Super-Directive, Efficient, Electrically Small, Low-Profile Antenna based on Compact Metamaterial

Nebil Kristou (1) , Jean-Francois Pintos (1) , Kouroch Mahdjoubi (2)

1 CEA - Commissariat à l'énergie atomique et aux énergies alternatives
2 IETR - Institut d'Électronique et des Technologies du numéRique

Artificial Magnetic Conductors (AMC) present an attractive substrate for low profile antennas which can take advantage of intrinsic zero reflection phase response to boost antenna performance without the need for thick quarter wave backplane. In this paper, a modified version of the Egyptian Axe Near-Field-Resonant-Parasitic (NFRP) dipole antenna is placed over compact AMC based on square spiral metallic patches and a capacitor network beneath the ground plane. Simulation results demonstrate that the NFRP antenna is electrically small (ka(1)=0.498) with a low-profile (total height = 0.07 lambda(0)) when placed over compact AMC (ka(2)=1.29). It achieves super-directivity (6.52 dBi), high realized gain (5.7 dBi) and high radiation efficiency (83.7%).

Mots clés: Artificial Magnetic Conductor (AMC); metasurface; Electrically Small Antenna (ESA); Super-directive antenna; high gain antenna; low-profile antenna

Domaines: Réseaux et télécommunications [cs.NI]; Electronique

Nebil Kristou, Jean-Francois Pintos, Kouroch Mahdjoubi. Super-Directive, Efficient, Electrically Small, Low-Profile Antenna based on Compact Metamaterial. International Symposium of IEEE-Antennas-and-Propagation-Society / USNC/URSI National Radio Science Meeting, Jul 2017, San Diego, CA, United States. ⟨hal-01737245⟩