Recent content by taoz

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    Convert dB/m to /m for Microwave Input Impedance Calculation

    I found the unit of attenuation constant is nepers/meter and nepers also don't have any unit, just neper=10ln(P2/P1) and dBm also don't have any unit. the problem was solved! thanks!
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    Please solve the decibel problem

    10dB+10dB=20dB 10dB+1dB=11dB ?? 10dBm+10dB=20dBm 10dBm+1dB=11dBm ?? Is all correct? and what is the difference with dB+dB and dBm+dB?
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    Convert dB/m to /m for Microwave Input Impedance Calculation

    in Wikipedia, https://www.physicsforums.com/wiki/Attenuation constants, in fields such as https://www.physicsforums.com/wiki/Optical_fiber communication and https://www.physicsforums.com/wiki/Radio_propagation https://www.physicsforums.com/wiki/Path_loss , are often expressed as a...
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    Convert dB/m to /m for Microwave Input Impedance Calculation

    I want to get a input impedance from microwave. if the attanuation constant is 0.13, the value is 0.13dB/m. for get the Zin, the dB have to disappear. 0.13dB=10log(X) 0.013dB=log(X) 10^(0.013)dB=X ?? I don't sure about this solution. please help me! google didn't help me.