Dipole antennas

This design presents a novel tightly coupled dipole array (TCDA) with a bandwidth of 26.1:1 (VSWR < 3) in the 0.20-5.22 GHz band. By adding a new dual-stopband resistive frequency selective surface (RFSS) between the TCA and the floor, the short-circuit points formed by the floor at the frequency points corresponding to λ = 2h and h (h is the height from the antenna to the floor) are both eliminated.