User's Manual

circuit and lumped elements in the design.
The coupler is a printed circuit “micro-strip” component with a nominal coupling of 30 dB and a minimum
directivity of 15dB. The coupler is used to sample the transmitted signal and detect any reflected signals
due to load mismatches. Both the forward and reflected signals are further attenuated by 10dB and are
converted to video signals before being passed to the Modulator CCA. Both the forward and reflected
detectors have about 25dB of linearity.