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标题: 请会做微波设计的各位看看 [查看完整版帖子] [打印本页]

时间: 2008-1-3 10:05

作者: liangkefan 标题: 请会做微波设计的各位看看

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></col><col width="125" style="WIDTH: 94pt; mso-width-source: userset; mso-width-alt: 4000;"></col><col></col><col width="153" style="WIDTH: 115pt; mso-width-source: userset; mso-width-alt: 4896;"></col><col></col><col width="66" style="WIDTH: 50pt; mso-width-source: userset; mso-width-alt: 2112;"></col><col></col><col width="62" style="WIDTH: 47pt; mso-width-source: userset; mso-width-alt: 1984;"></col><col></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-COLOR: #ece9d8; WIDTH: 94pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">        地形</td><td class="xl28" width="153" style="BORDER-TOP: windowtext 1pt solid; BORDER-LEFT-COLOR: #ece9d8; WIDTH: 115pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8;">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-COLOR: 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-LEFT: windowtext 1pt solid; WIDTH: 53pt; BORDER-TOP-COLOR: #ece9d8; 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-LEFT-COLOR: #ece9d8; WIDTH: 94pt; BORDER-TOP-COLOR: #ece9d8; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">山区</td><td class="xl29" width="153" style="BORDER-LEFT-COLOR: #ece9d8; WIDTH: 115pt; BORDER-TOP-COLOR: #ece9d8; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8;">1.072×10-2</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">1</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-LEFT-COLOR: windowtext; BORDER-TOP-COLOR: 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-LEFT: windowtext 1pt solid; WIDTH: 53pt; BORDER-TOP-COLOR: #ece9d8; 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-LEFT-COLOR: #ece9d8; WIDTH: 94pt; BORDER-TOP-COLOR: #ece9d8; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">丘陵</td><td class="xl29" width="153" style="BORDER-LEFT-COLOR: #ece9d8; WIDTH: 115pt; BORDER-TOP-COLOR: #ece9d8; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8;">2.75 ×10-3</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">1</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-LEFT-COLOR: windowtext; BORDER-TOP-COLOR: 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-LEFT: windowtext 1pt solid; WIDTH: 53pt; BORDER-TOP-COLOR: #ece9d8; 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-LEFT-COLOR: #ece9d8; WIDTH: 94pt; BORDER-TOP-COLOR: #ece9d8; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">平原</td><td class="xl29" width="153" style="BORDER-LEFT-COLOR: #ece9d8; WIDTH: 115pt; BORDER-TOP-COLOR: #ece9d8; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8;">2.884 ×10-3</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">1</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-LEFT-COLOR: windowtext; BORDER-TOP-COLOR: 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-LEFT: windowtext 1pt solid; WIDTH: 53pt; BORDER-TOP-COLOR: #ece9d8; 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-LEFT-COLOR: #ece9d8; WIDTH: 94pt; BORDER-TOP-COLOR: #ece9d8; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">沼泽湖泊海面</td><td class="xl29" width="153" style="BORDER-LEFT-COLOR: #ece9d8; WIDTH: 115pt; BORDER-TOP-COLOR: #ece9d8; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8;">2.63 ×10-4</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent;">1</td><td class="xl30" align="right" style="BORDER-RIGHT: windowtext 1pt solid; BORDER-LEFT-COLOR: windowtext; BORDER-TOP-COLOR: 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></col><col span="2" width="189" style="WIDTH: 142pt; mso-width-source: userset; mso-width-alt: 6048;"></col><col></col><col width="89" style="WIDTH: 67pt; mso-width-source: userset; mso-width-alt: 2848;"></col><col></col><col width="81" style="WIDTH: 61pt; mso-width-source: userset; mso-width-alt: 2592;"></col><col></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-COLOR: 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-COLOR: 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-COLOR: 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-COLOR: 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-LEFT: windowtext 0.5pt solid; WIDTH: 195pt; BORDER-TOP-COLOR: windowtext; 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-LEFT-COLOR: windowtext; WIDTH: 142pt; BORDER-TOP-COLOR: windowtext; 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-LEFT-COLOR: windowtext; WIDTH: 142pt; BORDER-TOP-COLOR: windowtext; 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-LEFT-COLOR: windowtext; WIDTH: 67pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">1</td><td class="xl23" width="81" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 61pt; BORDER-TOP-COLOR: windowtext; 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-LEFT: windowtext 0.5pt solid; WIDTH: 195pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 14.25pt; BACKGROUND-COLOR: lime;">***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-LEFT-COLOR: windowtext; WIDTH: 142pt; BORDER-TOP-COLOR: windowtext; 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-LEFT-COLOR: windowtext; WIDTH: 142pt; BORDER-TOP-COLOR: windowtext; 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-LEFT-COLOR: windowtext; WIDTH: 67pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">1</td><td class="xl23" width="81" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 61pt; BORDER-TOP-COLOR: windowtext; 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-LEFT: windowtext 0.5pt solid; WIDTH: 195pt; BORDER-TOP-COLOR: windowtext; 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-LEFT-COLOR: windowtext; WIDTH: 142pt; BORDER-TOP-COLOR: windowtext; 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-LEFT-COLOR: windowtext; WIDTH: 142pt; BORDER-TOP-COLOR: windowtext; 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-LEFT-COLOR: windowtext; WIDTH: 67pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">1</td><td class="xl23" width="81" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 61pt; BORDER-TOP-COLOR: windowtext; 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-LEFT: windowtext 0.5pt solid; WIDTH: 195pt; BORDER-TOP-COLOR: windowtext; 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-LEFT-COLOR: windowtext; WIDTH: 142pt; BORDER-TOP-COLOR: windowtext; 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-LEFT-COLOR: windowtext; WIDTH: 142pt; BORDER-TOP-COLOR: windowtext; 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-LEFT-COLOR: windowtext; WIDTH: 67pt; BORDER-TOP-COLOR: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: lime;">1</td><td class="xl23" width="81" style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-LEFT-COLOR: windowtext; WIDTH: 61pt; BORDER-TOP-COLOR: windowtext; 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！

