Low‐power transformer‐based current‐reuse injection‐locked frequency divider. Issue 2 (1st January 2015)

• Record Type: Journal Article
• Authors: Ha, Keum‐Won; Sung, Eun‐Taek; Baek, Donghyun
• Is Part Of: Electronics letters. Volume 51:Issue 2(2015)
• Page Start: 161
• Page End: 162
• Publication Date: 2015-01-01
• Subjects: low‐power electronics -- frequency dividers -- injection locked oscillators -- transformer cores -- CMOS analogue integrated circuits -- phase noise -- integrated circuit noise -- UHF integrated circuits -- UHF oscillators -- MMIC oscillators; low‐power transformer‐based current‐reuse injection‐locked frequency divider -- ILFD -- complementary Gm‐boosted Colpitts oscillator core -- negative transconductance -- power consumption -- CMOS process -- frequency 4.93 GHz -- frequency 870 MHz -- power 1.37 mW -- power 2.5 mW -- voltage 1.15 V -- voltage 1.3 V -- size 0.13 mum; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2014.4052
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A novel low‐power injection‐locked frequency divider (ILFD) is proposed, in which a complementary Gm ‐boosted Colpitts oscillator core is employed to improve negative transconductance ( Gm ) and the current‐reuse technique using a single transformer is applied to reduce the power consumption. The proposed ILFD exhibits a self‐resonant frequency of 4.93 GHz with a maximum locking range of 870 MHz at 0 dBm of input power. The phase noises of the input and output signals are −128.54 and −134.53 dBc/Hz, respectively. The ILFD consumes 1.37 and 2.5 mW at 1.15 and 1.3 V, respectively. The chip area is 715.5 × 468 μm 2 in a 0.13 μm CMOS process. To the authors' knowledge, this is the first demonstration of the current‐reuse ILFD.