Title :
Modeling of a double-sampling switched-capacitor bandpass delta-sigma modulator for multi-standard applications
Author :
Chang, Hong ; Lu, Wenxian ; Cheng, Xu ; Guo, Yawei ; Zeng, Xiaoyang
Author_Institution :
State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai, China
Abstract :
This paper presents an improved non-ideal model of a switched-capacitor bandpass delta-sigma modulator with tunable resonators, noise-coupling and 4-bit quantizer. Considering operational amplifier non-ideal effect, clock jitter, noise, double-sampling and multi-bit quantizer capacitor mismatch effect, behavioral simulation in simulink shows that it provides 83.4dB, 67.5dB, 80.2dB, 41.0dB Signal-to-Noise-and-Distortion ratio (SNDR) and 84dB, 68dB, 80dB, 55dB dynamic range (DR) for GSM, WCDMA, TD-SCDMA and WLAN respectively.
Keywords :
band-pass filters; circuit noise; circuit simulation; circuit tuning; clocks; coupled circuits; delta-sigma modulation; jitter; operational amplifiers; switched capacitor networks; GSM; Simulink; TD-SCDMA; WCDMA; WLAN; behavioral simulation; clock jitter; double-sampling switched-capacitor bandpass delta-sigma modulator; dynamic range; multibit quantizer capacitor mismatch effect; multistandard application; noise figure 41 dB; noise figure 55 dB; noise figure 67.5 dB; noise figure 68 dB; noise figure 80 dB; noise figure 80.2 dB; noise figure 83.4 dB; noise figure 84 dB; noise-coupling; operational amplifier nonideal effect; signal-to-noise-and-distortion ratio; tunable resonator; word length 4 bit; Frequency modulation; GSM; Multiaccess communication; Resonant frequency; Spread spectrum communication; Switches; Wireless LAN;
Conference_Titel :
ASIC (ASICON), 2011 IEEE 9th International Conference on
Conference_Location :
Xiamen
Print_ISBN :
978-1-61284-192-2
Electronic_ISBN :
2162-7541
DOI :
10.1109/ASICON.2011.6157222
