Patent Publication Number: US-2023132490-A1

Title: Antenna module including flexible printed circuit board and electronic device including the antenna module

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     This application is a continuation application of prior application Ser. No. 16/793,360, filed on Feb. 18, 2020, which application is based on and claims priority under 35 U.S.C. § 119(e) of a U.S. Provisional application Ser. No. 62/807,903, filed on Feb. 20, 2019, in the U.S. Patent and Trademark Office, and under 35 U.S.C. § 119(a) of a Korean patent application number 10-2019-0036901, filed on Mar. 29, 2019, in the Korean Intellectual Property Office, the disclosure of each of which is incorporated by reference herein in its entirety. 
    
    
     BACKGROUND 
     1. Field 
     The disclosure relates to an antenna module including a flexible printed circuit board and an electronic device including the antenna module. 
     2. Description of Related Art 
     To meet the demand for wireless data traffic having increased since deployment of 4th generation (4G) communication systems, efforts have been made to develop an improved 5th generation (5G) or pre-5G communication system. Therefore, the 5G or pre-5G communication system is also called a ‘Beyond 4th generation (4G) Network’ or a ‘Post Long Term Evolution (LTE) System’. The 5G communication system is considered to be implemented in higher frequency (mmWave) bands, e.g., 60 GHz bands, so as to accomplish higher data rates. To decrease propagation loss of the radio waves and increase the transmission distance, the beamforming, massive multiple-input multiple-output (MIMO), Full Dimensional MIMO (FD-MIMO), array antenna, an analog beam forming, large scale antenna techniques are discussed in 5G communication systems. In addition, in 5G communication systems, development for system network improvement is under way based on advanced small cells, cloud Radio Access Networks (RANs), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), reception-end interference cancellation and the like. In the 5G system, Hybrid frequency shift keying (FSK) and quadrature amplitude modulation (QAM) (FQAM) and sliding window superposition coding (SWSC) as an advanced coding modulation (ACM), and filter bank multi carrier (FBMC), non-orthogonal multiple access (NOMA), and sparse code multiple access (SCMA) as an advanced access technology have been developed. 
     The Internet, which is a human centered connectivity network where humans generate and consume information, is now evolving to the Internet of Things (IoT) where distributed entities, such as things, exchange and process information without human intervention. The Internet of Everything (IoE), which is a combination of the IoT technology and the Big Data processing technology through connection with a cloud server, has emerged. As technology elements, such as “sensing technology,” “wired/wireless communication and network infrastructure,” “service interface technology,” and “Security technology” have been demanded for IoT implementation, a sensor network, a Machine-to-Machine (M2M) communication, Machine Type Communication (MTC), and so forth have been recently researched. Such an IoT environment may provide intelligent Internet technology services that create a new value to human life by collecting and analyzing data generated among connected things. IoT may be applied to a variety of fields including smart home, smart building, smart city, smart car or connected cars, smart grid, health care, smart appliances and advanced medical services through convergence and combination between existing Information Technology (IT) and various industrial applications. 
     In line with this, various attempts have been made to apply 5G communication systems to IoT networks. For example, technologies such as a sensor network, MTC, and M2M communication may be implemented by beamforming, MIMO, and array antennas. Application of a cloud RAN as the above-described Big Data processing technology may also be considered to be as an example of convergence between the 5G technology and the IoT technology. 
     The above information is presented as background information only to assist with an understanding of the disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with regard to the disclosure. 
     SUMMARY 
     Aspects of the disclosure are to address at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the disclosure is to provide a structure for efficiently deploying antennas in a limited space inside the electronic device. 
     In a 5G mobile communication system, beamforming techniques may be operated in order to mitigate a path loss of radio waves in a high frequency band and to increase a transfer distance of the radio waves. Meanwhile, in order to form beams in various directions, the number of antennas deployed inside an electronic device should be increased. 
     Further, various structures (e.g., metals) that may deteriorate the radio waves may be included inside the electronic device. Accordingly, in order to form beams in various directions in the electronic device, it is necessary to deploy antennas in a plurality of locations inside the electronic device. 
     Additional aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the presented embodiments. 
     In accordance with an aspect of the disclosure, an antenna module is provided. The antenna module includes a flexible printed circuit board (FPCB) including a first surface directed in a first direction and a second surface directed in a second direction that forms a predetermined first angle with respect to the first direction, a first antenna deployed on one surface of the first surface and configured to form a first radiation region in a third direction, and a second antenna deployed on one surface of the second surface and configured to form a second radiation region in a fourth direction. 
     In accordance with another aspect of the disclosure, an electronic device is provided. The electronic device includes a front member directed in a first direction, a rear member directed in a second direction that is opposite to the first direction, a side member surrounding a space between the front member and the rear member, and an antenna module deployed in a closed space formed by the front member, the rear member, and the side member, wherein the antenna module includes a flexible printed circuit board (FPCB) including a first surface facing the front member and a second surface facing the side member, a first antenna deployed on one surface of the first surface and configured to form a first radiation region in a third direction, and a second antenna deployed on one surface of the second surface and configured to form a second radiation region in a fourth direction. 
     In accordance with another aspect of the disclosure, an antenna module is provided. The antenna module includes a flexible printed circuit board (FPCB) including a first surface directed in a first direction and a second surface directed in a second direction that forms a predetermined first angle with respect to the first direction, a first antenna deployed on one surface of the first surface and configured to form a first radiation region in a third direction, a second antenna deployed on one surface of the second surface and configured to form a second radiation region in a fourth direction, a wireless communication chip deployed on the other surface of the flexible printed circuit board and configured to supply a radio frequency signal to the first antenna and the second antenna, and a modem configured to transmit a baseband signal to the wireless communication chip, wherein the modem is configured to transmit a control signal for beamforming to the wireless communication chip, and the wireless communication chip is configured to transmit a radio frequency signal to the first antenna and the second antenna based on the control signal. 
     Other aspects, advantages, and salient features of the disclosure will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses various embodiments of the disclosure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other aspects, features, and advantages of certain embodiments of the disclosure will be more apparent from the following description taken in conjunction with the accompanying drawings, in which: 
         FIG.  1    is a diagram illustrating the structure of an antenna module according to an embodiment of the disclosure; 
         FIG.  2    is a diagram illustrating an antenna module deployed within an electronic device according to an embodiment of the disclosure; 
         FIG.  3    is a diagram illustrating the structure of an antenna module in which antennas are deployed on a flexible printed circuit board according to an embodiment of the disclosure; 
         FIG.  4 A  is a diagram illustrating a side section of an antenna module in which antennas and feeding pads are deployed on a flexible printed circuit board according to an embodiment of the disclosure; 
         FIG.  4 B  is a diagram illustrating the structure of an antenna module in which antennas are deployed on a first surface and a second surface of a flexible printed circuit board according to an embodiment of the disclosure; 
         FIG.  5 A  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board, a printed circuit board, and a wireless communication chip according to an embodiment of the disclosure; 
         FIG.  5 B  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board, a printed circuit board, and a wireless communication chip according to an embodiment of the disclosure; 
         FIG.  5 C  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board, a printed circuit board, and a wireless communication chip according to an embodiment of the disclosure; 
         FIG.  5 D  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board and a wireless communication chip according to an embodiment of the disclosure; 
         FIG.  6 A  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board, a printed circuit board, a wireless communication chip, and a film layer according to an embodiment of the disclosure; 
         FIG.  6 B  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board, a printed circuit board, a wireless communication chip, and a film layer according to an embodiment of the disclosure; 
         FIG.  6 C  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board, a printed circuit board, a wireless communication chip, and a film layer according to an embodiment of the disclosure; 
         FIG.  6 D  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board, a wireless communication chip, and a film layer according to an embodiment of the disclosure; 
         FIG.  7 A  is a diagram illustrating a side section of an antenna module including a flexible printed circuit board, a printed circuit board, a first antenna, and a second antenna according to an embodiment of the disclosure; 
         FIG.  7 B  is a diagram illustrating the structure of an antenna module including a plurality of antennas according to an embodiment of the disclosure; 
         FIG.  7 C  is a diagram illustrating the structure of an antenna module including a plurality of antennas according to an embodiment of the disclosure; 
         FIG.  8    is a graph of s parameters of an antenna module according to an embodiment of the disclosure; 
         FIG.  9 A  is a graph illustrating the deterioration degree of a gain value in accordance with a distance between coupling pads in an antenna module structure according to an embodiment of the disclosure; 
         FIG.  9 B  is a graph illustrating the deterioration degree of a gain value in accordance with a distance between coupling pads in an antenna module structure including an adhesive layer according to an embodiment of the disclosure; 
         FIG.  9 C  is a graph illustrating the deterioration degree of a gain value in accordance with a distance between coupling pads in an antenna module structure including a first dielectric layer according to an embodiment of the disclosure; 
         FIG.  9 D  is a graph illustrating the deterioration degree of a gain value in accordance with a distance between coupling pads in an antenna module structure including a second dielectric layer according to an embodiment of the disclosure; 
         FIG.  10 A  is a diagram illustrating a printed circuit board to which a coupling method is applied according to an embodiment of the disclosure; 
         FIG.  10 B  is a diagram illustrating a printed circuit board to which a coupling method is applied according to an embodiment of the disclosure; 
         FIG.  10 C  is a diagram illustrating a printed circuit board to which a coupling method is applied according to an embodiment of the disclosure; 
         FIG.  11    is a diagram explaining a beamforming operation being performed in an antenna module structure according to an embodiment of the disclosure; and 
         FIG.  12    is a diagram illustrating the structure of an antenna module including a wireless communication chip and a modem according to an embodiment of the disclosure. 
     
    
    
     Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures. 
     DETAILED DESCRIPTION 
     The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the disclosure as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the disclosure. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness. 
     The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the disclosure is provided for illustration purpose only and not for the purpose of limiting the disclosure as defined by the appended claims and their equivalents. 
     It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a component surface” includes reference to one or more of such surfaces. 
     In explaining embodiments of the disclosure, explanation of technical contents that are well known in the art to which the disclosure pertains and are not directly related to the disclosure will be omitted. This is to transfer the subject matter of the disclosure more clearly without obscuring the same through omission of unnecessary explanations. 
     For the same reason, in the accompanying drawings, sizes and relative sizes of some constituent elements may be exaggerated, omitted, or briefly illustrated. Further, sizes of the respective constituent elements do not completely reflect the actual sizes thereof. In the drawings, the same drawing reference numerals are used for the same or corresponding elements across various figures. 
     The aspects and features of the disclosure and methods for achieving the aspects and features will be apparent by referring to the embodiments to be described in detail with reference to the accompanying drawings. However, the disclosure is not limited to the embodiments disclosed hereinafter, and it can be implemented in diverse forms. The matters defined in the description, such as the detailed construction and elements, are only specific details provided to assist those of ordinary skill in the art in a comprehensive understanding of the disclosure, and the disclosure is only defined within the scope of the appended claims. In the entire description of the disclosure, the same drawing reference numerals are used for the same elements across various figures. 
