A new technique of frequency synthesis

A novel method for the design of a frequency synthesizer is described. It is based on precision frequency measurement techniques. The frequency synthesis can be accomplished by measuring the synthesized frequency signal, comparing it with the desired frequency, and time (pulse width) - voltage transformation. In this synthesizer there are no frequency multipliers, mixers, or any other frequency transformation circuits which are used in other frequency synthesizers. The hardware circuits are very simple. Many functions are completed by software. This technique is suitable for the synthesis of complicated frequency signals. For different synthesized frequencies, the circuits are almost the same; therefore they an be used widely.<>