Patent ID: 9107305
Filing Date: 2015-08-11
Classification: H01F,H01P,H05K

Abstract:
1. A RF module comprising: a terminal connected to an antenna; a core formed in a multilayer substrate configured by stacking conductive layers and insulation layers, the core being one of the conductive layers and serving as a ground layer; a first signal line included in one of the conductive layers adjacent to the core so that a first insulation layer that is one of the insulation layers is interposed between the core and the first signal line, the first signal line being used for transmission of RF signals received and transmitted by the antenna; and a filter that filters the RF signals, wherein the core has a recess portion that faces the first signal line, an outline shape of the recess portion in a plan view being laterally extended in a direction along which the first signal line extends so as to follow the first signal line for at least a prescribed distance in the plan view.