Bulk wave radiation by group-type-unidirectional-transducers

Rinck, A.; Wagner, K. C.; Russer, P.

doi:10.1109/ULTSYM.1992.276059

rinck_bulk_1992

Title:: Bulk wave radiation by group-type-unidirectional-transducers
Document type:: Konferenzbeitrag
Author(s):: Rinck, A.; Wagner, K. C.; Russer, P.
Abstract:: In the design of broadband low-loss group-type unidirectional transducers (GUDTs) the effect of bulk wave radiation must be considered. It influences the accurate design of the phasing network for the GUDT and increases the insertion loss. In addition, the zeros of the frequency response become less pronounced. The influence of the electrode structure of the GUDT on the cutoff frequency of bulk wave radiation is studied. The ratio of bulk wave radiation to surface wave radiation is calculated for a uniform interdigital transducer (IDT), as well as for an electrode structure of a GUDT on LiNbO3-128rotYX, LiNbO3-YZ, and quartz-STX. The effect of bulk wave radiation on the zeros of the frequency response is shown for several adjustments of the phasing network «
In the design of broadband low-loss group-type unidirectional transducers (GUDTs) the effect of bulk wave radiation must be considered. It influences the accurate design of the phasing network for the GUDT and increases the insertion loss. In addition, the zeros of the frequency response become less pronounced. The influence of the electrode structure of the GUDT on the cutoff frequency of bulk wave radiation is studied. The ratio of bulk wave radiation to surface wave radiation is calculated fo... »
Keywords:: insertion loss, cutoff frequency, LiNbO3, quartz, SiO2, surface acoustic wave filters, ultrasonic transducers, design, frequency response, losses, filter, 15 to 60 MHz, broadband low-loss group-type unidirectional transducers, bulk wave radiation, electrode structure, GUDT, phasing network, surface wave radiation, uniform interdigital transducer
Book / Congress title:: Ultrasonics Symposium, 1992. Proceedings., IEEE 1992
Year:: 1992
Pages:: 83--87 vol.1
Fulltext / DOI:: doi:10.1109/ULTSYM.1992.276059
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mediaTUM Gesamtbestand Einrichtungen Hochschulpräsidium TUM Senior Excellence Faculty

mediaTUM Gesamtbestand Einrichtungen Schools TUM School of Computation, Information and Technology Departments Electrical Engineering Computational Photonics (Prof. Jirauschek)Peter Russer