Digital transmission system with a double analog integrator...

Details Digital transmission system with a double analog integrator... Digital transmission system with a double analog integrator...

H - Electricity

04

B

354/69

H04B 14/06 (2006.01)

Patent

CA 1125917

ABSTRACT OF THE DISCLOSURE Delta-Sigma noise-shaping coder with two analog integrators and Delta-Sigma decoder with two digital integrators. The coder comprises an operational amplifier with two analog integrators in its feedback loop and two cascaded flipflops both connected to the input of the ope- rational amplifier through resistors having a predetermined ratio. The configuration of the integrators is particular and results of the iden- tification of the z-transfer function of the coder to be designed with the p-transfer function of a known integrator (p, Laplace's variable) The decoder comprises a digital integrator- filter of order two and two cascaded flipflops both connected to the input of the filter through amplifiers having gains in a predetermined ratio.

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