     In this case, it will be understood that each block of the flowchart illustrations, and combinations of blocks in the flowchart illustrations, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart block or blocks. These computer program instructions may also be stored in a computer usable or computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer usable or computer-readable memory produce an article of manufacture including instruction means that implement the function specified in the flowchart block or blocks. The computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operations to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions that execute on the computer or other programmable apparatus provide operations for implementing the functions specified in the flowchart block or blocks. 
     Also, each block of the flowchart illustrations may represent a module, segment, or portion of code, which includes one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the blocks may occur out of the order. For example, two blocks shown in succession may in fact be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. 
     In this case, the term “unit”, as used in an embodiment, means, but is not limited to, a software or hardware component, such as field-programmable gate array (FPGA) or application-specific integrated circuit (ASIC), which performs certain tasks. However, “unit” is not meant to be limited to software or hardware. The term “unit” may advantageously be configured to reside on the addressable storage medium and configured to execute on one or more processors. Thus, “unit” may include, by way of example, components, such as software components, object-oriented software components, class components and task components, processes, functions, attributes, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. The functionality provided for in the components and “units” may be combined into fewer components and “units” or further separated into additional components and “units”. Further, the components and “units” may be implemented to operate one or more central processing units (CPUs) in a device or a security multimedia card. Further, in an embodiment, “unit” may include one or more processors. 
       FIG.  1    is a diagram illustrating the structure of an antenna module according to an embodiment of the disclosure. 
     Referring to  FIG.  1   , an antenna module  100  may include a printed circuit board (PCB)  101  on which at least one layer is laminated, a first antenna  121  deployed on an upper end surface of the printed circuit board  101 , a second antenna  123  deployed spaced apart for a predetermined distance from the first antenna  121  on the upper end surface of the printed circuit board, a wireless communication chip  111  deployed on a lower end surface of the printed circuit board  101 , a first feeding line  131  configured to electrically connect the wireless communication chip  111  and the first antenna  121  to each other in the printed circuit board  101 , and a second feeding line  133  configured to electrically connect the wireless communication chip  111  and the second antenna  123  to each other in the printed circuit board  101 . 
     According to the related art, it is difficult to deploy an antenna on a side surface of the printed circuit board  101 . More specifically, a space enough to deploy antennas therein can be secured on the upper end surface or the lower end surface of the printed circuit board  101 , and referring to  FIG.  1   , the first antenna  121  and the second antenna  123  can be deployed on the upper end surface of the printed circuit board  101 . In contrast, the side surface of the printed circuit board  101  is so configured that a plurality of layers are laminated thereon, and thus it is difficult to form a feeding line on the side surface of the printed circuit board  101 , and there is no sufficient space for deploying the antennas therein. 
     According to the related art, in order to deploy the antennas on the side surface of the printed circuit board  101 , a sufficient space should be secured on the side surface of the printed circuit board  101  by increasing the number of layers laminated in the printed circuit board  101 . In addition, in order to form feeding lines on the side surface of the printed circuit board  101 , separate feeding lines may be required. 
     In a 5G mobile communication system using a high frequency band, an antenna module structure in which antennas are deployed on the side surface of the printed circuit board  101  may be required. The antenna module structure required in the 5G mobile communication system will be described later with reference to  FIG.  2   . 
       FIG.  2    is a diagram illustrating an antenna module deployed within an electronic device according to an embodiment of the disclosure. 
     Referring to  FIG.  2   , an electronic device (e.g., terminal or laptop)  200  may include a first antenna group  210  capable of radiating radio waves to a front plate or a rear plate of the electronic device and a second antenna group  220  capable of radiating radio waves to the side surface of the electronic device  200 . 
     According to the related art, the upper end surface of the printed circuit board deployed inside the electronic device  200  may face the front plate or the rear plate of the electronic device. Meanwhile, from the viewpoint of the antenna performance and the usage of an inner space of the electronic device, it is preferable to deploy the second antenna group  220  radiating the radio waves to the side surface of the electronic device  200  on the side surface of the printed circuit board deployed inside the electronic device  200 . 
     In particular, in the 5G mobile communication system using the high frequency band, the number of antennas deployed on the inside cannot help being increased to form beams in various directions. Accordingly, if it is assumed that antennas are unable to be deployed on the side surface of the printed circuit board in the electronic device using the 5G mobile communication system, the space in which the antennas can be deployed inside the electronic device cannot help being narrowed. 
     Although  FIG.  2    illustrates only a case where the first antenna group  210  includes four antennas and the second antenna group  220  includes four antennas, 16 or more antennas may be deployed in each of the first antenna group  210  and the second antenna group  220  in the 5G mobile communication system. That is, there is a need for an efficient antenna module structure for deploying a large number of antennas in an electronic device to which the 5G mobile communication system is applied. Accordingly, an antenna module structure capable of efficiently deploying antennas will be hereinafter disclosed. 
       FIG.  3    is a diagram illustrating the structure of an antenna module in which antennas are deployed on a flexible printed circuit board according to an embodiment of the disclosure. 
     Referring to  FIG.  3   , an antenna module  300  may include a flexible printed circuit board (FPCB)  301  including a first surface directed in a first direction and a second surface directed in a second direction that forms a predetermined first angle with respect to the first direction, a first antenna  311  deployed on one surface of the first surface and configured to form a first radiation region in a third direction, and a second antenna  313  deployed on one surface of the second surface and configured to form a second radiation region in a fourth direction. According to various embodiments, the flexible printed circuit board may be bent or folded by an external force. 
     According to an embodiment, the antenna module  300  may be included inside an electronic device. According to various embodiments, in the case where the antenna module  300  is mounted inside the electronic device, the first direction may be a direction of a front plate or a rear plate of the electronic device, and the first antenna  311  deployed on the first surface may perform beamforming in the direction of a front or rear surface of the electronic device. 
     According to an embodiment, in the case where the antenna module  300  is mounted inside the electronic device, the second direction may be a direction of a side surface of the electronic device, and the second antenna  313  deployed on the second surface may perform beamforming in the direction of the side surface of the electronic device. The first antenna  311  may be a broadside antenna of the electronic device, and the second antenna  313  may be an endfire antenna of the electronic device. 
     According to an embodiment, a partial region of a region that forms the first radiation region may overlap a partial region of a region that forms the second radiation region, and the partial region of the region that forms the first radiation region may not overlap the partial region of the region that forms the second radiation region. 
     According to an embodiment, the antenna module  300  may include a controller (not illustrated) electrically connected to the first antenna  311  and the second antenna  313  and configured to control radiation directions of radio waves being radiated through the first antenna  311  and the second antenna  313 . According to various embodiments, the controller may be deployed on a lower end surface of the flexible printed circuit board  301 . For example, the controller may be included in a wireless communication chip deployed on the lower end surface of the flexible printed circuit board. 
     According to an embodiment, the first antenna  311  and the second antenna  313  included in the antenna module  300  may be deployed on an upper end surface of the same flexible printed circuit board  301 , and in accordance with the bending or folding of the flexible printed circuit board  301 , the direction in which the first antenna  311  performs beamforming and the direction in which the second antenna  313  performs beamforming may differ from each other. According to various embodiments, two or more antennas performing beamforming in different directions may be deployed on one flexible printed circuit board  301  even without adding a separate layer. 
     According to an embodiment, the first antenna  311  and the second antenna  313  may include at least one of a patch antenna, a monopole antenna, a spiral antenna, a wave antenna, a yagiuda antenna, a loop antenna, a Vivaldi antenna, or a holographic antenna. 
     According to an embodiment, the patch antenna may be small and light, may be easily arrayed, and may be easily integrated onto a printed circuit board or a flexible printed circuit board. Further, polarization of the patch antenna may be easily adjusted. According to various embodiments, the patch antenna may be suitable to a printed circuit board or a flexible printed circuit board having low permittivity and great thickness. 
     According to an embodiment, the dipole antenna may be in the shape in which a feeding line is connected between two conductor rods. According to various embodiments, the dipole antenna may be used for high frequency or very high frequency. 
     According to an embodiment, the monopole antenna may be in the shape of a straight line, and it may have a structure in which a ground that is not a conductor is deployed on one side. According to various embodiments, the monopole antenna may have a shorter length than the length of the dipole antenna, and it may be a non-directional antenna. For example, the monopole antenna may be used for a mobile communication terminal or frequency modulation (FM) radio receiver equipment. 
     According to an embodiment, the loop antenna may be a directional antenna, and it may be used in the field in which antenna efficiency is not so important as a signal-to-noise ratio. According to various embodiments, the loop antenna may be used as a direction finding antenna or a probe antenna. 
     According to an embodiment, the spiral antenna may have the ultra-wideband characteristic, and it may generate circular polarization. According to various embodiments, the spiral antenna may be used for satellite communication or radar. 
     According to an embodiment, the yagiuda antenna may have high directivity. According to various embodiments, the yagiuda antenna may be installed outside as an antenna for a wireless set or a television receiver. 
     According to an embodiment, the Vivaldi antenna may have the wideband characteristic and high directivity. According to various embodiments, the Vivaldi antenna may be used as a reference antenna for measurement or an antenna for radar. 
     According to an embodiment, the holographic antenna may tilt beams using a flat-plate reflector as an antenna for creating a signal. According to various embodiments, the holographic antenna may be used for satellite communication or radar. 
     On the other hand,  FIG.  3    illustrates an embodiment of the disclosure, and thus the scope of the disclosure should not be limited to the embodiment of  FIG.  3   . The flexible printed circuit board  301  may be bent or folded in various shapes, and the antenna module may perform the beamforming in various directions corresponding to the shape of the folded flexible printed circuit board. 
       FIG.  4 A  is a diagram illustrating a side section of an antenna module in which antennas and feeding pads are deployed on a flexible printed circuit board according to an embodiment of the disclosure. 
     Referring to  FIG.  4 A , an antenna module  400  may include a flexible printed circuit board (FPCB)  401  including a first surface directed in a first direction and a second surface directed in a second direction that forms a predetermined first angle with respect to the first direction, a first antenna  411  deployed on one surface of the first surface and configured to form a first radiation region in a third direction, a second antenna  413  deployed on one surface of the first surface, deployed spaced apart from the first antenna  411 , and configured to form a second radiation region in a third direction, a third antenna  415  deployed on one surface of the second surface and configured to form a third radiation region in a fourth direction, a first feeding pad  421  deployed on the other surface of the first surface, a second feeding pad  423  deployed on the other surface of the first surface, and a third feeding pad  425  deployed on the other surface of the first surface. According to various embodiments, the first feeding pad  421 , the second feeding pad  423 , and the third feeding pad  425  may be deployed on the other surface of the flexible printed circuit board  401  to be spaced apart from one another. According to an embodiment, the antenna module  400  may include a first feeding line  431  configured to electrically connect the first antenna  411  and the first feeding pad  421  to each other in the flexible printed circuit board  401 . According to various embodiments, the first feeding line  431  may transfer a radio frequency (RF) signal being supplied through the first feeding pad  421  to the first antenna  411 . 
