Patent ID: 9178491
Filing Date: 2015-11-03
Classification: H03H

Abstract:
1. A circuit module, comprising: a device board; an insulating layer arranged on one principal surface of the device board so as to enclose a predetermined area thereof; a cover layer stacked on the insulating layer so as to provide a space enclosed by the insulating layer between the cover layer and the device board; a duplexer including a first filter device and a second filter device, the first and second filter devices having different transmission bands, and the first and second filter devices being provided in the predetermined area within the space; a module board, on which the duplexer is mounted; a first circuit element provided in the cover layer, the first circuit element being connected to the first filter device or the second filter device; a second circuit element provided in or on the module board, the second circuit element being connected to the first filter device or the second filter device; and the cover layer includes a plurality of a resin layers stacked on each other, and an electrode pattern defining the first circuit element provided on each of the plurality of the resin layers.