提出了一种基于2.4GHz/900MHz双射频蓝牙模块的研究与实现方案。该方法通过双射频通信模式来解决短距离无线通信中日益严重的共扰问题,为之提出了全新的解决思路。在不改变蓝牙基带协议的基础上,增加蓝牙900MHz射频模块,使得蓝牙设备的射频部分可在2.4GHz或900MHz的ISM频段间切换。实验结果表明,对于双射频的蓝牙系统来说,其不仅改善了与其他无线通信方式的相互干扰问题,而且还从蓝牙通信距离方面得到了改进。 A research and implementation scheme based on 2.4GHz / 900MHz dual-radio Bluetooth module is proposed. The method solves the problem of increasingly serious co-interference in short-range wireless communication by using a dual radio frequency communication mode, and provides a completely new solution to the problem. Without changing the Bluetooth baseband protocol, based on the increase of Bluetooth 900MHz RF module, making the RF part of the Bluetooth device can switch between the 2.4GHz or 900MHz ISM band. The experimental results show that the dual-radio Bluetooth system not only improves the mutual interference with other wireless communication methods, but also improves the Bluetooth communication distance.