The Journal of the Acoustical Society of Korea (한국음향학회지)
- Volume 3 Issue 2
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- Pages.23-29
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- 1984
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- 1225-4428(pISSN)
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- 2287-3775(eISSN)
Surface Acoustic Wave Track Changer Using Multistrip Coupler
다중스트립결합기를 이용한 탄성표면파 빔 궤적 변환기
Abstract
In this paper surface acoustic wave beam track changers using symmetric multistrip coupler are designed on the basis of the perturbation theory, and its characteristics are studied. SAW beam track changers, which have the configuratio of the periodic array of metal strips, are designed with the following specifications ; the number of strips : 140, the strip period: 0.25λ, the ratios of the strip width to the period a/p: 0.5, 0.375, 0.25, respectively, and approximately consistent with the theoretical values, and also the bulk wave mode and the 2nd-order effects are suppressed by these track changers.
Keywords