Patent Publication Number: US-10784562-B2

Title: Wireless communication chip having internal antenna, internal antenna for wireless communication chip, and method of fabricating wireless communication chip having internal antenna

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     Pursuant to 35 U.S.C. § 119(a), this application claims the benefit of earlier filing date and right of priority to Korean Patent Application No. 10-2017-0090274, filed on Jul. 17, 2017, the disclosure of which is incorporated herein by reference in its entirety. 
     BACKGROUND 
     1. Field of the Invention 
     The present invention relates to a communication module, and more particularly, to an antenna for a communication module. 
     2. Discussion of Related Art 
     Various electronic devices capable of performing communication functions include therein wireless communication chips, such as Bluetooth, WiFi, or a global positional system (GPS), and antennas combined with the wireless communication chips and configured to transmit communication data to the outside or receive the communication data from the outside, to perform the communication functions. 
     In an example, as shown in  FIG. 1 , in a typical electronic device  100 , a wireless communication chip  120  and an antenna  130  configured to transmit and receive communication data may be mounted on a motherboard  110 , and the wireless communication chip  120  and the antenna  130  may be electrically connected to each other through a radio-frequency (RF) cable  140 . 
     However, as shown in  FIG. 1 , in the typical electronic device  100 , since the wireless communication chip  120  and the antenna  130  are mounted as separate components, the RF cable  140  configured to connect the wireless communication chip  120  and the antenna  130  is necessarily required. Therefore, manufacturing costs increase, and it is difficult to miniaturize the electronic device  100 . 
     In addition, since the antenna  130  is directly mounted on the motherboard  110 , a resonance frequency of the antenna  130  may be changed according to a shape or size of the motherboard  110 . 
     PRIOR-ART DOCUMENTS 
     Patent Documents 
     Korean Patent Publication No. 10-2010-0131656, published on Dec. 16, 2010 and entitled “Internal Antenna Module, Method of Fabricating the Module, and Wireless Communication Terminal Including the Module” 
     SUMMARY OF THE INVENTION 
     The present invention is directed to providing a wireless communication chip having an internal antenna, in which an antenna is not designed on a motherboard of an electronic device but designed to be embedded in a communication module, an internal antenna for a wireless communication chip, and a method of fabricating a wireless communication chip having an internal antenna. 
     In addition, the present invention is directed to providing a wireless communication chip having an internal antenna, in which a resonance frequency is variable, an internal antenna for a wireless communication chip, and a method of fabricating a wireless communication chip having an internal antenna. 
     According to an aspect of the present invention, there is provided a wireless communication chip having an internal antenna, the wireless communication chip including: a substrate including a first mounting region and a second mounting region; a wireless communication module molded on the first mounting region; and an antenna block mounted on the second mounting region to be electrically connected to the wireless communication module. The antenna block includes a first antenna formed on the substrate; a connection element connected to the first antenna; an insulating layer formed on the first antenna and the connection element to cover the first antenna and the connection element; and a second antenna formed on the insulating layer such that a first surface of the second antenna is in contact with the insulating layer, and a second surface of the second antenna, which is a reverse surface of the first surface, is exposed to the outside of the wireless communication chip. The second antenna is electrically connected to the first antenna through the connection element. 
     The first antenna may include a radiator pattern; a feeding pin formed to extend from one end of the radiator pattern in a second direction, which is different from a first direction that is a lengthwise direction of the radiator pattern, wherein the feeding pin is configured to supply a feeding signal supplied from the wireless communication module to the radiator pattern; and a first ground unit configured to ground the radiator pattern. In an exemplary embodiment, the radiator pattern may be formed as a meander line pattern. 
     In an exemplary embodiment, a distance between the feeding pin and the first ground unit may range from 0.02λ to 0.03λ. 
     The first ground unit may include a branch unit branched from the feeding pin to the first direction; and a ground pin extending from one end of the branch unit in the second direction. 
     In an exemplary embodiment, the connection element may be connected to another end of the radiator pattern, and the first antenna may further include a second ground unit, which may extend from the connection element in the second direction to ground the connection element. The connection element may be a lumped element. 
     The wireless communication module and the insulating layer may be formed to have the same height. 
     Meanwhile, the connection element may be formed to have a predetermined height from a surface of the substrate, the first antenna may be electrically connected to a bottom surface of a first terminal of the connection element, and the second antenna may be electrically connected to a top surface of the first terminal of the connection element. 
     In this case, the second antenna may include a compression groove configured to electrically connect the second antenna to the top surface of the first terminal of the connection element. 
     According to another aspect of the present invention, there is provided an internal antenna for a wireless communication chip, the internal antenna including: a first antenna formed on a substrate; a connection element connected to the first antenna; an insulating layer formed on the first antenna and the connection element to cover the first antenna and the connection element; and a second antenna formed on the insulating layer such that a first surface of the second antenna is in contact with the insulating layer, and a second surface of the second antenna, which is a reverse surface of the first surface, is exposed to the outside. The second antenna may be electrically connected to the first antenna through the connection element. 
     According to still another aspect of the present invention, there is provided an electronic device including: a first substrate; a first antenna formed on the first substrate; and a wireless communication chip mounted on the first substrate and electrically connected to the first antenna. The wireless communication chip includes a second substrate including a first mounting region and a second mounting region; a wireless communication module molded on the first mounting region; and an antenna block mounted on the second mounting region to be electrically connected to the wireless communication module and the first antenna. The antenna block includes a connection element formed on the second mounting region of the second substrate and electrically connected to the first antenna; an insulating layer formed on the connection element to cover the connection element; and a second antenna electrically connected to the first antenna through the connection element and formed on the insulating layer such that a first surface of the second antenna is in contact with the insulating layer and a second surface of the second antenna, which is a reverse surface of the first surface, is exposed to the outside of the wireless communication chip. 
     In an exemplary embodiment, the first antenna may have an internal antenna, which may further include a radiator pattern; a feeding pin configured to extend from one end of the radiator pattern in a second direction and supply a feeding signal supplied from the wireless communication module to the radiator pattern, wherein the second direction is different from a first direction, which is a lengthwise direction of the radiator pattern; and a first ground unit configured to connect the radiator pattern to a ground line formed on the first substrate. 
     In this case, a first via hole may be formed in a region of the second substrate corresponding to another end of the radiator pattern and filled with a first conductor configured to electrically connect the other end of the radiator pattern to the connection element. 
