FREQUENCY MULTIPLIER CAPABLE OF GENERATING A PULSE SIGNAL FOR A MULTIPLYING CLOCK SIGNAL BY BEING DELIVERED WITH A DIFFERENTIAL CLOCK FROM A DELAY LOCKED LOOP WHICH IS EQUIPED WITH MULTIPLE DELAY CELLS AND A FREQUENCY MULTIPLYING METHOD THEREOF

摘要

PURPOSE: A frequency multiplier and a frequency multiplying method thereof are provided to compensate an overlap between pulse signals which are generated from a pulse generator.;CONSTITUTION: A multiplying unit(200) includes a pulse generator(210) and an edge combiner(220). The pulse generator receives a differential clock signal from a delay locked loop which is equipped with multiple delay cells and generates a pulse signal for generating a multiplying clock signal. The pulse generator includes a middle pulse signal generation end(212) and an overlap compensating end(213). The overlap compensating end receives the differential clock signal and generates middle pulse signals. The overlap compensation end generates a compensation pulse signal by compensating an overlap between the middle pulse signals. The edge combiner receives the compensation pulse signal and generates a multiplying clock signal.;COPYRIGHT KIPO 2013;[Reference numerals] (210) Pulse generator; (220) Edge combiner