Dual-Modulus Prescaler For RF Frequency Synthesizer

摘要

The present invention relates to a high-frequency frequency synthesis appointed dual modulus prescaler, in particular, to provide a selective, by implemented using latches technology, the operating speed and the high-frequency frequency synthesis appointed dual modulus prescaler to obtain a characteristic improvement in power consumption side to have its purpose.; To this end, the present invention relates to a voltage controlled oscillator for generating a clock signal, a dual-modulus prescaler having a programmable counter for generating a mode control signal for selecting the dispensing mode, in synchronization with the clock signal, and generates a latch control signal , the second division mode dispensing mode the switch box as well as frequency divider and outputting the clock signal to the above generated at the rising edge of the latch control signal in accordance with the below referred to the clock signal, the latch, and the clock signal a first dispensing mode, a first frequency divider means; Second frequency division means to the first output a plurality of frequency division signal frequency divider divides the frequency division signal of the division ratio given from the frequency division means; And it characterized in that it comprises a logic operation means for generating a control signal for controlling the dispensing mode of the first frequency division means conducts logic operation to the plurality of the division signal and the mode control signal.