SURFACE ACOUSTIC WAVE DEVICES HAVING REDUCED SIZE

In some embodiments, a surface acoustic wave device can include a piezoelectric substrate and an interdigital transducer electrode implemented on a surface of the piezoelectric substrate, such that the surface acoustic device supports a surface acoustic wave having a wavelength λ and a phase velocit...

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Main Authors MAKI, Keiichi, NAKAMURA, Hiroyuki, GOTO, Rei, KADOTA, Michio, TANAKA, Shuji
Format Patent
LanguageEnglish
Published 07.12.2023
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
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Abstract In some embodiments, a surface acoustic wave device can include a piezoelectric substrate and an interdigital transducer electrode implemented on a surface of the piezoelectric substrate, such that the surface acoustic device supports a surface acoustic wave having a wavelength λ and a phase velocity less than 3,000 m/s with an electromechanical coupling coefficient of at least 9.0. In some embodiments, the phase velocity less than 2,000 m/s, and the surface acoustic wave can include a lowest asymmetry (A0) mode. In some embodiments, such a surface acoustic wave device can be implemented in products such as a radio-frequency filter, a radio-frequency module and a wireless device.
AbstractList In some embodiments, a surface acoustic wave device can include a piezoelectric substrate and an interdigital transducer electrode implemented on a surface of the piezoelectric substrate, such that the surface acoustic device supports a surface acoustic wave having a wavelength λ and a phase velocity less than 3,000 m/s with an electromechanical coupling coefficient of at least 9.0. In some embodiments, the phase velocity less than 2,000 m/s, and the surface acoustic wave can include a lowest asymmetry (A0) mode. In some embodiments, such a surface acoustic wave device can be implemented in products such as a radio-frequency filter, a radio-frequency module and a wireless device.
Author GOTO, Rei
TANAKA, Shuji
MAKI, Keiichi
KADOTA, Michio
NAKAMURA, Hiroyuki
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Snippet In some embodiments, a surface acoustic wave device can include a piezoelectric substrate and an interdigital transducer electrode implemented on a surface of...
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SubjectTerms BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
Title SURFACE ACOUSTIC WAVE DEVICES HAVING REDUCED SIZE
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