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Isolators

An isolator is a two-port device that transmits microwave or radio frequency power in one direction only. It is used to shield equipment on its input side, from the effects of conditions on its output side; for example, to prevent a microwave source being detuned by a mismatched load. An isolator is a non-reciprocal device, with a non-symmetric scattering matrix. To achieve non-reciprocity, an isolator must necessarily incorporate a non-reciprocal material. At microwave frequencies this material is invariably a ferrite which is biased by a static magnetic field. The ferrite is positioned within the isolator such that the microwave signal presents it with a rotating magnetic field, with the rotation axis aligned with the direction of the static bias field. The behaviour of the ferrite depends on the sense of rotation with respect to the bias field, and hence is different for microwave signals travelling in opposite directions. Depending on the exact operating conditions, the signal travelling in one direction may either be phase-shifted, displaced from the ferrite or absorbed.

Optoelectronics > OptoCouplers > Transistor > Photovoltaic Output PhotoCouplers

Part No.	DS	Manufacturer	D/C	Qty	Region	Action
TLP321-2		Isocom	2023+	360000	China	Request A Quote

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