     According to an embodiment, the antenna module  400  may include a second feeding line  433  configured to electrically connect the second antenna  413  and the second feeding pad  423  to each other in the flexible printed circuit board  401 . According to various embodiments, the second feeding line  433  may transfer a radio frequency (RF) signal being supplied through the second feeding pad  423  to the second antenna  413 . 
     According to an embodiment, the antenna module  400  may include a third feeding line  435  configured to electrically connect the third antenna  415  and the third feeding pad  425  to each other in the flexible printed circuit board  401 . According to various embodiments, the third feeding line  435  may transfer a radio frequency (RF) signal being supplied through the third feeding pad  425  to the third antenna  415 . 
     According to an embodiment, the antenna module  400  may be included inside an electronic device. According to various embodiments, in the case where the antenna module  400  is mounted inside the electronic device, the first direction may be a direction of a front plate or a rear plate of the electronic device, and the first antenna  411  and the second antenna  413  deployed on the first surface may perform beamforming in the direction of a front or rear surface of the electronic device. 
     According to an embodiment, in the case where the antenna module  400  is mounted inside the electronic device, the second direction may be a direction of a side surface of the electronic device, and the third antenna  415  deployed on the second surface may perform beamforming in the direction of the side surface of the electronic device. According to various embodiments, the first antenna  411  and the second antenna  413  may be broadside antennas of the electronic device, and the third antenna  415  may be an endfire antenna of the electronic device. 
     According to an embodiment, a region forming the first radiation region may be equal to a region forming the second radiation region. According to various embodiments, a partial region of a region that forms the first radiation region and the second radiation region may not overlap a partial region of a region that forms the third radiation region. 
     According to an embodiment, the antenna module  400  may include a controller (not illustrated) electrically connected to the first antenna  411 , the second antenna  413 , and the third antenna  415  and configured to control radiation directions of radio waves being radiated through the first antenna  411 , the second antenna  413 , and the third antenna  415 . According to various embodiments, the controller may be deployed on a lower end surface of the flexible printed circuit board  401 . For example, the controller may be included in a wireless communication chip deployed on the lower end surface of the flexible printed circuit board. 
       FIG.  4 B  is a diagram illustrating the structure of the antenna module  400  of  FIG.  4 A , in which antennas are deployed on a first surface and a second surface of a flexible printed circuit board according to an embodiment of the disclosure. 
     Referring to  FIG.  4 B , the antenna module  400  may include the first antenna  411  and the second antenna  413  deployed on an upper end surface of the flexible printed circuit board  401 , and the third antenna  415  deployed on a side surface of the flexible printed circuit board  401 . According to various embodiment, the antenna module  400  may be deployed in a closed space inside the electronic device. For example, the first antenna  411  and the second antenna  413  deployed on the upper end surface of the flexible printed circuit board  401  may radiate radio waves in directions of a front or rear surface of the electronic device, and the third antenna  415  deployed on the side surface of the flexible printed circuit board  401  may radiate radio waves to the side surface of the electronic device. 
     According to an embodiment, in the case where the antenna module  400  is deployed inside the electronic device, the first antenna  411  and the second antenna  413  may be broadside antennas of the electronic device, and the third antenna  415  may be an endfire antenna of the electronic device. According to various embodiment, by deploying the broadside antennas and the endfire antenna in one flexible printed circuit board  401  in all, a larger number of antennas can be deployed inside the electronic device, and the antennas can be deployed in various locations inside the electronic device. 
     On the other hand,  FIGS.  4 A and  4 B  illustrate an embodiment of the disclosure, and thus the scope of the disclosure should not be limited to the embodiment of  FIGS.  4 A and  4 B . For example, the number of antennas deployed on the first surface of the flexible printed circuit board and the number of antennas deployed on the second surface of the flexible printed circuit board may be changed. 
       FIG.  5 A  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board, a printed circuit board, and a wireless communication chip according to an embodiment of the disclosure. 
     Referring to  FIG.  5 A , an antenna module  500   a  may include a flexible printed circuit board  501  directed in a first direction, a first antenna  511  deployed on one surface of the flexible printed circuit board  501 , a first feeding pad  521  deployed on the other surface of the flexible printed circuit board  501 , and a first feeding line  561  configured to electrically connect the first antenna  511  and the first feeding pad  521  to each other. 
     According to an embodiment, the antenna module  500   a  may include a printed circuit board  531  deployed spaced apart for a predetermined first length from the other surface of the flexible printed circuit board  501  and having at least one layer laminated therein, a second feeding pad  541  deployed on one surface of the printed circuit board  531  corresponding to the first feeding pad  521 , a wireless communication chip  551  deployed on the other surface of the printed circuit board  531 , and a second feeding line  571  configured to electrically connect the wireless communication chip  551  and the second feeding pad  541  to each other in the printed circuit board  531 . According to various embodiments, the first length may be determined based on a wavelength of radio waves being radiated through the first antenna  511  or a coupling method. For example, it may be preferable to configure the first length to a value that is equal to or larger than 5 μm and is equal to or smaller than 500 μm. 
     According to an embodiment, because a space is formed between the flexible printed circuit board  501  and the printed circuit board  531 , the flexible printed circuit board  501  and the printed circuit board  531  may be separated from each other. According to various embodiments, as a feeding method from the second feeding pad  541  to the first feeding pad  521 , a capacitive coupling, inductive coupling, or resonant coupling method may be used. 
     According to an embodiment, the wireless communication chip  551  may transmit signals for radiating radio waves (e.g., basic signal, intermediate frequency signal, and local frequency signal) to the second feeding pad  541  through the second feeding line  571 . According to various embodiments, the signal transmitted to the second feeding pad  541  may be transmitted to the first feeding pad  521  through a coupling pad method, and it may be transmitted to the first antenna  511  through the first feeding line  561 . 
     According to an embodiment, in order for the first feeding pad  521  and the second feeding pad  541  to perform feeding through the coupling method, it is required that at least a part of the first feeding pad  521  and at least a part of the second feeding pad  541  face each other. According to various embodiments, in the coupling feeding method, it may be most preferable that the first feeding pad  521  and the second feeding pad  541  are deployed to face each other. 
       FIG.  5 B  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board, a printed circuit board, and a wireless communication chip according to an embodiment of the disclosure. 
     Referring to  FIG.  5 B , an antenna module  500   b  may include a flexible printed circuit board (FPCB)  502  including a first surface directed in a first direction and a second surface directed in a second direction that forms a predetermined first angle with respect to the first direction, a first antenna  512  deployed on one surface of the flexible printed circuit board  502  and configured to form a first radiation region in a third direction, a second antenna  513  deployed on one surface of the second surface and configured to form a second radiation region in a fourth direction, a first feeding pad  522  deployed on the other surface of the first surface, a second feeding pad  523  deployed on the other surface of the first surface, a first feeding line  562  configured to electrically connect the first antenna  512  and the first feeding pad  522  to each other, and a second feeding line  563  configured to electrically connect the second antenna  513  and the second feeding pad  523  to each other. 
     According to an embodiment, the antenna module  500   b  may include a printed circuit board  532  deployed spaced apart for a predetermined first length from the other surface of the first surface and having at least one layer laminated therein, a third feeding pad  542  deployed on one surface of the printed circuit board  532  corresponding to the first feeding pad  522 , a fourth feeding pad  543  deployed on one surface of the printed circuit board  532  corresponding to the second feeding pad  523 , a wireless communication chip  552  deployed on the other surface of the printed circuit board  532 , a third feeding line  572  configured to electrically connect the wireless communication chip  552  and the third feeding pad  542  to each other in the printed circuit board  532 , and a fourth feeding line  573  configured to electrically connect the wireless communication chip  552  and the fourth feeding pad  543  to each other in the printed circuit board  532 . According to various embodiments, the first length may be determined based on a wavelength of radio waves being radiated through the first antenna  512  or the second antenna  513  and a coupling method. For example, it may be preferable to configure the first length to a value that is equal to or larger than 5 μm and is equal to or smaller than 500 μm. 
     According to an embodiment, because a space is formed between the flexible printed circuit board  502  and the printed circuit board  532 , the flexible printed circuit board  502  and the printed circuit board  532  may be separated from each other. According to various embodiments, as a feeding method from the third feeding pad  542  to the first feeding pad  522  and a feeding method from the fourth feeding pad  543  to the second feeding pad  523 , a capacitive coupling, inductive coupling, or resonant coupling method may be used. 
     According to an embodiment, the wireless communication chip  552  may transmit signals for radiating radio waves (e.g., basic signal, intermediate frequency signal, and local frequency signal) to the third feeding pad  542  and the fourth feeding pad  543  through the third feeding line  572  and the fourth feeding line  573 . According to various embodiments, the signal transmitted to the third feeding pad  542  may be transmitted to the first feeding pad  522  through a coupling pad method, and it may be transmitted to the first antenna  512  through the first feeding line  562  (the signal transfer through the fourth feeding pad may also be the same as the signal transfer through the third feeding pad). 
       FIG.  5 C  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board, a printed circuit board, and a wireless communication chip according to an embodiment of the disclosure. 
     Referring to  FIG.  5 C , an antenna module  500   c  may include a flexible printed circuit board  503  directed in a first direction, a first antenna  514  deployed on one surface of the flexible printed circuit board  503 , and a first feeding pad  524  deployed on the other surface of the flexible printed circuit board  503 . According to various embodiments, the first antenna  514  and the first feeding pad  524  may be directly connected to each other. 
     According to an embodiment, the antenna module  500   c  may include a printed circuit board  533  deployed spaced apart for a predetermined first length from the other surface of the flexible printed circuit board  503  and having at least one layer laminated therein, a second feeding pad  544  deployed on one surface of the printed circuit board  533  corresponding to the first feeding pad  524 , a wireless communication chip  553  deployed spaced apart from the second feeding pad  544  on one surface of the printed circuit board  533 , and a first feeding line  570  configured to electrically connect the wireless communication chip  553  and the second feeding pad  544  to each other in the printed circuit board  533 . According to various embodiments, the first length may be determined based on a wavelength of radio waves being radiated through the first antenna  514  or a coupling method. For example, it may be preferable to configure the first length to a value that is equal to or larger than 5 μm and is equal to or smaller than 500 μm. 
     According to an embodiment, because a space is formed between the flexible printed circuit board  503  and the printed circuit board  533 , the flexible printed circuit board  503  and the printed circuit board  533  may be separated from each other. According to various embodiments, as a feeding method from the second feeding pad  544  to the first feeding pad  524 , a capacitive coupling, inductive coupling, or resonant coupling method may be used. 
     According to an embodiment, the wireless communication chip  553  may transmit signals for radiating radio waves (e.g., basic signal, intermediate frequency signal, and local frequency signal) to the second feeding pad  544  through the first feeding line  570 . According to various embodiments, the signal transmitted to the second feeding pad  544  may be transmitted to the first feeding pad  524  through a coupling pad method, and the signal transmitted to the first feeding pad  524  may be directly transmitted to the first antenna  514 . 
