A Bleustein-Gulyaev-Shimizu wave resonator with 2 or 3 resonances for double traps in TV and VCR (VTR)

Michio Kadota; Junya Ago; Hideya Horiuchi

doi:10.1143/jjap.35.3020

A Bleustein-Gulyaev-Shimizu wave resonator with 2 or 3 resonances for double traps in TV and VCR (VTR)

Michio Kadota, Junya Ago, Hideya Horiuchi

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

1 Citation (Scopus)

Abstract

A Bleustein-Gulyaev-Shimizu (BGS) wave with only a shear-horizontal (SH) displacement has the property of complete reflection at the free edge of a piezoelectric ceramic substrate. A BGS wave resonator utilizing this property is super-miniature and wide band, has a small capacitance ratio, and does not require frequency tuning. At present, two kinds of BGS resonators have been used as the additional traps at f_ap and f_as in TV·VCR VIF circuits. In this work, utilizing the responses generated due to the frequency characteristic of weighted IDT and even mode reflections at free edges of the substrate, we propose a new type of BGS resonator device which has two or three resonant frequencies for both f_ap and f_as. By applying this resonator in a VIF circuit, we have confirmed that it produces sufficient attenuations for practical use at both f_ap and f_as.

Original language	English
Pages (from-to)	3020-3023
Number of pages	4
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	35
Issue number	5 B
DOIs	https://doi.org/10.1143/jjap.35.3020
Publication status	Published - 1996
Externally published	Yes

Keywords

BGS wave
Double trap device
PZT
Resonator
VIF circuit

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/jjap.35.3020

Cite this

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title = "A Bleustein-Gulyaev-Shimizu wave resonator with 2 or 3 resonances for double traps in TV and VCR (VTR)",

abstract = "A Bleustein-Gulyaev-Shimizu (BGS) wave with only a shear-horizontal (SH) displacement has the property of complete reflection at the free edge of a piezoelectric ceramic substrate. A BGS wave resonator utilizing this property is super-miniature and wide band, has a small capacitance ratio, and does not require frequency tuning. At present, two kinds of BGS resonators have been used as the additional traps at fap and fas in TV·VCR VIF circuits. In this work, utilizing the responses generated due to the frequency characteristic of weighted IDT and even mode reflections at free edges of the substrate, we propose a new type of BGS resonator device which has two or three resonant frequencies for both fap and fas. By applying this resonator in a VIF circuit, we have confirmed that it produces sufficient attenuations for practical use at both fap and fas.",

keywords = "BGS wave, Double trap device, PZT, Resonator, VIF circuit",

author = "Michio Kadota and Junya Ago and Hideya Horiuchi",

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AU - Kadota, Michio

AU - Ago, Junya

AU - Horiuchi, Hideya

PY - 1996

Y1 - 1996

N2 - A Bleustein-Gulyaev-Shimizu (BGS) wave with only a shear-horizontal (SH) displacement has the property of complete reflection at the free edge of a piezoelectric ceramic substrate. A BGS wave resonator utilizing this property is super-miniature and wide band, has a small capacitance ratio, and does not require frequency tuning. At present, two kinds of BGS resonators have been used as the additional traps at fap and fas in TV·VCR VIF circuits. In this work, utilizing the responses generated due to the frequency characteristic of weighted IDT and even mode reflections at free edges of the substrate, we propose a new type of BGS resonator device which has two or three resonant frequencies for both fap and fas. By applying this resonator in a VIF circuit, we have confirmed that it produces sufficient attenuations for practical use at both fap and fas.

AB - A Bleustein-Gulyaev-Shimizu (BGS) wave with only a shear-horizontal (SH) displacement has the property of complete reflection at the free edge of a piezoelectric ceramic substrate. A BGS wave resonator utilizing this property is super-miniature and wide band, has a small capacitance ratio, and does not require frequency tuning. At present, two kinds of BGS resonators have been used as the additional traps at fap and fas in TV·VCR VIF circuits. In this work, utilizing the responses generated due to the frequency characteristic of weighted IDT and even mode reflections at free edges of the substrate, we propose a new type of BGS resonator device which has two or three resonant frequencies for both fap and fas. By applying this resonator in a VIF circuit, we have confirmed that it produces sufficient attenuations for practical use at both fap and fas.

KW - BGS wave

KW - Double trap device

KW - PZT

KW - Resonator

KW - VIF circuit

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JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

IS - 5 B

ER -

A Bleustein-Gulyaev-Shimizu wave resonator with 2 or 3 resonances for double traps in TV and VCR (VTR)

Abstract

Keywords

ASJC Scopus subject areas

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