Abstract:
An antenna structure includes a first carrier, a second carrier and an antenna main body. The antenna main body includes a main antenna and a sub antenna. The main antenna is printed on the first carrier, the sub antenna is printed on the second carrier. The present invention also provides a wireless communication device using the antenna structure.

Description:
FIELD 
     The subject matter herein generally relates to an antenna structure and a wireless communication device using the antenna structure. 
     BACKGROUND 
     Metal housings are widely used for electronic devices. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Implementations of the present technology will now be described, by way of example only, with reference to the attached figures. 
         FIG. 1  is an isometric view of a wireless communication device having an antenna structure according to an exemplary embodiment. 
         FIG. 2  is an exploded, isometric view of the wireless communication device shown in  FIG. 1 . 
         FIG. 3  is similar to  FIG. 2 , but shown from another angle. 
         FIG. 4  is an isometric view of an antenna structure of the wireless communication device according to an exemplary embodiment. 
         FIG. 5  is an isometric view of an antenna structure of the wireless communication device according to another exemplary embodiment. 
     
    
    
     DETAILED DESCRIPTION 
       FIG. 1  illustrates a wireless communication device  100  according to an exemplary embodiment. The wireless communication device  100  can be a mobile phone or a personal digital assistant. 
       FIG. 2  illustrates that the wireless communication device  100  includes a top housing  10 , a supporter  30 , an antenna structure  50  attached on the supporter  30 , and a bottom housing  70  detachably mounted on the top housing  10 . The supporter  30  can be received in the bottom housing  70 . The antenna structure  50  is sandwiched between the supporter  30  and the bottom housing  70 . In at least one embodiment, the top housing  10  can be made of glass. 
     In at least one embodiment, the supporter  30  can be made of a plastic. The supporter  30  includes two opposite connecting arms  31 , two opposite end portions  33  and two opposite side portions  35 . Each of the connecting arms  31  is connected to the two end portions  33 . The two side portions  35  are connected to the two end portions  33 , respectively. Each of the junctions of the end portions  33  and the side portions  35  defines a slot  331 . The slots  331  can be used to fix the antenna structure  50 . One end portion  33  defines a first aperture  333  and two through holes  337 . Another end portion  33  defines a second aperture  335 . The through holes  337  can be used to receive a camera (not shown) and a flash lamp (not shown), respectively. 
     Referring to  FIGS. 2-3 , each of the surfaces of the two side portions  33  facing the bottom housing  70  defines two grooves  339 . The grooves  339  can be positioned on the two opposite ends of the side portions  33 , respectively. The grooves  339  can be used to receive the antenna structure  50 . 
     Referring to  FIGS. 4-5 , the antenna structure  50  includes a first carrier  51 , a second carrier  53  facing the first carrier  51 , and two antenna main bodies  55 . The antenna main bodies  55  can be formed on the first carrier  51  and the second carrier  53 , respectively. 
     In at least one embodiment, the first carrier  51  can be made of a ceramic. The first carrier  51  includes a first plate  511 , a first end wall  513  protruding from the first plate  511 , and two first locating members  515 . The first end wall  513  is perpendicularly located at one end of the first plate  511 . The junctions of the first plate  511  and the first end wall  513  define the two first locating members  515 . 
     In at least one embodiment, the second carrier  53  can be made of a ceramic. The second carrier  53  includes a second plate  531 , a second end wall  533 , and two second locating members  535 . The second end wall  533  is perpendicularly located at one end of the second plate  531 . The junctions of the second plate  531  and the second end wall  533  define the two second locating members  535 . 
     The second plate  531  has the same shape and size as the first plate  511 . The second plate  531  has two engagement holes  537 , the engagement holes  537  can be used to receive a camera (not shown) and a flash lamp (not shown), respectively. 
     The two opposite ends of the second end wall  533  define an earphone jack  538  and a USB slot  539 , respectively. The earphone jack  538  can be used to receive an earphone (not shown). The USB slot  539  can be used to receive a memory device, such as a USB disk. 
     The shape of the antenna main body  55  can be changed according to the demand of the wireless communication device  100 . The antenna main body  55  includes a main antenna  551  and a sub antenna  553 . 
     The main antenna  551  can be printed on the first plate  511 , and electrically connected with the circuit board (not shown) through the second apertures  335  of the supporter  30 . The main antenna  551  plays the main role of the antenna structure  50 . 
     The sub antenna  553  includes a WIFI antenna (not shown), a GPS antenna (not shown), and a BLUETOOTH™ antenna (not shown). The sub antenna  553  can adjust the frequency of the antenna structure  50 . The sub antenna  553  is printed on the second plate  531  of the second carrier  53 , and electrically connected with the circuit board (not shown) through the first apertures  333  of the supporter  30 . The position of the sub antenna  553  can be changed according to the demand of the wireless communication device  100 . 
     The bottom housing  70  can be made of a metal. The bottom housing  70  includes a main housing  71 . The main housing  71  is tubular shaped and defines a receiving space  713 , the receiving space  713  can be used to receive the supporter  30 , the circuit board (not shown) and the antenna structure  50 . The main housing  71  further includes two opposite curved walls  73 , and two opposite body walls  74  connected with the curved walls  73 . The two curved walls  73  and two body walls  74  cooperatively form the receiving space  713 . The body wall  74  adjacent to the top housing  10  defines an opening  741 , thereby forms two opposite upper edges  75 . The opening  741  is rectangular shaped. The opening  741  has the same shape and size as the top housing  10 . Another body wall  74  defines two cutouts  711 . The two cutouts  711  can be formed at the two opposite ends of the body wall  74 , respectively. The cutouts  711  have the same shape and size as the first plate  511  and the second plate  531 . 
     When assembling the wireless communication device  100 , the antenna structure  50  can be received in spaces cooperatively formed by the cutouts  711  and the grooves  339 . The engagement holes  537  of the second carrier  53  correspond to the through holes  337  of the side portions  33 . The first locating members  515  and the second locating members  535  are all located in the slots  331  of the side portions  33 , respectively. The supporter  30  is mounted in the bottom housing  70 . The upper edges  75  stand above the supporter  30 . The two side portions  35  are attached on the first end wall  513  and the second end wall  533 , respectively. The top housing  10  is mounted in the opening  741  of the bottom housing  70 . The two ends of the top housing  10  are seamlessly and detachably connected to the upper edges  75 . 
     In at least one embodiment, the circuit board is mounted in the supporter  30 , and electrically connected with the antenna structure  50 . The wireless communication device  100  further includes a display member (not shown) located between the top housing  10  and the circuit board. 
     It is believed that the exemplary embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the scope of the disclosure or sacrificing all of its material advantages, the examples hereinbefore described merely being preferred or exemplary embodiments of the disclosure.