Conical resonator formed by winding a tape-shaped band in an overlapping manner into a truncated cone shape

A dipole resonator comprising:

• a first conical resonator comprising a first metal layer and a first dielectric layer and formed in a shape of truncated cone by winding in a partly overlapping manner a tape-shaped band in which the first metal layer and the first dielectric layer are combined, the first conical resonator having an input face on a bottom thereof to which power is supplied, and an open face on a top thereof;
• a second conical resonator comprising a second metal layer and a second dielectric layer and formed in a shape of truncated cone by winding in a partly overlapping manner a tape-shaped band in which the second metal layer and the second dielectric layer are combined, the second conical resonator having an input face on a top thereof to which power is supplied and an open face on a bottom thereof;
• and
• a power supply connected to the input face of the first conical resonator and the input face of the second conical resonator to supply power to the input face of the first conical resonator and the input face of the second conical resonator.