Compact, highly integrated electrical module with connection of baw - filter and balancing circuit and method

摘要

Highly integrated electrical module (brain), comprising– a substrate (su) with an upper side,– a cover (de), of the above the upper side of the substrate (su) is arranged, with a to the substrate (su) facing underside,– a on the upper side of the substrate (su) arranged a baw - resonator (r) comprising a layer structure (bs) and a filter circuit fi with the baw - resonator (r) and in the layer structure (bs) a piezoelectric layer is arranged between two electrode layers,– a balancing circuit (bu), which is a connection of capacitive (ke) and inductive (ie) and the elements in series with the filter circuit (fi) is connected,wherein said substrate (su) and the cover (de) parts of a the layer structure (bs) surrounding housing, whose inner sides by the upper side of the substrate (su) and the underside of the cover (de) are formed,characterized in thatat least one circuit element of the balancing circuit (bu) at least partially on an inner side of the housing is arranged.