation of confirming the first scaling factor corresponding to the first frequency band based on the second association information may be implemented similarly or substantially identically to that described in operation 819 of FIG. 8, and thus, a redundant description thereof may be omitted.

[0338] According to one embodiment, the electronic device that has confirmed the first scaling factor corresponding to the first frequency band can confirm the second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor in operation 925. The operation of confirming the second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor can be implemented similarly or substantially identically to that described in operation 821 of FIG. 8, and thus, a redundant description thereof can be omitted.

[0339] According to one embodiment, the electronic device that has verified the second adjusted reflection coefficient may, in operation 927, determine whether the state associated with the first antenna is the grip state based on whether the magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude. The operation of determining whether the state associated with the first antenna is the grip state based on whether the magnitude of the second adjusted reflection coefficient is less than or equal to the threshold magnitude may be implemented similarly or substantially identically to that described in operation 823 of FIG. 8, and thus, a redundant description thereof may be omitted.

[0340] In one embodiment, the electronic device may determine the state associated with the first antenna as the grip state based on whether the magnitude of the second adjusted reflection coefficient exceeds a threshold value. Alternatively, the electronic device may determine the state associated with the first antenna as the free state based on whether the magnitude of the second adjusted reflection coefficient is less than or equal to the threshold value.

[0341] In one embodiment, the electronic device may back off the transmit power used in the RF circuit based on whether the state associated with the first antenna is in the grip state. Alternatively, the electronic device may determine the accumulated SAR over a set period of time based on whether the state associated with the first antenna is in the grip state, and back off the transmit power used in the RF circuit based on the accumulated SAR.

[0342] FIG. 10a is a diagram for explaining the reflection coefficient in a 0 mm grip state for each frequency band according to one embodiment.

[0343] Referring to FIG. 10A, the I / Q domain (1010) may represent a reflection coefficient in a 0 mm grip state in the N3 band (e.g., 1700 MHz band) and a reflection coefficient in a 0 mm grip state in the N7 band (e.g., 2500 MHz band) while offsets are set for the N3 band and the N7 band among a plurality of frequency bands supported by an electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 2A, or FIG. 2B) (e.g., the processor (120) of FIG. 1 or FIG. 2A). In FIG. 10A, the x-axis may represent a Q value, and the y-axis may represent an I value.

[0344] As shown in Fig. 10a, it can be seen that the size of the reflection coefficient in the 0 mm grip state in the N7 band, which is a relatively high frequency band, is smaller than the size of the reflection coefficient in the 0 mm grip state in the N3 band, which is a relatively low frequency band.

[0345] FIG. 10b is a diagram for explaining a case where a scaling factor is applied to a reflection coefficient in a 0 mm grip state for each frequency band according to one embodiment.

[0346] Referring to FIG. 10B, as described in FIG. 10A, the magnitude of the reflection coefficient in the case of a 0 mm grip state in the N7 band, which is a relatively high frequency band, may be smaller than the magnitude of the reflection coefficient in the case of a 0 mm grip state in the N3 band, which is a relatively low frequency band. An electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 2A, or FIG. 2B) (e.g., the processor (120) of FIG. 1 or FIG. 2A) sets scaling factors for a plurality of frequency bands supported by the electronic device, and therefore, the scaling factor set for the N7 band and the scaling factor set for the N3 band may be applied to the reflection coefficient in the case of a 0 mm grip state in the N7 band and the reflection coefficient in the case of a 0 mm grip state in the N3 band, respectively.

[0347] The I / Q domain (1020) can represent the adjusted reflection coefficient in the N7 band and the adjusted reflection coefficient in the N3 band when the scaling factor set for the N7 band and the scaling factor set for the N3 band are applied to the reflection coefficient in the 0 mm grip state in the N7 band and the reflection coefficient in the 0 mm grip state in the N3 band, respectively. As illustrated in FIG. 10b, when the scaling factor is applied, it can be seen that the adjusted value of the reflection coefficient in the 0 mm grip state in the N7 band, which is a relatively high frequency band, is greater than the adjusted value of the reflection coefficient in the 0 mm grip state in the N3 band or the N1 band, which are relatively low frequency bands.

