普通印刷电路板输电线路简介

摘要：在高频率(例如微波)印刷电路板(pcb)痕迹的物理尺寸成为波长的信号的比例。在这些频率，控制线用于移动信号周围印制电路板的阻抗传输。通过控制的阻抗和电气长度，我们可以轻松地预测及其行为的一种电路。

Maxim>AppNotes>GENERALENGINEERINGTOPICSPROTOTYPINGANDPCBOARDLAYOUTKeywords:IntroductiontoCommonPrintedCircuitTransmissionLinesJun02,2003APPLICATIONNOTE2093IntroductiontoCommonPrintedCircuitTransmissionLinesAbstract:Athighfrequencies(e.g.microwave)thephysicaldimensionsofprintedcircuitboard(PCB)tracesbecomesignificantrelativetothewavelengthofthesignal.Atthesefrequencies,controlledimpedancetransmissionlinesareusedtomovesignalsaroundaprintedcircuitboard.Bycontrollingtheimpedanceandelectricallengthwecaneasilypredictitsbehaviorinacircuit.Themostcommonlyusedtransmissionlines(striplineandmicrostripline)aren'ttheonlywaytotransmitasignalfromone