FREQUENCY PRESETTING DEVICE FOR AN INDIRECT FREQUENCY SYNTHESIZER, AND SYNTHESIZER COMPRISING SUCH A DEVICE

摘要

A frequency prepositioning device for an indirect frequency synthesizer having switchable loops comprises an oscillator controlled by a voltage VN and at least one programmable prepositioning voltage generator. The device essentially comprises a memory device for storing the values of the prepositioning voltage at each transition to each frequency, thus making the device self-adaptive and capable of self-testing.