Coupled-Mode Analysis of Love Waves in a Filter Film with Periodically Corrugated Surfaces

Muhammad A. Hawwa; Omar R. Asfar

doi:10.1109/58.265815

Coupled-Mode Analysis of Love Waves in a Filter Film with Periodically Corrugated Surfaces

Muhammad A. Hawwa, Omar R. Asfar

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Mode coupling of Love waves in an orthotropic thin film having periodically corrugated surfaces over an isotropic elastic half space is considered. Six modes are coupled by both surfaces by means of three simultaneous resonant conditions. On the basis of the weakness of the corrugations, the method of multiple scales is used to derive the coupled-mode equations. These equations together with relevant boundary conditions form a two-point boundary-value problem, which is solved numerically. The filter frequency response of a corrugated film designed as a stop-band filter is calculated. Enhanced filter characteristics are achieved when tapered corrugations are imposed. A narrow pass-band filter is also designed. Its high quality factor presents the fascinating features that might be realized by including the periodic corrugations in the design of SAW devices.

Original language	English
Pages (from-to)	13-18
Number of pages	6
Journal	IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume	41
Issue number	1
DOIs	https://doi.org/10.1109/58.265815
State	Published - Jan 1994
Externally published	Yes

ASJC Scopus subject areas

Instrumentation
Acoustics and Ultrasonics
Electrical and Electronic Engineering

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title = "Coupled-Mode Analysis of Love Waves in a Filter Film with Periodically Corrugated Surfaces",

abstract = "Mode coupling of Love waves in an orthotropic thin film having periodically corrugated surfaces over an isotropic elastic half space is considered. Six modes are coupled by both surfaces by means of three simultaneous resonant conditions. On the basis of the weakness of the corrugations, the method of multiple scales is used to derive the coupled-mode equations. These equations together with relevant boundary conditions form a two-point boundary-value problem, which is solved numerically. The filter frequency response of a corrugated film designed as a stop-band filter is calculated. Enhanced filter characteristics are achieved when tapered corrugations are imposed. A narrow pass-band filter is also designed. Its high quality factor presents the fascinating features that might be realized by including the periodic corrugations in the design of SAW devices.",

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year = "1994",

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T1 - Coupled-Mode Analysis of Love Waves in a Filter Film with Periodically Corrugated Surfaces

AU - Hawwa, Muhammad A.

AU - Asfar, Omar R.

PY - 1994/1

Y1 - 1994/1

N2 - Mode coupling of Love waves in an orthotropic thin film having periodically corrugated surfaces over an isotropic elastic half space is considered. Six modes are coupled by both surfaces by means of three simultaneous resonant conditions. On the basis of the weakness of the corrugations, the method of multiple scales is used to derive the coupled-mode equations. These equations together with relevant boundary conditions form a two-point boundary-value problem, which is solved numerically. The filter frequency response of a corrugated film designed as a stop-band filter is calculated. Enhanced filter characteristics are achieved when tapered corrugations are imposed. A narrow pass-band filter is also designed. Its high quality factor presents the fascinating features that might be realized by including the periodic corrugations in the design of SAW devices.

AB - Mode coupling of Love waves in an orthotropic thin film having periodically corrugated surfaces over an isotropic elastic half space is considered. Six modes are coupled by both surfaces by means of three simultaneous resonant conditions. On the basis of the weakness of the corrugations, the method of multiple scales is used to derive the coupled-mode equations. These equations together with relevant boundary conditions form a two-point boundary-value problem, which is solved numerically. The filter frequency response of a corrugated film designed as a stop-band filter is calculated. Enhanced filter characteristics are achieved when tapered corrugations are imposed. A narrow pass-band filter is also designed. Its high quality factor presents the fascinating features that might be realized by including the periodic corrugations in the design of SAW devices.

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SN - 0885-3010

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EP - 18

JO - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

JF - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

IS - 1

ER -

Coupled-Mode Analysis of Love Waves in a Filter Film with Periodically Corrugated Surfaces

Abstract

ASJC Scopus subject areas

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