A Loaded Tapered Slot Antenna Featuring Stable Wide-Beamwith in Wide Band

Paper in proceeding, 2024

A novel method for minimizing the structure and enhancing the beamwidth of linearly tapered slot antenna (LTSA) is presented. In the proposed design, the basic microstrip-fed LTSA is loaded with a joint action structure (JAS) including dual L-shaped gaps and ABS-metal bonding cavity. Compared to the basic unloaded version, the proposed antenna exhibits improved impedance characteristic in the lower band. Additionally, broad beams in principal planes, high front-to-back (F/B) ratio, and improved gain are also obtained. Simulation results reveal that the proposed antenna with 23.5×23.5mm, provides an impedance bandwidth from 4.15~11.25GHz, while a pattern bandwidth of 62%, more than 116° E- and H-plane 3-dB beamwidths and over 18.0dB F/B ratio are also achieved.