What Is a Frequency Synthesizer?
A frequency synthesizer generates signals of various frequencies from a single, highly accurate reference frequency. It is essential in communication, measurement, medical, and industrial machinery.
Its operation is based on three key components: a reference frequency source, a frequency multiplier, and a frequency divider. These components work together to produce any desired frequency from the reference frequency.
The synthesizer starts by creating a precise frequency from the reference source. It then amplifies this frequency using the multiplier and adjusts it with the frequency divider to achieve the target frequency. Characteristics of frequency synthesizers include their ability to generate accurate and stable signals, wide frequency coverage, and compact design. However, they are noted for their high cost, complex operating principles, and vulnerability to noise interference.