Title :
A reduced complexity 3rd order digital delta-sigma modulator for fractional-N frequency synthesis
Author :
Dehghani, R. ; Atarodi, S.M. ; Bornoosh, B. ; Kusha, A. Afzali
Author_Institution :
Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran
Abstract :
A reduced complexity third-order digital delta-sigma modulator is presented. The modulator consists of two cascaded sections to produce proper shaping of quantization noise with minimum hardware. A new architecture for a digital third-order delta-sigma modulator based on Ritchie structure is proposed. The measurement results show 94 dB SNR and 65% dynamic range.
Keywords :
circuit complexity; delta-sigma modulation; frequency synthesizers; modulators; noise; quantisation (signal); 3rd order digital delta sigma modulator; 94 dB; Ritchie structure; SNR; fractional-N frequency synthesis; quantization noise; reduced complexity; signal-to-noise ratio; Delta-sigma modulation; Frequency synthesizers; Low-frequency noise; Noise shaping; Phase frequency detector; Quantization; Signal to noise ratio; Topology; Very large scale integration; Voltage-controlled oscillators;
Conference_Titel :
VLSI Design, 2004. Proceedings. 17th International Conference on
Print_ISBN :
0-7695-2072-3
DOI :
10.1109/ICVD.2004.1260986
