Title :
Feed-forward compensated high switching speed digital phase-locked loop frequency synthesizer
Author :
Benyong Zhang ; Allen, Phillip
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
Traditional feedback-controlled digital phase-locked loop (DPLL) based frequency synthesizers suffer from the tradeoff between output phase noise and dynamic response of the loop. In this paper, feedforward compensation combined with feedback regulation is utilized to achieve a high switching speed and a low phase noise for narrow bandwidth digital phase-locked loop (DPLL). Simulation results demonstrate the efficacy of this method
Keywords :
compensation; digital phase locked loops; feedforward; frequency synthesizers; phase noise; circuit simulation; digital phase-locked loop; dynamic response; feedback control; feedforward compensation; frequency synthesizer; phase noise; switching speed; Band pass filters; Bandwidth; Feedforward systems; Frequency conversion; Frequency synthesizers; Noise shaping; Phase locked loops; Phase noise; System performance; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.780019
