FIELD: communication facilities.
SUBSTANCE: invention relates to the field of piezo engineering and can be used in frequency selection devices, portable communication devices, communication devices of moving objects, navigation systems etc. Technical result is achieved by means of development as multilevel internal, as and external structure of filter, containing inside the ceramic package set of piezoelectric plates and matching condensers. Furthermore, on internal and external surface of filter it is implemented metallisation layer in the form of conductively closed circuit.
EFFECT: manufacturing of diminutive compact high order filters in casing for surface mounting.
7 cl, 5 dwg, 3 ex
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