IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
New Wideband Cascaded ΣΔ Modulator for Multimode Wireless Receiver
Teng-Hung ChangLan-Long Dung
Author information
JOURNALS FREE ACCESS

2004 Volume 1 Issue 3 Pages 57-62

Details
Abstract

This work presents a cascaded fourth-order ΣΔ 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 ΣΔ modulator is approximately 80dB for four wireless standards.

Information related to the author
© 2004 by The Institute of Electronics, Information and Communication Engineers
Previous article Next article
feedback
Top