Radio-frequency circuit module

A radio-frequency circuit module comprising:

• a passive element;
• a variable capacitance element;
• a first input/output terminal;
• a second input/output terminal;
• a multilayer body including a plurality of dielectric layers stacked on each other in a stacking direction;
• a control terminal on a bottom surface of the multilayer body and that is configured to supply a control signal to the variable capacitance element;
• and
• a control via-conductor within the multilayer body and configured to connect the control terminal to the variable capacitance element;
• wherein
• the passive element includes a conductor pattern disposed within the multilayer body;
• the variable capacitance element includes a surface-mount component mounted on a top surface of the multilayer body;
• and
• a first external connection terminal defined by the first input/output terminal, a second external connection terminal defined by the second input/output terminal, and a plurality of ground connection terminals defining a ground of a radio-frequency circuit are located on the bottom surface of the multilayer body;
• the first external connection terminal and the second external connection terminal are disposed at different sides of the bottom surface of the multilayer body other than corners of the bottom surface such that the first external connection terminal and the second external connection terminal are sandwiched between the plurality of ground connection terminals in a direction along the sides;
• the plurality of ground connection terminals are connected to the variable capacitance element by a plurality of ground via-conductors, the plurality of ground via-conductors along the stacking direction of the multilayer body for each of the plurality of ground connection terminals;
• the plurality of ground via-conductors are connected to each other by a ground internal connection conductor pattern located on a layer adjacent to a front surface of the multilayer body;
• and
• as viewed in the stacking direction, a control area in which the control terminal and the control via-conductor are located is disposed at a position at which the control area is displaced from the first external connection terminal, the second external connection terminal, the passive element, and a conductor pattern defining the radio-frequency circuit so as to be spatially isolated from the first external connection terminal, the second external connection terminal, the passive element, and the conductor pattern.