ruwan2
Member level 5
Hi,
Wikipedia has a definition of return loss:
RL=Pin/Pr
In dBm, log10(RL) = log10(Pin)-log10(Pr)
It also says that it is desired to be large for less refection.
I agree the above statement. From those remarks, both RL and log10(RL) should be positive.
But some IC, such as this one from MaximIC MAX2830:
https://datasheets.maximintegrated.com/en/ds/MAX2830.pdf
On page 11, it is negative.
How to understand the difference between them?
Thanks,
Wikipedia has a definition of return loss:
RL=Pin/Pr
In dBm, log10(RL) = log10(Pin)-log10(Pr)
It also says that it is desired to be large for less refection.
I agree the above statement. From those remarks, both RL and log10(RL) should be positive.
But some IC, such as this one from MaximIC MAX2830:
https://datasheets.maximintegrated.com/en/ds/MAX2830.pdf
On page 11, it is negative.
How to understand the difference between them?
Thanks,