Title :
Enhanced locking range technique for frequency divider using dual-resonance RLC resonator
Author :
Jang, S.-L. ; Chen, Y.-J. ; Fang, C.-H. ; Lai, W.C.
Author_Institution :
Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan
Abstract :
An enhanced locking range technique for a CMOS injection-locked frequency divider (ILFD) is presented, which uses a cross-coupled oscillator with a dual-resonance RLC resonator. This ILFD has dual locking ranges at a fixed bias, and the resistor in the resonator is used to have overlapping dual locking ranges so that a single-band wide-locking range is obtained. At the incident power of 0 dBm, the locking range of the divide-by-2 ILFD is 6.7 GHz, from 3 to 9.7 GHz, and the locking range percentage is 105.51%.
Keywords :
CMOS integrated circuits; MMIC frequency convertors; RLC circuits; field effect MMIC; frequency dividers; CMOS injection locked frequency divider; dual resonance RLC resonator; enhanced locking range technique; frequency 3 GHz to 9.7 GHz; single band frequency divider; wide locking range frequency divider;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2015.2411
