Abstract: A radio frequency circuit includes a power amplifier, which supports Power class 2, a first filter, which is connected to the power amplifier, which supports Power class 3, and which has a passband including the uplink operating band of Band A for FDD, a second filter, which is connected to the power amplifier, which supports Power class 3, and which has a passband including the uplink operating band of Band A, and a third filter, which is connected to the power amplifier, which supports Power class 2, and which has a passband including Band B for TDD. When a transmit signal in Band A, which supports Power class 2, from the power amplifier is to be output, a transmit signal in Band A is split for output to the first filter and the second filter. When a transmit signal in Band B, which supports Power class 2, is to be output, a transmit signal in Band B is output from the power amplifier to the third filter.

Abstract: A high-frequency module includes a mounting substrate having main surfaces 30a and 30b, a first circuit component mounted on the main surface 30a, a second circuit component mounted on the main surface 30b, an external connection terminal arranged on the main surface 30b side relative to the main surface 30a with respect to the mounting substrate, a long via conductor connected to the first circuit component, passing through the mounting substrate, and having a substantially long shape when the mounting substrate is viewed in a plan view, and a metal block arranged on the main surface 30b side relative to the main surface 30a with respect to the mounting substrate and connecting the long via conductor and the external connection terminal. When the mounting substrate is viewed in a plan view, the first circuit component overlaps the long via conductor and the metal block overlaps the long via conductor.

Abstract: Band A (Tx) includes Band C (Tx), and Band B (Rx) includes Band C (Rx). A radio frequency module includes: a switch including a first common terminal and first, second, and third selection terminals; a transmit filter for Band A (Tx) and a receive filter for Band B (Rx), which are connected to the first selection terminal; a transmit filter for Band B (Tx) and a receive filter for Band A (Rx), which are connected to the second selection terminal; and a transmit filter for Band D (Tx) and a receive filter for Band D (Rx), which are connected to the third selection terminal, wherein in the first area, the first common terminal is connected to the first selection terminal and the second selection terminal, and in the second area, the first common terminal is connected to the first selection terminal and the third selection terminal.

Abstract: A high frequency module includes a transmission power amplifier, a bump electrode connected to the transmission power amplifier, and a mounting board on which the transmission power amplifier is mounted, wherein the mounting board includes a via conductor having an elongated shape in the plan view of the mounting board, a board main part placed outside the via conductor, and an insulating part placed inside the via conductor, and the bump electrode and the via conductor are connected while at least partially overlapping each other in the foregoing plan view, and the board main part and the insulating part are each composed of an insulating material of the same kind.

Abstract: A radio-frequency module includes: a transmission power amplifier that includes first and second amplification transistors that are cascade connected to each other; and a mounting substrate that has first and second main surface that face each other, the transmission power amplifier being mounted on the first main surface. The first amplification transistor is arranged in a final stage and has a first emitter terminal. The second amplification transistor is arranged in a stage preceding the first amplification transistor and has a second emitter terminal. The mounting substrate has first to fourth ground electrode layers in order of proximity to the first main surface. The first emitter terminal and the second emitter terminal are not electrically connected to each other via an electrode on the first main surface and are not electrically connected to each other via the first ground electrode layer.

Abstract: A high frequency module includes a transmission power amplifier, a bump electrode connected to a principal surface of the transmission power amplifier and having an elongated shape in a plan view of the principal surface, and a mounting board on which the transmission power amplifier is mounted, wherein the mounting board includes a via conductor having an elongated shape in the plan view, the length direction of the bump electrode and the length direction of the via conductor are aligned in the plan view, and the bump electrode and the via conductor are connected in an overlapping area where the bump electrode and the via conductor overlap at least partially in the plan view, and the overlapping area is an area elongated in the length direction.

Abstract: Band A (Tx) includes Band C (Tx), and Band B (Rx) includes Band C (Rx). A radio frequency module includes: a switch including a first common terminal and first, second, and third selection terminals; a transmit filter for Band A (Tx) and a receive filter for Band B (Rx), which are connected to the first selection terminal; a transmit filter for Band B (Tx) and a receive filter for Band A (Rx), which are connected to the second selection terminal; and a transmit filter for Band D (Tx) and a receive filter for Band D (Rx), which are connected to the third selection terminal, wherein in the first area, the first common terminal is connected to the first selection terminal and the second selection terminal, and in the second area, the first common terminal is connected to the first selection terminal and the third selection terminal.

Abstract: A high-frequency module that performs filtering of signals transmitted and received through an antenna includes an antenna terminal, a transmission terminal, a reception terminal, a reception filter connected between the antenna terminal and the reception terminal, a transmission filter connected between the antenna terminal and the transmission terminal, a first element connected between the antenna terminal and the transmission filter, and a second element connected in series between the transmission terminal and the transmission filter. The first element and the second element are capacitively coupled to each other.

Abstract: A high-frequency module includes a mounting substrate having main surfaces 30a and 30b, a first circuit component mounted on the main surface 30a, a second circuit component mounted on the main surface 30b, an external connection terminal arranged on the main surface 30b side relative to the main surface 30a with respect to the mounting substrate, a long via conductor connected to the first circuit component, passing through the mounting substrate, and having a substantially long shape when the mounting substrate is viewed in a plan view, and a metal block arranged on the main surface 30b side relative to the main surface 30a with respect to the mounting substrate and connecting the long via conductor and the external connection terminal. When the mounting substrate is viewed in a plan view, the first circuit component overlaps the long via conductor and the metal block overlaps the long via conductor.

Abstract: A high frequency module includes a transmission power amplifier, a bump electrode connected to the transmission power amplifier, and a mounting board on which the transmission power amplifier is mounted, wherein the mounting board includes a via conductor having an elongated shape in the plan view of the mounting board, a board main part placed outside the via conductor, and an insulating part placed inside the via conductor, and the bump electrode and the via conductor are connected while at least partially overlapping each other in the foregoing plan view, and the board main part and the insulating part are each composed of an insulating material of the same kind.

Abstract: A radio-frequency module includes: a transmission power amplifier that includes first and second amplification transistors that are cascade connected to each other; and a mounting substrate that has first and second main surface that face each other, the transmission power amplifier being mounted on the first main surface. The first amplification transistor is arranged in a final stage and has a first emitter terminal. The second amplification transistor is arranged in a stage preceding the first amplification transistor and has a second emitter terminal. The mounting substrate has first to fourth ground electrode layers in order of proximity to the first main surface. The first emitter terminal and the second emitter terminal are not electrically connected to each other via an electrode on the first main surface and are not electrically connected to each other via the first ground electrode layer.

Abstract: A high frequency module includes a transmission power amplifier, a bump electrode connected to a principal surface of the transmission power amplifier and having an elongated shape in a plan view of the principal surface, and a mounting board on which the transmission power amplifier is mounted, wherein the mounting board includes a via conductor having an elongated shape in the plan view, the length direction of the bump electrode and the length direction of the via conductor are aligned in the plan view, and the bump electrode and the via conductor are connected in an overlapping area where the bump electrode and the via conductor overlap at least partially in the plan view, and the overlapping area is an area elongated in the length direction.

Abstract: A high-frequency module that performs filtering of signals transmitted and received through an antenna includes an antenna terminal, a transmission terminal, a reception terminal, a reception filter connected between the antenna terminal and the reception terminal, a transmission filter connected between the antenna terminal and the transmission terminal, a first element connected between the antenna terminal and the transmission filter, and a second element connected in series between the transmission terminal and the transmission filter. The first element and the second element are capacitively coupled to each other.