利索-全球专利检索

  1. 登录
  2. 注册
发明公开
EP2237419A1 Transceiver for single ended communication with low EMI 有权
Eefluss电子邮件

Transceiver for single ended communication with low EMI
摘要：
A cable driver (301) for driving a single ended transmission medium such as a coaxial cable (115) comprising a core (120) and a shield (121) comprises a differential driver (104, 377) comprising a first output (151) for putting a first signal to the core (120) of the single ended transmission medium (115), a second output (152) for putting a second signal to the shield (121) of the single ended transmission medium (115) through a termination resistor (118) having an impedance close to the characteristic impedance (Z 0 ) of the single ended transmission medium (115), and a third output (153) for putting a transmit ground supply signal (GNDT), local to the differential driver, to the shield (121) of the single ended transmission medium (115) through a first high frequency low impedance path (112). In use, the current through the third output (153) will be substantially the inverse of the common mode current through the first and second outputs (151, 152). Hence both the common mode current and its inverse are provided to the single ended transmission medium (115). They cancel each other out and thus advantageously low EMI emissions occur.
摘要（中）：

用于驱动单端传输介质（例如同轴电缆）的电缆驱动器（301）包括一芯体（120）和一屏蔽层（121），该差动驱动器包括一第一输出端（151） 将第一信号提供给单端传输介质（115）的核心（120），第二输出端（152），用于通过终端电阻器将第二信号施加到单端传输介质（115）的屏蔽层（121） （118），具有接近单端传输介质（115）的特性阻抗（Z 0）的阻抗;以及第三输出（153），用于将位于差分驱动器本地的发送接地电源信号（GNDT） 通过第一高频低阻抗路径（112），单端传输介质（115）的屏蔽（121）。 在使用中，通过第三输出（153）的电流将基本上是通过第一和第二输出（151,152）的共模电流的倒数。 因此，共模电流及其反相都提供给单端传输介质（115）。 它们彼此抵消，从而有利地发生低EMI辐射。

公开/授权文献
信息查询
Global Dossier Espacenet
0/0