       FIG.  5 D  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board and a wireless communication chip according to an embodiment of the disclosure. 
     Referring to  FIG.  5 D , an antenna module  500   d  may include a flexible printed circuit board  504  directed in a first direction, a first antenna  515  deployed on one surface of the flexible printed circuit board  504 , a first feeding pad  525  deployed on the other surface of the flexible printed circuit board  504 , and a first feeding line  564  configured to electrically connect the first antenna  515  and the first feeding pad  525  to each other. According to various embodiments, the flexible printed circuit board may include a plurality of layers, and through the plurality of layers constituting the flexible printed circuit board  504 , a distance between the first antenna  515  for radiating a radio frequency signal of a high frequency band and the wireless communication chip  554  can be secured. 
     According to an embodiment, the antenna module  500   d  may include the wireless communication chip  554  deployed spaced apart for the predetermined first length from the other surface of the flexible printed circuit board  504  and a second feeding pad  545  deployed on one surface of the wireless communication chip  554  corresponding to the first feeding pad  525 . According to various embodiments, the first length may be determined based on a wavelength of radio waves being radiated through the first antenna  515  or a coupling method. For example, it may be preferable to configure the first length to a value that is equal to or larger than 5 μm and is equal to or smaller than 500 μm. 
     According to an embodiment, because a space is formed between the flexible printed circuit board  504  and the wireless communication chip  554 , the flexible printed circuit board  504  and the wireless communication chip  554  may be separated from each other. According to various embodiments, as a feeding method from the second feeding pad  545  to the first feeding pad  525 , a capacitive coupling, inductive coupling, or resonant coupling method may be used. 
     According to an embodiment, the wireless communication chip  554  may transmit signals for radiating radio waves (e.g., basic signal, intermediate frequency signal, and local frequency signal) to the second feeding pad  545 . According to various embodiments, the signal transmitted to the second feeding pad  545  may be transmitted to the first feeding pad  525  through a coupling pad method, and it may be transmitted to the first antenna  515  through the first feeding line  564 . 
     According to an embodiment, in order for the first feeding pad  525  and the second feeding pad  545  to perform feeding through the coupling method, it is required that at least a part of the first feeding pad  525  and at least a part of the second feeding pad  545  face each other. According to various embodiments, in the coupling feeding method, it may be most preferable that the first feeding pad  525  and the second feeding pad  545  are deployed to face each other. 
     On the other hand, because  FIGS.  5 A to  5 D  illustrate various embodiments of the disclosure, the scope of the disclosure should not be limited to the embodiments of  FIGS.  5 A to  5 D . The antenna module structure may be changed within a range permitted by the ordinary technical level in accordance with designer&#39;s needs. 
       FIG.  6 A  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board, a printed circuit board, a wireless communication chip, and a film layer according to an embodiment of the disclosure. 
     Referring to  FIG.  6 A , an antenna module  600   a  may include a flexible printed circuit board  601  directed in a first direction, a first antenna  611  deployed on one surface of the flexible printed circuit board  601 , a first feeding pad  621  deployed on the other surface of the flexible printed circuit board  601 , and a first feeding line  671  configured to electrically connect the first antenna  611  and the first feeding pad  621  to each other. 
     According to an embodiment, the antenna module  600   a  may include a film layer  631  configured to uniformly maintain a distance between the other surface of a first surface of the flexible printed circuit board  601  and one surface of a printed circuit board  641 , the printed circuit board  641  in which at least one layer is laminated, a second feeding pad  651  deployed on one surface of the printed circuit board  641  corresponding to the first feeding pad  621 , a wireless communication chip  661  deployed on the other surface of the printed circuit board  641 , and a second feeding line  681  configured to electrically connect the wireless communication chip  661  and the second feeding pad  651  to each other in the printed circuit board  641 . According to various embodiments, by the film layer  631 , the flexible printed circuit board  601  may be uniformly spaced apart for a predetermined first length from the printed circuit board  641 . For example, the first length may be determined based on a wavelength of radio waves being radiated through the first antenna  611  or a coupling method. 
     According to an embodiment, because a space is formed between the flexible printed circuit board  601  and the printed circuit board  641  by the film layer  631 , the flexible printed circuit board  601  and the printed circuit board  641  may be separated from each other. According to various embodiments, as a feeding method from the second feeding pad  651  to the first feeding pad  621 , a capacitive coupling, inductive coupling, or resonant coupling method may be used. 
     According to an embodiment, the film layer  631  may further include an adhesive layer configured to make the other surface of the first surface of the flexible printed circuit board  601  adhere to the one surface of the printed circuit board  641 . 
     According to an embodiment, the adhesive layer may be composed of adhesives, and after the adhesives are deployed between the flexible printed circuit board  601  and the printed circuit board  641 , an additional process, such as heating or photolithography, may be performed. According to various embodiments, the adhesive layer may be composed of a material capable of adhering even at ambient temperature. According to an embodiment, in order to increase the coupling effect between the first feeding pad  621  and the second feeding pad  651 , the film layer  631  may be composed of a material having permittivity that is equal to or higher than a predetermined reference value. 
     According to an embodiment, the wireless communication chip  661  may transmit signals for radiating radio waves (e.g., basic signal, intermediate frequency signal, and local frequency signal) to the second feeding pad  651  through the second feeding line  681 . According to various embodiments, the signal transmitted to the second feeding pad  651  may be transmitted to the first feeding pad  621  through a coupling pad method, and it may be transmitted to the first antenna  611  through the first feeding line  671 . 
     According to an embodiment, in order for the first feeding pad  621  and the second feeding pad  651  to perform feeding through the coupling method, it is required that at least a part of the first feeding pad  621  and at least a part of the second feeding pad  651  face each other. According to various embodiments, in the coupling feeding method, it may be most preferable that the first feeding pad  621  and the second feeding pad  651  are deployed to face each other. 
       FIG.  6 B  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board, a printed circuit board, a wireless communication chip, and a film layer according to an embodiment of the disclosure. 
     Referring to  FIG.  6 B , an antenna module  600   b  may include a flexible printed circuit board  602  including a first surface directed in a first direction and a second surface directed in a second direction that forms a predetermined first angle with respect to the first direction, a first antenna  612  deployed on one surface of the flexible printed circuit board  602 , a second antenna  613  deployed on one surface of the second surface, a first feeding pad  622  deployed on the other surface of the first surface, a second feeding pad  623  deployed on the other surface of the first surface, a first feeding line  672  configured to electrically connect the first antenna  612  and the first feeding pad  622  to each other, and a second feeding line  673  configured to electrically connect the second antenna  613  and the second feeding pad  623  to each other. 
     According to an embodiment, the antenna module  600   b  may include a film layer  632  deployed between the other surface of the first surface of the flexible printed circuit board  602  and one surface of a printed circuit board  642  and configured to uniformly maintain a distance between the other surface of the first surface of the flexible printed circuit board  602  and the one surface of the printed circuit board  642 , the printed circuit board  642  in which at least one layer is laminated, a third feeding pad  652  deployed on one surface of the printed circuit board  642  corresponding to the first feeding pad  622 , a fourth feeding pad  653  deployed on one surface of the printed circuit board  642  corresponding to the second feeding pad  623 , a wireless communication chip  662  deployed on the other surface of the printed circuit board  642 , a third feeding line  682  configured to electrically connect the wireless communication chip  662  and the third feeding pad  652  to each other in the printed circuit board  642 , and a fourth feeding line  683  configured to electrically connect the wireless communication chip  662  and the fourth feeding pad  653  to each other in the printed circuit board  642 . According to various embodiments, by the film layer  632 , the flexible printed circuit board  602  may be uniformly spaced apart for a predetermined first length from the printed circuit board  642 . For example, the first length may be determined based on a wavelength of radio waves being radiated through the first antenna  612  or the second antenna  613  or a coupling method. 
     According to an embodiment, because a space is formed between the flexible printed circuit board  602  and the printed circuit board  642 , the flexible printed circuit board  602  and the printed circuit board  642  may be separated from each other. According to various embodiments, as a feeding method from the third feeding pad  652  to the first feeding pad  622  and a feeding method from the fourth feeding pad  653  to the second feeding pad  623 , a capacitive coupling, inductive coupling, or resonant coupling method may be used. 
     According to an embodiment, the wireless communication chip  662  may transmit signals for radiating radio waves (e.g., basic signal, intermediate frequency signal, and local frequency signal) to the third feeding pad  652  and the fourth feeding pad  653  through the third feeding line  682  and the fourth feeding line  683 . According to various embodiments, the signal transmitted to the third feeding pad  652  may be transmitted to the first feeding pad  622  through a coupling pad method, and it may be transmitted to the first antenna  612  through the first feeding line  672  (the signal transfer through the fourth feeding pad may also be the same as the signal transfer through the third feeding pad). 
       FIG.  6 C  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board, a printed circuit board, a wireless communication chip, and a film layer according to an embodiment of the disclosure. 
     Referring to  FIG.  6 C , an antenna module  600   c  may include a flexible printed circuit board  603  directed in a first direction, a first antenna  614  deployed on one surface of the flexible printed circuit board  603 , and a first feeding pad  624  deployed on one surface of the flexible printed circuit board  603 . According to various embodiments, the first antenna  614  and the first feeding pad  624  may be directly connected to each other. 
     According to an embodiment, the antenna module  600   c  may include a film layer  633  deployed between the other surface of a first surface of the flexible printed circuit board  603  and one surface of a printed circuit board  643  and configured to uniformly maintain a distance between the other surface of the first surface of the flexible printed circuit board  603  and the one surface of the printed circuit board  643 , the printed circuit board  643  in which at least one layer is laminated, a second feeding pad  654  deployed on one surface of the printed circuit board  643  corresponding to the first feeding pad  624 , a wireless communication chip  663  deployed spaced apart from the second feeding pad  654  on one surface of the printed circuit board  643 , and a first feeding line  684  configured to electrically connect the wireless communication chip  663  and the second feeding pad  654  to each other in the printed circuit board  643 . According to various embodiments, by the film layer  633 , the flexible printed circuit board  603  may be uniformly spaced apart for a predetermined first length from the printed circuit board  643 . For example, the first length may be determined based on a wavelength of radio waves being radiated through the first antenna  614  or a coupling method. 
     According to an embodiment, because a space is formed between the flexible printed circuit board  603  and the printed circuit board  643 , the flexible printed circuit board  603  and the printed circuit board  643  may be separated from each other. According to various embodiments, as a feeding method from the second feeding pad  654  to the first feeding pad  624 , a capacitive coupling, inductive coupling, or resonant coupling method may be used. 
     According to an embodiment, the wireless communication chip  663  may transmit signals for radiating radio waves (e.g., basic signal, intermediate frequency signal, and local frequency signal) to the second feeding pad  654  through the first feeding line  684 . According to various embodiments, the signal transmitted to the second feeding pad  654  may be transmitted to the first feeding pad  624  through a coupling pad method, and the signal transmitted to the first feeding pad  624  may be directly transmitted to the first antenna  614 . 