[0348] FIG. 10c is a diagram for explaining a case where a scaling factor and an offset are applied to the reflection coefficient in a 0 mm grip state for each frequency band according to one embodiment.

[0349] Referring to FIG. 10c, an electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 2a, or FIG. 2b) (e.g., the processor (120) of FIG. 1 or FIG. 2a) can check the reflection coefficient when in a 0 mm grip state in the N7 band and the reflection coefficient when in a 0 mm grip state in the N3 band.

[0350] The electronic device can determine the first adjusted reflection coefficient by adding an offset set for the N7 band to the reflection coefficient when the grip is at 0 mm in the N7 band, and can determine the second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by a scaling factor set for the N7 band.

[0351] The electronic device can determine the first adjusted reflection coefficient by adding an offset set for the N3 band to the reflection coefficient when the grip is at 0 mm in the N3 band, and can determine the second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by a scaling factor set for the N3 band.

[0352] As shown in Fig. 10c, the adjusted reflection coefficient in the case of a 0 mm grip state in the N7 band and the adjusted reflection coefficient in the case of a 0 mm grip state in the N3 band are compensated to reflect the characteristics of the frequency band while allowing the status of the antenna to be checked in one free area, compared to the adjusted reflection coefficient in the case of a 0 mm grip state in the N7 band and the adjusted reflection coefficient in the case of a 0 mm grip state in the N3 band, which are shown in Fig. 10a, respectively.

[0353] The method for checking the grip state of an antenna provided in one embodiment of the present disclosure may have advantages in the following aspects.

[0354] A method for checking the grip state of an antenna according to one embodiment can enable an electronic device to stably check the Limb SAR as stipulated by the Federal Communications Commission (FCC). In this way, since the Limb SAR can be stably checked, it is possible to check the Limb SAR status when a call is connected, it is possible to consider a supplementary operation for the SAR backoff operation suggested by the National Frequency Agency (ANFR), and it is possible to perform an operation based on the Limb SAR regardless of whether the time average SAR (TAS) is applied.

[0355] A method for checking the grip state of an antenna according to one embodiment can enable an electronic device to check the state of the antenna based on a reflection coefficient without using a grip sensor. In this way, since it is possible to check the state of the antenna based on a reflection coefficient without using a grip sensor, the electronic device can prevent cost issues such as an increase in the price of the electronic device due to an increase in the cost of parts caused by the grip sensor, and also prevent issues that may arise in terms of the size of the electronic device due to the need for mounting space for the grip sensor. In particular, since it is possible to ensure the minimum grip recognition distance for Limb SAR stipulated by the FCC and the minimum grip recognition distance for Body SAR stipulated by the RED without using a grip sensor, the cost required to satisfy the SAR-related regulations presented by the FCC and RED can be reduced.

[0356] A method of checking the grip state of an antenna according to one embodiment enables an electronic device to accurately recognize the grip state of the antenna and secure a duration for securing Backoff MAX Power, which is the maximum transmission power when performing a backoff operation due to insufficient SAR margin, thereby increasing actual throughput. For example, when the transmission power increases by about 1 dB, the data rate can increase by about 10 Mbps. For example, when the state of the antenna is in a free state, the electronic device can increase the uplink data throughput by maximizing the Average SAR LIMIT, which is the maximum value of the average SAR that should not be exceeded during the period T for checking the cumulative SAR or the average SAR. As another example, when the state of the antenna is in a grip state, the electronic device can adaptively operate the Average SAR LIMIT based on the reflection coefficient.

[0357] According to one embodiment of the present disclosure, a method of an electronic device (101) may include controlling a radio frequency (RF) circuit (250) to provide a first RF signal to a first antenna among one or more antennas (240) based on a first frequency band.

[0358] According to one embodiment of the present disclosure, the method may include an operation of identifying a reflected signal corresponding to the first RF signal received through a coupler connected to the first antenna.

[0359] According to one embodiment of the present disclosure, the method may include an operation of checking a reflection coefficient corresponding to the first frequency band to determine a grip state based on the first RF signal and the reflection signal.

[0360] According to one embodiment of the present disclosure, the method may include an operation of identifying a first offset corresponding to the first frequency band based on first association information between a plurality of frequency bands and a plurality of offsets.

