18604619. ACOUSTIC WAVE FILTER DEVICE simplified abstract (Murata Manufacturing Co., Ltd.)

ACOUSTIC WAVE FILTER DEVICE

Organization Name

Murata Manufacturing Co., Ltd.

Inventor(s)

Akira Noguchi of Nagaokakyo-shi (JP)

ACOUSTIC WAVE FILTER DEVICE - A simplified explanation of the abstract

This abstract first appeared for US patent application 18604619 titled 'ACOUSTIC WAVE FILTER DEVICE

Simplified Explanation:

The patent application describes acoustic wave resonators in a piezoelectric substrate, with different regions having varying acoustic wave velocities.

• The resonators consist of a central region, a first region with lower velocity than the central region, and a second region with even lower velocity than the central region.
• The first resonator includes third and fourth regions with gaps of about 0.3λ or longer in a predetermined direction, outside of the first and second regions, with higher acoustic velocities than the central region.
• The second resonator does not include the third and fourth regions.

Key Features and Innovation:

• Different regions in the acoustic wave resonators have varying acoustic wave velocities.
• The inclusion of third and fourth regions with higher acoustic velocities in the first resonator.
• Design allows for control and manipulation of acoustic waves in the substrate.

Potential Applications:

• Acoustic wave filters
• Signal processing devices
• Frequency control components

Problems Solved:

• Control and manipulation of acoustic waves in piezoelectric substrates
• Optimization of acoustic wave resonator performance

Benefits:

• Improved efficiency in acoustic wave manipulation
• Enhanced performance of acoustic wave resonators
• Potential for advanced signal processing applications

Commercial Applications:

Potential commercial applications include the development of high-performance acoustic wave filters for telecommunications, signal processing devices for electronics, and frequency control components for various industries.

Questions about Acoustic Wave Resonators:

1. How do acoustic wave resonators differ from traditional resonators in terms of performance and applications? 2. What are the key advantages of using piezoelectric substrates in acoustic wave resonators?

Frequently Updated Research:

Ongoing research in the field of piezoelectric materials and acoustic wave manipulation may provide further insights into optimizing the design and performance of acoustic wave resonators.

Original Abstract Submitted

In a plan view in a thickness direction of a piezoelectric substrate, each of acoustic wave resonators includes a central region, a first region having a lower acoustic wave velocity than that of the central region, and a second region having a lower acoustic wave velocity than that of the central region. A first acoustic wave resonator includes a third region having a gap of about 0.3λ or longer in a predetermined direction outside of the first region and having a higher acoustic velocity of the acoustic wave than that of the central region, and a fourth region having a gap of about 0.3λ or longer in the predetermined direction outside of the second region and having a higher acoustic velocity of the acoustic wave than that of the central region. A second acoustic wave resonator does not include the third and fourth regions.