       FIG.  6 D  is a diagram illustrating the structure of an antenna module including a flexible printed circuit board, a wireless communication chip, and a film layer according to an embodiment of the disclosure. 
     Referring to  FIG.  6 D , an antenna module  600   d  may include a flexible printed circuit board  604  directed in a first direction, a first antenna  615  deployed on one surface of the flexible printed circuit board  604 , a first feeding pad  625  deployed on the other surface of the flexible printed circuit board  604 , and a first feeding line  685  configured to electrically connect the first antenna  615  and the first feeding pad  625  to each other. According to various embodiments, the flexible printed circuit board  604  may include a plurality of layers, and through the plurality of layers constituting the flexible printed circuit board, a distance between the first antenna  615  for radiating a radio frequency signal of a high frequency band and the wireless communication chip  664  can be secured. 
     According to an embodiment, the antenna module  600   d  may include a film layer  631  configured to uniformly maintain a distance between the other surface of a first surface of the flexible printed circuit board  601  and one surface of the wireless communication chip  661 , the wireless communication chip  661  having one surface facing the other surface of the film layer  634 , and a second feeding pad  655  deployed on one surface of the wireless communication chip  664  corresponding to the first feeding pad  625 . According to various embodiments, by the film layer  634 , the flexible printed circuit board  604  may be uniformly spaced apart for a predetermined first length from the wireless communication chip  664 . For example, the first length may be determined based on a wavelength of radio waves being radiated through the first antenna  615  or a coupling method. 
     According to an embodiment, because a space is formed between the flexible printed circuit board  604  and the wireless communication chip  664 , the flexible printed circuit board  604  and the wireless communication chip  664  may be separated from each other. According to various embodiments, as a feeding method from the second feeding pad  655  to the first feeding pad  625 , a capacitive coupling, inductive coupling, or resonant coupling method may be used. 
     According to an embodiment, the wireless communication chip  664  may transmit signals for radiating radio waves (e.g., basic signal, intermediate frequency signal, and local frequency signal) to the second feeding pad  655 . According to various embodiments, the signal transmitted to the second feeding pad  655  may be transmitted to the first feeding pad  625  through a coupling pad method, and it may be transmitted to the first antenna  615  through the first feeding line  685 . 
     According to an embodiment, in order for the first feeding pad  625  and the second feeding pad  655  to perform feeding through the coupling method, it is required that at least a part of the first feeding pad  625  and at least a part of the second feeding pad  655  face each other. According to various embodiments, in the coupling feeding method, it may be most preferable that the first feeding pad  625  and the second feeding pad  655  are deployed to face each other. 
     On the other hand, because  FIGS.  6 A to  6 D  illustrate embodiments of the disclosure, the scope of the disclosure should not be limited to the embodiments of  FIGS.  6 A to  6 D . The antenna module structure may be changed within a range permitted by the ordinary technical level in accordance with designer&#39;s needs. 
       FIG.  7 A  is a diagram illustrating a side section of an antenna module including a flexible printed circuit board, a printed circuit board, a first antenna, and a second antenna according to an embodiment of the disclosure. 
     Referring to  FIG.  7 A , an antenna module may include a printed circuit board  701  in which a plurality of layers are laminated. For example, the printed circuit board  701  may be formed through lamination of 18 layers. According to various embodiments, a via hole may be formed on each layer of the printed circuit board  701 . For example, the printed circuit board  701  may include via holes by a laser process and via holes by a plated through-hole (PTH) process. 
     According to an embodiment, a feeding part  711 , to which an electrical signal for radiating radio waves is supplied, may be deployed on one surface of the printed circuit board  701 . For example, the feeding part  711  may be deployed on the first layer that is laminated on an upper end surface of the printed circuit board  701 . According to various embodiments, a via hole may be formed on the first layer by the laser process, and through the via hole, the feeding part  711  may be provided with the electrical signal for radiating the radio waves. 
     According to an embodiment, through the laser process, via holes may be formed even on the second layer and the third layer deployed below (in the lamination direction) the first layer deployed on the upper end surface of the printed circuit board  701 . According to various embodiments, a ground may be deployed on one surface of the third layer. 
     According to an embodiment, an electrical signal for creating a radio frequency may be supplied to the other surface of the printed circuit board  701 . For example, in order to generate the radio frequency, a basic signal for creating the radio frequency, an intermediate frequency signal and a local frequency signal for changing the frequency of the basic signal may be necessary, and the basic signal, the intermediate frequency signal, and the local frequency signal may be supplied to the other surface of the printed circuit board  701 . 
     According to an embodiment, the basic signal may be supplied through “A” deployed on the other surface of the printed circuit board  701 . According to various embodiments, the basic signal being supplied through “A” may be transmitted to the feeding part  711  deployed on one surface of the printed circuit board  701  through the via holes formed on the printed circuit board  701 . 
     According to an embodiment, the intermediate frequency signal may be supplied through “B” deployed on the other surface of the printed circuit board  701 . According to various embodiments, the intermediate frequency signal being supplied through “B” may be transmitted to the printed circuit board  701  through the via holes formed on the printed circuit board  701 . 
     According to an embodiment, the local frequency signal may be supplied through “C” deployed on the other surface of the printed circuit board  701 . According to various embodiments, the local frequency signal being supplied through “C” may be transmitted to the printed circuit board  701  through the via holes formed on the printed circuit board  701 . 
     According to an embodiment, a flexible printed circuit board  721  on which antennas are deployed may be combined with one surface of the printed circuit board  701 . According to various embodiments, on one surface of the flexible printed circuit board  721  facing the feeding part  711 , a first antenna  731  for receiving the electrical signal from the feeding part  711  and radiating radio waves may be deployed. That is, according to the antenna module structure disclosed in the disclosure, the first antenna  731  and the feeding part  711  may have a coupling structure in which they are not directly connected to each other. 
     According to an embodiment, because the feeding part  711  and the first antenna  731  are not directly connected to each other, antennas can be freely deployed in the antenna module. That is, according to the antenna module structure disclosed in the disclosure, the degree of freedom of the antenna module design can be improved. 
     According to an embodiment, a second antenna  741  may be deployed on the other surface of the flexible printed circuit board  721 . According to various embodiments, the performance of the antenna module may be determined based on a separation distance between the first antenna  731  and the second antenna  741 . 
       FIG.  7 B  is a diagram illustrating the structure of an antenna module including a plurality of antennas according to an embodiment of the disclosure. 
     Referring to  FIG.  7 B , an antenna module may include a first antenna  740 , a second antenna  742 , a third antenna  743 , and a fourth antenna  744  that are deployed on an upper end surface of the flexible printed circuit board  722  and a fifth antenna  761 , a sixth antenna  762 , a seventh antenna  763 , and an eighth antenna  764  that are deployed on a side surface of the flexible printed circuit board  722 . According to various embodiments, the antenna module may be deployed in a closed space on the inside of an electronic device. For example, the first antenna  740 , the second antenna  742 , the third antenna  743 , and the fourth antenna  744  deployed on the upper end surface of the flexible printed circuit board  722  may radiate radio waves in a direction of a front or rear surface of the electronic device, and the fifth antenna  761 , the sixth antenna  762 , the seventh antenna  763 , and the eighth antenna  764  deployed on the side surface of the flexible printed circuit board  722  may radiate radio waves toward the side surface of the electronic device. 
     According to an embodiment, if the antenna module is deployed inside the electronic device, the first antenna  740 , the second antenna  742 , the third antenna  743 , and the fourth antenna  744  may be broadside antennas of the electronic device, and the fifth antenna  761 , the sixth antenna  762 , the seventh antenna  763 , and the eighth antenna  764  may be endfire antennas of the electronic device. According to various embodiments, by deploying the broadside antennas and the endfire antennas on one flexible printed circuit board  722  in all, a larger number of antennas can be deployed inside the electronic device, and the antennas can be deployed in various locations inside the electronic device. 
     According to an embodiment, on a lower end surface of the flexible printed circuit board  722 , a printed circuit board  702 , on which a plurality of layers are laminated, may be deployed. According to various embodiments, the lower end surface of the flexible printed circuit board  722  and an upper end surface of the printed circuit board  702  may be spaced apart for a first length from each other. For example, the first length may be determined based on the wavelength of the radio waves to be radiated through the antenna module. 
     According to an embodiment, on the upper end surface of the printed circuit board  702 , a first feeding pad  710  for feeding to the first antenna  740 , a second feeding pad  712  for feeding to the second antenna  742 , a third feeding pad  713  for feeding to the third antenna  743 , and a fourth feeding pad  714  for feeding to the fourth antenna  744  may be deployed. According to various embodiments, each feeding pad may be spaced apart for the first length from each broadside antenna. That is, with respect to the first antenna  740 , the second antenna  742 , the third antenna  743 , and the fourth antenna  744 , feeding may be performed through a coupling method. 
     According to an embodiment, on the side surface of the printed circuit board  702 , a fifth feeding pad  751  for feeding to the fifth antenna  761 , a sixth feeding pad  752  for feeding to the sixth antenna  762 , a seventh feeding pad  753  for feeding to the seventh antenna  763 , and an eighth feeding pad  754  for feeding to the eighth antenna  764  may be deployed. According to various embodiments, each feeding pad may be spaced apart for the first length from each endfire antenna. That is, with respect to the fifth antenna  761 , the sixth antenna  762 , the seventh antenna  763 , and the eighth antenna  764 , feeding may be performed through a coupling method. 
     According to an embodiment, an electrical signal being supplied through the fifth feeding pad  751  deployed on the upper end surface of the printed circuit board  702  may be transmitted to the fifth antenna  761  deployed on the side surface of the printed circuit board  702  through a first feeding line  771 . In the same manner, an electrical signal being supplied through the sixth feeding pad  752  may be transmitted to the sixth antenna  762  through a second feeding line  772 , and an electrical signal being supplied through the seventh feeding pad  753  may be transmitted to the seventh antenna  763  through a third feeding line  773 , and an electrical signal being supplied through the eighth feeding pad  754  may be transmitted to the eighth antenna  764  through a fourth feeding line  774 . 
     On the other hand, because  FIGS.  7 A and  7 B  illustrate embodiments of the disclosure, the scope of the disclosure should not be limited to the embodiments of  FIGS.  7 A and  7 B . The number of endfire antennas deployed on the side surface of the flexible printed circuit board may be changed in accordance with designer&#39;s needs. 
       FIG.  7 C  is a diagram illustrating the structure of an antenna module including a plurality of antennas according to an embodiment of the disclosure. 
