Title :
A 65-dB DR 1-MHz BW 110-MHz IF bandpass ΣΔ modulator employing electromechanical loop filter
Author :
Yu, Rui ; Xu, Yong Ping
Author_Institution :
Nat. Univ. of Singapore, Singapore
Abstract :
A 4th-order bandpass ΣΔ modulator employing electromechanical filter as loop filter is proposed. The electromechanical loop filter has the advantages of low power consumption and accurate center frequency without the need for tuning. The proposed bandpass SigmaDelta modulator is implemented in a 0.35-μm SiGe BiCMOS technology and tested with a 110-MHz SAW filter. When sampled at 440 MHz, the prototype chip achieves 65-dB DR and 60-dB peak SNDR in a 1-MHz signal bandwidth.
Keywords :
σ-δ modulation; BiCMOS integrated circuits; band-pass filters; electromechanical filters; surface acoustic wave filters; BiCMOS technology; IF bandpass ΣΔ modulator; SAW filter; SiGe; bandwidth 1 MHz; electromechanical loop filter; frequency 110 MHz; frequency 440 MHz; size 0.35 μm; Band pass filters; BiCMOS integrated circuits; Energy consumption; Frequency; Germanium silicon alloys; Prototypes; SAW filters; Silicon germanium; Testing; Tuning;
Conference_Titel :
Custom Integrated Circuits Conference, 2007. CICC '07. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-0786-6
Electronic_ISBN :
978-1-4244-1623-3
DOI :
10.1109/CICC.2007.4405714
