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Tuning-Range Enhancement Through Deterministic Mode Selection in RF Quadrature Oscillators.
- Source :
-
IEEE Transactions on Microwave Theory & Techniques . Nov2015, Vol. 63 Issue 11, p3713-3726. 14p. - Publication Year :
- 2015
-
Abstract
- Quadrature oscillators (QOs) based on parallel or series coupling mechanisms produce ambiguous phase relationships between the coupled oscillators. Deterministic mode selection is presented and analyzed for a series-coupled LC quadrature oscillator (LC-QO) and leveraged to increase the tuning range of the QO. Series-coupled LC-QOs have been implemented in a 90-nm CMOS technology. Measured results show a frequency tuning range of 94% for a center frequency of 1.3 GHz, 60% for the oscillator operating at 3.7 GHz, and 52% for the oscillator operating at 4.4 GHz. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 00189480
- Volume :
- 63
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Microwave Theory & Techniques
- Publication Type :
- Academic Journal
- Accession number :
- 110834762
- Full Text :
- https://doi.org/10.1109/TMTT.2015.2478787