Compact Superdirective Electric Dipole Array for Far-field Measurement in a Semi-Anechoic Environment

Frédéric Munoz (1) , Serge Bories (1) , Mathieu Caillet (1) , Laurent Lombard (1) , Jean-François Pintos (1)

1 DSYS - Département Systèmes

This paper investigates the theory of superdirective arrays with electric dipoles as elements placed over a metallic reflector. A practical design of such antenna array is designed with a primary concern on the antenna compactness while keeping a relatively wide adaptation bandwidth. This antenna array, contained in a ka = 1.8 Chu sphere, shows a maximum directivity of 11.8 dBi at 80 MHz while being adapted over a 15.6 % fractional bandwidth. The proposed antenna is a good candidate for far-field measurements in presence of specular reflection inside an anechoic chamber below its minimal working frequency.

Domaines: Electromagnétisme

Frédéric Munoz, Serge Bories, Mathieu Caillet, Laurent Lombard, Jean-François Pintos. Compact Superdirective Electric Dipole Array for Far-field Measurement in a Semi-Anechoic Environment. EuCAP 2023 - 17th European Conference on Antennas and Propagation, Mar 2023, Florence, Italy. ⟨10.23919/EuCAP57121.2023.10133657⟩. ⟨cea-04180141⟩