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- Author(s):
- Weigel, Robert; Bader, Bernhard; Fischerauer, Gerhard; Russer, Peter
- Title:
- Design and Performance of Wide-Band IIDT-Type SAW Filters with Low Loss and Improved Sidelobe Suppression
- Abstract:
- Wideband low-loss surface-acoustic-wave (SAW) filters employing interdigitated interdigital transducers (IIDTs) suitable for cellular radio systems are presented. The filters were fabricated on 36 degrees Y-X LiTaOtextlesssubtextgreater3textless/subtextgreater substrates. The sidelobe suppression has been improved by withdrawal weighting techniques. A design method which optimizes the weighting functions and the number of fingers has been worked out. In the 500-MHz band, fractional bandwidths of... »
- Keywords:
- 1.8 dB, 500 MHz, cellular radio, cellular radio systems, design method, IIDT-type SAW filters, interdigitated interdigital transducers, LiTaOtextlesssubtextgreater3textless/subtextgreater substrates, LiTaO3 substrates, low loss, radiofrequency filters, sidelobe suppression, surface acoustic wave filters, surface-acoustic-wave, weighting functions, wideband type, withdrawal weighting techniques
- Book / Congress title:
- IEEE MTT-S International Microwave Symposium
- Volume:
- 3
- Publisher address:
- Atlanta, GA, USA
- Year:
- 1993
- Month:
- jun
- Pages:
- 1505--1508
- Fulltext / DOI:
- doi:10.1109/MWSYM.1993.276855
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