Abstract:
A method for manufacturing an antenna is disclosed, and the method includes the steps of: providing a wire and a stamping tool, stamping the wire into a flat antenna pattern by the stamping tool, providing a ferrite plate with the antenna pattern attached to the ferrite plate.

Description:
FIELD OF THE INVENTION 
       [0001]    The present disclosure relates to radio frequency identification technologies, and more specifically to an antenna and a method for manufacturing the antenna. 
       DESCRIPTION OF RELATED ART 
       [0002]    With the rapidly development of radio frequency identification technologies, radio frequency identification (RFID) tags are widely used in various fields such as distribution, logistic, material handling industries, and non-contact integrated circuits. 
         [0003]    A related radio frequency identification tag includes an antenna and an integrated circuit connected with the antenna for providing object information. And there are various methods provided for manufacturing a radio frequency antenna, such as entwining enameled wires, printing silk screen, or making flexible printed circuit boards (FPCB). 
         [0004]    A conventional antenna which is made of FPCB consisting of an insulator layer, a conductive layer having an antenna pattern, and adhesive tapes disposed therebetween. However, the cost for manufacturing such an antenna is increased because the cost of the FPCB unit is high and the FPCB is required for at least two adhesive tapes. Further, it&#39;s difficult to make a thin antenna by using FPCB because a typical height of FPCB is at least 0.1 mm and the total thickness of the antenna is accordingly increased. Otherwise, the antenna made of FPCB is easy to be broken because of the poor flexibility of the FPCB. 
         [0005]    Therefore, it is desirable to provide a new antenna and a new method which can overcome the above-mentioned problems. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0006]    Many aspects of the embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views. 
           [0007]      FIG. 1  shows an isometric and exploded view of an antenna in accordance with an exemplary embodiment of the present disclosure; 
           [0008]      FIG. 2  is an illustration showing an antenna pattern formed by a stamping tool; 
           [0009]      FIG. 3  shows the antenna pattern disposed on an adhesive layer of a ferrite plate in accordance with the exemplary embodiment of the present disclosure. 
           [0010]      FIG. 4  shows the antenna pattern attached to an adhesive tape ready to be attached to a ferrite plate in accordance with another embodiment of the present disclosure; 
           [0011]      FIG. 5  shows an isometric and exploded view of the antenna in FIG.  4 . 
       
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
       [0012]    Referring to  FIG. 1 , an antenna  1  includes a ferrite plate  14 , an adhesive layer  17  attached to a first face of the ferrite plate  14 , an antenna pattern  11  disposed on the adhesive layer  17 , a plastic film  15  attached to a second face of the ferrite plate  14  opposite to the first face, and a double-faced adhesive tape  16  attached to the antenna pattern  11  so that the antenna  1  is able to be pasted to a selected terminal. 
         [0013]    The ferrite plate  14  is made from ferrite material. By virtue of its high resistivity and magnetic permeability, the ferrite plate  14  is able to lead the environmental magnetic field. The plastic film  15  is made from transparent polyester film. 
         [0014]    A method for manufacturing the antenna  1  described above comprises the processes which are described below. 
         [0015]    Firstly, referring to  FIG. 2 , provide a wire  11   a  and a stamping tool  18  including an upper portion  18   a  with a first pattern shaping region  181  and a lower portion  18   b  with a second pattern shaping region  182  matching with the first pattern shaping region  181 , and put the wire  11   a  in the second pattern shaping region  182 . The wire  11   a  is optionally made from copper; 
         [0016]    Secondly, stamp the wire  11   a  to a flat antenna pattern  11  by engaging the upper portion  18   a  and the lower portion  18   b  of the stamping tool  18 ; 
         [0017]    Thirdly, referring to  FIG. 3 , provide a ferrite plate  14  with an adhesive layer  17  disposed on a first face thereof and paste the antenna pattern  11  to the adhesive layer  17 ; 
         [0018]    Fourthly, referring back to  FIG. 1 , provide a plastic film  15  attached to a second face of the ferrite plate  14 , and provide a double-faced adhesive tape  16  attached to the antenna pattern  11 . 
         [0019]    Referring to  FIGS. 4 and 5 , in another embodiment, an adhesive tape  12  is used to replace the adhesive layer described in the forth-mentioned embodiment. The antenna pattern  11  is pasted to the adhesive tape  12 , then the adhesive tape  12  is pasted to the first face of the ferrite plate  14  with the antenna pattern  11  disposed between the adhesive tape  12  and the ferrite plate  14 . A plastic film  15  is provided to be attached to the second face of the ferrite plate  14 , and a double-faced adhesive tape  16  is attached to the antenna pattern  11 . 
         [0020]    The thickness of the wire  11   a  could be reduced by 50%-80% after being stamped by the stamping tool  18 . Therefore, the thickness of the antenna pattern  11  is only 0.07 mm due to the wire  11   a  has a diameter of 0.3 mm 
         [0021]    The antenna according to the present disclosure has an antenna pattern with a thickness of only 0.07 millimeters which is much smaller than the one made from FPCB. Otherwise, the method is easy for mass production and the cost thereof is accordingly cut down. In addition, the antenna made by the above-mentioned processes has a stable structure and good flexibility. 
         [0022]    In another alternative embodiment, the wire  11   a  is made from silver or gold, and the antenna pattern is made by cutting a metallic plate. 
         [0023]    It will be understood that the above-mentioned particular embodiments is shown and described by way of illustration only. The principles and the features of the present disclosure may be employed in various and numerous embodiments thereof without departing from the scope of the disclosure as claimed. The above-described embodiments illustrate the scope of the disclosure but do not restrict the scope of the disclosure.