时间: 2008-1-3 10:17

作者: dem.hunter

我也来学习学习

时间: 2008-1-3 11:04

作者: smbaikal

希望有高手上来指点一下

时间: 2008-1-3 11:14

作者: wm544822

楼主是不是已经是第二次求助了以前好象看到过不知道是不是楼主发的

时间: 2008-1-3 11:16

作者: liangkefan

是的，是第二次。但是一直没有人回答，就换一个版问一下！

时间: 2008-1-3 12:00

作者: lily6189

bangding

时间: 2008-1-3 14:02

作者: shikuaiqian

是不是db和dbm之间的关系阿！我猜的可以去看看他的计算公式！

时间: 2008-1-3 15:08

作者: 想飞的胖子

其实我有点不明白你要问的是什么？1.07E-02=1.072×10-2           和前面那个不对应啊 是不是书本弄错了

时间: 2008-1-3 21:48

作者: liangkefan

是KQ因子的问题，上下两个表不一样。第二个表中的科学计数部分是我自己加的！

时间: 2008-1-7 13:02

作者: fm974

设计院主要为移动公司计划部服务

时间: 2008-1-15 08:45

作者: 风来疏竹

<span style="FONT-SIZE: 10.5pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-bidi-font-family: 'Times New Roman'; mso-hansi-font-family: Arial; mso-ascii-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">Ρ<span lang="EN-US" style="FONT-SIZE: 10.5pt; LINE-HEIGHT: 125%; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">0<span lang="EN-US" style="FONT-SIZE: 10.5pt; LINE-HEIGHT: 125%; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">=KQfBdc

时间: 2008-1-15 08:54

作者: 风来疏竹

应该是第一个表，第二个的出处是哪儿？应该是概率比值差异

[此贴子已经被作者于2008-1-15 8:55:12编辑过]

时间: 2008-1-21 22:44

作者: qiaozhi

如果没记错的话,后者计算出的结果单位是以%为单位的.

时间: 2008-1-22 13:07

作者: Allenrf

di yi ge

时间: 2008-4-4 20:36

作者: leeyl97

同意12楼的说法！

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