Title :
Fast Digital Coarse Tuning Loop for Wide-band Dual-loop Frequency Synthesizers
Author :
Liu, Junhua ; Liao, Huailin ; Yin, Jun ; Huang, Ru ; Zhang, Xing
Author_Institution :
Inst. of Microelectron., Peking Univ., Beijing
Abstract :
A new coarse tuning loop for wide-band dual-loop frequency synthesizer is presented in this paper. The proposed coarse tuning structure is composed of successive approximation register (SAR) and new structure frequency comparator. The frequency comparison error is analyzed and shows less comparison error compared with reported ones. This structure also reuses the programmable divider as a part of the coarse tuning loop and the circuit is greatly simplified
Keywords :
comparators (circuits); frequency synthesizers; programmable circuits; tuning; coarse tuning structure; digital coarse tuning loop; frequency comparator; programmable divider; successive approximation register; wideband dual-loop frequency synthesizers; CMOS technology; Circuit optimization; Frequency conversion; Frequency synthesizers; Phase locked loops; Switches; Tuning; Voltage control; Voltage-controlled oscillators; Wideband;
Conference_Titel :
Solid-State and Integrated Circuit Technology, 2006. ICSICT '06. 8th International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0160-7
Electronic_ISBN :
1-4244-0161-5
DOI :
10.1109/ICSICT.2006.306578
