FREQUENCY MULTIPLIER CIRCUIT

摘要

PROBLEM TO BE SOLVED: To solve problems of a conventional frequency multiplier circuit that has complicated the circuit configuration because of employing many components such as resistors and capacitors to obtain a multiplied signal of a high-order resulting in causing difficulty in downsizing and especially circuit integration and cannot have accurately determined the duty ratio because of existence in dispersion in the resistance of the resistor and the capacitance of the capacitors depending on each component. SOLUTION: The frequency multiplier circuit of this invention is provided with a duty ratio variable means having a circuit to receive a signal and set the duty ratio of this signal to a desirable value and of a filter means that selectively extracts a desired multiple frequency signal from the signal outputted from the duty ratio variable means.