     Referring to  FIG.  7 C , an antenna module may include a first antenna  731 , a second antenna  732 , a third antenna  733 , and a fourth antenna  734  that are deployed on an upper end surface of the flexible printed circuit board  723  and a fifth antenna  791 , a sixth antenna  792 , a seventh antenna  793 , an eighth antenna  794 , a ninth antenna  795 , a tenth antenna  796 , an eleventh antenna  797 , and a twelfth antenna  798  that are deployed on a side surface of the flexible printed circuit board  723 . According to various embodiments, the antenna module may be deployed in a closed space on the inside of an electronic device. For example, the first antenna  731 , the second antenna  732 , the third antenna  733 , and the fourth antenna  734  deployed on the upper end surface of the flexible printed circuit board  723  may radiate radio waves in a direction of a front or rear surface of the electronic device, and the fifth antenna  791 , the sixth antenna  792 , the seventh antenna  793 , the eighth antenna  794 , the ninth antenna  795 , the tenth antenna  796 , the eleventh antenna  797 , and the twelfth antenna  798  deployed on the side surface of the flexible printed circuit board  723  may radiate radio waves toward the side surface of the electronic device. 
     According to an embodiment, if the antenna module is deployed inside the electronic device, the first antenna  731 , the second antenna  732 , the third antenna  733 , and the fourth antenna  734  may be broadside antennas of the electronic device, and the fifth antenna  791 , the sixth antenna  792 , the seventh antenna  793 , the eighth antenna  794 , the ninth antenna  795 , the tenth antenna  796 , the eleventh antenna  797 , and the twelfth antenna  798  may be endfire antennas of the electronic device. According to various embodiments, by deploying the broadside antennas and the endfire antennas on one flexible printed circuit board  723  in all, a larger number of antennas can be deployed inside the electronic device, and the antennas can be deployed in various locations inside the electronic device. 
     According to an embodiment, on a lower end surface of the flexible printed circuit board  723 , a printed circuit board (not shown), on which a plurality of layers are laminated, may be deployed. According to various embodiments, the lower end surface of the flexible printed circuit board  723  and an upper end surface of the printed circuit board may be spaced apart for a first length from each other. For example, the first length may be determined based on the wavelength of the radio waves to be radiated through the antenna module. 
     According to an embodiment, electrical signals being supplied through the plurality of feeding pads deployed on the upper end surface of the printed circuit board may be transmitted to the fifth antenna  791  deployed on the side surface of the printed circuit board through the first feeding line  781 . In the same manner, the sixth antenna  792  to the twelfth antenna  798  may be supplied with electrical signals for radiating the radio waves through the second feeding line  782  to the eighth feeding line  788  corresponding to the respective antennas. 
       FIG.  8    is a graph of s parameters of an antenna module according to an embodiment of the disclosure. 
       FIG.  8    shows a graph of s parameters in the case of using an antenna module structure according to the disclosure on the assumption that the frequency band to be radiated is 39 GHz. 
     Referring to  FIG.  8   , according to the antenna module structure according to the disclosure, it can be identified that both vertical polarization and horizontal polarization have high gain values (in case of horizontal polarization, about 15 dB, and in case of vertical polarization, about 20 dB) in 39 GHz frequency band. That is, through the graph of  FIG.  8   , it can be identified that the antenna module structure disclosed in the disclosure can be applied to high frequency bands. 
       FIG.  9 A  is a graph illustrating the deterioration degree of a gain value in accordance with a distance between coupling pads in an antenna module structure according to an embodiment of the disclosure. 
     Referring to  FIG.  9 A , a plurality of antenna arrays may be deployed on one flexible printed circuit board constituting an antenna module. For example, in the 5G mobile communication system using 6 GHz or more frequency band, 256 antenna arrays may be deployed on one flexible printed circuit board. According to various embodiments, in the case where a plurality of antenna arrays are deployed on one flexible printed circuit board, feeding pads may be formed on one surface of the flexible printed circuit board corresponding to the respective antenna arrays and one surface of the printed circuit board facing one surface of the flexible printed circuit board. 
     According to an embodiment, a feeding pad formed on the flexible printed circuit board and a feeding pad formed on the printed circuit board may be spaced apart for a predetermined distance from each other. According to various embodiments, distances between the plurality of feeding pads formed on the flexible printed circuit board and the plurality of feeding pads formed on the printed circuit board may not uniform. For example, due to flexibility of the flexible printed circuit board, the distances between the plurality of feeding pads formed on the flexible printed circuit board and the plurality of feeding pads formed on the printed circuit board may have errors of about 100 μm. 
       FIG.  9 A  is a graph illustrating s parameters in accordance with distance errors between the plurality of feeding pads formed on the flexible printed circuit board and the plurality of feeding pads formed on the printed circuit board. More specifically,  FIG.  9 A  is a graph illustrating the deterioration degree of the gain value in accordance with the frequency in the case where the distance errors between the plurality of feeding pads formed on the flexible printed circuit board and the plurality of feeding pads formed on the printed circuit board are formed in the range of 0 to 100 μm at an interval of 10 μm. 
     According to the graph of  FIG.  9 A , in the case where the distance errors between the plurality of feeding pads formed on the flexible printed circuit board and the plurality of feeding pads formed on the printed circuit board are 100 μm, it can be identified that the gain value deterioration of about 13 dB occurs in comparison with a case of no distance error. 
       FIG.  9 B  is a graph illustrating the deterioration degree of a gain value in accordance with a distance between coupling pads in an antenna module structure including an adhesive layer according to an embodiment of the disclosure. 
     The graph illustrated in  FIG.  9 B  is a graph illustrating s parameters in accordance with distance errors between the plurality of feeding pads and the plurality of feeding pads formed on the printed circuit board in the case where a film layer including an adhesive layer (e.g., double-sided tape) between the plurality of feeding pads formed on the flexible printed circuit board and the plurality of feeding pads formed on the printed circuit board. More specifically, in the same manner as the graph of  FIG.  9 A , the graph of  FIG.  9 B  is a graph illustrating the deterioration degree of the gain value in accordance with the frequency in the case where the distance errors between the plurality of feeding pads formed on the flexible printed circuit board and the plurality of feeding pads formed on the printed circuit board are formed in the range of 0 to 100 μm at an interval of 10 μm. 
     According to an embodiment, permittivity of the film layer applied in a simulation illustrated in the graph of  FIG.  9 B  may be about 2.7. According to the graph of  FIG.  9 B , in the case where the distance errors between the plurality of feeding pads formed on the flexible printed circuit board and the plurality of feeding pads formed on the printed circuit board in a specific frequency (e.g., 32.5 GHz) are 100 μm, it can be identified that the gain value deterioration of about 5 dB occurs in comparison with a case of no distance error. 
     That is, by deploying the film layer having a specific permittivity between the flexible printed circuit board and the printed circuit board through comparison of the graph illustrated in  FIG.  9 A  and the graph illustrated in  FIG.  9 B , it can be identified that the gain value deterioration of the antenna module is reduced. In addition, in the case of combining one surface of the flexible printed circuit board with one surface of the printed circuit board through a double-sided tape, the distances between the plurality of feeding pads formed on the flexible printed circuit board and the plurality of feeding pads formed on the printed circuit board can be minimized. 
       FIG.  9 C  is a graph illustrating the deterioration degree of a gain value in accordance with a distance between coupling pads in an antenna module structure including a first dielectric layer according to an embodiment of the disclosure. 
     The graph illustrated in  FIG.  9 C  is a graph illustrating s parameters in accordance with distance errors between the plurality of feeding pads and the plurality of feeding pads formed on the printed circuit board in the case where a first dielectric layer is deployed between the plurality of feeding pads formed on the flexible printed circuit board and the plurality of feeding pads formed on the printed circuit board. More specifically, in the same manner as the graph of  FIG.  9 A , the graph of  FIG.  9 C  is a graph illustrating the deterioration degree of the gain value in accordance with the frequency in the case where the distance errors between the plurality of feeding pads formed on the flexible printed circuit board and the plurality of feeding pads formed on the printed circuit board are formed in the range of 0 to 100 μm at an interval of 10 μm. 
     According to an embodiment, permittivity of the first dielectric layer applied in a simulation illustrated in the graph of  FIG.  9 C  may be about 5.5. According to the graph of  FIG.  9 C , in the case where the distance errors between the plurality of feeding pads formed on the flexible printed circuit board and the plurality of feeding pads formed on the printed circuit board in a specific frequency (e.g., 32.5 GHz) are 100 μm, it can be identified that the gain value deterioration of about 1.8 dB occurs in comparison with a case of no distance error. 
     That is, by deploying the dielectric layer having a specific permittivity between the flexible printed circuit board and the printed circuit board through comparison of the graph illustrated in  FIG.  9 A  and the graph illustrated in  FIG.  9 C , it can be identified that the gain value deterioration of the antenna module is reduced. 
       FIG.  9 D  is a graph illustrating the deterioration degree of a gain value in accordance with a distance between coupling pads in an antenna module structure including a second dielectric layer according to an embodiment of the disclosure. 
     The graph illustrated in  FIG.  9 D  is a graph illustrating s parameters in accordance with distance errors between the plurality of feeding pads and the plurality of feeding pads formed on the printed circuit board in the case where a second dielectric layer is deployed between the plurality of feeding pads formed on the flexible printed circuit board and the plurality of feeding pads formed on the printed circuit board. More specifically, in the same manner as the graph of  FIG.  9 A , the graph of  FIG.  9 D  is a graph illustrating the deterioration degree of the gain value in accordance with the frequency in the case where the distance errors between the plurality of feeding pads formed on the flexible printed circuit board and the plurality of feeding pads formed on the printed circuit board are formed in the range of 0 to 100 μm at an interval of 10 μm. 
     According to an embodiment, permittivity of the second dielectric layer applied in a simulation illustrated in the graph of  FIG.  9 D  may be about 10. According to the graph of  FIG.  9 D , in the case where the distance errors between the plurality of feeding pads formed on the flexible printed circuit board and the plurality of feeding pads formed on the printed circuit board in a specific frequency (e.g., 32.5 GHz) are 100 μm, it can be identified that the gain value deterioration of about 0.5 dB occurs in comparison with a case of no distance error. 
     That is, by deploying the dielectric layer having a specific permittivity between the flexible printed circuit board and the printed circuit board through comparison of the graph illustrated in  FIG.  9 A  and the graph illustrated in  FIG.  9 D , it can be identified that the gain value deterioration of the antenna module is reduced. Further, through comparison of the graphs disclosed in  FIGS.  9 B to  9 D , it can be identified that the gain value deterioration of the antenna module is reduced as the dielectric material having high permittivity is deployed between the flexible printed circuit board and the printed circuit board. 
       FIG.  10 A  is a diagram illustrating a printed circuit board to which a coupling method is applied according to an embodiment of the disclosure. 
     Referring to  FIG.  10 A , an antenna module may use a capacitive coupling method. According to various embodiments, on one surface of a printed circuit board  1001 , a first feeding pad  1011  and a second feeding pad  1013  for supplying an electrical signal being transmitted from a wireless communication chip (not illustrated) deployed on the other surface of the printed circuit board  1001  may be deployed. 
     According to an embodiment, a flexible printed circuit board on which antennas are deployed may be deployed spaced apart for a predetermined length from one surface of the printed circuit board  1001 . According to various embodiments, in the case where the antenna module uses a capacitive coupling method, it is most preferable to configure a distance between the printed circuit board  1001  and the flexible printed circuit board to 50 μm. 
