Title :
A High-precision S? Modulator for Real-time Signal Processing System
Author :
Zhu-ping, Wang ; Shun-an, Zhong ; Dan-dan, Nie ; Xiao-qing, Wang
Author_Institution :
Sch. of Inf. & Electron., Beijing Inst. of Technol., Beijing, China
Abstract :
A high-precision ΣΔ modulator was designed for real-time signal processing of MEMS-based micro air vehicle. Reasonable switch timing, optimum switch size, simple two-stage op-amp structure and sub-threshold technologies were used in the modulator to improve the precision and decrease the power and area. The results of simulation show a SNR of 109dB and a power of 4.653 mW.
Keywords :
aircraft; micromechanical devices; operational amplifiers; real-time systems; sigma-delta modulation; signal processing; MEMS-based micro air vehicle; SNR; high-precision ΣΔ modulator; optimum switch size; real-time signal processing system; reasonable switch timing; sub-threshold technology; two-stage op-amp structure; Capacitors; Clocks; Modulation; Real time systems; Switches; Switching circuits; S? modulator; high precision; low power; micro air vehicle; real-time signal processing system;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6880-5
DOI :
10.1109/iCECE.2010.25