     Meanwhile, a second via hole may be formed in a region of the second substrate corresponding to the feeding pin and filled with a second conductor configured to electrically connect the wireless communication module to the feeding pin. 
     According to yet another aspect of the present invention, there is provided a method of fabricating a wireless communication chip having an internal antenna, the method including: forming a chip constituting a wireless communication module and a circuit interconnection in a first mounting region of a substrate; forming a first antenna and a connection element in a second mounting region of the substrate; forming insulating layers and on an entire surface of the substrate; forming a second antenna on the insulating layer formed on the second mounting region; and electrically connecting the second antenna to the first antenna. 
     In this case, the electrically connecting of the second antenna to the first antenna may include compressing at least a portion of the second antenna to form a compression groove, such that the second antenna is connected to the connection element by passing through the insulating layer. 
     According to yet another aspect of the present invention, there is provided a method of fabricating an electronic device, the method including: forming a chip constituting a wireless communication module and a circuit interconnection on a first mounting region of a daughterboard; forming a connection element on a second mounting region of the daughterboard; forming insulating layers and on an entire surface of the daughterboard; forming a second antenna on the insulating layer formed on the second mounting region; electrically connecting the second antenna to the connection element to fabricate a wireless communication chip; and mounting the wireless communication chip on a motherboard on which a first antenna is formed, to electrically connect the wireless communication chip to the first antenna. 
     In this case, the method may further include forming a first via hole and a second via hole in the second mounting region of the daughterboard. The mounting of the wireless communication chip on the motherboard may include filling the first via hole with a first conductor to electrically connect the first antenna to the wireless communication module and filling the second via hole with a second conductor to electrically connect the first antenna to the connection element. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other objects, features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail exemplary embodiments thereof with reference to the accompanying drawings, in which: 
         FIG. 1  is a schematic diagram of a configuration of a typical electronic device on which a wireless communication chip and an antenna are mounted as separate components; 
         FIG. 2A  is a perspective view of a wireless communication chip according to a first exemplary embodiment of the present invention; 
         FIG. 2B  is a partial exploded perspective view of the wireless communication chip according to the first exemplary embodiment of the present invention; 
         FIG. 3  is a side view of the wireless communication chip according to the first exemplary embodiment of the present invention; 
         FIG. 4  is diagrams showing sizes of a first mounting region and a second mounting region according to an exemplary embodiment of the present invention; 
         FIGS. 5A and 5B  are a diagram showing a current distribution of a wireless communication chip according to an exemplary embodiment of the present invention; 
         FIG. 6  is a partial exploded perspective view of a wireless communication chip according to a second exemplary embodiment of the present invention; 
         FIG. 7A  is a perspective view of an electronic device including a wireless communication chip according to a third exemplary embodiment of the present invention; 
         FIG. 7B  is a partial exploded perspective view of the electronic device including the wireless communication chip according to the third exemplary embodiment of the present invention; 
         FIG. 8  is a side view of the electronic device including the wireless communication chip according to the third exemplary embodiment of the present invention; 
         FIG. 9A  is a diagram of an example in which a wireless communication chip according to the present invention is mounted on the center of one side of a motherboard; 
         FIG. 9B  is a diagram of a radiation pattern obtained in the example of  FIG. 9A ; 
         FIG. 10A  is a diagram of an example in which a wireless communication chip according to the present invention is mounted on a corner of a motherboard; 
         FIG. 10B  is a diagram of a radiation pattern obtained in the example of  FIG. 10A ; 
         FIG. 11  is a flowchart of methods of fabricating the wireless communication chips according to the first and second exemplary embodiments of the present invention; and 
         FIG. 12  is a flowchart of a method of fabricating the electronic device including the wireless communication chip according to the third exemplary embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     The meanings of terms described herein should be understood as follows. 
     The singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. Terms, such as “first,” “second,” and the like, may be used to distinguish one element or component from another element or component, and such elements or components should not be limited by these terms. 
     It will be further understood that the terms “comprises,” “comprising,” “includes” and/or “including,” when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
     The term “at least one of” includes any and all combinations of one or more of the associated listed items. For example, “at least one of a first item, a second item, and a third item” means not only the first item, the second item, or the third item each, but also any and all combinations of at least two of the first item, the second item, and the third item. 
     Embodiment 1 
     Hereinafter, a first exemplary embodiment of the present invention will be described in detail with reference to  FIGS. 2A to 5B .  FIG. 2A  is a perspective view of a wireless communication chip according to a first exemplary embodiment of the present invention.  FIG. 2B  is a partial exploded perspective view of the wireless communication chip according to the first exemplary embodiment of the present invention.  FIG. 3  is a side view of the wireless communication chip according to the first exemplary embodiment of the present invention.  FIG. 4  is diagrams showing sizes of a first mounting region and a second mounting region according to an exemplary embodiment of the present invention.  FIGS. 5A and 5B  are a diagram showing a current distribution of a wireless communication chip according to an exemplary embodiment of the present invention; 
     As shown in  FIGS. 2A, 2B, and 3 , a wireless communication chip  200  according to the first exemplary embodiment of the present invention may be mounted on a motherboard (not shown) of an electronic device to implement a communication function of the electronic device. 
     In an exemplary embodiment, the wireless communication chip  200  according to the present invention may be a near-field communication chip, such as Bluetooth, WiFi, Beacon, or NFC, which may enable near-field communications. However, the present invention is not limited thereto, and the wireless communication chip  200  according to the present invention may be a communication chip, such as 3G, 4G, or 5G, which may enable wireless communications. 
     As shown in  FIGS. 2A and 2B , the wireless communication chip  200  according to the present invention may include a substrate  210 , a wireless communication module  220 , and an antenna block  230 . 
     The wireless communication module  220  and the antenna block  230  may be mounted on the substrate  210 . In an exemplary embodiment, the substrate  210  may be a printed circuit board (PCB). As shown in  FIGS. 2A and 2B , the substrate  210  according to the present invention may include a first mounting region  212  on which the wireless communication module  220  is mounted and a second mounting region  214  on which the antenna block  230  is mounted. In this case, the first mounting region  212  and the second mounting region  214  may be formed to have smaller lengths in a first direction D 1  than in a second direction D 2 . 
     In an exemplary embodiment, the first mounting region  212  may be formed to have a larger area than that of the second mounting region  214 . For example, as shown in  FIG. 4 , when a first side a of the substrate  210  has a length of 6.5 mm and a second side b of the substrate  210  has a length of 6.5 mm, the first mounting region  212  on which the wireless communication module  220  is mounted may have a first side a-c with a size of 5.0 mm and a second side b with a size of 6.5 mm, and the second mounting region  214  on which the antenna block  230  is mounted may have a first side c with a size of 1.5 mm and a second side b with a size of 6.5 mm. 
