FILTER, FILTER ASSEMBLY, AND CARRIER AGGREGATION SYSTEM

Title:

FILTER, FILTER ASSEMBLY, AND CARRIER AGGREGATION SYSTEM

Document Type and Number:

Japanese Patent JP2023156326

Kind Code:

A

Abstract:

To provide a filter including a surface acoustic wave device for a carrier aggregation system that suppresses a high-order spurious mode.SOLUTION: A filter is configured to pass a first band of a carrier aggregation signal. The filter includes a surface acoustic wave device 10, and the surface acoustic wave device includes a quartz crystal substrate 12, an interdigital transducer electrode 16, and a lithium tantalate (LiTaO3) layer 14 positioned between the quartz crystal substrate and the interdigital transducer electrode. The surface acoustic wave device suppresses a higher-order spurious mode corresponding to the second band of the carrier aggregation signal.SELECTED DRAWING: Figure 3A

Inventors:

GOTO REI
MAKI KEIICHI
HAMAOKA YOSUKE

Application Number:

JP2023118244A

Publication Date:

October 24, 2023

Filing Date:

July 20, 2023

Export Citation:

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Assignee:

SKYWORKS SOLUTIONS INC

International Classes:

H03H9/25

Attorney, Agent or Firm:

Hidekazu Miyoshi
Hiroko Hara
Kazushi Obuchi

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