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Design and optimization of the ring oscillator based injection locked frequency dividers.
- Source :
-
Microelectronics Journal . Feb2018, Vol. 72, p40-48. 9p. - Publication Year :
- 2018
-
Abstract
- In this paper, the large signal operation of the ring oscillator based injection locked frequency divider is analyzed considering the trade-offs among the operating frequency, locking range and power consumption. A large signal model is used to reveal several key findings such as voltage-limited locking ranges and asymmetry between the upper and lower locking bands. They are applied to the optimize the dividers maintaining a good balance among design considerations. Several prototypes, including the divide-by-2 with 3 and 5 stages of inverters, divide-by-3 and divide-by-5, are implemented in a standard 0.18 µm CMOS technology to verify the operation under a large injected signal. As an extension, dual-modulus prescalers are further designed by the integration of switches for different ways of signal mixing. Measurements results show the proposed divide-by-2/3 unit and a divide-by-8/9 with this unit are able to work up to 8 GHz and 4.0 GHz with maximum power consumption of 0.7 mW and 1.5 mW respectively. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00262692
- Volume :
- 72
- Database :
- Academic Search Index
- Journal :
- Microelectronics Journal
- Publication Type :
- Academic Journal
- Accession number :
- 127843701
- Full Text :
- https://doi.org/10.1016/j.mejo.2017.12.005