TY - JOUR
T1 - Fully Analytical Design of Dual-Wire PCB Metagratings for Beam Steering and Splitting
AU - Tan, Zhen
AU - Yi, Jianjia
AU - Chen, Xiaoming
AU - Lin, Menglan
AU - Jiang, Zhi Hao
AU - Werner, Douglas H.
AU - Burokur, Shah Nawaz
N1 - Publisher Copyright:
© 1963-2012 IEEE.
PY - 2023/6/1
Y1 - 2023/6/1
N2 - The printed circuit board (PCB)-type metagrating (MG), a periodic microstrip planar structure with discrete distribution of polarization currents, can realize high-angle wavefront shaping with near-unity efficiency for potential application in high beam-steering antennas or reflectors. For large-angle deflection, only a small number of meta-atoms are required in the MG's period. As such, here, we focus on a reflective PCB MG in the presence of only two meta-atoms, whose complex load impedance densities are explicitly derived from fully analytical expressions. The passive and lossless conditional equations as well as the equations for the power ratio control of the diffraction modes are given, which allows avoiding numerical optimization procedure. Three practical prototypes, including anomalous reflector and beam splitters, are designed, simulated, and measured. The measurement results agree well with the simulation results and are consistent with the theoretical predictions.
AB - The printed circuit board (PCB)-type metagrating (MG), a periodic microstrip planar structure with discrete distribution of polarization currents, can realize high-angle wavefront shaping with near-unity efficiency for potential application in high beam-steering antennas or reflectors. For large-angle deflection, only a small number of meta-atoms are required in the MG's period. As such, here, we focus on a reflective PCB MG in the presence of only two meta-atoms, whose complex load impedance densities are explicitly derived from fully analytical expressions. The passive and lossless conditional equations as well as the equations for the power ratio control of the diffraction modes are given, which allows avoiding numerical optimization procedure. Three practical prototypes, including anomalous reflector and beam splitters, are designed, simulated, and measured. The measurement results agree well with the simulation results and are consistent with the theoretical predictions.
KW - Beam steering/splitting
KW - fully analytical design
KW - metagratings (MGs)
KW - metasurfaces
UR - https://www.scopus.com/pages/publications/85149401677
U2 - 10.1109/TAP.2023.3243729
DO - 10.1109/TAP.2023.3243729
M3 - 文章
AN - SCOPUS:85149401677
SN - 0018-926X
VL - 71
SP - 5452
EP - 5456
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 6
ER -