Analysis of a monolithic crystal plate acoustic wave filter

He, Huijing; Liu, Jinxi; Yang, Jiashi

doi:10.1016/j.ultras.2011.05.015

Cited by 15 publications

(9 citation statements)

References 20 publications

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“…In addition, the imperfect interface at x 2 =0 is characterized by the shear-lag model [9]. Different from the previous research [9][10][11]13], the elastic coefficient of the interface is non-uniform along the …”

Section: The Discription Of the Problem And Its Solutionsmentioning

confidence: 92%

“…c 56 is very small compared to c 55 and c 66 . Therefore, in the rest of this paper, we will make the usual approximation of neglecting the small c 56 [10,11]. So, the governing field equation is…”

Section: The Discription Of the Problem And Its Solutionsmentioning

confidence: 99%

“…Recently, Kong et al [10] and He et al [11] investigated the effect of mass layer on the sensors for the antiplane vibration, in which the interfaces are perfect. It has been pointed out that some calculation error may happen especially when the mass is not attached rigidly [12].…”

Section: Introductionmentioning

confidence: 99%

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The antiplane vibration of mass sensor with an inhomogeneous weak interface

Jin

2011

2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)

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The antiplane vibration of quartz plates is solved by ignoring the effect of small c 56 compared with other elastic constants. The analysis of the inhomogeneous weak interface is based on the Fourier series solution, and the convergence is examined. Numerical simulation is carried out for the interface elastic coefficient with randomly normal distribution, which is truthful in practical engineering. Compared with the homogeneous interface, the displacement jump and stress components along the interface are the largest at the edge of the plate when the interface is non-uniform, which can be used to explain the reason why this position is always broken firstly.

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Section: The Discription Of the Problem And Its Solutionsmentioning

confidence: 92%

Section: The Discription Of the Problem And Its Solutionsmentioning

confidence: 99%

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The antiplane vibration of mass sensor with an inhomogeneous weak interface

Jin

2011

2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)

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“…Therefore, it is meaningful to consider the thermal expansion effect on thickness-shear vibrations. Nevertheless, there is little theoretical analysis on this effect of crystal filters, because the situation is too complicated to be explained clearly with 2D equations [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Thermal expansion effect on thickness-shear vibrations in a piezoelectric quartz filter with dot-ring electrodes

Li¹,

Liu²

2018

IJHT

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This paper aims to disclose the thermal expansion effect on thickness-shear vibrations of quartz filters. To this end, a brand-new "dot-ring" electrode structure was proposed for quartz filter operating in thickness-shear modes (TSMs). Then, a reasonable solution to the government equations of thermal expansion was derived, and the thermal expansion effect on the operation modes and vibration frequencies of the filter were examined in details. Through the rational design of electrode size and quartz plate thickness, a frequency interval was determined with two trapped modes. Under the working temperature between -55°C and 85°C, the electrode sizes changed with the thermal expansion; the resonance frequency declined with the increase of temperature. However, the frequency difference considering the thermal expansion effect is extremely small, indicating that the quartz crystal filter has good thermal stability. The research findings shed new light on the design of quartz filters.

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“…This is complicated and sometimes it can be impossible, especially when there are two or more pairs of electrodes. Theoretical results on crystal filters are few and scattered [21][22][23][24][25], and they were either for modes varying in one of the two in-plane directions of a plate only, or were with various approximations.…”

Section: Introductionmentioning

confidence: 99%