Referenced Items are not available for this document.
A monolithic integration of filters on Si or GaAs substrates is highly desirable to miniaturize the outer dimensions of the cellular phones. But, direct monolithic integration of surface acoustic wave (SAW) filters is impossible with Si, which is nonpiezoelectric, and difficult with GaAs, which is weakly piezoelectric. One alternative is the deposition of a piezoelectric film on the semiconductor substrate. In this paper, we propose a modified coupling-of- modes (COM) approach, which can be used in the practical design of a layered ZnO/Si SAW filter. This is a dispersive SAW-layered filter, and some of the COM parameters become frequency dependent due to the phase velocity dispersion. The frequency response of the 3-step ladder type ZnO/Si SAW filter is analyzed and compared with the experimental results.
Published in:
Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on
(Volume:54
,
Issue:
10
)
Date of Publication: October 2007
- Page(s):
- 2011 - 2015
- ISSN :
- 0885-3010
- INSPEC Accession Number:
- 9677229
- Digital Object Identifier :
- 10.1109/TUFFC.2007.495
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 22 October 2007
- Issue Date :
- October 2007
- Sponsored by :
- IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society
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