如果SWR 值大于1, 则表示有一部分电波被反射回来,最终变成热量,使得馈线升温。 两者之间的关系:RL=20*log10[(VSWR+1)/(VSWR-1)] 驻波比 回波损耗(dB) 驻波比 回波损耗(dB) 1.01 46.064 1.26 18.783 1.02 40.086 1.27 18.493 1.03 36.607 1.28 18.216 1.04 34.151 1.29 17.949 1.05 32.256 1.30 17.6...
Return loss (RL) and Voltage Standing Wave Ratio (VSWR) are both measurements used to quantify efficiency of power transfer in radio frequency (RF) and Microwave systems. They are related but represent same information in different ways. Return Loss in dB: It is a measure of reflected power ...
A calculator designed to compute the VSWR, reflection coefficient, return loss and matching loss in a transmission line
VSWR: 1 Modifiable Calculated Results Return Loss (dB)Mismatch Loss (dB) Loss in %Reflection Coefficient VSWR Reduction using a matched attenuator (assuming a perfect 1:1 Attenuator) Attenuator (dB)Improved VSWR Definitions: VSWR (Voltage Standing Wave Ratio)is the measure of how efficiently RF ...
驻波比小于3,就是要求你的反射系数要小于1/2，也就是说你的功率损耗不能超过入射功率的25%，也就是说你的return loss要大于6db，return loss越大，你的信号反射的越少的，当然效率越高啦！好像工业上要求一般驻波比小于2的。
The VSWR/return loss calculator from Pasternack will find VSWR, return Loss, mismatch loss, and the reflection coefficient given any one of the listed input types. VSWR (voltage standing wave ratio, sometimes pronounced "viswar"), is the ratio of the max
在移动通信中,一般要求回波损耗大于14dB(对应VSWR=1.5)。 RL=10lg(入射功率/反射功率) 驻波比VSWR=(1+ 反射系数)/ (1- 反射系数) ,反射系数=反射波幅度/入射波幅度。 如果馈线接头良好:反射系数为0(无反射),如果接头最差反射系数为1(以上可从反射系数的式中可以看出) ...
This VSWR calculator will calculate return loss, mismatch loss, loss in percentage and the reflection coefficient. As an added bonus, the results are modifiable and can calculate the other values. VSWR (Voltage Standing Wave Ratio) is the measure of how efficiently RF power is transmitted and is...
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RETURN LOSS VSWR (dB) 13.842 13.708 13.577 13.449 13.324 13.201 13.081 12.964 12.849 12.736 12.625 12.518 12.412 12.308 12.207 12.107 12.009 11.913 11.818 11.725 11.634 11.545 11.457 11.370 11.285 11.202 11.120 11.039 10.960 10.881 10.804 10.729 10.654 10.581 10.509 10.437 10.367 10.298 10.230 10.163 ...