资 源 简 介
PI，T滤波器匹配射频阻抗
滤波电路用于从信号中去除不想要的或不想要的成分。当耦合一个以上的信号或频带到/从天线，过滤器和匹配的阻抗，如PI滤波器和T滤波器的网络是在最后的连接从RF收发器到天线的桥梁。这些电路不仅通过一些乐队而歧视别人，他们也匹配阻抗和允许双工和循环电路提供全双工双向通信。当设计RF部分，很高兴知道我们有这些零件在我们的阿森纳。
本文将讨论如何将这些过滤器可以拒绝或传递频段符合特定的标准，以及那些允许多标准传输通过相同的路径。所有的零件，工具，和数据表中提到可以在网站找到的。
LimitaTIons of silicon
Physical constraints do not allow efficient full-range performance from monolithic silicon. Filters， attenuators， transmission lines， isolaTIon barriers， surge suppression， and more just cannot be done （at least not yet） as effecTIvely in silicon as they can when built up from other substrate materials at larger scales.
For example， we can make an on-chip dielectric insulator between sensiTIve stages on a single-chip die. But， as voltage spikes increase in amplitude， the properties of the silicon insulator just cannot take the higher voltages. Also， unless we insulate in three dimensions， arcing will occur at some point. This applies to surge suppression， too. There is only so much energy a small area can dissipate， absorb， or shunt.
