Multiple Modulus Fractional-N Frequency Divider Using N+1/2 Division
نویسندگان
چکیده
Introduction: Fractional-N frequency dividers allow PLL Synthesizers to have frequency resolutions finer than the reference frequency. However, there are two disadvantages in a fractional-N divider, namely, fractional spurs generation and frequency range limitation. A fractional-N divider generates fractional spurs due to the fixed pattern of the dual-modulus divider [1]. The frequency range of a fractional-N divider is equal to its reference frequency, hence limits its usefulness especially in wide band applications.
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