High speed divider is highly desired in the millimeter wave (mmW) frequency synthesizer design. A high operating frequency, low power consumption 90-nm CMOS programmable pulse swallow multi-modulus-divider is presented in this paper. High speed true-single-phase-clock D-flip-flop (TSPC DFF) is used in the counter in order to obtain a high operating frequency. It can operate at a frequency range from 4.1 GHz to 9.2 GHz, with a division ratio of 101–164. It has a power efficiency of 3.1 GHz/mW, and it can be used to provide a high quality reference frequency in the mmW phase-locked loop.
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