[0361] According to one embodiment of the present disclosure, the method may include an operation of identifying a first adjusted reflection coefficient by adding the first offset to the identified reflection coefficient.

[0362] According to one embodiment of the present disclosure, the method may include an operation of identifying a first scaling factor corresponding to the first frequency band based on second association information between the plurality of frequency bands and the plurality of scaling factors, and identifying a second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor.

[0363] According to one embodiment of the present disclosure, the method may include an operation of determining whether a state associated with the first antenna is the grip state based on whether a magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude.

[0364] According to one embodiment of the present disclosure, the plurality of offsets may include values ​​of opposite signs of reflection coefficients in free states corresponding to the plurality of frequency bands, respectively, and the free state may include a state in which a distance between the first antenna and an external object exceeds a threshold distance.

[0365] According to one embodiment of the present disclosure, the plurality of scaling factors are generated based on the magnitudes of reflection coefficients in grip states corresponding to the plurality of frequency bands, respectively, and the grip state may include a state in which a distance between the first antenna and the external object is less than or equal to the threshold distance.

[0366] According to one embodiment of the present disclosure, the method may include an operation of determining a state associated with the first antenna as the grip state based on a magnitude of the second adjusted reflection coefficient exceeding the threshold magnitude.

[0367] According to one embodiment of the present disclosure, the method may include an operation of determining a state associated with the first antenna as the free state based on a magnitude of the second adjusted reflection coefficient being less than or equal to the threshold magnitude.

[0368] According to one embodiment of the present disclosure, a scaling factor corresponding to a relatively high frequency band among the plurality of scaling factors may be greater than a scaling factor corresponding to a relatively low frequency band.

[0369] According to one embodiment of the present disclosure, the threshold size may be based on a distance between the one or more antennas and the external object required to perform an operation associated with a specific absorption rate (SAR).

[0370] According to one embodiment of the present disclosure, the threshold size is used to set the origin of an I / Q chart generated to represent a reflection coefficient corresponding to a free state of the first antenna corresponding to free states corresponding to each of the plurality of frequency bands on an I (in-phase) / Q (quadrature-phase) domain to be the same, and the I / Q chart may include a Smith chart.

[0371] According to one embodiment of the present disclosure, the method may include an operation of backing off transmission power used in the RF circuit based on a state associated with the first antenna being the grip state.

[0372] According to one embodiment of the present disclosure, a method of an electronic device (101) may include an operation of setting first association information between a plurality of frequency bands and a plurality of offsets.

[0373] According to one embodiment of the present disclosure, the method may include an operation of setting second association information between the plurality of frequency bands and the plurality of scaling factors.

[0374] According to one embodiment of the present disclosure, the method may include controlling a radio frequency (RF) circuit (250) to provide a first RF signal to a first antenna among one or more antennas (240) based on a first frequency band.

[0375] According to one embodiment of the present disclosure, the method may include an operation of identifying a reflected signal corresponding to the first RF signal received through a coupler connected to the first antenna.

[0376] According to one embodiment of the present disclosure, the method may include an operation of checking a reflection coefficient corresponding to the first frequency band to determine a grip state based on the first RF signal and the reflection signal.

[0377] According to one embodiment of the present disclosure, the method may include an operation of identifying a first offset corresponding to the first frequency band based on the first association information.

[0378] According to one embodiment of the present disclosure, the method may include an operation of identifying a first adjusted reflection coefficient by adding the first offset to the identified reflection coefficient.

[0379] According to one embodiment of the present disclosure, the method may include an operation of determining a second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor.

[0380] According to one embodiment of the present disclosure, the method may include an operation of determining whether a state associated with the first antenna is the grip state based on whether a magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude.

[0381] According to one embodiment of the present disclosure, the plurality of offsets may include values ​​of opposite signs of reflection coefficients in free states corresponding to the plurality of frequency bands, respectively, and the free state may include a state in which a distance between the first antenna and an external object exceeds a threshold distance.

[0382] According to one embodiment of the present disclosure, the plurality of scaling factors are generated based on the magnitudes of reflection coefficients in grip states corresponding to the plurality of frequency bands, respectively, and the grip state may include a state in which a distance between the first antenna and the external object is less than or equal to the threshold distance.

