Electronic component, ladder filter and communication apparatus

Wave transmission lines and networks – Coupling networks – Electromechanical filter

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Details

310328, 310345, 310348, 310366, H03H 958, H03H 960

Patent

active

061509027

ABSTRACT:
A ladder filter includes an insulation substrate and a plurality of pattern electrodes provided on one major surface of the insulation substrate. A piezoelectric resonator which is a first series resonator, a piezoelectric resonator which is a first parallel resonator, a piezoelectric resonator which is a second parallel resonator and a piezoelectric resonator which is a second series resonator are arranged on the substrate in this order. External electrodes of these piezoelectric resonators are respectively bonded to the lands via a conductive bonding agent and are connected to pattern electrodes, respectively.

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