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FCC认证中关于2.4G无线技术的测试说明

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A dipole antenna is a radio antenna that can be made of a simple wire, with a center-fed driven element. It consists of two metal conductors of rod or wire, oriented parallel and collinear with each other (in line with each other), with a small space between them. The radio frequency voltage is applied to the antenna at the center, between the two conductors. These antennas are the simplest practical antennas from a theoretical point of view. They are used alone as antennas, notably in traditional "rabbit ears" television antennas, and as the driven element in many other types of antennas, such as the Yagi. Dipole antennas were invented by German physicist Heinrich Hertz around 1886 in his pioneering experiments with radio waves.

随着信息技术的飞速发展和人们对高速率无线通讯的需求，无线应用产品的工作 频率已经从低频段跨入高频段。作为全球均无需授权即可使用的2.4 GHz ISM频 段成为众多无线高端产品首选频段，譬如蓝牙，WLAN，ZigBee等。博通集成 电路公司的2.4GHz无线收发器BK2421采用高达2Mbps的通讯速率和独特的通 讯协议，不但保持了 2.4 GHz 频段其他通讯协议优良的射频性能，而且简化了 产品设计，节省了产品开发成本，降低了产品功耗，是国内唯一一颗达到世界先 进水平的2.4GHz无线收发器。本文详细介绍了这一收发器产品性能和特点并在 最后给出了基于BK2421所完成的PC周边设备方案（包括无线鼠标键盘、无线 遥控等），汽车无线防盗和马达自动起动方案和移动支付RFID子系统方案。

A7121-笙科 2.4g 无线传输资料 2.4g 无线传输资料

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