Title: Design and analysis of a millimeter-wave direct injection-locked frequency divider with large frequency locking range
Authors: Wu, Chung-Yu
Yu, Chi-Yao
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
Keywords: frequency locking range;injection-locked frequency divider (ILFD);millimeter-wave (MMW) integrated CMOS circuit;phase-locked loop (PLL);0.13-mu m bulk CMOS technology
Issue Date: 1-Aug-2007
Abstract: In this paper, direct injection-locked frequency dividers (ILFDs), which operate in the millimeter-wave (MMW) band, are analyzed. An analytically equivalent model of the direct ILFD)s is developed, and important design guidelines for a large frequency locking range are obtained from it. These guidelines are: 1) maximize the quality factor of the passive load; 2) maintain low output amplitude; and 3) increase the dc overdrive voltage of the input device. A direct ILFD without varactors is designed and fabricated using a 0.13-mu m bulk CMOS process to verify the developed model and design guidelines. A pMOS current source is used to restrict the output amplitude and to increase the de overdrive voltage of the input device to achieve a large frequency locking range. The size of the input device is only 3.6 mu m/0.12 mu m and the measured frequency locking range is 13.6% at 70 GHz with a power consumption of 4.4 mW from a supply voltage of 1 V. In short, the proposed divider has the potential to be integrated into an MMW phase-locked loop system.
URI: http://dx.doi.org/10.1109/TMTT.2007.902067
http://hdl.handle.net/11536/10466
ISSN: 0018-9480
DOI: 10.1109/TMTT.2007.902067
Journal: IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
Volume: 55
Issue: 8
Begin Page: 1649
End Page: 1658
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