Weak signal quadrature phase quantizer

An experimental investigation of a parametric generator with phaseshift- keyed pumping, which produces binary phase quantization of the weak synchronous signal in two orthogonal channels, is described. It is shown that for signal/noise ratios very much less than unity the value of the ratio of the signals ∆1/∆2 in the first and second channels with the same sampling size is determined only by the phase of the quantized signal φ_c.