Title :
1-GHz and 2.8-GHz CMOS injection-locked ring oscillator prescalers
Author :
Betancourt-Zamora, R.J. ; Verma, S. ; Lee, T.H.
Author_Institution :
Allen Center for Integrated Syst., Stanford Univ., CA, USA
Abstract :
We implemented prescalers that can operate up to 2.8-GHz by exploiting the injection locking phenomena in differential CMOS ring oscillators. We tested a 5-stage, 1-GHz injection-locked modulo-8 prescaler fabricated in a 0.24-/spl mu/m CMOS technology that consumes 350 /spl mu/W of power and occupies 0.012 mm/sup 2/ of die area. The locking range is 20 MHz and the locked phase noise is -110 dBc/Hz @ 100 kHz. A 2.8-GHz, 3-stage, modulo-4 divider is also presented.
Keywords :
CMOS analogue integrated circuits; UHF integrated circuits; UHF oscillators; injection locked oscillators; low-power electronics; phase noise; prescalers; 0.24 micron; 1 GHz; 2.8 GHz; 350 muW; CMOS; die area; differential CMOS ring oscillators; injection-locked ring oscillator prescalers; locked phase noise; locking range; modulo-8 prescaler; CMOS technology; Frequency conversion; Frequency synthesizers; Injection-locked oscillators; Phase noise; Power dissipation; Radio frequency; Ring oscillators; Semiconductor device modeling; Tail;
Conference_Titel :
VLSI Circuits, 2001. Digest of Technical Papers. 2001 Symposium on
Conference_Location :
Kyoto, Japan
Print_ISBN :
4-89114-014-3
DOI :
10.1109/VLSIC.2001.934191
