New Wideband Cascaded ∑Δ Modulator for Multimode Wireless Receiver

Teng Hung Chang, Lan Long Dung

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


This work presents a cascaded fourth-order ∑Δ modulator for multimode baseband-frequency (BF) receiver. Each stage of the proposed modulator contains a resonator that introduces a pair of conjugate zeros to minimize the in-band noise, and furthermore provides optimum noise transfer functions for multimode receiver. The proposed modulator also features low distortion, swing suppression, and high dynamic range (DR). As the simulation results, the DR of our multimode cascaded ∑Δ modulator is approximately 80 dB for four wireless standards.

Original languageEnglish
Pages (from-to)57-62
Number of pages6
JournalIEICE Electronics Express
Issue number3
StatePublished - 2004


  • analog-to-digital conversion
  • MASH
  • multimode receivers
  • sigma-delta modulator
  • wideband

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