Patent Application
20120268348
1. Technical Field
The disclosure generally relates to antennas and a method of making the antennas.
2. Description of the Related Art
Electronic devices (e.g. mobile phone) may include a printed circuit board (PCB), an antenna, and other electronic components mounting on the PCB. The electronic components are usually electrically connected to the antenna by electrical connectors mounting on the PCB. However, the assembly of the electrical connectors to the PCB occupy substantial interior space of the electronic device.
Therefore, there is room for improvement within the art.
Many aspects of the exemplary antenna and method of making the antenna can be better understood with reference to the following drawings. The components in the various drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the exemplary antenna and method of making the antenna. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the diagrams.
The FIG is an assembled view of an exemplary antenna.
The FIG shows an exemplary antenna 20. The antenna includes a base body 22, an antenna radiator 24 and electronic components 26 (e.g. capacitors and resistors). The antenna radiator 24 may be formed on the base body 22 by laser direct structuring (LDS). The electronic components 26 are fixed to the antenna radiator 24 by surface mounting technology (SMT).
The base body 22 can be formed by injecting molding. Material of the base body 22 can be a mixture of materials consisting of thermoplastic, organic filling substances, and laser direct structuring material. The thermoplastic can be polyvinyl chloride, polyethylene terephthalate, acrylonitrile-butadiene-styrene, polycarbonate, polyimide, liquid crystal polymer, polyetherimide, polyphenylene sulfide, polysulfone, polystyrene, glycol-modified polyester, polypropylene, or any combination thereof. The base body 22, according to an exemplary embodiment, is polycarbonate. The organic filling substances can be silicic acid and/or silicic acid derivatives. The laser direct structuring material can be non-conductive spinel-based inorganic oxide, such as spinel type copper. The non-conductive oxide can be activated by laser to precipitate metallic crystal nuclei covering the base body 22.
The antenna radiator 24 is a plating layer formed on the base body 22. The antenna radiator 24 is made by selectively activating a portion of the base body 22 with a laser and plating the activated portion.
An exemplary embodiment of a method for making the antenna may include the following steps:
An injection molding machine is provided. The injection molding machine includes a molding chamber. The mixture is injected into the molding chamber to form the base body 22. A portion of the base body 22 is activated with a laser. The non-conductive oxide of the portion of the base body 22 is activated by the laser to precipitate metallic crystal nuclei covering the metal area of the base body 22. The metal area is conductive.
The metal area is plated to form the antenna radiator 24 using a plating process. The plating process can be an electro-plating or a chemical plating method to form the plating layer.
The electronic components 26 are fixed to the antenna radiator 24 by surface mounting technology (SMT).
By including the antenna radiator 24 and the electronic components 26, the antenna 10 can work as an active antenna. Additionally, the electronic components 26 can be directly connected to the antenna 10, saving interior space of the electronic device.
It is to be understood, however, that even through numerous characteristics and advantages of the exemplary disclosure have been set forth in the foregoing description, together with details of the system and function of the disclosure, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201110102005.1 | Apr 2011 | CN | national |
The present application is related to one co-pending U.S. Patent Application (Attorney Docket No. US39659), each entitled “ANTENNA AND METHOD OF MAKING SAME”, by Zhang et al. These applications have the same assignee as the present application and have been concurrently filed herewith. The above-identified applications are incorporated herein by reference.
