Abstract: This communication introduces a refined design for the Vivaldi antenna, utilizing a nonuniform slot profile based on the Nonuniform Transmission Lines (NTLs) theory to achieve significant ...

Abstract: This letter proposes a Ka-band low-profile tri-mode antenna mechanism based on anisotropic impedance surface (AIS) with magnetic dipole coupling TE1.5,0 resonance. The stack-patch, TM1,0 ...

In higher frequencies, such as around 12 GHz (Ku-band) or 20 GHz (Ka-band), beams are more focused towards smaller areas to overcome the more severe signal attenuation due to atmospheric effects. This ...