Sigma-delta modulator with passive bandpass loop filter

Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder

Reexamination Certificate

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Details

C341S155000

Reexamination Certificate

active

07006023

ABSTRACT:
Digitizing a signal includes sampling and holding an analog signal to yield a sampled signal, where the analog signal includes information. The sampled signal is filtered at a passive filter circuit to yield a filtered signal. The passive filter circuit includes at least one passive element and the filtered signal is characterized by a bandpass response. The filtered signal is quantized to yield a digital signal, where the digital signal corresponds to the analog signal and the digital signal includes the information.

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