Superconducting slot antenna with broadband impedance matching circuit

A superconducting slot antenna with broadband impedance matching circuit has been proposed and studied theoretically. In order to solve the problem of narrow bandwidths peculiar to superconducting small antennas, which originates from the small antenna impedance, we propose a new design theory of the broadband impedance matching circuit for the antenna. Using the theory we designed a three stage impedance matching circuit for a slot antenna using an electromagnetic wave simulator and confirmed the validity of the design theory.