Patent ID: 8390494

Claim:
A modulator system comprising: an integrator receiving an input signal summed with a first feedback signal; a quantizer receiving said input signal summed with an integrator output signal from said integrator, said quantizer outputting said first feedback signal to input of said integrator; a noise coupling branch feeding back a quantization noise between input and output of said quantizer, said noise coupling branch comprising specified delays, wherein feedback of said noise coupling branch is applied to said input of said quantizer; and a resonator path feeding back resonator path quantization noise to said quantizer; wherein said specified delays comprise a first-order delay and a second-order delay; wherein said noise coupling branch multiplies delayed quantization noise, wherein said first-order delay comprises a first-order noise coupling branch delay coefficient and said second-order delay comprises a second-order noise coupling branch delay coefficient; and wherein said resonator path multiplies delayed resonator path quantization noise, said resonator path comprising first-order resonator path delay, wherein said first-order resonant path delay comprises a first-order resonant path delay coefficient.