Title :
Injection-Locking Frequency Divider based dual-modulus prescalers with extended locking range
Author :
Jing Jin ; Bukun Pan ; Xiaoming Liu ; Jianjun Zhou
Author_Institution :
Center for Analog/RF Integrated Circuits (CARFIC), Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
A new Injection-Locking Frequency Divider (ILFD) based dual-modulus prescaler with extended locking range is presented in this paper. The tuning capacitor inserted into the ring oscillator loop can widen the common locking range of two operating modes of the prescaler. A dual-modulus prescaler using the proposed method is designed and simulated in a 65nm CMOS process. Simulation results show that the locking range of the divide-by-4/5, from 11.5 GHz to 19.1 GHz, is extended by more than 40 % compared with from 14 GHz to 19.4 GHz using the conventional design.
Keywords :
CMOS integrated circuits; field effect MMIC; frequency dividers; injection locked oscillators; microwave oscillators; CMOS process; dual modulus prescaler; extended locking range; frequency 11.5 GHz to 19.1 GHz; injection locking frequency divider; ring oscillator loop; size 65 nm; tuning capacitor; Capacitors; Frequency conversion; Phase locked loops; Power demand; Ring oscillators; Tuning;
Conference_Titel :
Circuits and Systems (ISCAS), 2014 IEEE International Symposium on
Conference_Location :
Melbourne VIC
Print_ISBN :
978-1-4799-3431-7
DOI :
10.1109/ISCAS.2014.6865182
