Reciprocal mixing question in double balance mixer.
时间：04-07
整理：3721RD
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Hi,
In receiver design, there is well known question, reciprocal mixing. The reciprocal mixing requirement is usually expressed as the interference product produced by reciprocal mixing is below or equal to the floor noise at the ouput when only the MDS(minimum detectable signal) is apply to the input.
So the constraint on LO phase noise is
PN=Sblock-MDS-10*log(BW)
from the above we can known that the interference produced by reciprocal mixing is equal to that: Sblock is applied to Lo, and PN is applied to RF input of mixer. I don't known why this is true?
thanks.
In receiver design, there is well known question, reciprocal mixing. The reciprocal mixing requirement is usually expressed as the interference product produced by reciprocal mixing is below or equal to the floor noise at the ouput when only the MDS(minimum detectable signal) is apply to the input.
So the constraint on LO phase noise is
PN=Sblock-MDS-10*log(BW)
from the above we can known that the interference produced by reciprocal mixing is equal to that: Sblock is applied to Lo, and PN is applied to RF input of mixer. I don't known why this is true?
thanks.
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