公开(公告)号：US20250055442A1

公开(公告)日：2025-02-13

申请号：US18932048

申请日：2024-10-30

Applicant: Soitec

Inventor： Eric Michoulier ,  Sylvain Ballandras ,  Thierry LaRoche

IPC: H03H9/64 ,  H03H9/02

Abstract: A surface elastic wave filter has resonant cavities and comprises a composite substrate formed of a base substrate and a piezoelectric upper layer; at least one input electroacoustic transducer and an output electroacoustic transducer, arranged on the upper layer, and at least one internal reflecting structure, arranged between the input electroacoustic transducer and the output electroacoustic transducer. The internal reflecting structure comprises a first structure comprising at least one reflection grating having a first period and a second structure comprising at least one reflection grating having a second period, the first period being greater than the second period.

公开(公告)号：US11962288B2

公开(公告)日：2024-04-16

申请号：US18248183

申请日：2022-09-15

Applicant: Soitec

Inventor： Eric Michoulier ,  Sylvain Ballandras ,  Thierry LaRoche

IPC: H03H9/64 ,  H03H9/02

CPC classification number: H03H9/643 ,  H03H9/02653

Abstract: A surface elastic wave filter has resonant cavities and comprises a composite substrate formed of a base substrate and a piezoelectric upper layer; at least one input electroacoustic transducer and an output electroacoustic transducer, arranged on the upper layer, and at least one internal reflecting structure, arranged between the input electroacoustic transducer and the output electroacoustic transducer. The internal reflecting structure comprises a first structure comprising at least one reflection grating having a first period and a second structure comprising at least one reflection grating having a second period, the first period being greater than the second period.

公开(公告)号：US20230396236A1

公开(公告)日：2023-12-07

申请号：US18248183

申请日：2022-09-15

Applicant: Soitec

Inventor： Eric Michoulier ,  Thierry LaRoche

IPC: H03H9/64 ,  H03H9/02

CPC classification number: H03H9/643 ,  H03H9/02653

Abstract: A surface elastic wave filter has resonant cavities and comprises a composite substrate formed of a base substrate and a piezoelectric upper layer; at least one input electroacoustic transducer and an output electroacoustic transducer, arranged on the upper layer, and at least one internal reflecting structure, arranged between the input electroacoustic transducer and the output electroacoustic transducer. The internal reflecting structure comprises a first structure comprising at least one reflection grating having a first period and a second structure comprising at least one reflection grating having a second period, the first period being greater than the second period.

公开(公告)号：US12255634B2

公开(公告)日：2025-03-18

申请号：US18439388

申请日：2024-02-12

Applicant: Soitec

Inventor： Eric Michoulier ,  Sylvain Ballandras ,  Thierry LaRoche

IPC: H03H9/64 ,  H03H9/02

Abstract: A surface elastic wave filter has resonant cavities and comprises a composite substrate formed of a base substrate and a piezoelectric upper layer; at least one input electroacoustic transducer and an output electroacoustic transducer, arranged on the upper layer, and at least one internal reflecting structure, arranged between the input electroacoustic transducer and the output electroacoustic transducer. The internal reflecting structure comprises a first structure comprising at least one reflection grating having a first period and a second structure comprising at least one reflection grating having a second period, the first period being greater than the second period.

公开(公告)号：US20240186986A1

公开(公告)日：2024-06-06

申请号：US18439388

申请日：2024-02-12

Applicant: Soitec

Inventor： Eric Michoulier ,  Sylvain Ballandras ,  Thierry LaRoche

IPC: H03H9/64 ,  H03H9/02

CPC classification number: H03H9/643 ,  H03H9/02653

Abstract: A surface elastic wave filter has resonant cavities and comprises a composite substrate formed of a base substrate and a piezoelectric upper layer; at least one input electroacoustic transducer and an output electroacoustic transducer, arranged on the upper layer, and at least one internal reflecting structure, arranged between the input electroacoustic transducer and the output electroacoustic transducer. The internal reflecting structure comprises a first structure comprising at least one reflection grating having a first period and a second structure comprising at least one reflection grating having a second period, the first period being greater than the second period.