Digital phase shift amplification and detection system and method

Abstract

A digital phase shift amplification and detection system and method. A signal is applied to a digital phase shift amplifier including a flip flop operated in the metastable region which amplifies any timing changes in the signal. The amplified signal is fed into a detection circuit configured to detect timing delays in the amplified signal. In one embodiment, the present invention relates to a digital phase shift amplification and detection system and method. A signal is applied to a digital phase shift amplifier including a flip flop operated in the metastable region which amplifies any timing changes in the signal. The amplified signal is fed into a detection circuit configured to detect the amplified timing differences in the amplified signal as a result of a relatively smaller timing change in an input signal. The detection circuit is coupled to clock signals that are out of phase with the clock signal that triggers the metastable flip flop in the phase shift amplifier. The amount of phase shift between the clock signals impacts the position of nominal times in the metastable region. In addition, the greater the number of flip flops in the detection circuit that are coupled to clock signals that trigger the flip flop at a different time from any other flip flop in the detection unit, the greater the ability to differentiate and proportional sensitivity the present embodiment has to small timing differences in an input signal.