     The wireless communication module  220  may be molded on the first mounting region  212  of the substrate  210 . In an exemplary embodiment, the wireless communication module  220  may be a near-field communication module, such as Bluetooth, WiFi, Beacon, or NFC, or a communication module, such as 3G, 4G, or 5G. 
     The wireless communication module  220  may include a circuit interconnection (not shown) patterned on the first mounting region  212  of the substrate  210 , a baseband chip/RF chip  222  mounted on the first mounting region  212  of the substrate  210  to be electrically connected to the circuit interconnection to implement a communication function, and an insulating layer  224  configured to cover the baseband chip/RF chip  222 . 
     The antenna block  230  may be electrically connected to the wireless communication module  220  and transmit communication data supplied from the wireless communication module  220  to the outside or receive communication data received from the outside. The antenna block  230  may radiate communication data to the outside or receive communication data received from the outside, by using an electric signal (e.g., current) that is fed from the wireless communication module  220 . 
     In an exemplary embodiment, as shown in  FIGS. 2A, 2B, and 3 , the antenna block  230  according to the present invention may include a first antenna  240 , a connection element  250 , an insulating layer  260 , and a second antenna  270 . 
     The first antenna  240  may be formed on the substrate  210  to be electrically connected to the wireless communication module  220 . The first antenna  240  may be patterned and formed on the substrate  210 . In an exemplary embodiment, the first antenna  240  may be patterned along with the circuit interconnection designed on the first mounting region  212 . 
     As shown in  FIGS. 2A, 2B, and 3 , the first antenna  240  according to the present invention may include a radiator pattern  310 , a feeding pin  320 , and a first ground unit  330 . 
     The radiator pattern  310  may be formed on the second mounting region  214  of the substrate  210  to have a predetermined length. In this case, a length of the radiator pattern  310  may be determined according to a desired resonance frequency band. The radiator pattern  310  may be bent at least once to implement a desired resonance frequency band. That is, the radiator pattern  310  according to the present invention may be formed as a meander line pattern. 
     In an exemplary embodiment, the radiator pattern  310  may be formed on the second mounting region  214  of the substrate  210  and extend in the first direction D 1 . 
     The feeding pin  320  may supply an electric signal supplied from the wireless communication module  220  to the radiator pattern  310 . In an exemplary embodiment, the feeding pin  320  may be formed to extend from one end  312  of the radiator pattern  310  in the second direction D 2 . 
     The first ground unit  330  may ground the radiator pattern  310 . To ground the radiator pattern  310 , the first ground unit  330  may electrically connect the radiator pattern  310  to a ground unit (not shown) included in the wireless communication module  220 . 
     In an exemplary embodiment, the first ground unit  330  may be branched from the feeding pin  320 . According to this exemplary embodiment, as shown in  FIGS. 2A and 2B , the first ground unit  330  may include a branch unit  332  and a ground pin  334 . 
     The branch unit  332  may be formed to extend from the feeding pin  320  in the first direction D 1 . The ground pin  334  may be formed to extend from one end of the branch unit  332  in the second direction D 2 . The ground pin  334  may be electrically connected to the ground unit included in the wireless communication module  220 . That is, one end of the ground pin  334  may be connected to the branch unit  332 , while another end of the ground pin  334  may be electrically connected to the ground unit included in the wireless communication module  220 . 
     In the above-described embodiment, a length of the branch unit  332  may be set as such a value that a current distribution concentrates in the branch unit  332  and the ground pin  334 . For example, the length of the branch unit  332  may be set to be 0.02λ to 0.03λ. Thus, the feeding pin  320  may be spaced apart from the ground pin  334  by a distance of 0.02λ to 0.03λ. A current distribution obtained when the feeding pin  320  is spaced apart from the ground pin  334  by the distance of 0.02λ to 0.03λ is illustrated in  FIGS. 5A and 5B . As can be seen from  FIGS. 5A and 5B , when the feeding pin  320  is spaced apart from the ground pin  334  by the distance of 0.02λ to 0.03λ, the current distribution may concentrate in an inner portion of the radiator pattern  310 , the branch unit  332 , and the ground pin  334 . 
     Referring back to  FIGS. 2A, 2B and 3 , the connection element  250  may electrically connect the first antenna  240  and the second antenna  270 . The connection element  250  may be formed on the substrate  210  and protrude in the second direction D 2  from another end  314  of the radiator pattern  310  included in the first antenna  240 . 
     In an exemplary embodiment, the connection element  250  may be implemented as a lumped element. According to the present exemplary embodiment, the first antenna  240  and the second antenna  270  may be connected to a first terminal  252  of the connection element  250 , and a second terminal  254  of the connection element  250  may be floated. When the connection element  250  is implemented as the lumped element, the connection element  250  may be formed to have a predetermined height from a surface of the substrate  210 . Thus, the radiator pattern  310  of the first antenna  240  may be connected to a bottom surface of the first terminal  252  of the connection element  250 , and the second antenna  270  may be connected to a top surface of the first terminal  252  of the connection element  250  so that the first antenna  240  may be electrically connected to the second antenna  270 . 
     The insulating layer  260  may be formed on the second mounting region  214  of the substrate  210  to cover the first antenna  240  and the connection element  250 . The insulating layer  260  may be formed to have such a thickness as not to expose the first antenna  240  and the connection element  250  to the outside. Thus, the antenna block  230  according to the present invention may protect the first antenna  240  and the connection element  250  using only the insulating layer  260  without an additional external case. 
     Meanwhile, the insulating layer  260  may be formed to have the same height as that of the insulating layer  224  included in the wireless communication module  220 . In this case, the insulating layer  260  may be formed together with the insulating layer  224  of the wireless communication module  220 . 
     In an exemplary embodiment, the insulating layer  260  may be formed of epoxy. In another exemplary embodiment, the insulating layer  260  may be formed of a high-k dielectric material (e.g., a ceramic material) having a dielectric constant equal to or higher than a reference value. 
     The second antenna  270  may be formed on the insulating layer  260  to be electrically connected to the first antenna  240  through the connection element  250 . As described above, the second antenna  270  may be electrically connected to the first antenna  240  so that a length of the first antenna  240  may be extended by as much as a length of the second antenna  270 . In an exemplary embodiment, the second antenna  270  may be formed on the insulating layer  260  and extend in the first direction D 1 , and a distance between the second antenna  270  and the substrate  210  may range from 0.2λ to 0.3λ. 
