Abstract: A radio-frequency module includes a module substrate having main surfaces facing each other, a transmission filter that has a bottom surface and a top surface facing each other and passes a radio-frequency signal, and an external connection terminal disposed on the main surface. The bottom surface faces the main surface and is disposed closer to the main surface than the top surface. The radio-frequency module further includes a metal electrode joined to the top surface.

Abstract: The radio frequency module includes a module substrate, an electronic component disposed on a main surface, a resin member covering at least part of the main surface and at least part of a side surface of the electronic component, and a metal shield layer that is formed on a surface of the resin member and is set to a ground potential. The electronic component has a top surface in contact with the metal shield layer, a bottom surface facing the main surface, a circuit portion formed at a position closer to the bottom surface than to the top surface, and a metal layer formed between the metal shield layer and the circuit portion. The metal layer is a barrier metal.

Abstract: A first filter is prevented from being affected by the coplanarity of a mounting substrate and a degradation of the filter characteristics of the first filter is reduced. A first filter, a second filter, a third filter, and a first switch are mounted on a first principal surface of a mounting substrate. The first filter passes a first high-frequency signal and a second high-frequency signal, the second filter passes a third high-frequency signal, and the third filter passes a fourth high-frequency signal. The first switch is capable of simultaneously connecting the first filter and the second filter to an antenna terminal. In a plan view from a thickness direction of the mounting substrate, the first filter is larger than the second filter and the third filter and located between the second filter and the third filter. A first wire and a second wire are each shorter than a third wire.

Abstract: To provide a radio frequency module and a communication device capable of achieving reduction in height. The radio frequency module includes a mounting substrate and one or more chip inductors. The mounting substrate has a recess at least one end of both ends in a second direction orthogonal to a first direction that is a thickness direction of the mounting substrate. A second chip inductor that is at least one chip inductor of the one or more chip inductors is disposed in the recess.

Abstract: In an optical module (first module (1)), a plurality of semiconductor laser elements (a first semiconductor laser element (21) through a third semiconductor laser element (23)) that output light of wavelengths which are different from each other from light emitting points are mounted on a base member (10). The base member (10) has a reference surface (11) serving as a reference in a height direction (Z) and a mounting surface (a first mounting surface (12a) and a second mounting surface (12b)) on which the semiconductor laser elements are mounted. At least some of the plurality of semiconductor laser elements are different from each other in a height (a first light emission height (TL1) through a third light emission height (TL3)) from a surface in contact with the mounting surface to the light emitting points, and are substantially equal in a height (reference height (HL)) from the reference surface to the light emitting points.

Abstract: Provided is a light source module that includes: a plurality of light sources (2); a plurality of optical components (a plurality of lenses (3) and a plurality of dichroic mirrors (4)) by which light from the light sources (2) is transmitted; and a housing (10) that accommodates the light sources 2 and the optical components (3) and (4), in which in a state where the plurality of optical components (3) and (4) are respectively fixed to one supporting member (first supporting member (36)) and one supporting member (second supporting member (41)), the supporting members are fixed to the housing (10).