ifrah.jaffri
Newbie level 2
I am trying to understand how the thermal noise floor adds up after a combiner. I am first dividing the input signal into 0 degrees and 90 degrees by hybrid-90. Does the noise floor should also be divided as 0 degrees and 90 degrees phase difference at the two output of hybrid 90?
and then the two paths are added using a combiner. Should the noise at the output of combiner be a 3dB addition or should remain same? I am getting same noise floor at the output and I don't know why?
Any comments are welcome.
and then the two paths are added using a combiner. Should the noise at the output of combiner be a 3dB addition or should remain same? I am getting same noise floor at the output and I don't know why?
Any comments are welcome.