     In this case, a first surface of the second antenna  270  may be in contact with the insulating layer  260 , and a second surface of the second antenna  270 , which is a reverse surface of the first surface, may be exposed outside the wireless communication chip  200 . That is, in the present invention, the second antenna  270  of the antenna block  230  may be disposed in an outermost region of the antenna block  230  and exposed to the outside. 
     In a case where the first antenna  240  is disposed on a bottom surface of the substrate  210  and the second antenna  270  is disposed on a top surface of the substrate  210 , a via hole configured to electrically connect the first antenna  240  to the second antenna  270  should be formed in the substrate  210 . In this case, however, since a thickness of the substrate  210  is small, it may be difficult to directly form the via hole in the substrate  210 . Accordingly, in the above-described embodiment, the first antenna  240 , the insulating layer  260 , and the second antenna  270  may be disposed in a stacked structure on the top surface of the substrate  210 . 
     Accordingly, in the present invention, the first antenna  240 , the insulating layer  260 , and the second antenna  270  may be disposed in a stacked structure on the top surface of the substrate  210 . Thus, the first and second antennas  240  and  270  may be electrically connected to each other without forming a via hole in the substrate  210 . Further, not only a distance between the second antenna  270  and the first antenna  240  but also a distance between the second antenna  270  and the first ground unit  330  may be obtained to improve antenna performance. 
     In an exemplary embodiment, as shown in  FIGS. 2A, 2B, and 3 , the second antenna  270  may include a compression groove  272  configured to electrically connect the second antenna  270  to the connection element  250 . The reason why the second antenna  270  according to the present invention includes the compression groove  272  may be as follows. When a height of the connection element  250  is smaller than that of the insulating layer  260 , since the connection element  250  is not exposed to the outside, the second antenna  270  formed on the insulating layer  260  cannot be connected to the connection element  250 . Therefore, a portion of the second antenna  270  may be compressed to form the compression groove  272 , so that the second antenna  270  may be connected to the connection element  250  by passing through the insulating layer  260 . 
     According to the present embodiment, the compression groove  272  of the second antenna  270  may be connected to the top surface of the first terminal  252  of the connection element  250 . 
     In the above-described exemplary embodiment, since the connection element  250  is formed to have a smaller height than that of the insulating layer  260 , the second antenna  270  may have the compression groove  272  to connect the second antenna  270  with the connection element  250 . However, in another exemplary embodiment, when the height of the connection element  250  is equal to or greater than that of the insulating layer  260  and the top surface of the first terminal  252  of the connection element  250  is exposed to the outside, the second antenna  270  may be directly connected to the top surface of the first terminal  252  of the connection element  250  without the separate compression groove  272 . Accordingly, the compression groove  272  may be selectively provided according to the heights of the connection element  250  and the insulating layer  260 . 
     In an exemplary embodiment, a resonance frequency of the second antenna  270  may be equal to a resonance frequency of the first antenna  240 . Thus, interference that may occur between the second antenna  270  and the first antenna  240  may be prevented. 
     As described above, according to the present invention, since the antenna block  230  is mounted in the wireless communication chip  200 , when the wireless communication chip  200  is mounted on a motherboard, an additional RF cable configured to connect the wireless communication chip  200  with an antenna is not required so that manufacturing costs may be reduced, and integration density may be increased on the motherboard. Therefore, the electronic device may be miniaturized, and easiness of a circuit interconnection on the motherboard may be enhanced to increase the convenience of manufacturing operations. 
     Furthermore, according to the present invention, since the antenna block  230  is not directly designed on the motherboard of the electronic device but mounted in the wireless communication chip  200 , a resonance frequency of an antenna may be prevented from varying according to a shape or size of the motherboard. 
     Embodiment 2 
     In the first embodiment, even in a case where the connection element  250  constituting the antenna block  230  is implemented as a lumped element, the first terminal  252  of the connection element  250  may be electrically connected to the first antenna  240  and the second antenna  270 , and the second terminal  254  of the connection element  250  may be floated. 
     However, an antenna block  230  according to a second exemplary embodiment may further include a second ground unit  340  configured to ground a connection element  250  as shown in  FIG. 6  to change a resonance frequency of the antenna block  230  using the connection element  250  that is implemented as a lumped element. 
     A wireless communication chip  600  shown in  FIG. 6 , according to the second exemplary embodiment, is the same as the wireless communication chip  200  shown in  FIGS. 2A and 2B , according to the first exemplary embodiment, except that the wireless communication chip  600  includes the second ground unit  340 . Therefore, only the second ground unit  340  will now be described for brevity. 
     The second ground unit  340  may electrically connect the connection element  250  to a ground unit (not shown) included in a wireless communication module  220  and ground the connection element  250 . To this end, the second ground unit  340  may extend from a second terminal  254  of the connection element  250  in a second direction D 2 . 
     As described above, according to the second exemplary embodiment of the present invention, the connection element  250  may be implemented as a lumped element including at least one of an inductor, a capacitor, and a resistor, a first terminal  252  of the connection element  250  may be connected to a first antenna  240  and a second antenna  270 , and the second terminal  254  of the connection element  250  may be grounded through the second ground unit  340 . Thus, since a resonance frequency of the antenna block  230  is variable according to a value of a circuit element constituting the connection element  250 , the antenna block  230  may be applied to various applications without adding a separate component or changing components. 
     In the second embodiment, like in the first embodiment, the first antenna  240 , an insulating layer  260 , and the second antenna  270  may be disposed in a stacked structure on a top surface of a substrate  210 . Thus, the first and second antennas  240  and  270  may be electrically connected to each other without forming a via hole in the substrate  210 . Further, not only a distance between the second antenna  270  and the first antenna  240  but also distances between the second antenna  270  and the first and second ground units  330  and  340  may be secured to improve antenna performance. 
     Embodiment 3 
     In the first and second exemplary embodiments, both the first antenna  240  and the second antenna  270  have been described as being included in the wireless communication chip  200 . However, a wireless communication chip according to a third exemplary embodiment may include only a second antenna  270 , and a first antenna  240  may be directly formed on a motherboard of an electronic device. Hereinafter, the electronic device including the wireless communication chip according to the third exemplary embodiment of the present invention will be described with reference to  FIGS. 7A, 7B, and 8 . 
