Title :
A crystal-based digital ring oscillator
Author :
Abdollahi, S.R. ; Fakhraei, S.M. ; Bakkaloglu, B. ; Kamarei, M.
Author_Institution :
ECE Dept., Univ. of Tehran, Iran
Abstract :
A 0.16 mW, 2.3 Volt multi-channel digitally controlled oscillator (MDCO) core is designed in a 0.6 micron CMOS process and its prototype design is mapped on an Altera FPGA that can be used for clock recovery applications. This architecture is suitable for digital wireless and cable transceivers that use different bands for transmit and receive modes. As crystal-based-delay cells control its dominant propagation delay, we have obtained a reduced phase-noise in comparison to recently published analog-based DCOs.
Keywords :
digital phase locked loops; phase noise; transceivers; voltage-controlled oscillators; 0.16 mW; 2.3 V; Altera FPGA; CMOS process; MDCO design; analog based DCOs; complementary metal oxide semiconductor; crystal based delay cells control; crystal based digital ring oscillator; digital cable transceivers; digital wireless transceivers; field programmable gate array; multichannel digitally controlled oscillator design; propagation delay; reduced phase noise; Communication system control; Field programmable gate arrays; Frequency; Linearity; Phase locked loops; Propagation delay; Ring oscillators; Switches; Very large scale integration; Voltage-controlled oscillators;
Conference_Titel :
Field-Programmable Technology (FPT), 2003. Proceedings. 2003 IEEE International Conference on
Print_ISBN :
0-7803-8320-6
DOI :
10.1109/FPT.2003.1275767
