Ferri-magnetic film frequency modulator
AssigneeUniden Corporation
InventorYoshihiro Konishi
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Abstract
For realizing a highly sensitive and favorably linear frequency modulator stably operating with a small-sized and readily manufactured arrangement, input and output strip electrodes are disposed in face on both ends of a ferri-magnetic film deposited on a magnetic substrate and applied with a DC magnetic field perpendicular thereto, a high frequency electro-magnetic wave being applied through the input electrode, so as to generate a magneto-static forward volume wave propagating through the magnetic film, the propagation phase of which is modulated in response to the intensity variation of the applied magnetic field modulated by a signal, so as to derive a frequency modulated electro-magnetic wave from the output electrode.
Claims12
A ferri-magnetic film frequency modulator in which a ferri-magnetic material film deposited on a substrate is provided thereon with an input strip electrode and an output strip electrode which are mutually faced apart from each other, a high frequency electro-magnetic wave being applied thereon through said input strip electrode, a DC magnetic field being applied on said ferri-magnetic material film, a magneto-static wave converted from said high frequency electro-magnetic wave being propagated between said input strip electrode and said output strip electrode and the wavelength of said magneto-static wave being varied by modulating the intensity of said DC magnetic field with a signal, wherein a high frequency output electro-magnetic wave, which is frequency-modulated by said signal, is derived from said output strip electrode.
Dependencies are inferred from the claim text.