摘要
有线电视信号通常以广播方式传送,而且其频带宽,信号易于耦合,一般电路很难对其进行隔离,或关断不彻底。为了解决该信号只对某些教室或场所进行定点广播,而对其他教室信号进行关断的矛盾。本文利用PIN二极管具有宽带工作能力的特性,设计出在有线电视信号环境下的开关控制电路。经检测,该电路能较好地解决有线电视信号的开关,具有很好的开关特性,为有线电视信号的电子隔离提供了一种解决方案。
CableTV signal always conveies mode with broadcast, and frequency bandwidth, coupling good. The circuit is difficult with isolating the signal, shutoff is halfway. To resolve the problem that cableTV signal conveies with fixedpoint. Utilizing of the PIN diode characteristic, we design the switching control circuit. The circuit has good switching characteristic, and it can provide a solution for cableTV signal isolating.
出处
《电子测试》
2008年第1期78-80,85,共4页
Electronic Test
