The output signals are unequal in amplitude. The larger signal is at the main-line output port. The smaller signal is at the coupled port. The main-line insertion loss depends upon the signal level at ...
A directional coupler is used to sample a small amount of input signal power for measurement purposes. Port 1 is the input port; port 2 is the output port; port 3 is the coupled port; port 4 is the ...
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