Study of a Wafer Level Package (WLP) for Surface Acoustic Wave (SAW) Filter

2006 ◽  
Author(s):  
Shan Gao ◽  
Jupyo Hong ◽  
Taehoon Kim ◽  
Seogmoon Choi ◽  
Sung Yi
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Wafer Level ◽  
Wafer Level Package

Design Optimization of a Wafer Level Package for Surface Acoustic Wave Filters

2007 ◽  
Author(s):  
Jupyo Hong ◽  
Shan Gao ◽  
Job Ha ◽  
Sijoong Yang ◽  
Ingoo Kang ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Three Dimensional ◽  
Wafer Level ◽  
Filling Materials ◽  
Dimensional Finite Element ◽  
Via Holes ◽  
Cte Mismatch ◽  
Via Hole ◽  
Three Dimensional Finite Element

In this paper, wafer level packaging of a surface acoustic wave (SAW) filter is considered. Numerical studies based on a three-dimensional finite element method (FEM) have been conducted in order to evaluate the reliability of a wafer level SAW package. The effects of package geometric parameters, such as the diameter of via hole and wafer thickness, on the reliability of the wafer level SAW package have been studied. The results show that the diameter of via hole for interconnection plays a key role in the reliability of the SAW package because the CTE mismatch between the filling materials of via holes (copper) and surrounding cap wafer martial (LiTiO3) is the highest among the material pairs in the package. Such CTE mismatch leads to the maximum stresses and warpages. The optimal thermo-mechanical properties of packaging materials have been proposed to achieve the minimum thermal stress during reflow process. Moreover, numerical results have also been compared with the experimental ones to validate the FEM model.

STUDY OF DEFECTS IN a-Ge AND a-GeHxUSING SURFACE ACOUSTIC WAVE TECHNIQUE

1981 ◽  
Vol 42 (C4) ◽  
pp. C4-365-C4-368
Author(s):  
K. L. Bhatia ◽  
M.v. Haumeder ◽  
S. Hunklinger
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Wave Technique

Powder Transport by Surface Acoustic Wave Actuator using Bragg Reflection

2014 ◽  
Vol 134 (12) ◽  
pp. 1934-1935
Author(s):  
Tsunemasa Saiki ◽  
Yuya Matsui ◽  
Yasuto Arisue ◽  
Yuichi Utsumi ◽  
Akinobu Yamaguchi
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Bragg Reflection
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