VSWR table of return loss vs. voltage standing wave ratio RETURN LOSS VSWR (dB) 46.064 40.086 36.607 34.151 32.256 30.714 29.417 28.299 27.318 26.444 25.658 24.943 24.289 23.686 23.127 22.607 22.120 21.664 21.234 20.828 20.443 20.079 19.732 19.401 19.085 18.783 18.493 18.216 17.949 17.690 17.445 ...
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 ...
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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。
It is often necessary to convert between VSWR and return loss - this can be done using simple formulas or a table provided here.
It varies from +1 to infinite. 以下摘自:http://www.mscbsc.com/askpro/question87979 回波损耗RL 它是反射系数的倒数,以分贝表示。 RL的值在0dB到无穷大之间,回波损耗越小表示匹配越差,反之则匹配越好。 0dB表示全反射,无穷大表示完全匹配。 在移动通信中,一般要求回波损耗大于14dB(对应VSWR=1.5)。
VSWR(dB)(dB)Coeff(%)(%) ReturnTrans.Volt.PowerPower LossLossReflTransRefl VSWR(dB)(dB)Coeff(%)(%) 1.00—.000.00100.0.0 1.0146.1.000.00100.0.0 1.0240.1.000.01100.0.0 1.0336.6.001.01100.0.0 1.0434.2.002.02100.0.0 1.0532.3.003.0299.9.1 ...
Return Loss & VSWR Table Return Loss in dB What It Means VSWR Number 0 dB 100% reflection, no power into the antenna, all reflected back Infinite 1 dB 80% reflection, 20% power into the antenna 17 2 dB 63% reflection, 37% power into the antenna ...
VSWR-Returnloss VSWR,Return Loss and Transmission Loss vs.Transmitted Power Return Trans.Volt.Power Power Return Trans.Volt.Power Power Loss Loss Refl Trans Refl Loss Loss Refl Trans Refl VSWR(dB)(dB)Coeff(%)(%)VSWR(dB)(dB)Coeff(%)(%)1.00—.000.00100.0.0 1.641 2.3.263.249 4...