[0383] According to one embodiment of the present disclosure, the method may include an operation of determining a state associated with the first antenna as the grip state based on a magnitude of the second adjusted reflection coefficient exceeding the threshold magnitude.

[0384] According to one embodiment of the present disclosure, the method may include an operation of determining a state associated with the first antenna as the free state based on a magnitude of the second adjusted reflection coefficient being less than or equal to the threshold magnitude.

[0385] According to one embodiment of the present disclosure, a scaling factor corresponding to a relatively high frequency band among the plurality of scaling factors may be greater than a scaling factor corresponding to a relatively low frequency band.

[0386] According to one embodiment of the present disclosure, the threshold size may be based on a distance between the one or more antennas and the external object required to perform an operation associated with a specific absorption rate (SAR).

[0387] According to one embodiment of the present disclosure, the threshold size is used to set the origin of an I / Q chart generated to represent a reflection coefficient corresponding to a free state of the first antenna corresponding to free states corresponding to each of the plurality of frequency bands on an I (in-phase) / Q (quadrature-phase) domain to be the same, and the I / Q chart may include a Smith chart.

[0388] According to one embodiment of the present disclosure, the method may include an operation of backing off transmission power used in the RF circuit based on a state associated with the first antenna being the grip state.

[0389] According to one embodiment of the present disclosure, a storage medium storing computer-readable instructions may be provided.

[0390] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by one or more processors (120) including processing circuitry of the electronic device (101), may cause the electronic device to perform at least one operation.

[0391] According to one embodiment of the present disclosure, the at least one operation may include controlling an RF circuit to provide a first radio frequency (RF) signal to a first antenna among one or more antennas (240) based on a first frequency band.

[0392] According to one embodiment of the present disclosure, the at least one operation may include an operation of identifying a reflected signal corresponding to the first RF signal received through a coupler connected to the first antenna.

[0393] According to one embodiment of the present disclosure, the at least one operation may include an operation of checking a reflection coefficient corresponding to the first frequency band to determine a grip state based on the first RF signal and the reflection signal.

[0394] According to one embodiment of the present disclosure, the at least one operation may include an operation of identifying a first offset corresponding to the first frequency band based on first association information between the plurality of frequency bands and the plurality of offsets.

[0395] According to one embodiment of the present disclosure, the at least one operation may include an operation of determining a first adjusted reflection coefficient by adding the first offset to the determined reflection coefficient.

[0396] According to one embodiment of the present disclosure, the at least one operation may include an operation of identifying a first scaling factor corresponding to the first frequency band based on second association information between the plurality of frequency bands and the plurality of scaling factors.

[0397] According to one embodiment of the present disclosure, the at least one operation may include determining a second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor.

[0398] According to one embodiment of the present disclosure, the at least one operation may include an operation of determining whether a state associated with the first antenna is the grip state based on whether a magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude.

[0399] According to one embodiment of the present disclosure, the operation of determining whether the state associated with the first antenna is the grip state based on whether the magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude may include the operation of determining the state associated with the first antenna is the grip state based on whether the magnitude of the second adjusted reflection coefficient exceeds the threshold magnitude.

[0400] According to one embodiment of the present disclosure, a storage medium storing computer-readable instructions may be provided.

[0401] According to one embodiment of the present disclosure, the instructions, when individually or collectively executed by one or more processors (120) including processing circuitry of the electronic device (101), may cause the electronic device to perform at least one operation.

[0402] According to one embodiment of the present disclosure, the at least one operation may include an operation of setting first association information between a plurality of frequency bands and a plurality of offsets.

[0403] According to one embodiment of the present disclosure, the at least one operation may include an operation of setting second association information between the plurality of frequency bands and the plurality of scaling factors.

[0404] According to one embodiment of the present disclosure, the at least one operation may include controlling a radio frequency (RF) circuit (250) to provide a first RF signal to a first antenna among one or more antennas (240) based on a first frequency band.

[0405] According to one embodiment of the present disclosure, the at least one operation may include an operation of identifying a reflected signal corresponding to the first RF signal received through a coupler connected to the first antenna.

