Filter device utilizing magnetostatic waves
First Claim
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1. A filter device for magnetostatic waves of predetermined wavelength, these magnetostatic waves being propagated in a magnetic layer epitaxied on a non-magnetic layer, comprising:
- at least one filter microstrip positioned along the path of the said waves, the width of the said microstrip being equal to a multiple of the wavelength which is to be selectively transmitted; and
dissipating means associated with the said microstrip for dissipating the energy originating from the interaction of the magnetostatic waves with the said filter microstrip.
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Abstract
The invention relates to devices utilizing magnetostatic waves. The invention has as its object a filter microtape which is able to pick up and selectively dissipate magnetostatic waves as a function of their wavelength. The filter microtape is permeable to waves of which the wavelength is a submultiple of its width. The invention is applicable in particular to tunable magnetostatic wave devices such as delay lines, resonators and oscillators.
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10 Claims
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1. A filter device for magnetostatic waves of predetermined wavelength, these magnetostatic waves being propagated in a magnetic layer epitaxied on a non-magnetic layer, comprising:
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at least one filter microstrip positioned along the path of the said waves, the width of the said microstrip being equal to a multiple of the wavelength which is to be selectively transmitted; and dissipating means associated with the said microstrip for dissipating the energy originating from the interaction of the magnetostatic waves with the said filter microstrip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification