Magnon phase discriminator of microwave oscillations

A model of the phase discriminator of the microwave oscillations based on the interference of spin waves in a ferromagnetic film is investigated. The excitation of spin waves in the film is carried out by two microstrip antennas, and the total oscillation due to the inverse spin Hall effect occurred on a platinum bus located between them. An equivalent electrical circuit of a phase discriminator is presented and investigated, and a discriminatory characteristic is obtained as a function of the phase difference of the input oscillations and the ratio of their amplitudes. The micromagnetic simulation of the transformation of spin waves propagating in a ferromagnetic film into an output DC voltage showed good agreement with the dependence obtained theoretically.