| 摘要 |
A five-band Bluetooth built-in antenna and its mobile communication terminal provide bandwidth for communication. A built-in antenna comprises an antenna radiation unit and a first slot, a second slot and a third slot; Slots are added to approach a center frequency of a low-frequency branch part of the antenna so that the antenna generates resonance, so the low-frequency bandwidth of the antenna is increased. A high-frequency part of the antenna generates resonance by means of capacitive coupling
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