MAGNETOSTATIC WAVE FILTER, NARROW BAND INTERFERENCE WAVE LIMITER USING THE FILTER AND COMMUNICATION DEVICE USING THE LIMITER

摘要

PROBLEM TO BE SOLVED: To provide a magnetostatic wave filter that can easily realize a different saturation level. SOLUTION: An input transducer 4 and an output transducer 5 arranged nearly side by side on a yttrium iron garnet YIG thin film 3 to which a DC magnetic field is applied are put in a low temperature constant oven 21 to keep the YIG thin film 3 at a low temperature of 200 [K] or below. Thus, the magnetostatic wave filter of a different saturation level can easily be realized.