A **frequency synthesizer** is an electronic system for generating any of a range of frequencies from a single fixed timebase or oscillator. They are found in many modern devices, including radio receivers, mobile telephones, radiotelephones, walkie-talkies, CB radios, satellite receivers, GPS systems, etc. A frequency synthesizer can combine frequency multiplication, frequency division, and frequency mixing (the frequency mixing process generates sum and difference frequencies) operations to produce the desired output signal.

Read more about Frequency Synthesizer: Types, History, System Analysis and Design, Principle of PLL Synthesizers, Practical Considerations, Use As A Frequency Modulator

### Other articles related to "frequency synthesizer, frequency synthesizers, frequency, synthesizer":

**Frequency Synthesizer**- Use As A Frequency Modulator

... Many PLL

**frequency synthesizers**can also generate

**frequency**modulation (FM) ... of the loop filter, directly varying the

**frequency**of the VCO and the

**synthesizer**output ... appear at the phase comparator output, reduced in amplitude by any

**frequency**division ...

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“The *frequency* of personal questions grows in direct proportion to your increasing girth. . . . No one would ask a man such a personally invasive question as “Is your wife having natural childbirth or is she planning to be knocked out?” But someone might ask that of you. No matter how much you wish for privacy, your pregnancy is a public event to which everyone feels invited.”

—Jean Marzollo (20th century)