A Broadside Efficient Superdirective Compact Array With Internally Loaded Wideband Unit Elements

Hussein Jaafar (1) , Ala Sharaiha (1) , Sylvain Collardey (1)

1 IETR - Institut d'Électronique et des Technologies du numéRique

This paper presents the design of a compact parasitic superdirective array based on a wideband small antenna as a unit element. The unit element is internally loaded with inductive loads to have an optimized impedance bandwidth. Using a wideband antenna as a unit element in the array, ensures high directivity and radiation efficiency even at close distances. The final array design exhibits a maximal directivity of 7.5dBi at 880MHz with 94% radiation efficiency and 5.6% directivity bandwidth.

Mots clés: compact arrays; superdirectivity; wideband small antennas; network characteristic modes

Domaines: Sciences de l'ingénieur [physics]

Hussein Jaafar, Ala Sharaiha, Sylvain Collardey. A Broadside Efficient Superdirective Compact Array With Internally Loaded Wideband Unit Elements. IEEE International Workshop on Antenna Technology (iWAT), Mar 2018, Nanjing, China. ⟨10.1109/iwat.2018.8379218⟩. ⟨hal-01861302⟩