MICROWAVE MODULATOR ON SURFACE MAGNETOSTATIC WAVES Russian patent published in 2012 - IPC H03C7/02 

FIELD: electricity.

SUBSTANCE: microwave modulator includes extended structure on the basis of magnon crystal from ferrite film, microstrip converters for excitation and reception in ferrite film of surface magnetostatic waves, which are arranged on opposite ends of structure, constant magnetic field source, element for control of distribution parameters of magnetostatic waves. Magnon crystal is made on the basis of film from yttrium iron garnet with surface periodic structure in the form of parallel grooves the depth of which is 0.01-0.2 of film and which are arranged perpendicular to axis of extended structure. Element for control of distribution parameters of magnetostatic waves is arranged on the side of grooves and represents metallic shield movable in the direction perpendicular to plane of periodic structure and connected to piezoelectric actuator connected to electric generator of modulating signal.

EFFECT: providing the possibility of controlling the rejection level of microwave signal in frequency band without control direct current flowing along metal film.

4 cl, 4 dwg