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| | Ferri-magnetic film frequency modulator - Patent 5168248 |
 | | A ferri-magnetic film frequency modulator as claimed in claim 1, wherein said DC magnetic field is applied perpendicular to said ferri-magnetic material film and perpendicular to said input strip electrode and to said output strip electrode also, so as to form said magneto-static wave of a magneto-static forward volume wave. |
 | | This magneto-static wave is propagated through the YIG film 11 perpendicular to the electrodes 9, 10, and, as a result, a frequency modulated high frequency output electro-magnetic wave, which is converted from the magneto-static wave phase-modulated during the propagation and arriving at the output strip electrode 10, is derived therefrom. |
 | | In the situation such that the film of ferri-magnetic material, for example, YIG, which is magnetized by the application of the DC magnetic field, is further applied with the high frequency electro-magnetic wave through the input strip electrode, the magnetic coupling is caused in the ferri-magnetic material film and, as shown in FIGS. |
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