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I am using SystemVue (from keysight) software to simulate. I have a source which gives me a signal and source thermal noise which is -173dBm/Hz at room temperature. Now when I pass this through a hybrid 90. i am getting the same noise floor at two outputs, i.e., -173dBm/Hz and the signal is...
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...
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