We report the first Vivaldi arrays monolithically fabricated exclusively using commercial, low-cost, 3-D metal printing (direct laser sintering [DMLS]). Furthermore, we developed one of dual-polarized on a triangular lattice, and compare it to square lattice array. The is attractive because has 15.5% larger cell size compared can be more naturally truncated into wide range aperture shapes such ...

Abstract A graphene-based two ports antipodal Vivaldi antenna with improved gain for THz applications is introduced. The single composed of an a graphene radiator on the top and copper ground plane back total size equal to 108 µm × 84 achieve reconfigurable performance from 3 4.5 THz. reconfigurability validated by changing external DC Volt which in turn changes chemical potential then operatin...

In this study, we present an ultra-wideband full-duplex system constituted of a wideband 4-element Vivaldi array and microstrip-to-slotline baluns. The proposed is characterised by its simplicity, high directivity, self-interference cancellation levels over wide frequency bandwidth. fabricated using basic printed-circuit board (PCB) technology can provide at least 50 dB the bandwidth operation,...