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Title: A bandpass sigma-delta modulator employing micro-mechanical resonator
Authors: Wang, X.
Xu, Y.P. 
Wang, Z.
Liw, S.
Sun, W.H.
Tan, L.S.
Issue Date: 2003
Citation: Wang, X.,Xu, Y.P.,Wang, Z.,Liw, S.,Sun, W.H.,Tan, L.S. (2003). A bandpass sigma-delta modulator employing micro-mechanical resonator. Proceedings - IEEE International Symposium on Circuits and Systems 1 : I1041-I1044. ScholarBank@NUS Repository.
Abstract: A new second-order bandpass Sigma-delta modulator employing micro-mechanical resonator is presented. The micro-mechanical resonator is used to replace its electronic counterpart for its high Q value. The design is based on the pulse-invariant transform and multi-feedback technique. A compensation circuit is proposed to cancel the anti-resonance in the micro-mechanical resonator in order to obtain the desired transfer function. The modulator is implemented in a 0.6-μm CMOS process with an external clamped-clamped beam micro-mechanical resonator. Simulation shows that a 47-dB dynamic range can be achieved in a 200-KHz bandwidth centered at 8 MHz when sampled at 32 MHz.
Source Title: Proceedings - IEEE International Symposium on Circuits and Systems
ISSN: 02714310
Appears in Collections:Staff Publications

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