Surface-wave delay lines with near-octave bandwidth
- 23 September 1971
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 7 (19) , 570-572
- https://doi.org/10.1049/el:19710385
Abstract
Efficient operation of lithium-niobate delay lines over bandwidths approaching one octave is reported. The transducers are of a 3-electrode (N = 1) interdigital design. Broad bandwidth to the series-resonant transducer is obtained by the use of a lumped-element impedance invertor coupling network. A 9.1 μs delay line is described, which gives 55% 3 dB bandwidth centred at 235 MHz with 25 dB minimum loss and over 50 dB minimum triple-transit suppression.Keywords
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