TY - GEN
T1 - Analysis and Design of a Circularly-Polarized Planar Leaky-Wave Antenna
AU - Comite, Davide
AU - Podilchak, S. K.
AU - Baccarelli, Paolo
AU - Burghignoli, Paolo
AU - Galli, Alessandro
AU - Freundorfer, Alois P.
AU - Antar, Yahia M. M.
PY - 2019/1/14
Y1 - 2019/1/14
N2 - We present the design and analysis of a K-band radially-periodic leaky-wave antenna radiating a circularly polarized broadside pencil beam. The structure is constituted by a metallic strip grating printed on top of a single-layer grounded dielectric slab, and is fed on the bottom by means of a square array of printed surface-wave launchers. The structure is optimized to support the fast n = -1 spatial harmonic, whose behavior has been accurately characterized through a full-wave dispersive analysis developed by means of an in-house method-of-moments (MoM) code. By proper phasing the four independent feeding points, linear or circularly polarized pencil beams can be obtained by exciting a dominant but weakly-attenuated, cylindrical TM leaky-wave mode. In this way, highly-directional broadside pencil beams showing good polarization purity can be obtained. The proposed design is of interest for modern satellite and terrestrial point-to-point communications.
AB - We present the design and analysis of a K-band radially-periodic leaky-wave antenna radiating a circularly polarized broadside pencil beam. The structure is constituted by a metallic strip grating printed on top of a single-layer grounded dielectric slab, and is fed on the bottom by means of a square array of printed surface-wave launchers. The structure is optimized to support the fast n = -1 spatial harmonic, whose behavior has been accurately characterized through a full-wave dispersive analysis developed by means of an in-house method-of-moments (MoM) code. By proper phasing the four independent feeding points, linear or circularly polarized pencil beams can be obtained by exciting a dominant but weakly-attenuated, cylindrical TM leaky-wave mode. In this way, highly-directional broadside pencil beams showing good polarization purity can be obtained. The proposed design is of interest for modern satellite and terrestrial point-to-point communications.
UR - http://www.scopus.com/inward/record.url?scp=85061905024&partnerID=8YFLogxK
U2 - 10.1109/APUSNCURSINRSM.2018.8608844
DO - 10.1109/APUSNCURSINRSM.2018.8608844
M3 - Conference contribution
AN - SCOPUS:85061905024
T3 - IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting
SP - 2133
EP - 2134
BT - 2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting
PB - IEEE
ER -