       FIG. 7A  is a perspective view of an electronic device on which the wireless communication chip according to the third exemplary embodiment of the present invention is mounted.  FIG. 7B  is an exploded perspective view of the electronic device on which the wireless communication chip according to the third exemplary embodiment of the present invention is mounted.  FIG. 8  is a side view of the wireless communication chip according to the third exemplary embodiment of the present invention. 
     As shown in  FIGS. 7A, 7B, and 8 , an electronic device  700  may include a motherboard  710 , a wireless communication chip  720 , and a first antenna  240 . 
     Various chips (not shown) configured to implement functions of the electronic device  700  may be mounted on the motherboard  710 . In particular, the wireless communication chip  720  according to the third exemplary embodiment of the present invention may be mounted on the motherboard  710  according to the present invention, and the first antenna  240  according to the present invention may be formed on the motherboard  710 . That is, the first and second exemplary embodiments describe a case in which the first antenna  240  is included in the wireless communication chip  200 , while the third exemplary embodiment describe a case in which the first antenna  240  is not included in the wireless communication chip  720  but directly formed on the motherboard  710 . 
     The wireless communication chip  720  may be mounted on a predetermined region of the motherboard  710  so that the electronic device  700  may perform a communication function. In an exemplary embodiment, the wireless communication chip  720  may be a near-field communication chip, such as Bluetooth, WiFi, Beacon, or NFC, which may enable near-field communications. However, the present invention is not limited thereto, and the wireless communication chip  720  according to the present invention may be a communication chip, such as 3G, 4G, or 5G, which may enable wireless communications. 
     In an exemplary embodiment, the wireless communication chip  720  may be mounted on a central region of one side of the motherboard  710  as shown in  FIG. 9A  or mounted on a corner portion of the motherboard  710  as shown in  FIG. 10A . When the wireless communication chip  720  is mounted on the central region of the one side of the motherboard  710 , a radiation pattern may be as shown in  FIG. 9B . When the wireless communication chip  720  is mounted on the corner portion of the motherboard  710 , the radiation pattern may be as shown in  FIG. 10B . As can be seen from  FIGS. 9B and 10B , it can be seen that when the wireless communication chip  720  is mounted on the central region of the one side of the motherboard  710 , more uniform radiation patterns may be obtained than when the wireless communication chip  720  is mounted on the corner portion of the motherboard  710 . 
     The wireless communication chip  720  according to the third exemplary embodiment of the present invention may include a daughterboard  210 , a wireless communication module  220 , and an antenna block  230 , and the antenna block  230  may include a connection element  250 , an insulating layer  260 , and a second antenna  270 . Here, the daughterboard  210  may be synonymous with the substrate  210  of the first and second exemplary embodiments. 
     The wireless communication module  220  and the antenna block  230  may be mounted on the daughterboard  210 . In an exemplary embodiment, the daughterboard  210  may be a printed circuit board (PCB). The daughterboard  210  according to the present invention may include a first mounting region  212  on which the wireless communication module  220  is mounted and a second mounting region  214  on which the antenna block  230  is mounted. In this case, the first mounting region  212  and the second mounting region  214  may be formed to have smaller lengths in a first direction D 1  than in a second direction D 2 . 
     In an exemplary embodiment, as shown in  FIG. 7B , a first via hole  810  may be formed in the daughterboard  210  to connect the first antenna  240  with the wireless communication module  220 . 
     As shown in  FIGS. 7B and 8 , the first via hole  810  may be filled with a first conductor  812  to electrically connect the wireless communication module  220  with the first antenna  240 . In this case, as shown in  FIG. 7B , a sub-feeding pin  322  may be formed on the daughterboard  210  to electrically connect the first via hole  810  with the wireless communication module  220 . 
     In addition, as shown in  FIG. 7B , a second via hole  820  may be further formed in the daughterboard  210  to connect the first antenna  240  with the connection element  250 . As shown in  FIGS. 7B and 8 , the second via hole  820  may be filled with a second conductor  822  to electrically connect the connection element  250  with the first antenna  240 . 
     As described above, in the third exemplary embodiment, since the first antenna  240  is directly formed on the motherboard  710 , the wireless communication chip  720  and the first antenna  240  may be electrically connected to each other through the first and second via holes  810  and  820  formed in the daughterboard  210 . 
     The wireless communication module  220  may be molded on the first mounting region  212  of the daughterboard  210 . In an exemplary embodiment, the wireless communication module  220  may be a near-field communication module, such as Bluetooth, WiFi, Beacon, or NFC, or a communication module, such as 3G, 4G, or 5G. 
     The wireless communication module  220  may include a circuit interconnection (not shown) patterned on the first mounting region  212  of the daughterboard  210 , a baseband chip/RF chip  222  mounted on the first mounting region  212  of the daughterboard  210  to be electrically connected to the circuit interconnection to implement a communication function, and an insulating layer  224  configured to cover the baseband chip/RF chip  222 . 
     The antenna block  230  may be electrically connected to the wireless communication module  220  and transmit communication data supplied from the wireless communication module  220  to the outside or receive communication data received from the outside. The antenna block  230  may radiate communication data to the outside or receive communication data received from the outside using an electric signal (e.g., current) that is fed from the wireless communication module  220 . 
     As shown in  FIGS. 7A, 7B, and 8 , the antenna block  230  may include a connection element  250 , an insulating layer  260 , and a second antenna  270 . 
     The connection element  250  may be formed on the second mounting region  214  of the daughterboard  210  and electrically connect the second antenna  270  to the first antenna  240  formed on the motherboard  710 . As described above, the connection element  250  may be electrically connected to another end  314  of the first antenna  240  formed on the motherboard  710 , through the second via hole  820 . 
     In an exemplary embodiment, the connection element  250  may be implemented as a lumped element. According to the present embodiment, the first antenna  240  and the second antenna  270  may be connected to a first terminal  252  of the connection element  250 , and a second terminal  254  of the connection element  250  may be floated or electrically connected to a ground unit of the wireless communication module  220  through a second ground unit  340 . When the second terminal  254  of the connection element  250  is electrically connected to the ground unit of the wireless communication module  220  through the second ground unit  340 , a resonance frequency band of an antenna may be changed by adjusting a value of a circuit element included in the lumped element. In this case, the second ground unit  340  may extend from the second terminal  254  of the connection element  250  in the second direction D 2  and be electrically connected to the ground unit included in the wireless communication module  220 . 
