Semiconductor device, radio-frequency circuit, and communication apparatus

A radio-frequency circuit comprising:

• a substrate having a first major side and a second major side;
• a semiconductor device comprising:
• a base;
• a first switching unit disposed on the base, the first switching unit having a substantially rectangular shape and including a plurality of first switches;
• and
• an amplifier unit disposed on the base, the amplifier unit including a plurality of amplifier circuits to which a radio-frequency signal is inputted after passing through the first switching unit,
• wherein in a plan view of the base, the first switching unit has four edges including a first edge, a second edge orthogonal to the first edge, and a third edge parallel to the first edge and orthogonal to the second edge, the amplifier unit includes a first region extending along the first edge, a second region extending along the second region, and a third region extending along the third edge, and at least one of the plurality of amplifier circuits is disposed in each of the first region, the second region, and the third region, the semiconductor device being disposed over the first major side of the substrate or inside the substrate;
• a first matching circuit unit disposed over the second major side of the substrate, the first matching circuit unit including a plurality of first matching circuits;
• a filtering unit disposed at a position over the second major side of the substrate and closer to an outer side portion of the substrate than the first matching circuit unit in a plan view, the filtering unit including at least one filter;
• and
• a second matching circuit unit disposed at a position over the second major side of the substrate and closer to the outer side portion of the substrate than the filtering unit in a plan view, the second matching circuit unit including at least one second matching circuit,
• wherein the radio-frequency signal passes through the first switching unit, the first matching circuit unit, the filtering unit, the second matching circuit unit, and the amplifier unit in this order, and
• wherein in a plan view of the second major side, a distance between a center of the semiconductor device and the first matching circuit unit is shorter than a distance between the center of the semiconductor device and the filtering unit, and the distance between the center of the semiconductor device and the first matching circuit unit is shorter than a distance between the center of the semiconductor device and the second matching circuit unit.