A microwave nonlinear phase shifter is described. It is a device producing a power-dependent phase shift of microwave signals. The device is fabricated with a ferrite film which serves as a waveguide for magnetostatic spin waves. A nonlinear phase shift of the carrier spin waves appearing under increasing their power is the key phenomenon in the device operation. A theoretical model for the nonlinear phase shifter is presented. The model provides a good description for the experimentally obtained performance characteristics of the device.
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Устинов et al. (2008) studied this question.
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