| 摘要 |
<p>A frequency-modulation (FM) antenna device is provided. The antenna device comprises a keypad, a metal bracket in the keypad, a connector, an FM antenna matching network and an FM receiving chip. The metal bracket in the keypad is used as the FM antenna for receiving FM signals. The connector is used for connecting the metal bracket with the feed end of the FM antenna matching network. The FM antenna matching network is connected with the connector by means of the feed end to enable the metal bracket to reach the resonance of the FM frequency band by adjusting the impedance of the metal bracket in the keypad. The FM receiving chip receives the FM signals transmitted from the metal bracket in the keypad and the FM antenna matching network. And an FM antenna implementation method and a mobile terminal are also disclosed. The antenna device saves cost of and internal space in the mobile terminal and implements external play function of FM radio.</p> |
