| 摘要 |
PURPOSE: An SDIO(Secure Digital Input and Output) modem is provided to protect an antenna performance form a bad influence which reduces the antenna performance by forming a first case as a metal material and a second case as a plastic mold. CONSTITUTION: A first case(10) and a second case(12) are combined each other. The first and the second case include an internal space. A PCB(Printed Circuit Board)(14), an SIP(Session Initiation Protocol) module(16), and an internal built-in antenna(18) are stored in the inner space. A case between the first case and the second case is formed by metal materials. Another case between the first case and the second case is formed by a plastic mold.
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