FREQUENCY CONVERTERS VHF TO KA BAND
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Frequency converters are used to shift a signal from one center frequency to another. They are found in almost all receivers and transmitters as well as repeaters and frequency multiplexers. The main system blocks consist of frequency synthesizers (phase locked oscillators), frequency mixers, amplifiers and filters. Frequency conversion can be coherent (i.e. phase locked to a central frequency standard) or incoherent, depending on the application. Frequency converters can be integrated into a complete radio system or as stand-alone units for use in modular systems (e.g. satellite ground stations, channel multiplexers, etc.).