     When the connection element  250  is implemented as the lumped element, the connection element  250  may be formed to have a predetermined height from the surface of the daughterboard  210 . Thus, a bottom surface of the first terminal  252  of the connection element  250  may be connected to a radiator pattern  310  of the first antenna  240  through the second via hole  820 , and a top surface of the first terminal  252  of the connection element  250  may be connected to the second antenna  270  so that the first antenna  240  may be electrically connected to the second antenna  270 . 
     The insulating layer  260  may be formed on the second mounting region  214  of the daughterboard  210  to cover the connection element  250 . The insulating layer  260  may be formed to have such a thickness as not to expose the connection element  250  to the outside. Thus, the antenna block  230  according to the present invention may protect the connection element  250  using only the insulating layer  260  without an additional external case. 
     Meanwhile, the insulating layer  260  may be formed to have the same height as that of the insulating layer  224  included in the wireless communication module  220 . In this case, the insulating layer  260  may be formed together with the insulating layer  224  of the wireless communication module  220 . 
     In an exemplary embodiment, the insulating layer  260  may be formed of epoxy. In another exemplary embodiment, the insulating layer  260  may be formed of a high-k dielectric material (e.g., a ceramic material) having a dielectric constant equal to or higher than a reference value. 
     The second antenna  270  may be formed on the insulating layer  260  to be electrically connected to the first antenna  240  through the connection element  250 . As described above, the second antenna  270  may be electrically connected to the first antenna  240  so that a length of the first antenna  240  may be extended by as much as a length of the second antenna  270 . In an exemplary embodiment, the second antenna  270  may be formed on the insulating layer  260  and extend in the first direction D 1 , and a distance between the second antenna  270  and the daughterboard  210  may range from 0.2λ to 0.3λ. 
     In this case, a first surface of the second antenna  270  may be in contact with the insulating layer  260 , and a second surface of the second antenna  270 , which is a reverse surface of the first surface, may be exposed outside the wireless communication chip  720 . That is, in the present invention, the second antenna  270  of the antenna block  230  may be disposed in an outermost region of the antenna block  230  and exposed to the outside. 
     In an exemplary embodiment, as shown in  FIGS. 7A, 7B, and 8 , the second antenna  270  may include a compression groove  272  configured to electrically connect the second antenna  270  to the connection element  250 . The reason why the second antenna  270  according to the present invention includes the compression groove  272  is as follows. When a height of the connection element  250  is smaller than that of the insulating layer  260 , since the connection element  250  is not exposed to the outside, the second antenna  270  formed on the insulating layer  260  cannot be connected to the connection element  250 . Therefore, a portion of the second antenna  270  may be compressed to form the compression groove  272 , so that the second antenna  270  may be connected to the connection element  250  by passing through the insulating layer  260 . 
     According to the present embodiment, the compression groove  272  of the second antenna  270  may be connected to the top surface of the first terminal  252  of the connection element  250 . 
     In the above-described exemplary embodiment, since the connection element  250  is formed to have a smaller height than that of the insulating layer  260 , the second antenna  270  may have the compression groove  272  to connect the second antenna  270  with the connection element  250 . However, in another exemplary embodiment, when the height of the connection element  250  is equal to or greater than that of the insulating layer  260  and the top surface of the first terminal  252  of the connection element  250  is exposed to the outside, the second antenna  270  may be directly connected to the top surface of the first terminal  252  of the connection element  250  without the separate compression groove  272 . Accordingly, the compression groove  272  may be selectively provided according to the heights of the connection element  250  and the insulating layer  260 . 
     The first antenna  240  may be directly formed on the motherboard  710 . The first antenna  240  may be formed on the motherboard  710  to be electrically connected to the wireless communication module  220  and the second antenna  270  of the antenna block  230 . The first antenna  240  may be patterned and formed on the motherboard  710 . 
     In an exemplary embodiment, the first antenna  240  may include a radiator pattern  310 , a feeding pin  320 , and a first ground unit  330 . 
     The radiator pattern  310  may be formed on the motherboard  710  to have a predetermined length. In this case, a length of the radiator pattern  310  may be determined according to a desired resonance frequency band. The radiator pattern  310  may be bent at least once to implement a desired resonance frequency band. That is, the radiator pattern  310  according to the present invention may be formed as a meander line pattern. 
     In an exemplary embodiment, the radiator pattern  310  may be formed on the motherboard  710  and extend in the first direction D 1 . 
     The feeding pin  320  may be electrically connected to the wireless communication module  220  through the first via hole  810  and the sub-feeding pin  322 , and supply an electric signal supplied from the wireless communication module  220  to the radiator pattern  310 . In an exemplary embodiment, the feeding pin  320  may be formed to extend from one end  312  of the radiator pattern  310  in the second direction D 2 . 
     The first ground unit  330  may ground the radiator pattern  310 . To ground the radiator pattern  310 , the first ground unit  330  may electrically connect the radiator pattern  310  to a ground unit (not shown) formed on the motherboard  710 . 
     In an exemplary embodiment, the first ground unit  330  may be branched from the feeding pin  320 . According to this exemplary embodiment, as shown in  FIGS. 7A and 7B , the first ground unit  330  may include a branch unit  332  and a ground pin  334 . 
     The branch unit  332  may extend from the feeding pin  320  in the first direction D 1 . The ground pin  334  may extend from one end of the branch unit  332  in the second direction D 2 . The ground pin  334  may be electrically connected to the ground unit formed on the motherboard  710 . That is, one end of the ground pin  334  may be connected to the branch unit  332 , while another end of the ground pin  334  may be electrically connected to the ground unit of the motherboard  710 . 
     In the above-described embodiment, a length of the branch unit  332  may be set as such a value that a current distribution concentrates in the branch unit  332  and the ground pin  334 . For example, the length of the branch unit  332  may be set to be 0.02λ to 0.03λ. Thus, the feeding pin  320  may be spaced apart from the ground pin  334  by a distance of 0.02λ to 0.03λ. 
     In an exemplary embodiment, a resonance frequency of the first antenna  240  may be equal to a resonance frequency of the second antenna  270 . Thus, interference that may occur between the first antenna  240  and the second antenna  270  may be prevented. 
     As described above, according to the third exemplary embodiment of the present invention, the first antenna  240  formed on the motherboard  710  may be electrically connected to the antenna block  230  embedded in the wireless communication chip  720  to improve radiation intensity. 
     Hereinafter, a method of fabricating a wireless communication chip according to the present invention will briefly be described with reference to  FIG. 11 . 
       FIG. 11  is a flowchart of methods of fabricating the wireless communication chips according to the above-described first and second exemplary embodiments. 
