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GPS Time & Frequency Systems

From TRAK Microwave Corporation

For years, precise time and frequency has played many important roles in commercial, military, and aerospace applications. Most of us are more familiar with the commercial applications. A few of these include high quality television pictures, excellent voice and data quality over telecommunications networks, and very good long-term frequency stability from power companies.

As the world becomes more "digital," demand for higher performance time and frequency systems have increased, along with the usual requirement for reduction in size and cost. Coupled to this, is the need for highly accurate synchronization of multiple systems.

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Oscillators
Oscillators are devices that are used to generate repetitive signals. They produce output signals without an input signal. There are two major types of electronic oscillators: harmonic oscillators and relaxation oscillators. Harmonic oscillators produce sine wave outputs. Relaxation oscillators produce non-sine wave outputs such as square wave, rectangular wave, and sawtooth outputs.
RF Frequency Converters
RF frequency converters are integrated component assemblies required for converting microwave signals to lower (or intermediate) or higher frequency range for further processing.  
Frequency Synthesizers
Frequency synthesizers are electronic devices that generate frequencies by using a combination of other frequencies.
Comb Generators
Comb generators create harmonic frequencies from which one frequency can be selected with a narrow filter and filtered out.
RF Isolators and RF Circulators
RF isolators and RF circulators are passive devices used to control the propagation of an RF signal.
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