[0406] According to one embodiment of the present disclosure, the at least one operation may include an operation of checking a reflection coefficient corresponding to the first frequency band to determine a grip state based on the first RF signal and the reflection signal.

[0407] According to one embodiment of the present disclosure, the at least one operation may include an operation of identifying a first offset corresponding to the first frequency band based on the first association information.

[0408] According to one embodiment of the present disclosure, the at least one operation may include an operation of determining a first adjusted reflection coefficient by adding the first offset to the determined reflection coefficient.

[0409] According to one embodiment of the present disclosure, the at least one operation may include determining a second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor.

[0410] According to one embodiment of the present disclosure, the at least one operation may include an operation of determining whether a state associated with the first antenna is the grip state based on whether a magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude.

[0411] Electronic devices according to embodiments disclosed herein may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to embodiments disclosed herein are not limited to the aforementioned devices.

[0412] The embodiments of this document and the terms used herein are not intended to limit the technical features described in this document to a specific embodiment, but should be understood to include various modifications, equivalents, or substitutes of the embodiment. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the item, unless the context clearly indicates otherwise. In this document, each of the phrases "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" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0413] The term "module" used in one embodiment of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit, for example. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (circuitry) (ASIC).

[0414] An embodiment of the present document may be implemented as software (e.g., a program (140)) including one or more instructions stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101)). For example, a processor (e.g., a processor (120)) of the machine (e.g., an electronic device (101)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0415] According to one embodiment, the method according to one embodiment disclosed in the present document may be provided as a computer program product. The computer program product may be traded between sellers and buyers as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)) or may be provided through an application store (e.g., Play Store). TM ) or directly between two user devices (e.g., smart phones), online distribution (e.g., downloading or uploading). In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0416] According to one embodiment, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to one embodiment, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to one embodiment, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims

1. In an electronic device (101), One or more antennas (240); A radio frequency (RF) circuit (250) connected to one or more of the antennas; and One or more processors (120) comprising processing circuitry; A memory (130) for storing instructions, wherein the electronic device: Controlling the RF circuit so that a first RF signal is provided to a first antenna among the one or more antennas based on the first frequency band; Checking a reflected signal corresponding to the first RF signal received through a coupler connected to the first antenna, Based on the first RF signal and the reflection signal, a reflection coefficient corresponding to the first frequency band is checked to determine a grip state, Based on first association information between a plurality of frequency bands and a plurality of offsets, a first offset corresponding to the first frequency band is identified, By adding the first offset to the above-mentioned confirmed reflection coefficient, the first adjusted reflection coefficient is confirmed, Based on the second association information between the plurality of frequency bands and the plurality of scaling factors, a first scaling factor corresponding to the first frequency band is identified, and a second adjusted reflection coefficient is identified by multiplying the first adjusted reflection coefficient by the first scaling factor, and An electronic device that causes the state associated with the first antenna to be determined to be the grip state based on whether the magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude.

2. In paragraph 1, The electronic device wherein the plurality of offsets include values ​​of opposite signs of reflection coefficients in free states corresponding to the plurality of frequency bands, and the free state includes a state in which the distance between the first antenna and an external object exceeds a threshold distance.

3. In paragraph 1 or 2, The electronic device wherein the plurality of scaling factors are generated based on the magnitudes of reflection coefficients in grip states corresponding to the plurality of frequency bands, and the grip state includes a state in which the distance between the first antenna and the external object is less than or equal to the threshold distance.

4. In any one of paragraphs 1 to 3, The above instructions, when individually or collectively executed by one or more processors, cause the electronic device to: The electronic device causing the state associated with the first antenna to be determined as the grip state based on the magnitude of the second adjusted reflection coefficient exceeding the threshold magnitude.

5. In any one of paragraphs 1 to 4, The above instructions, when individually or collectively executed by one or more processors, cause the electronic device to: The electronic device causing the state associated with the first antenna to be determined as the free state based on the magnitude of the second adjusted reflection coefficient being less than or equal to the threshold magnitude.

6. In any one of paragraphs 1 to 5, An electronic device wherein a scaling factor corresponding to a relatively high frequency band among the plurality of scaling factors is greater than a scaling factor corresponding to a relatively low frequency band.

