越南文翻譯
= 20log [(VSWR+1)/(VSWR-1)]dB
(dB)
![Impedance (Z) to reflection coefficient (gamma) conversion equation](http://www.rfcafe.com/references/electrical/images/Magnitude%20Gamma.jpg)
100.0
|
|
電壓反射係數 Note: VSWR values were used to calculate the other two related values (rounded to 3 significant places)
99.5
|
(℅) 例 VSWR=1.15 RL=23.1 Reflection coefficient=0.07 RL =20log(1/0.07) Voltage Standing Wave Ratio
![Reflection coefficient (gamma) to VSWR to conversion equation](http://www.rfcafe.com/references/electrical/images/VSWR.jpg)
.00 .00 功率反射
|
|
|
|
(COEFF)
|
=23.1 dB
|
http://cgi.www.telestrian.co.uk/cgi-bin/www.telestrian.co.uk/vswr.pl 傳輸功率
傳輸消耗 (℅)
![VSWR to reflection coefficient (gamma) conversion equation](http://www.rfcafe.com/references/electrical/images/Magnitude%20Gamma2.jpg)
駐波比
Return Loss RL=1/0.7=1.4286
![VSWR](http://www.interfacebus.com/VSWR_Table.jpg)
|
|
.0
Return Loss |
Voltage Standing Wave Ratio |
Reflection Coefficient |
.000
|
|
|
RL (dB) |
VSWR |
G |
|
RL (dB) |
VSWR |
G |
|
RL (dB) |
VSWR |
G |
|
RL (dB) |
VSWR |
G |
46.1 |
1.01 |
0.00498 |
|
25.7 |
1.11 |
0.0521 |
|
18.0 |
1.29 |
0.126 |
|
8.0 |
2.32 |
0.398 |
40.1 |
1.02 |
0.00990 |
|
24.9 |
1.12 |
0.0566 |
|
17.0 |
1.33 |
0.141 |
|
7.0 |
2.61 |
0.447 |
36.6 |
1.03 |
0.0148 |
|
24.3 |
1.13 |
0.0610 |
|
16.0 |
1.38 |
0.158 |
|
6.0 |
3.01 |
0.501 |
34.1 |
1.04 |
0.0196 |
|
23.7 |
1.14 |
0.0654 |
|
15.0 |
1.43 |
0.178 |
|
5.0 |
3.57 |
0.562 |
32.3 |
1.05 |
0.0244 |
|
23.1 |
1.15 |
0.0698 |
|
14.0 |
1.50 |
0.200 |
|
4.0 |
4.42 |
0.631 |
30.7 |
1.06 |
0.0291 |
|
22.6 |
1.16 |
0.0783 |
|
13.0 |
1.58 |
0.224 |
|
3.0 |
5.85 |
0.708 |
29.4 |
1.07 |
0.0338 |
|
21.7 |
1.18 |
0.0826 |
|
12.0 |
1.67 |
0.251 |
|
2.0 |
8.72 |
0.794 |
28.3 |
1.08 |
0.0385 |
|
20.8 |
1.20 |
0.0909 |
|
11.0 |
1.78 |
0.282 |
|
1.0 |
17.4 |
0.891 |
27.3 |
1.09 |
0.0431 |
|
20.0 |
1.22 |
0.100 |
|
10.0 |
1.92 |
0.316 |
|
0.5 |
34.8 |
0.944 |
26.4 |
1.10 |
0.0476 |
|
19.0 |
1.25 |
0.112 |
|
9.0 |
2.10 |
0.355 |
|
0.0 |
Infinity |
1.00 |
|
VSWR翻譯為電壓駐波比(Voltage Standing Wave Ratio),一般簡稱駐波比 翻譯社 電磁波從甲介質傳導到乙介質,會由於介質不同 翻譯公司電磁波 翻譯能量會有一部分被反射,從而在甲區域形成「行駐波」 翻譯社 電壓駐波比,指的就是行駐波的電壓峰值與電壓谷值之比,此值可以通過反射係數的模值計較:VSWR=(1+反射係數模值)/(1-反射係數模值)。 而入射波能量與反射波能量 翻譯比值為 1:(反射係數模的平方)從能量傳輸 翻譯角度斟酌, 抱負的VSWR為 1:1 ,即此時為行波傳速狀態,在傳輸線中,稱為阻抗匹配;最差時VSWR無限大,此時反射係數模為1,為純駐波狀態,稱為全反射,沒有能量傳輸。 由上可知,駐波比越大,反射功率越高,傳輸效率越低。
VSWR =(1+|K| )/( 1-|K| )= R / r = Vmax / Vmin
sSF434250。-> 翻譯社|,-> 翻譯公司|的-> 翻譯中國電子頂級開辟網----電子設計討論、電子工程師blog、超人氣的電子工程師資料分享平台,ki8h1k�n"tVg 援用: http://www.rfcafe.com/references/electrical/vswr.htm
|
|
|
VSWR to return loss conversion 線上轉換
|
RL = 10log(入射功率/反射功率)
|
|
.07 .5 1.00
|
VSWR= (1+0.07)/(1-0.07) = 20log(1 / K)dB Reflection coefficient K=0.07
|
.021 ![VSWR to return loss to conversion equation](http://www.rfcafe.com/references/electrical/images/Return%20Loss2.jpg)
(dB) VSWR=(10^(23.1/20)+1)/ (10^(23.1/20)-1)
=20log[(1.15+1)/(1.15-1)]
反射係數K =(R-r)/(R+r),此中R為輸出阻抗,r為輸入阻抗V&M~uo 1.15
|
23.1
|
|
反射損耗
|
來自: http://blog.xuite.net/chenni037/food/28873618-VSWR++Return+Loss+%E8%BD%89%E6%8F%9B%E5%85%AC%E5%BC%8F有關翻譯的問題歡迎諮詢萬國翻譯社
danielbp166 發表在 痞客邦 留言(0) 人氣()
|