Low frequency bandwidth in connected spiral arrays

Israel D. Hinostroza Saenz (1) , Régis Guinvarc'H (1) , Randy L. Haupt (2)

1 SONDRA - Sondra, CentraleSupélec, Université Paris-Saclay (COmUE)
2 Colorado School of Mines

Connecting the arms of spirals in a dual circularly-polarized array significantly increases the array bandwidth. The connections decreased the low frequency cutoff from 1 GHz (without connections) to 350 MHz of the original array without connections (1 GHz). In this paper, an analysis at even lower frequencies is carried out revealing that the array is still useful at the original low frequency cutoff divided by 10 (100 MHz).

Domains: Engineering Sciences [physics]; Engineering Sciences [physics]; Electromagnetism

Israel D. Hinostroza Saenz, Régis Guinvarc'H, Randy L. Haupt. Low frequency bandwidth in connected spiral arrays. 2016 IEEE International Symposium on Phased Array Systems and Technology (PAST 2016) , Oct 2016, Waltham, United States. ⟨10.1109/ARRAY.2016.7832616⟩. ⟨hal-01449655⟩