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| 论文题目 |
Optimal design of an RSPUDT-based SAW filter with constant group delay |
| 论文题目（英文） |
Optimal design of an RSPUDT-based SAW filter with constant group delay |
| 作者 |
李红浪 |
| 发表年度 |
2007 |
| 卷 |
10 |
| 期 |
54 |
| 页码 |
1960-1964 |
| 期刊名称 |
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| 摘要 |
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| 摘要_英文 |
This paper describes the application of resonant single-phase unidirectional transducers (RSPUDTs) to the development of low-loss SAW filters with constant group delay in transition bands as well as in the passband. A low-loss SAW filter with constant group delay was designed and fabricated on a 128degYX-LiNbO3 substrate. Experimental results were in good agreement with the design; the group delay deviation of 20 ns was realized over the range of plusmn8 MHz at the center frequency of 512 MHz. The minimum insertion loss and -3 dB bandwidth were 4.3 dB and 8.5 MHz, respectively. The application of this technique is also extended to develop high-performance wideband filters employing quasi-slanted interdigital transducers. |
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