Patent Application
20130038497
The present disclosure relates to radio frequency identification technologies, and more specifically to an antenna and a method for manufacturing the antenna.
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.
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).
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'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.
Therefore, it is desirable to provide a new antenna and a new method which can overcome the above-mentioned problems.
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.
Referring to
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.
A method for manufacturing the antenna 1 described above comprises the processes which are described below.
Firstly, referring to
Secondly, stamp the wire 11a to a flat antenna pattern 11 by engaging the upper portion 18a and the lower portion 18b of the stamping tool 18;
Thirdly, referring to
Fourthly, referring back to
Referring to
The thickness of the wire 11a 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 11a has a diameter of 0.3 mm
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.
In another alternative embodiment, the wire 11a is made from silver or gold, and the antenna pattern is made by cutting a metallic plate.
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.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201110229755.5 | Aug 2011 | CN | national |
