Abstract:
Disclosed herein is a wireless communication module, wherein a module substrate provided with components of a communication circuit part for the wireless communication module and having a ground pattern and a power feeding pattern is provided thereon with a shield can type antenna, the shield can type antenna comprises a ground area, a plurality of curved parts formed by downwardly curving both up/down and left/right side surfaces of the ground area, and an antenna part provided at the outer side of the curved part formed at both left/right side surfaces of the ground area.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the benefit under 35 U.S.C. §119 of Korean Application No. 10-2009-0076657, filed Aug. 19, 2009, which is hereby incorporated by reference in their entirety. 
     BACKGROUND 
     1. Field of the Invention 
     The present invention relates to a wireless communication module. 
     2. Description of the Related Art 
     A mobile communication terminal such as a cell phone, a smart phone and a PDA (Personal Digital Assistant) provides various services based on a communication function. 
     A wireless communication module for providing a specific communication function largely has a similar configuration. 
     Therefore, integration components used in a wireless communication in a unit space and mounting the same on various products facilitate the implementation of a communication function. 
     Normally, a wireless communication module is provided with a communication circuit part comprised of each component including integrated chips in the upper surface of a module substrate, and the communication circuit part is screened by a shield can for screening electronic waves. 
     And, an antenna mounting unit is formed on one side area of the module substrate, and the antenna mounting unit is provided with a miniaturized antenna such as chip antennas and a PIFA (Planar Inverted F Antenna). 
     A given wireless signal processed in the communication circuit unit is transmitted/received via an antenna provided at the antenna mounting unit. 
     Such a wireless communication module provides a mobile communication terminal with a communication function for example, by being provided on a main substrate of a mobile communication terminal and interoperating with a system of a mobile communication terminal. 
     Considering the size of the mobile communication terminal is gradually small-sized and supporting functions successively increase, there have been continuous efforts to integrate much more electronic components into a smaller space. 
     And, in the wireless communication module field, an endeavor to improve spatial efficiency while compensating a transmission/reception function has been continuously made. 
     However, because the wireless communication module is provided with antennas by forming an antenna mounting part on one side of a module substrate, there is a limitedness in miniaturizing its size due to an area of an antenna mounting part. 
     BRIEF SUMMARY 
     In accordance with a wireless communication module of the present invention, a module substrate provided with components of a communication circuit part and having a ground pattern and a power feeding pattern is provided thereon with a shield can type antenna. 
     The shield can type antenna may include a ground area, a plurality of curved parts formed by downwardly curving both up/down and left/right side surfaces of the ground area, and an antenna part provided at the outer side of the curved part of both left/right side surfaces of the ground area. 
     Curved parts respectively downwardly curved at the upper and lower parts of the module substrate may be electronically connected to the ground pattern via the module substrate. 
     Components of the communication circuit part provided on the module substrate may be positioned within a space part forming of the ground area and the plurality of curved parts to shield electronic waves produced from the communication circuit part. 
     A radiation patch of the antenna part may be positioned in parallel with curved parts downwardly curved at both left/right side surfaces of the ground area, and the antenna part may have a power feeding part connecting the power feeding pattern to the radiation patch as well as a connection part, and the connection part may connect the radiation patch to the ground area. 
     The antenna part may include a PIFA (Planar Inverted-F Antenna). 
     Also, the antenna part may include a first antenna and a second antenna, respectively parallel disposed with curved parts downwardly curved at both left/right side surfaces of the ground area, and each of the first antenna and the second antenna may include a radiation patch parallel positioned with a respective curved part downwardly curved at both left/right side surfaces of the ground area, a power feeding part connecting the power feeding pattern to the radiation patch and a connection part connecting the radiation patch and the ground area to be integrally configured. 
     The power feeding pattern may be electrically connected to the power feeding pattern via the module substrate. 
     Each of the first antenna and the second antenna may include a PIFA (Planar Inverted-F Antenna), where the first antenna may be a main antenna transceiving a radio signal and the second antenna may include a diversity antenna receiving a radio signal. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a planar view showing the construction of a wireless communication module of the invention; 
         FIG. 2  is a planar view showing an unfold shield can type antenna used in a wireless communication module of the invention; 
         FIG. 3  is a perspective view showing an extracted part of a shield can antenna used in a wireless communication module of the invention; and 
         FIG. 4  is a perspective view showing a status of a shield can antenna mounted on a module substrate, used in a wireless communication module of the invention. 
     
    
    
     DETAILED DESCRIPTION 
     The following detailed description is by method of example, and merely illustrative of embodiments of the invention. In addition, the principle and concept of the present invention will be provided for the purpose of the most useful and easy description. 
     Thus, it should be noted that unnecessary and detailed structures in the basic understanding of the present invention have not been provided, and several kinds of forms possibly practiced by one skilled in the art from the substance of the invention will be exemplified through the drawings. 
     Hereinafter, a wireless communication module in which a superiorly spatial efficient antenna of the invention is provided on a module substrate for a possible size miniaturization will be described with reference to the planar views and perspective views of  FIGS. 1 through 4 . 
