Filter system comprising a bulk acoustic wave resonator
AssigneeKoninklijke Philips Electronics N.V.
InventorsHans Peter Loebl, Mareike Katharine Klee, Robert Frederick Milsom, Christof Metzmacher, Wolfgang Brand
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Abstract
The invention relates to a filter device equipped with at least one bulk acoustic wave resonator, which comprises a resonator unit and a reflection element (2) comprising several layers (6, 7, 8). The layers (6, 7, 8) each comprise a mixture of at least two materials. Within each layer (6, 7, 8), the composition of the mixture varies continuously and periodically relative to the layer thickness.
Claims7
A filter device equipped with at least one bulk acoustic wave resonator, which comprises a resonator unit and a reflection element (2), wherein the reflection element (2) comprises several layers (6, 7, 8), which each comprise a mixture of at least two materials, wherein, within each layer (6, 7, 8), the composition of the mixture varies continuously and periodically relative to the layer thickness.
A mobile radio device equipped with a filter device with at least one bulk acoustic wave resonator, which comprises a resonator unit and a reflection element (2), wherein the reflection element (2) comprises several layers (6, 7, 8), which each comprise a mixture of at least two materials, wherein, within each layer (6, 7, 8), the composition of the mixture varies continuously and periodically relative to the layer thickness.
A transmitter equipped with a filter device with at least one bulk acoustic wave resonator, which comprises a resonator unit and a reflection element (2), wherein the reflector element (2) comprises several layers (6, 7, 8), which each comprise a mixture of at least two materials, wherein, within each layer (6, 7, 8), the composition of the mixture varies continuously and periodically relative to the layer thickness.
A receiver equipped with a filter device with at least one bulk acoustic wave resonator, which comprises a resonator unit and a reflection element (2), wherein the reflection element (2) comprises several layers (6, 7, 8), which each comprise a mixture of at least two materials, wherein, within each layer (6, 7, 8), the composition of the mixture varies continuously and periodically relative to the layer thickness.
A wireless data transmission system equipped with a filter device with at least one bulk acoustic wave resonator, which comprises a resonator unit and a reflection element (2), wherein the reflector element (2) comprises multiple layers (6, 7, 8), which each comprise a mixture of at least two materials, wherein, within each layer (6, 7, 8), the composition of the mixture varies continuously and periodically relative to the layer thickness.
A bulk acoustic wave resonator, which comprises a resonator unit and a reflection element (2), wherein the reflection element (2) comprises several layers (6, 7, 8), which each comprise a mixture of at least two materials, wherein, within each layer (6, 7, 8), the composition of the mixture varies continuously and periodically relative to the layer thickness.
Dependencies are inferred from the claim text.