Suitability of low-permittivity EBGs to implement superstrates of high-gain resonator antennas is explored. Unit cell of the EBG is a square lattice with circular cross-section rods, with band-gap in the X-band. Permittivity of the rods is typical of PLA plastic filament used in 3D printing, with r = 2.76 and tan = 0.014. EBG cavity made by two identical mirrors separated by a resonating spacing is used to derive the antenna layout. The primary radiator is a rectangular patch, covered by the EBG mirror at a resonating distance, displaying a good gain enhancement. A further resonator antenna is devised, introducing a non-uniform spacing in the EBG rods along each layer of the superstrate. In this new layout, antenna gain and Side Lobe Level are considerably improved.
Ceccuzzi, S., Ponti, C., Schettini, G. (2015). Low-permittivity EBG materials for antenna superstrates. In Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015 IEEE International Symposium on (pp.1106-1107) [10.1109/APS.2015.7304941].
Low-permittivity EBG materials for antenna superstrates
CECCUZZI, SILVIO;PONTI, CRISTINA;SCHETTINI, Giuseppe
2015-01-01
Abstract
Suitability of low-permittivity EBGs to implement superstrates of high-gain resonator antennas is explored. Unit cell of the EBG is a square lattice with circular cross-section rods, with band-gap in the X-band. Permittivity of the rods is typical of PLA plastic filament used in 3D printing, with r = 2.76 and tan = 0.014. EBG cavity made by two identical mirrors separated by a resonating spacing is used to derive the antenna layout. The primary radiator is a rectangular patch, covered by the EBG mirror at a resonating distance, displaying a good gain enhancement. A further resonator antenna is devised, introducing a non-uniform spacing in the EBG rods along each layer of the superstrate. In this new layout, antenna gain and Side Lobe Level are considerably improved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
