FREQUENCY DIVIDER CIRCUIT,FREQUENCY SYNTHESIZER COMPRISING SUCH A DIVIDER AND RADIO TELEPHONE COMPRISING SUCH A SYNTHESIZER

摘要

REPLACEMENT SHEET30 AUG 199612Frequency divider circuit, frequency synthesizer comprising sucha divider and radio telephone comprising such a synthesizerABSTRACT:A programmable frequency divider circuit according to the invention comprises N cascade--connected frequency-dividing cells [err] Each cell [err] is switchable between adivide-by-two mode and a divide-by-three mode. A novel type of cell [err]according to theinvention comprises an additional input [err] which makes it possible to disable the cell[err]. By this means total division factors smaller than [err] can be obtained.The frequency divider circuit is applicable especially to frequency synthesizers for radiotransceiving circuits or radio telephones.Fig. 6.