New Wideband Cascaded ΣΔ Modulator for Multimode Wireless Receiver

IEICE Electronics Express

Lan-Long Dung¹  Teng-Hung Chang¹ 

[1] Department of Electrical and Control Engineering, National Chiao Tung University

关键词: sigma-delta modulator;    analog-to-digital conversion;    multimode receivers;    wideband;    MASH;   

DOI  :  10.1587/elex.1.57

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(5)Cited-By(1)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.

【 授权许可】

Unknown