Frequency divider, phase-locked loop, transceiver, radio station and frequency division method

摘要

An electronic circuit is provided arranged to receive an oscillation signal and output an output signal at a frequency having a frequency relationship defined by an oscillation signal and a division ratio. The electronic circuit comprises: a first frequency divider arranged to receive an oscillating signal and output N frequency divided signals of different phases; A second frequency divider-a second frequency divider is arranged to receive one of the N signals and frequency divide the received signal by a value given by a first control signal provided to a second frequency divider; N latch circuits - each of the N latch circuits is arranged to receive the respective signal of the N signals at the clocking input of each latch circuit and to receive the output of the second frequency divider at the input of each latch circuit -; A multiplexer circuit - a multiplexer circuit arranged to receive outputs of the N latch circuits and to output a signal selected from the received signals and based on the output signal, based on a second control signal provided to the multiplexer circuit; And a control circuit arranged to provide a first control signal and a second control signal based on the split ratio. A method for frequency division of a phase-locked loop circuit, a transceiver circuit, a radio station and an oscillation signal is also provided.