7. In any one of paragraphs 1 to 6, The electronic device wherein the threshold size is based on a distance between the one or more antennas and the external object required to perform an operation associated with a specific absorption rate (SAR).

8. In any one of paragraphs 1 to 6, The above critical size is used to set the origin of the I / Q chart generated to represent the reflection coefficient corresponding to the free state of the first antenna corresponding to the free states corresponding to the plurality of frequency bands respectively in the I (in-phase) / Q (quadrature-phase) domain to be the same, and The above I / Q chart is an electronic device including a Smith chart.

9. In any one of paragraphs 1 to 8, The above instructions, when individually or collectively executed by one or more processors, cause the electronic device to: An electronic device that causes the transmission power used in the RF circuit to be backed off based on the state associated with the first antenna being the grip state.

10. In the electronic device (101), One or more antennas (240); A radio frequency (RF) circuit (250) connected to one or more of the antennas; One or more processors (120) including processing circuitry; and A memory (130) for storing instructions, wherein the electronic device: Setting first association information between multiple frequency bands and multiple offsets, Setting second association information between the plurality of frequency bands and the plurality of scaling factors, Controlling the RF circuit so that a first RF signal is provided to a first antenna among one or more antennas (240) based on a first frequency band; Checking a reflected signal corresponding to the first RF signal received through a coupler connected to the first antenna, Based on the first RF signal and the reflection signal, a reflection coefficient corresponding to the first frequency band is checked to determine a grip state, Based on the first association information, a first offset corresponding to the first frequency band is confirmed, By adding the first offset to the above-mentioned confirmed reflection coefficient, the first adjusted reflection coefficient is confirmed, By multiplying the first adjusted reflection coefficient by the first scaling factor, the second adjusted reflection coefficient is determined, and An electronic device that causes the state associated with the first antenna to be determined to be the grip state based on whether the magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude.

11. In paragraph 10, The electronic device wherein the plurality of offsets include values ​​of opposite signs of reflection coefficients in free states corresponding to the plurality of frequency bands, and the free state includes a state in which the distance between the first antenna and an external object exceeds a threshold distance.

12. In paragraph 10 or 11, The electronic device wherein the plurality of scaling factors are generated based on the magnitudes of reflection coefficients in grip states corresponding to the plurality of frequency bands, and the grip state includes a state in which the distance between the first antenna and the external object is less than or equal to the threshold distance.

13. In any one of paragraphs 10 to 12, The above instructions, when individually or collectively executed by one or more processors, cause the electronic device to: The electronic device causing the state associated with the first antenna to be determined as the grip state based on the magnitude of the second adjusted reflection coefficient exceeding the threshold magnitude.

14. In any one of paragraphs 10 to 13, The above instructions, when individually or collectively executed by one or more processors, cause the electronic device to: The electronic device causing the state associated with the first antenna to be determined as the free state based on the magnitude of the second adjusted reflection coefficient being less than or equal to the threshold magnitude.

15. In a storage medium that stores instructions that can be read by a computer, The above instructions, when individually or collectively executed by one or more processors (120) comprising processing circuitry of the electronic device (101), cause the electronic device to perform at least one operation, wherein the at least one operation comprises: An operation of controlling an RF circuit to provide a first radio frequency (RF) signal to a first antenna among one or more antennas (240) based on a first frequency band; An operation of checking a reflected signal corresponding to the first RF signal received through a coupler connected to the first antenna; An operation of checking a reflection coefficient corresponding to the first frequency band to determine a grip state based on the first RF signal and the reflection signal; An operation of identifying a first offset corresponding to a first frequency band based on first association information between a plurality of frequency bands and a plurality of offsets; An operation of confirming a first adjusted reflection coefficient by adding the first offset to the confirmed reflection coefficient; An operation of confirming a first scaling factor corresponding to the first frequency band based on second association information between the plurality of frequency bands and the plurality of scaling factors; An operation of determining a second adjusted reflection coefficient by multiplying the first adjusted reflection coefficient by the first scaling factor, and The storage medium including an operation for determining whether a state associated with the first antenna is the grip state based on whether the magnitude of the second adjusted reflection coefficient is less than or equal to a threshold magnitude.

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