Comparison of phased array configurations of spiral antennas

Hongzhao Ray Fang (1, 2) , Ramanan Balakrishnan (2, 1) , Régis Guinvarc'H (2) , Koenraad Mouthaan (1)

1 Department of Electrical and Computer Engineering [Univ. Singapore]
2 SONDRA - Sondra, CentraleSupélec, Université Paris-Saclay (COmUE)

A wideband spiral antenna array configuration with interstitially packed spiral antennas is presented. It is compared with a spiral array in the linear and the Wideband Array of Variable Elements Sizes (WAVES) configuration. All three configurations are realized, measured and compared. By packing smaller spiral elements in the interstices of a linear spiral array, we observe an improvement of more than 14 dB in grating lobe rejection compared to the traditional linear configuration when the main beam is pointing at boresight.

Domaines: Sciences de l'ingénieur [physics]; Electromagnétisme

Hongzhao Ray Fang, Ramanan Balakrishnan, Régis Guinvarc'H, Koenraad Mouthaan. Comparison of phased array configurations of spiral antennas. The 9th European Conference on Antennas and Propagation (EuCAP 2015), Apr 2015, Lisbonne, Portugal. pp 1-5. ⟨hal-01266154⟩