Distributed constant filter, distributed constant line resonator, and multiplexer

A distributed constant line resonator comprising:

• a plurality of distributed constant lines that are arranged in layers in a first direction and are not grounded;
• and
• a via conductor that extends in the first direction, wherein
• each distributed constant line of the plurality of distributed constant lines is connected to the via conductor only at one end portion of the distributed constant line.

A multiplexer comprising:

• a plurality of said distributed constant filters, wherein at least one of the distributed constant line filters includes a distributed constant line filter that includes
• at least one resonator that is not grounded, and
• a first ground electrode that faces the at least one resonator in a first direction, wherein
• each resonator of the at least one resonator is a distributed constant line resonator,
• each resonator of the at least one resonator includes
• a plurality of distributed constant lines that are arranged in layers in the first direction, and
• a via conductor that extends in the first direction, and
• each distributed constant line of the plurality of distributed constant lines is connected to the via conductor only at one end portion of the distributed constant line.