Experimental demonstration of a supergain three-dipole-end-fire-array

Alexandre Debard (1, 2) , Antonio Clemente (1, 2) , Lotfi Batel (1, 2) , Christophe Delaveaud (1, 2)

1 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information
2 UGA - Université Grenoble Alpes

This paper presents the experimental validation of a three-dipole array optimized for maximum gain. The complex excitation coefficients associated to the array are calculated using a synthesis procedure based on the array factor. A parasitic array architecture has been selected to implement the proposed antenna solution. The high gain reached (8.6 dBi for a ka of 1.4) shows the interest of the proposed optimization method. Furthermore, it was shown that this optimization method decreases the sensitivity to errors in the dipole excitation coefficients at the cost of a lower directivity compared to the superdirectivity.

Keywords: compact arrays; superdirectivity; supergain; small antennas; end-fire arrays

Domains: Physics [physics]

Alexandre Debard, Antonio Clemente, Lotfi Batel, Christophe Delaveaud. Experimental demonstration of a supergain three-dipole-end-fire-array. EuCAP 2022 - The 16th European Conference on Antennas and Propagation, Mar 2022, Madrid, Spain. ⟨cea-03637068⟩