Radio frequency circuit, multiplexer, radio frequency front end circuit and communication apparatus

A radio frequency circuit comprising:

• a multilayer substrate;
• a first input/output terminal and a second input/output terminal on a surface of the multilayer substrate;
• a first series arm circuit and a second series arm circuit in the multilayer substrate, the first series arm circuit and the second series arm circuit being connected in series in a first path, the first path connecting the first input/output terminal and the second input/output terminal;
• a parallel arm circuit in a second path, the second path connecting a node on the first path and ground;
• a first wiring in the multilayer substrate and connected to the first input/output terminal, the first wiring representing a first part of the first path;
• a second wiring in the multilayer substrate and connected to the second input/output terminal, the second wiring representing a second part of the first path;
• and
• a third wiring in the multilayer substrate, the third wiring representing a part of the second path, wherein:
• the parallel arm circuit comprises a first impedance variable circuit configured to vary a transmission characteristic of a radio frequency signal between the first input/output terminal and the second input/output terminal,
• the first wiring and the second wiring are in a different layer of the multilayer substrate than the third wiring, and
• when the multilayer substrate is viewed in a plan view, the third wiring does not overlap with the first wiring and the second wiring.