     According to an embodiment, if the distance between the printed circuit board  1001  and the flexible printed circuit board is 50 μm, an error permission range of the distance between the printed circuit board  1001  and the flexible printed circuit board may be 20 μm. According to various embodiments, the error permission range may be determined within a range in which the degree of deterioration of the gain value of the antenna module is equal to or lower than 6 dB. 
       FIG.  10 B  is a diagram illustrating a printed circuit board to which a coupling method is applied according to an embodiment of the disclosure. 
     Referring to  FIG.  10 B , an antenna module may use a proximity coupling method. According to various embodiments, on one surface of a printed circuit board  1002 , a feeding pad  1012  and a feeding line  1021  for supplying an electrical signal being transmitted from a wireless communication chip (not illustrated) deployed on the other surface of the printed circuit board  1002  may be deployed. 
     According to an embodiment, a flexible printed circuit board on which antennas are deployed may be deployed spaced apart for a predetermined length from one surface of the printed circuit board  1002 . According to various embodiments, in the case where the antenna module uses a proximity coupling method, it is most preferable to configure a distance between the printed circuit board  1002  and the flexible printed circuit board to 50 μm. 
     According to an embodiment, if the distance between the printed circuit board  1002  and the flexible printed circuit board is 50 μm, an error permission range of the distance between the printed circuit board  1002  and the flexible printed circuit board may be 10 μm. According to various embodiments, the error permission range may be determined within a range in which the degree of deterioration of the gain value of the antenna module is equal to or lower than 6 dB. 
       FIG.  10 C  is a diagram illustrating a printed circuit board to which a coupling method is applied according to an embodiment of the disclosure. 
     Referring to  FIG.  10 C , an antenna module may use an aperture coupling method (e.g., resonance coupling method). According to various embodiments, on an inside of a printed circuit board  1003 , a feeding pad  1014  and a feeding line  1022  for supplying an electrical signal being transmitted from a wireless communication chip (not illustrated) deployed on the other surface of the printed circuit board  1003  may be deployed. According to various embodiments, an opening  1031  for passing an electrical signal being supplied from the feeding line  1022  therethrough may be formed on one surface of the printed circuit board  1003 . 
     According to an embodiment, a flexible printed circuit board on which antennas are deployed may be deployed spaced apart for a predetermined length from one surface of the printed circuit board  1003 . According to various embodiments, in the case where the antenna module uses the aperture coupling method, it is most preferable to configure a distance between the printed circuit board  1003  and the flexible printed circuit board to 130 μm. 
     According to an embodiment, if the distance between the printed circuit board  1003  and the flexible printed circuit board is 130 μm, an error permission range of the distance between the printed circuit board  1003  and the flexible printed circuit board may be 60 μm. According to various embodiments, the error permission range may be determined within a range in which the degree of deterioration of the gain value of the antenna module is equal to or lower than 6 dB. 
     Referring to  FIGS.  10 A to  10 C , it can be identified that the distance between the pads for coupling (e.g., distance between the pad formed on the flexible printed circuit board on which antennas are deployed and the pad formed on the printed circuit board on which the wireless communication chip is deployed) in the antenna module structure according to the disclosure is determined based on the coupling method or the frequency (or wavelength) of radio waves to be radiated through an antenna. 
       FIG.  11    is a diagram explaining a beamforming operation being performed in an antenna module structure according to an embodiment of the disclosure. 
     Referring to  FIG.  11   , an antenna module may include a first antenna  1101  forming a first radiation region in a first direction, a second antenna  1103  forming a second radiation region in a second direction, a wireless communication chip  1111  configured to supply a radio frequency signal to the first antenna  1101  and the second antenna  1103 , and a modem  1121  configured to transmit a baseband signal for creating the radio frequency to the wireless communication chip  1111 . 
     According to an embodiment, the modem  1121  may transmit a control signal for beamforming to the wireless communication chip  1111 . According to various embodiments, the wireless communication chip  1111  may transmit the radio frequency signal having a specific phase to the first antenna  1101  and the second antenna  1103  based on the control signal. 
     According to an embodiment, the wireless communication chip  1111  may include a first phase shifter  1113  corresponding to the first antenna  1101  and a second phase shifter  1115  corresponding to the second antenna  1103 . According to various embodiments, the wireless communication chip  1111  may control the first phase shifter  1113  to control the first antenna  1101  to perform beamforming in the first direction based on the control signal. For example, if the modem  1121  transmits a first digital signal of a specific bit to the wireless communication chip  1111 , the wireless communication chip  1111  having received the first digital signal may adjust the phase of the first phase shifter  1113  so that the first antenna  1101  forms a beam at a specific angle (e.g., 50°). 
     According to an embodiment, the wireless communication chip  1111  may control the second phase shifter  1115  to control the second antenna  1103  to perform beamforming in the second direction based on the control signal. For example, if the modem  1121  transmits a second digital signal of a specific bit to the wireless communication chip  1111 , the wireless communication chip  1111  having received the second digital signal may adjust the phase of the second phase shifter  1115  so that the second antenna  1103  forms a beam at a specific angle (e.g., 70°). 
     According to an embodiment, the wireless communication chip  1111  may include a mixer  1117  configured to generate radio frequency components based on a local frequency signal and an intermediate frequency signal. According to various embodiments, the wireless communication chip  1111  may include an analog-to-digital converter (ADC) for converting an analog signal received from the first antenna  1101  or the second antenna  1103  into a digital signal or a digital-to-analog converter (DAC) for converting a digital signal received from the modem  1121  into an analog signal. 
       FIG.  12    is a diagram illustrating the structure of an antenna module including a wireless communication chip and a modem according to an embodiment of the disclosure. 
     Referring to  FIG.  12   , an antenna module may include a flexible printed circuit board  1201  including a first surface directed in a first direction and a second surface directed in a second direction that forms a predetermined first angle with respect to the first direction, a first antenna  1211  deployed on one surface of the first surface and configured to form a first radiation region in a third direction, a second antenna  1221  deployed on one surface of the second surface and configured to form a second radiation region in a fourth direction, a wireless communication chip  1231  deployed on the other surface of the flexible printed circuit board  1201  and configured to supply a radio frequency signal to the first antenna  1211  and the second antenna  1221 , and a modem  1241  configured to transmit a baseband signal for creating a radio frequency to the wireless communication chip  1231 . 
     According to an embodiment, the modem  1241  may transmit a control signal for beamforming to the wireless communication chip  1231 . According to various embodiments, the wireless communication chip  1231  may transmit a radio frequency signal having a specific phase to the first antenna  1211  and the second antenna  1221  based on the control signal. 
     According to an embodiment, the wireless communication chip  1231  may include a first phase shifter corresponding to the first antenna  1211  and a second phase shifter corresponding to the second antenna  1221 . According to various embodiments, the wireless communication chip  1231  may control the first phase shifter based on the control signal so that the first antenna  1211  performs beamforming in the third direction. For example, if the modem  1241  transmits a first digital signal of a specific bit to the wireless communication chip  1231 , the wireless communication chip  1231  having received the first digital signal may adjust the phase of the first phase shifter so that the first antenna  1211  forms beams at a specific angle (e.g., 50°). 
     According to an embodiment, the wireless communication chip  1231  may control the second phase shifter based on the control signal so that the second antenna  1221  performs beamforming in the fourth direction. For example, if the modem  1241  transmits a second digital signal of a specific bit to the wireless communication chip  1231 , the wireless communication chip  1231  having received the second digital signal may adjust the phase of the second phase shifter so that the second antenna  1221  forms beams at a specific angle (e.g., 70°). 
     According to an embodiment, the wireless communication chip  1231  may include a mixer configured to generate radio frequency components based on a local frequency signal and an intermediate frequency signal. According to various embodiments, the wireless communication chip  1231  may include an analog-to-digital converter (ADC) for converting an analog signal received from the first antenna  1211  or the second antenna  1221  into a digital signal or a digital-to-analog converter (DAC) for converting a digital signal received from the modem  1241  into an analog signal. 
     According to an embodiment, an antenna module may include a flexible printed circuit board (FPCB) including a first surface directed in a first direction and a second surface directed in a second direction that forms a predetermined first angle with respect to the first direction, a first antenna deployed on one surface of the first surface and configured to form a first radiation region in a third direction, and a second antenna deployed on one surface of the second surface and configured to form a second radiation region in a fourth direction. 
     According to an embodiment, at least a partial region of the first radiation region and at least a partial region of the second radiation region may not overlap each other. 
     According to an embodiment, the antenna module may further include a controller electrically connected to the first antenna and the second antenna and configured to control radiation directions of radio waves being radiated through the first antenna and the second antenna, wherein the controller is configured to control the first antenna to perform beamforming with respect to the first radiation region and to control the second antenna to perform beamforming with respect to the second radiation region. 
     According to an embodiment, the antenna module may further includes a first feeding pad deployed on the other surface of the first surface, a first feeding line configured to electrically connect the first feeding pad and the first antenna to each other in the flexible printed circuit board, a second feeding pad deployed on the other surface of the first surface, and a second feeding line configured to electrically connect the second feeding pad and the second antenna to each other in the flexible printed circuit board. 
     According to an embodiment, the antenna module may further include a printed circuit board having one surface deployed spaced apart for a predetermined first length from the other surface of the first surface and at least one layer laminated therein, a third feeding pad deployed on the one surface of the printed circuit board corresponding to the first feeding pad, and a fourth feeding pad deployed on the one surface of the printed circuit board corresponding to the second feeding pad. 
     According to an embodiment, the first length may be determined based on a wavelength of radio waves being radiated through the first antenna or the second antenna. 
     According to an embodiment, the first length may be equal to or larger than 5 μm and is equal to or smaller than 500 μm. 
     According to an embodiment, the antenna module may further include a wireless communication chip deployed on the other surface of the printed circuit board, a third feeding line configured to electrically connect the wireless communication chip and the third feeding pad to each other in the printed circuit board, and a fourth feeding line configured to electrically connect the wireless communication chip and the fourth feeding pad to each other in the printed circuit board. 
     According to an embodiment, the antenna module may further include a film layer deployed between the other surface of the first surface of the flexible printed circuit board and the one surface of the printed circuit board and configured to uniformly maintain a distance between the other surface of the first surface of the flexible printed circuit board and the one surface of the printed circuit board. 
     According to an embodiment, the film layer may further include an adhesive layer configured to make the other surface of the first surface of the flexible printed circuit board and the one surface of the printed circuit board adhere to each other. 
     According to an embodiment, the antenna module may further include a wireless communication chip having one surface deployed spaced apart for a predetermined second length from the other surface of the first surface, a third feeding pad deployed on one surface of the wireless communication chip corresponding to the first feeding pad, and a fourth feeding pad deployed on the one surface of the wireless communication chip corresponding to the second feeding pad. 