     As shown in  FIG. 11 , to begin with, a circuit interconnection constituting a wireless communication module  220  and a baseband chip/RF chip  222 , which is electrically connected to the circuit interconnection, may be mounted on a first mounting region  212  of a substrate  210  (S 1100 ). 
     Thereafter, a first antenna  240  and a connection element  250  may be formed on a second mounting region  214  of the substrate  210  (S 1110 ). As described above and shown in  FIGS. 2A, 2B, and 3 , the first antenna  240  includes a radiator pattern  310 , a feeding pin  320 , and a first ground unit  330 . Further, the first antenna  240  may further include a second ground unit  340  configured to ground the connection element  250 . Since the radiator pattern  310 , the feeding pin  320 , the first ground unit  330 , and the second ground unit  340  have already been described with reference to  FIGS. 2A, 2B, 3, and 6 , a detailed description thereof will be omitted. 
     Meanwhile, the connection element  250  may be formed on the substrate  210  and protrude in a second direction D 2  from another end  314  of the radiator pattern  310  included in the first antenna  240 . In an exemplary embodiment, the connection element  250  may be implemented as a lumped element. According to the present embodiment, the first antenna  240  may be connected to a first terminal  252  of the connection element  250 , and a second terminal  254  of the connection element  250  may be floated or grounded through the second ground unit  340 . 
     Thereafter, insulating layers  224  and  260  may be formed on an entire surface of the substrate  210  (S 1120 ). That is, the insulating layers  224  and  260  may be formed on the entire first and second mounting regions  212  and  214  of the substrate  210 . The circuit interconnection constituting the wireless communication module  220 , the baseband chip/RF chip  222 , which is electrically connected to the circuit interconnection, the first antenna  240 , and the connection element  250 , may be wholly covered with the insulating layers  224  and  260 . 
     In an exemplary embodiment, the insulating layers  224  and  260  may be formed by ejecting a material, such as epoxy or a ceramic material having a high dielectric constant, on the substrate  210  using a dispenser. 
     In the above-described embodiment, the insulating layers  224  and  260  have been described as being simultaneously formed on the first mounting region  212  and the second mounting region  214  of the substrate  210 . However, in a modified exemplary embodiment, after the insulating layer  224  is formed by ejecting an insulating material on the first mounting region  212 , the insulating layer  260  may be formed by ejecting an insulating material on the second mounting region  214 . 
     In another exemplary embodiment, after the insulating layer  260  is formed by ejecting an insulating material on the second mounting region  214 , the insulating layer  224  may be formed by ejecting an insulating material on the first mounting region  212 . 
     In still another exemplary embodiment, after operation S 1100  is ended, an insulating material may be ejected on the first mounting region  212  to form the insulating layer  224 . Thereafter, operation S 1110  may be performed to form the first antenna  240  and the connection element  250 . Subsequently, an insulating material may be ejected on the second mounting region  214  to form the insulating layer  260 . 
     In yet another exemplary embodiment, after operation S 1110  is performed to form the first antenna  240  and the connection element  250 , an insulating material may be ejected on the second mounting region  214  to form the insulating layer  260 . Thereafter, operation S 1100  may be performed to mount the circuit interconnection constituting the wireless communication module  220  and the baseband chip/RF chip  222  that is electrically connected to the circuit interconnection. Subsequently, an insulating material may be ejected on the first mounting region  212  to form the insulating layer  224 . 
     Thereafter, a second antenna  270  may be formed on the insulating layer  260  (S 1130 ). In an exemplary embodiment, the second antenna  270  may be formed on the insulating layer  260  and extend in a first direction D 1 . In this case, a first surface of the second antenna  270  may be in contact with the insulating layer  260 , and a second surface of the second antenna  270 , which is a reverse surface of the first surface, may be exposed outside a wireless communication chip  200 . That is, in the present invention, the second antenna  270  of an antenna block  230  may be disposed in an outermost region of the antenna block  230  and exposed to the outside. 
     Subsequently, the second antenna  270  may be electrically connected to the first antenna  240  (S 1140 ). In this case, a distance between the second antenna  270  and the substrate  210  may range from 0.2λ to 0.3λ. 
     In an exemplary embodiment, when a height of the connection element  250  is smaller than that of the insulating layer  260 , a compression groove  272  may be formed by compressing a portion of the second antenna  270  so that the second antenna  270  may be connected to the connection element  250  by passing through the insulating layer  260 . According to the present embodiment, the compression groove  272  of the second antenna  270  may be connected to a top surface of the first terminal  252  of the connection element  250 . 
     As described above, the second antenna  270  may be electrically connected to the first antenna  240  so that a length of the first antenna  240  may be extended by as much as a length of the second antenna  270 . In the above-described embodiment, since the connection element  250  is formed to have a smaller height than that of the insulating layer  260 , the compression groove  272  may be formed in the second antenna  270  so that the second antenna  270  may be connected to the connection element  250 . However, in another exemplary embodiment, the connection element  250  may have the same height as or a greater height than that of the insulating layer  260 . Thus, when the top surface of the first terminal  252  of the connection element  250  is exposed to the outside, the second antenna  270  may be directly connected to the top surface of the first terminal  252  of the connection element  250  without the separate compression groove  272 . 
     Hereinafter, a method of fabricating an electronic device including a wireless communication chip according to a third exemplary embodiment of the present invention will be described with reference to  FIG. 12 . From the method of fabricating the electronic device, only a method of fabricating a wireless communication chip and a method of mounting the fabricated wireless communication chip on a motherboard will be described in detail with reference to  FIG. 12 . 
     To begin with, as shown in  FIG. 12 , a circuit interconnection constituting a wireless communication module  220  and a baseband chip/RF chip  222 , which is electrically connected to the circuit interconnection, may be mounted on a first mounting region  212  of a daughterboard  210  (S 1200 ). 
     Next, a connection element  250  may be formed in a second mounting region  214  of the daughterboard  210  (S 1210 ). The connection element  250  may be implemented as a lumped element. In an exemplary embodiment, a second terminal  254  of the connection element  250  may be electrically connected to a ground unit included in the wireless communication module  220  through a second ground unit  340 . 
     Thereafter, insulating layers  224  and  260  may be formed on an entire surface of the daughterboard  210  (S 1220 ). That is, the insulating layers  224  and  260  may be formed on the entire first and second mounting regions  212  and  214  of the daughterboard  210 . The circuit interconnection constituting the wireless communication module  220 , the baseband chip/RF chip  222 , which is electrically connected to the circuit interconnection, and the connection element  250 , may be wholly covered with the insulating layers  224  and  260 . 
