A novel two-channel time-interleaved second-order ΣΔ modulator
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概要
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To alleviate the folded noise caused by coefficient mismatches between the two channels of two-channel time-interleaved (TI) ΣΔ modulators and simplify the circuit of the modulators, a novel two-channel TI second-order ΣΔ modulator is proposed. A new type of noise transfer function (NTF) which is a band-pass filter is adopted for the modulator to reduce the folded noise. The simulation results show that this two-channel TI second-order ΣΔ modulator is insensitive to channel mismatches. Moreover, the modulator only needs three operation amplifiers.
著者
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Yang Xiao
School Of Electrical And Electronic Engineering Nanyang Technological University
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Chen Guican
School Of Electronic And Information Engineering Xi'an Jiaotong University
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Chen Guican
School of Electronics and Information Engineering, Xi'an Jiaotong University
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