A reconfigurable frequency-notched UWB antenna with split-ring resonators

In this paper, two designs of an ultra-wideband antenna with reconfigurable band notches are presented. The first design is based on several nested complementary split-ring resonators, whereas the second has two identical split-ring resonators. Electronic switches mounted across or along these resonators serve to activate or deactivate their corresponding band notches, thus leading to band-notch reconfigurability. Prototypes of the two designs are fabricated and tested, and their results are compared.