     In an exemplary embodiment, the insulating layers  224  and  260  may be formed by ejecting a material, such as epoxy or a ceramic material having a high dielectric constant, on the daughterboard  210  using a dispenser. 
     In the above-described embodiment, the insulating layers  224  and  260  have been described as being simultaneously formed on the first mounting region  212  and the second mounting region  214  of the daughterboard  210 . However, in a modified exemplary embodiment, after the insulating layer  224  is formed by ejecting an insulating material on the first mounting region  212 , the insulating layer  260  may be formed by ejecting an insulating material on the second mounting region  214 . 
     In another exemplary embodiment, after the insulating layer  260  is formed by ejecting an insulating material on the second mounting region  214 , the insulating layer  224  may be formed by ejecting an insulating material on the first mounting region  212 . 
     In still another exemplary embodiment, after operation S 1200  is ended, an insulating material may be ejected on the first mounting region  212  to form the insulating layer  224 . Thereafter, operation S 1210  may be performed to form the connection element  250 . Subsequently, an insulating material may be ejected on the second mounting region  214  to form the insulating layer  260 . 
     In yet another exemplary embodiment, after operation S 1210  is performed to form the connection element  250 , an insulating material may be ejected on the second mounting region  214  to form the insulating layer  260 . Thereafter, operation S 1200  may be performed to mount the circuit interconnection constituting the wireless communication module  220  and the baseband chip/RF chip  222  that is electrically connected to the circuit interconnection. Subsequently, an insulating material may be ejected on the first mounting region  212  to form the insulating layer  224 . 
     Thereafter, a second antenna  270  may be formed on the insulating layer  260  (S 1230 ). In an exemplary embodiment, the second antenna  270  may be formed on the insulating layer  260  and extend in a first direction D 1 . In this case, a first surface of the second antenna  270  may be in contact with the insulating layer  260 , and a second surface of the second antenna  270 , which is a reverse surface of the first surface, may be exposed outside a wireless communication chip  720 . That is, in the present invention, the second antenna  270  of an antenna block  230  may be disposed in an outermost region of the antenna block  230  and exposed to the outside. 
     Thereafter, the second antenna  270  may be electrically connected to the connection element  250  (S 1240 ). Thus, the wireless communication module  220  may be completed. In this case, a distance between the second antenna  270  and the daughterboard  210  may range from 0.02λ to 0.03λ. 
     In an exemplary embodiment, when a height of the connection element  250  is smaller than that of the insulating layer  260 , a compression groove  272  may be formed by compressing a portion of the second antenna  270  so that the antenna  270  may be connected to the connection element  250  by passing through the insulating layer  260 . According to the present embodiment, the compression groove  272  of the second antenna  270  may be connected to a top surface of a first terminal  252  of the connection element  250 . 
     In the above-described embodiment, since the connection element  250  is formed to have a smaller height than that of the insulating layer  260 , the compression groove  272  may be formed in the second antenna  270  so that the second antenna  270  may be connected to the connection element  250 . However, in another exemplary embodiment, the connection element  250  may have the same height as or a greater height than that of the insulating layer  260 . Thus, when the top surface of the first terminal  252  of the connection element  250  is exposed to the outside, the second antenna  270  may be directly connected to the top surface of the first terminal  252  of the connection element  250  without the separate compression groove  272 . 
     Thereafter, a first via hole  810  and a second via hole  820  may be formed in the second mounting region  214  of the daughterboard  210  (S 1250 ). The first via hole  810  may be formed to electrically connect a first antenna  240  formed on a motherboard  710  with the wireless communication module  220 , and the second via hole  820  may be formed to electrically connect the first antenna  240  with the connection element  250 . 
     Subsequently, the wireless communication chip  720  may be mounted on the motherboard  710  to be electrically connected to the first antenna  240  formed on the motherboard  710  (S 1260 ). As described above with reference to  FIGS. 8, 9A and 9B , the first antenna  240  formed on the motherboard  710  may include a radiator pattern  310 , a feeding pin  320 , and a first ground unit  330 . Since the radiator pattern  310 , the feeding pin  320 , and the first ground unit  330  have been described above with reference to  FIGS. 8, 9A and 9B , a detailed description thereof will be omitted. 
     In this case, when the wireless communication chip  720  is mounted on the motherboard  710 , the first via hole  810  may be filled with a first conductor  812  to electrically connect the feeding pin  320  of the first antenna  240  with the wireless communication module  220 . The second via hole  820  may be filled with a second conductor  822  to electrically connect the first antenna  240  with a lower end of the first terminal  252  of the connection element  250 . As described above, since the first antenna  240  is electrically connected to the connection element  250  through the second via hole  820 , and the connection element  250  is electrically connected to the second antenna  270 , the first antenna  240  may be electrically connected to the second antenna  270  so that a length of the first antenna  240  may be extended by as much as a length of the second antenna  270 . 
     Meanwhile, although not shown in  FIG. 12 , the above-described operations S 1200  to S 1260  may further include an operation of forming the first antenna  240  on the motherboard  710 . 
     According to the present invention, since an antenna is embedded in a wireless communication chip, an RF cable configured to connect the antenna to the wireless communication chip is not required on a motherboard of an electronic device. Thus, manufacturing costs can be reduced, and the electronic device can be miniaturized. 
     In addition, according to the present invention, since an antenna is not directly designed on a motherboard of an electronic device, a resonance frequency of the antenna can be prevented from varying according to a shape or size of the motherboard. 
     Furthermore, according to the present invention, since a resonance frequency of an antenna is variable using a lumped element included in the antenna, the antenna can be applied to various applications without adding a separate component or changing components. 
     It will be understood by one of skill in the art that the present invention may be implemented in other specific forms without changing the technical spirit or essential characteristics thereof. 
     Therefore, it should be understood that the above-described embodiments are not restrictive but illustrative in every respect. The scope of the present invention is defined by the following claims rather than the detailed description. All changes or modifications that are derived from the meaning and scope of the claims and equivalents thereof should be construed as being included within the scope of the present invention. 
     
       
         
           
               
             
               
                   
               
               
                 [Description of symbols] 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                   
                 200: wireless communication chip 
                 210: substrate 
               
               
                   
                 220: wireless communication module 
                 230: antenna block 
               
               
                   
                 240: first antenna 
                 250: connection element 
               
               
                   
                 260: insulating layer 
                 270: second antenna