Try this. Have two sine wave sources operating at a common carrier frequency, the first being +A sin ( ) and the second one being -A sin( ). Ground one end of each source and connect the other end of each source to a special switch that connects one source at a time to a common output terminal but not the other. The common output to ground can be switched back and forth between +A sin ( ) and -A sin ( ), but never both at the same time. The common output is a BPSK signal switching back and forth between amplitude and phases of +A and -A. The selecting of each signal's output is controlled by the coordination of the control signal driving the switches. The common BPSK output is connected to the required Cadence circuit element.

Thank you so much Allen Sweet for your response. could you elaborate on the special switch? where can we get it? I am new to this cadence and I am trying to explore.