Ferrite CirculatorA ferrite circulator belongs to devices that use directional properties of ferrite. The ferrite circulator operation is based on unique properties of some special ferrite grades that occur if ferrite is exposed to continuous magnetic field.Ferrite circulators come in a number of design options.They require no power supplies and support substantially higher voltages that active circulators. They also have higher frequency band.Ferrite X-and Y-circulators are used in antenna-feeder paths to switch the antenna or switching the antenna module or a complex phased antenna array from transmission to the receiving mode.Ferrite Y-circulator has one leg with dead load. It is a modified electric valve. Using a number of Y-circulators to create series (stage) circuits, you can assemble a circulator which will have a required number of legs. Such systems used in combination with band-pass filters allows assembling devices used to sum up or divide signals with different carrier frequencies with a minimum number of filters. One of the major advantages offered by a ferrite valve is a long life time that largely depends on the aging time of permanent magnets used in the design. Please, keep in mind that if you will face some difficulties when re-tuning the receiver that had an output ferrite circulator; besides, it may reduce its performance and reliability.