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In this paper we present a MASH bandpass ΣΔ modulator for WCDMA applications. The signal bandwidth of the proposed modulator is 10 MHz, centered around an intermediate frequency (IF) of 70 MHz. Each ΣΔ modulator of the MASH structure is based on a two-path architecture, which allow us to obtain the desired in-band noise shaping zeros and reduce the power consumption. The ΣΔ modulator is implemented...
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