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Rspudt filters based on different width split fingers
- Source :
- IEEE Symposium on Ultrasonics, 2003.
- Publication Year :
- 2004
- Publisher :
- IEEE, 2004.
-
Abstract
- RSPUDT filters based on different width split fingers for IF applications have been developed. Such filters provide improvement of insertion loss comparing to DART-RSPUDT filters. A new optimization procedure for RSPUDT filter design has been proposed based on the adjustment of RSPUDT through a synthesis grid of narrow structure elements. The width of these elements is equal to or smaller than a minimal finger width of a basic SPUDT structure. This approach provides additional improvement of filter characteristics. DWSF-RSPUDT filters on quartz and 112/spl deg/-LiTaO/sub 3/ are reported. Relative bandwidths of these filters are 1-3% and out-of-band rejection about 40 dB. Insertion loss is 1-3 dB better than that for equivalent filters based on other RSPUDT structures.
- Subjects :
- Filter design
Materials science
Filter (video)
Acoustics
Insertion loss
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- IEEE Symposium on Ultrasonics, 2003
- Accession number :
- edsair.doi...........a7183179ef8e72861d1ca02b2d58da54