Continuous phase regenerative logic

THE PARAMETRIC DEGENERATIVE AMPLIFIER exhibits the property that its gain is maximum when the pump and the input signal phase have zero or π phase difference. This binary phase preference may be used to generate a binary code whose ONES and ZEROS are represented by a continuous sine wave, each distinguished by a phase reversal, This scheme is particularly attractive, because it allows a logical bit rate as high as held the frequency of the pump source. The circuit to be described performs logic at a 100-Mc rate using a pump frequency of 200 Mc.