       FIG. 1  is a planar view showing the construction of a wireless communication module of the present invention. 
     Herein, a reference number  100  is a module substrate. The module substrate  100  uses a PCB (Printed Circuit Board) or a ceramic substrate such as HTCC (High Temperature Co-fired Ceramic) or LTCC (Low Temperature Co-fired Ceramic). 
     On the upper surface of the module substrate  100 , a communication circuit part  110  comprised of each kind of component including a RF (Radio Frequency) chip and an integrated chip is provided. 
     A reference number  120  is a shield can type antenna formed of metal material. 
       FIG. 2  is a planar view showing an unfold shield can type antenna used in a wireless communication module of the present invention, and  FIG. 3  is a perspective view showing an extracted part of a shield can antenna used in a wireless communication module of the present invention. As illustrated in  FIGS. 2 and 3 , for the shield can type antenna  120 , a curved part  124   a ,  124   b ,  124   c ,  124   d  is formed by downwardly curving both upper/lower and left/right side surfaces of a ground area  122 . 
     And, in the outer surface of the curved part  124   c ,  124   d , a first antenna  126  and a second antenna  128  having a power feeding part  126   a ,  128   a  and a radiation patch  126   b ,  128   b  are provided. 
     The first antenna  126  and the second antenna  128  are connected to the ground area  122  via a connection part  126   c ,  128   c  to be integrally configured. 
     For a wireless communication module having such a configuration, a communication circuit part  110  comprised of each kind of component including a RF device and an integrated chip, etc. may be realized. 
     In a case of fixing a shield can type antenna  120  to a module substrate  100 , components forming the communication circuit part  110  may be in the inner side of a space comprised of a ground area  122  and a curved part  124   a ,  124   b ,  124   c ,  124   d.    
       FIG. 4  is a perspective view showing a status a shield can type antenna used in a wireless communication module of the invention is mounted on a module substrate, and as shown in  FIG. 4 , a curved part  124   a ,  124   b  positioned at the upper/lower part of the ground area  122  is electrically connected to a ground pattern formed in the bottom surface of a module substrate  100 , via the module substrate  100 . 
     A power feeding part  126   a ,  128   a  of the first antenna  126  and the second antenna  128  is electrically connected to a power feeding pattern  400  of the communication circuit part  110 , via the module substrate  100 . 
     In a shield can type antenna  120  of the present invention as described above and in the inner side space comprised of a ground area  122  and a curved part  124   a ,  124   b ,  124   c ,  124   d , a shield can type antenna  120  is fixed to a module substrate  100  to shield a communication circuit part  110  provided with each kind of component including a RF device or an integrated chip, etc. 
     The ground area  122  and the curved part  124   a ,  124   b ,  124   c ,  124   d  are formed of metal material, and a curved part  124   a ,  124   b  is electrically connected to a ground pattern via the module substrate  100 . 
     Hence, the ground area  122  and the curved part  124   a ,  124   b ,  124   c ,  124   d  performs a ground function to block electronic waves produced from a communication circuit part  110  and thus to prevent it from leaking outside. 
     And, at both left/right side of the ground area  122 , a power feeding part  126   a ,  128   a  and a radiation patch  126   b ,  128   b  are provided, and a first antenna  126  and a second antenna  128  integrally connected to the ground area  122  via a connection part  126   c ,  128   c  are provided. 
     The first antenna  126  and the second antenna  128  operate as a PIFA (Planar Inverted-F Antenna) including a power feeding part  126   a ,  128   a  and a ground part in addition to a radiation patch  126   b ,  128   b . That is, it is an antenna designed to resonate at a desirable frequency band by adjusting the size of a radiation patch  126   b ,  128   b  and the length and position of a power feeding part  126   a ,  128   a.    
     The first antenna  126  and the second antenna  128  are arranged at both side surfaces of a ground area  122 , respectively, a power feeding part  126   a ,  128   a  is connected to a power feeding pattern via the module substrate  100 , and a connection part  126   c ,  128   c  is connected to a ground area  122  as a ground pin. 
     Therefore, the first antenna  126  and the second first  128  receives a current supplied by the module substrate  100  through a power feeding part  126   a ,  128   a  to resonate at a set frequency band, thereby transceiving a wireless signal processed through a communication circuit part  110 , and being connected to a ground area  122  through a connection part  126   c ,  128   c  for earthing. 
     In the present invention described above, of the first antenna  126  and the second antenna  128 , the first antenna  126  may be used as a main antenna transmitting/receiving a wireless antenna and the second antenna  128  may be used as a diversity antenna receiving a wireless antenna, and as design methodologies mounting of only one antenna may be possible. 
     While the present invention has been described in detail through representative embodiments in the above part, those skilled in the art would understand that various modifications can be made in the described embodiment without departing from the scope of the present invention. 
     Therefore, the scope of the present invention rights should not be restricted to the described embodiment, but should be defined by the accompanying claims and its equivalents.