Long Delay Lines Employing Surface Acoustic Wave Guidance
作者:
L. R. Adkins,
A. J. Hughes,
期刊:
Journal of Applied Physics
(AIP Available online 1971)
卷期:
Volume 42,
issue 5
页码: 1819-1822
ISSN:0021-8979
年代: 1971
DOI:10.1063/1.1660449
出版商: AIP
数据来源: AIP
摘要:
Folded‐path guided surface wave delay lines offer a significant potential advantage over single‐propagation path delay lines for obtaining very long delay times. Measurements are reported here for a spiral folded‐path delay line employing a gold strip on fused quartz as the guidance structure. A 260 &mgr;sec delay was obtained at 20 MHz. The spurious signal was ≥35 dB down and the differential propagation loss was 0.03 dB/&mgr;sec. These favorable results indicate that practical long delay lines based on surface acoustic wave guidance techniques are quite feasible and that delay times into the millisecond range are attainable at higher frequencies.
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