微带线阻抗计算

1、打开APPCAD软件AgilEntI::卜AgilentTechnologiesWirelessSemiconductorAppUcat/ons■forRF,microwave,andwirelessapplication旨□u冈AppCAD一[AppCADIainlenu]DesignDataonthe'w'AgilEntI::卜AgilentTechnologiesWirelessSemiconductorAppUcat/ons■forRF,microwave,andwirelessapplication旨□u冈AppCAD一[AppCADIainlenu]DesignDataonthe'w'已h4*1aPart-to-MarketGuideFileOptiansHelp出ou「PersonalDesignAssIMa时.^.boutAppCADAgilentFlFSemiconductors垦ContactingAgilentCiicuitDesignActiveCircuitsPassiveCircuitsSignals-SystemsReliabilityEngrTools2、在左边选PASSIVECIRCUITS进入无源器件计算项。AgilentTechnologies口口口CoplanarWaveguideMicrostripStriplineParallelLine¥Ji『已匸1”已「XAppCAD-[AppCADIainlenu]BalunFileQpticmzHelp□AgilentCircuitDesignActiveCircuitsReliabilityAgilentTechnologies口口口CoplanarWaveguideMicrostripStriplineParallelLine¥Ji『已匸1”已「XAppCAD-[AppCADIainlenu]BalunFileQpticmzHelp□AgilentCircuitDesignActiveCircuitsReliabilityEngrToolsWirelessSemiconductorApp^catfons…yourPersonalDesignAsslstpmH■forI^FnnzTowave.and applictiHon弓PassiveCircuitsSignals-Systems3点选进入Microstrip微带线计算项（此计算项只是在不考虑地平面影响的情况下微带线的计算，实际当离微带线足够近铺地的话，对微带线的阻抗是有影响的，这个数据我们已经通过ADS仿真过了，当铺地距离微带线大于50mil时就不会产品影响。所以，用此微带线计算的阻抗在实际布板时是必须保证要在50mil以外才能铺地的条件。

3、在微带线计算项下需要对一下项进行设置。一、选定所用的板材的介电常数Er（如我们一般的是FR4）。二、输入工作频率Frequency三、输入计算时的单位LengthUnits四、输入铜皮的厚度T（一般的要是1OZ的厚度是0.035mm）五、输入板材的介质厚度H（注：此处的厚度不是整个电路板的尺寸，指的是微带线到其下一层地平面之间介质的厚度）输入以上项后点计算项CalculateZ0（F4）通过更改线宽使其阻抗Z0=50欧姆4带状线计算zo10.305—>ees日Vp-：-b7AppCAD一[StripLine]EaleCalculate tFsrajiet'ers^tions^elpNormalM*iMenui|F8]StriiplineDieledHriq:Sr=|Fre^ienc^;pFLengthUniH:ElecfLength1.DWavdenglhW/HEIbcILength■I®82|的455C0.108D4史 |fractionoFd=|4旳=r^~Clickfor