     According to the antenna module according to an embodiment, the flexible printed circuit board may include a first layer deployed on an upper end surface thereof and a second layer deployed under the first layer, and the first antenna may be deployed on the one surface of the first surface directed in the first direction on the first layer, the second antenna may be deployed on the one surface of the second surface directed in the second direction on the first layer, and a third antenna may be deployed on a one surface of a first surface directed in the first direction on the second layer. 
     According to an embodiment, the antenna module may further include a third antenna deployed on one surface of a third surface of the flexible printed circuit board directed in a third direction, wherein the third direction and the first direction form a predetermined second angle, and the third direction and the second direction form a predetermined third angle. 
     According to an embodiment, the first antenna or the second antenna may include at least one of a patch antenna, a monopole antenna, a spiral antenna, a wave antenna, a yagiuda antenna, a loop antenna, a Vivaldi antenna, or a holographic antenna. 
     According to an embodiment, an electronic device may include a front member directed in a first direction, a rear member directed in a second direction that is opposite to the first direction, a side member surrounding a space between the front member and the rear member, and an antenna module deployed in a closed space formed by the front member, the rear member, and the side member, wherein the antenna module may include a flexible printed circuit board (FPCB) including a first surface facing the front member and a second surface facing the side member, a first antenna deployed on one surface of the first surface and configured to form a first radiation region in a third direction, and a second antenna deployed on one surface of the second surface and configured to form a second radiation region in a fourth direction. 
     According to an embodiment, at least a partial region of the first radiation region and at least a partial region of the second radiation region may not overlap each other. 
     According to an embodiment, the antenna module may further include a controller electrically connected to the first antenna and the second antenna and configured to control radiation directions of radio waves being radiated through the first antenna and the second antenna, wherein the controller may be configured to control the first antenna to perform beamforming with respect to the first radiation region and to control the second antenna to perform beamforming with respect to the second radiation region. 
     According to an embodiment, the first radiation region may be a radiation region that is formed if radio waves are radiated through the front member or the rear member, and the second radiation region may be a radiation region that is formed if the radio waves are radiated through the side member. 
     According to an embodiment the antenna module may further include a first feeding pad deployed on the other surface of the first surface, a first feeding line configured to electrically connect the first feeding pad and the first antenna to each other in the flexible printed circuit board, a second feeding pad deployed on the other surface of the first surface, and a second feeding line configured to electrically connect the second feeding pad and the second antenna to each other in the flexible printed circuit board. 
     According to an embodiment, the antenna module may further include a printed circuit board having one surface deployed spaced apart for a predetermined first length from the other surface of the first surface and at least one layer laminated therein, a third feeding pad deployed on the one surface of the printed circuit board corresponding to the first feeding pad, and a fourth feeding pad deployed on the one surface of the printed circuit board corresponding to the second feeding pad. 
     According to an embodiment, the first length may be determined based on a wavelength of radio waves being radiated through the first antenna or the second antenna. 
     According to an embodiment, the first length may be equal to or larger than 5 μm and is equal to or smaller than 500 μm. 
     According to an embodiment, the antenna module may further include a wireless communication chip deployed on the other surface of the printed circuit board, a third feeding line configured to electrically connect the wireless communication chip and the third feeding pad to each other in the printed circuit board, and a fourth feeding line configured to electrically connect the wireless communication chip and the fourth feeding pad to each other in the printed circuit board. 
     According to an embodiment, the antenna module may further include a film layer deployed between the other surface of the first surface of the flexible printed circuit board and the one surface of the printed circuit board and configured to uniformly maintain a distance between the other surface of the first surface of the flexible printed circuit board and the one surface of the printed circuit board. 
     According to an embodiment, the film layer may further include an adhesive layer configured to make the other surface of the first surface of the flexible printed circuit board and the one surface of the printed circuit board adhere to each other. 
     According to an embodiment, the antenna module may further include a wireless communication chip having one surface deployed spaced apart for a predetermined second length from the other surface of the first surface, a third feeding pad deployed on one surface of the wireless communication chip corresponding to the first feeding pad, and a fourth feeding pad deployed on the one surface of the wireless communication chip corresponding to the second feeding pad. 
     According to an embodiment, the flexible printed circuit board may include a first layer deployed on an upper end surface thereof and a second layer deployed under the first layer, and the first antenna may be deployed on the one surface of the first surface directed in the first direction on the first layer, the second antenna may be deployed on the one surface of the second surface directed in the second direction on the first layer, and a third antenna may be deployed on a one surface of a first surface directed in the first direction on the second layer. 
     According to an embodiment, the antenna module may further include a third antenna deployed on one surface of a third surface of the flexible printed circuit board formed in a third direction, and the third direction and the first direction may form a predetermined second angle, and the third direction and the second direction may form a predetermined third angle. 
     According to an embodiment, the first antenna may include a broadside antenna array, and the second antenna includes an endfire antenna array. 
     According to an embodiment, the first antenna or the second antenna may include at least one of a patch antenna, a monopole antenna, a spiral antenna, a wave antenna, a yagiuda antenna, a loop antenna, a Vivaldi antenna, or a holographic antenna. 
     According to an embodiment, an antenna module may include a flexible printed circuit board (FPCB) including a first surface directed in a first direction and a second surface directed in a second direction that forms a predetermined first angle with respect to the first direction, a first antenna deployed on one surface of the first surface and configured to form a first radiation region in a third direction, a second antenna deployed on one surface of the second surface and configured to form a second radiation region in a fourth direction, a wireless communication chip deployed on the other surface of the flexible printed circuit board and configured to supply a radio frequency signal to the first antenna and the second antenna, and a modem configured to transmit a baseband signal to the wireless communication chip, wherein the modem may be configured to transmit a control signal for beamforming to the wireless communication chip, and the wireless communication chip may be configured to transmit a radio frequency signal to the first antenna and the second antenna based on the control signal. 
     According to an embodiment, the wireless communication chip may include a first phase shifter corresponding to the first antenna and a second phase shifter corresponding to the second antenna, the wireless communication chip may be configured to control the first phase shifter based on the control signal so that the first antenna performs beamforming in the third direction, and the wireless communication chip may be configured to control the second phase shifter based on the control signal so that the second antenna performs beamforming in the fourth direction. 
     According to an embodiment, the modem may be configured to transmit, to the first phase shifter, a first control signal for the first antenna to perform beamforming in the third direction, and the modem may be configured to transmit, to the second phase shifter, a second control signal for the second antenna to perform beamforming in the fourth direction. 
     According to an embodiment, the wireless communication chip may include a mixer configured to generate radio frequency components based on a local frequency signal and an intermediate frequency signal. 
     According to an embodiment, at least a partial region of the first radiation region and at least a partial region of the second radiation region may not overlap each other. 
     According to an embodiment, the antenna module may further include a first feeding pad deployed on the other surface of the first surface, a first feeding line configured to electrically connect the first feeding pad and the first antenna to each other in the flexible printed circuit board, a second feeding pad deployed on the other surface of the first surface, and a second feeding line configured to electrically connect the second feeding pad and the second antenna to each other in the flexible printed circuit board. 
     According to an embodiment, the antenna module may further include a printed circuit board having one surface deployed spaced apart for a predetermined first length from the other surface of the first surface and at least one layer laminated therein, a third feeding pad deployed on the one surface of the printed circuit board corresponding to the first feeding pad, and a fourth feeding pad deployed on the one surface of the printed circuit board corresponding to the second feeding pad. 
     According to an embodiment, the first length may be determined based on a wavelength of radio waves being radiated through the first antenna or the second antenna. 
     According to an embodiment, the first length may be equal to or larger than 5 μm and is equal to or smaller than 500 μm. 
     According to an embodiment, the wireless communication chip may be deployed on the other surface of the printed circuit board, and the antenna module may further include a third feeding line configured to electrically connect the wireless communication chip and the third feeding pad to each other in the printed circuit board, and a fourth feeding line configured to electrically connect the wireless communication chip and the fourth feeding pad to each other in the printed circuit board. 
     According to an embodiment, the antenna module may further include a film layer deployed between the other surface of the first surface of the flexible printed circuit board and the one surface of the printed circuit board and configured to uniformly maintain a distance between the other surface of the first surface of the flexible printed circuit board and the one surface of the printed circuit board. 
     According to an embodiment, the film layer may further include an adhesive layer configured to make the other surface of the first surface of the flexible printed circuit board and the one surface of the printed circuit board adhere to each other. 
     According to an embodiment, the wireless communication chip may have one surface deployed spaced apart for a predetermined second length from the other surface of the first surface, and the antenna module may further include a third feeding pad deployed on one surface of the wireless communication chip corresponding to the first feeding pad, and a fourth feeding pad deployed on the one surface of the wireless communication chip corresponding to the second feeding pad. 
     According to an embodiment, the flexible printed circuit board may include a first layer deployed on an upper end surface thereof and a second layer deployed under the first layer, and the first antenna may be deployed on the one surface of the first surface directed in the first direction on the first layer, the second antenna may be deployed on the one surface of the second surface directed in the second direction on the first layer, and a third antenna may be deployed on a one surface of a first surface directed in the first direction on the second layer. 
     According to an embodiment, the antenna module may further include a third antenna deployed on one surface of a third surface of the flexible printed circuit board directed in a third direction, wherein the third direction and the first direction may form a predetermined second angle, and the third direction and the second direction may form a predetermined third angle. 
     According to an embodiment, the first antenna or the second antenna may include at least one of a patch antenna, a monopole antenna, a spiral antenna, a wave antenna, a yagiuda antenna, a loop antenna, a Vivaldi antenna, or a holographic antenna. 
     According to the embodiment of the disclosure, the antennas can be efficiently deployed in diverse locations within the electronic device, and thus the gain value and the coverage of radio waves can be improved. 
     According to the embodiment of the disclosure, an antenna module of a wireless communication system, the antenna module may comprise: a first printed circuit board including a first surface directed in a first direction and a second surface directed in a second direction; an antenna deployed on a first area of the first surface of the first printed circuit board and configured to form a first radiation region; a second printed circuit board including a first surface deployed spaced apart for a predetermined length from the second surface of the first printed circuit board; a first feeding pad deployed on a first area of the second surface of the first printed circuit board; a first feeding line configured to electrically connect the first feeding pad and the first antenna to each other in the first printed circuit board; a second feeding pad deployed on the first surface of the second printed circuit board corresponding to the first feeding pad; a wireless communication chip deployed on a second surface of the second printed circuit board; and a second feeding line configured to electrically connect the wireless communication chip and the second feeding pad to each other in the second printed circuit board; wherein the first printed circuit board may be a flexible printed circuit board (FPCB). 
     According to the embodiment of the disclosure, the first length may be determined based on a wavelength of radio waves being radiated through at least one of the first antenna or the second antenna. 
     In addition, according to the embodiment of the disclosure, the feeding pads of the printed circuit board and the antennas are not directly connected to each other, and thus the degree of freedom of the antenna deployment design within the electronic device can be improved. 
     While the disclosure has been shown and described with reference to various embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents.