Filter and multiplexer

A filter comprising:

• a first signal terminal;
• a second signal terminal;
• a filter circuit connected between the first signal terminal and the second signal terminal;
• a substrate having a first surface and a second surface opposite from the first surface, the first signal terminal and the second signal terminal being located on the first surface, at least a part of the filter circuit being located at a side of the second surface;
• a line located closer to the first surface than the filter circuit in the substrate, a first end of the line being connected to one of the first signal terminal and the second signal terminal;
• and
• a ground terminal that is located on the first surface and to which a second end of the line is connected, an area of a region where the line overlaps with the ground terminal being greater than an area of a region where the line overlaps with the one of the first signal terminal and the second signal terminal when the substrate is viewed in a plan view,
• wherein:
• the line is provided in plural,
• the ground terminal is provided in plural so as to correspond to the lines, each of the ground terminals being connected to corresponding one of the lines,
• one of the lines is connected to the first signal terminal, and an area of a region where the one of the lines overlaps with the corresponding ground terminal is greater than an area of a region where the one of the lines overlaps with the first signal terminal when the substrate is viewed in the plan view, and
• another one of the lines is connected to the second signal terminal, and an area of a region where the another one of the lines overlaps with the corresponding ground terminal is greater than an area of a region where the another one of the lines overlaps with the second signal terminal when the substrate is viewed in the plan view.