Acoustic wave impedance element ladder filter having a reflector integral with a busbar
AssigneeNokia Moile Phones Limited
InventorsVictor Plessky, Serguei Kondratiev
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Abstract
A surface acoustic wave filter provided on a substrate, comprising a transducer and a first reflector for surface acoustic waves at one end of the transducer, the first reflector being integral with conductive material that defines a busbar of the filter.
Claims11
A ladder-type surface acoustic wave impedance element filter provided on a substrate, comprising a transducer and a first reflector for surface acoustic waves at one end of the transducer, the first reflector being integral with a region of conductive material that defines a busbar of the filter.
A surface acoustic wave filter as claimed 1, having first and second input busbars and first and second output busbars which are disposed substantially symmetrically about an axis lying between the input and the output of the filter.
Dependencies are inferred from the claim text.