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[我要提问] 请微波设计的高手看看 [复制链接]

liangkefan

军衔等级：

上士

注册：2007-1-17 点赞数

1

电梯直达

1^# 大中小

发表于 2007-12-25 10:01:00 |只看该作者 |倒序浏览

大家好，我从事微波工程设计3年了，主要用Pathloss软件。最近一直在研究如何通过笔算来做电路设计。在翻看相关资料的时候发现了一个问题，就是关于KQ因子的取值。有以下两种取法：<table cellspacing="0" cellpadding="0" width="477" border="0" style="WIDTH: 359pt; BORDER-COLLAPSE: collapse;"><colgroup><col width="71" style="WIDTH: 53pt; mso-width-source: userset; mso-width-alt: 2272;"></col><col width="125" style="WIDTH: 94pt; mso-width-source: userset; mso-width-alt: 4000;"></col><col width="153" style="WIDTH: 115pt; mso-width-source: userset; mso-width-alt: 4896;"></col><col width="66" style="WIDTH: 50pt; mso-width-source: userset; mso-width-alt: 2112;"></col><col width="62" style="WIDTH: 47pt; mso-width-source: userset; mso-width-alt: 1984;"></col></colgroup><tbody><tr height="23" style="HEIGHT: 17.25pt; mso-height-source: userset;"><td class="xl24" width="71" height="23" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; WIDTH: 53pt; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 17.25pt; BACKGROUND-COLOR: transparent;">序号</td><td class="xl25" width="125" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext 1pt solid; BORDER-LEFT: #ece9d8; WIDTH: 94pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">        地形</td><td class="xl28" width="153" style="BORDER-RIGHT: #ece9d8; BORDER-TOP: windowtext 1pt solid; BORDER-LEFT: #ece9d8; WIDTH: 115pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">KQ参数</td><td class="xl30" width="66" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; WIDTH: 50pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">  B参数</td><td class="xl30" width="62" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext 1pt solid; BORDER-LEFT: windowtext; WIDTH: 47pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">  C参数</td></tr><tr height="23" style="HEIGHT: 17.25pt; mso-height-source: userset;"><td class="xl26" width="71" height="23" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: windowtext 1pt solid; WIDTH: 53pt; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 17.25pt; BACKGROUND-COLOR: transparent;">1</td><td class="xl27" width="125" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; WIDTH: 94pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">山区</td><td class="xl29" width="153" style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; WIDTH: 115pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">1.072×10-2</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">1</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">1.3</td></tr><tr height="23" style="HEIGHT: 17.25pt; mso-height-source: userset;"><td class="xl26" width="71" height="23" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: windowtext 1pt solid; WIDTH: 53pt; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 17.25pt; BACKGROUND-COLOR: transparent;">2</td><td class="xl27" width="125" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; WIDTH: 94pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">丘陵</td><td class="xl29" width="153" style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; WIDTH: 115pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">2.75 ×10-3</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">1</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">1.8</td></tr><tr height="23" style="HEIGHT: 17.25pt; mso-height-source: userset;"><td class="xl26" width="71" height="23" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: windowtext 1pt solid; WIDTH: 53pt; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 17.25pt; BACKGROUND-COLOR: transparent;">3</td><td class="xl27" width="125" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; WIDTH: 94pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">平原</td><td class="xl29" width="153" style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; WIDTH: 115pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">2.884 ×10-3</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">1</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">2.2</td></tr><tr height="23" style="HEIGHT: 17.25pt; mso-height-source: userset;"><td class="xl26" width="71" height="23" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: windowtext 1pt solid; WIDTH: 53pt; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 17.25pt; BACKGROUND-COLOR: transparent;">4</td><td class="xl27" width="125" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; WIDTH: 94pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">沼泽湖泊海面</td><td class="xl29" width="153" style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; WIDTH: 115pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">2.63 ×10-4</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">1</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">3.2</td></tr></tbody></table><table cellspacing="0" cellpadding="0" width="808" border="0" style="WIDTH: 607pt; BORDER-COLLAPSE: collapse;"><colgroup><col width="260" style="WIDTH: 195pt; mso-width-source: userset; mso-width-alt: 8320;"></col><col span="2" width="189" style="WIDTH: 142pt; mso-width-source: userset; mso-width-alt: 6048;"></col><col width="89" style="WIDTH: 67pt; mso-width-source: userset; mso-width-alt: 2848;"></col><col width="81" style="WIDTH: 61pt; mso-width-source: userset; mso-width-alt: 2592;"></col></colgroup><tbody><tr height="19" style="HEIGHT: 14.25pt; mso-height-source: userset;"><td class="xl22" width="260" height="19" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 195pt; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 14.25pt; BACKGROUND-COLOR: lime;">地形</td><td class="xl23" width="189" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext 0.5pt solid; BORDER-LEFT: windowtext; WIDTH: 142pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">KQ</td><td class="xl23" width="189" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext 0.5pt solid; BORDER-LEFT: windowtext; WIDTH: 142pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">KQ</td><td class="xl23" width="89" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext 0.5pt solid; BORDER-LEFT: windowtext; WIDTH: 67pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">B</td><td class="xl23" width="81" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext 0.5pt solid; BORDER-LEFT: windowtext; WIDTH: 61pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">C</td></tr><tr height="19" style="HEIGHT: 14.25pt; mso-height-source: userset;"><td class="xl24" width="260" height="19" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 195pt; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 14.25pt; BACKGROUND-COLOR: lime;">高干燥山区(Re<0.5)</td><td class="xl25" width="189" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 142pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">1.072×10-4</td><td class="xl26" width="189" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 142pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">1.07E-02</td><td class="xl23" width="89" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 67pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">1</td><td class="xl23" width="81" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 61pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">1.3</td></tr><tr height="19" style="HEIGHT: 14.25pt; mso-height-source: userset;"><td class="xl24" width="260" height="19" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 195pt; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 14.25pt; BACKGROUND-COLOR: lime;">大陆温带及中纬度丘陵(0.5<Re<0.7)</td><td class="xl25" width="189" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 142pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">2.75×10-5</td><td class="xl26" width="189" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 142pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">2.75E-03</td><td class="xl23" width="89" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 67pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">1</td><td class="xl23" width="81" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 61pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">1.8</td></tr><tr height="19" style="HEIGHT: 14.25pt; mso-height-source: userset;"><td class="xl24" width="260" height="19" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 195pt; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 14.25pt; BACKGROUND-COLOR: lime;">温带沿海平原(Re>0.7)</td><td class="xl25" width="189" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 142pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">2.884×10-5</td><td class="xl26" width="189" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 142pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">2.88E-03</td><td class="xl23" width="89" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 67pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">1</td><td class="xl23" width="81" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 61pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">2.2</td></tr><tr height="19" style="HEIGHT: 14.25pt; mso-height-source: userset;"><td class="xl24" width="260" height="19" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 195pt; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 14.25pt; BACKGROUND-COLOR: lime;">跨海</td><td class="xl25" width="189" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 142pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">2.630×10-6</td><td class="xl26" width="189" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 142pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">2.63E-04</td><td class="xl23" width="89" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 67pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">1</td><td class="xl23" width="81" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; WIDTH: 61pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">3.2</td></tr></tbody></table>看到的计算公式则是一样的，所以不是很明白那个为正确，或者都正确但是计算公式有何不同，请各位了解的大虾给以指点。非常感谢！