TY - JOUR
T1 - A Simple Method to Design Wideband Circularly Polarized Spherical Multibeam Luneburg Lens Antenna
AU - Lei, Siyuan
AU - Wei, Gao
AU - Han, Kangkang
AU - Li, Xianlei
AU - Qiu, Tiancheng
N1 - Publisher Copyright:
© 2002-2011 IEEE.
PY - 2022/7/1
Y1 - 2022/7/1
N2 - This letter presents a simple method to design the wideband circularly polarized spherical multibeam Luneburg lens (LL) antenna by using three-dimensional (3-D)-printing. The conventional 3-D-printed spherical LL is divided into many cells and each cell is filled by the unit cell with different filling ratios, which breaks the circular symmetry of the LL. The proposed method divides the LL into many layers, and the profile surface equation of each layer is calculated by the ordinary least square method to keep the rotation symmetry of the LL. Then, according to the proposed circularly polarized implement method, the transformation of linear polarization to circular polarization can be realized by selecting a proper radius of LL. The simulated and measured results show that the axial ratios of the proposed multibeam LL antenna are less than 3 dB with good impedance performance and more than 13.8 dBi gain in a relative bandwidth of 31.6%, which demonstrates the validity and simplicity of the presented method.
AB - This letter presents a simple method to design the wideband circularly polarized spherical multibeam Luneburg lens (LL) antenna by using three-dimensional (3-D)-printing. The conventional 3-D-printed spherical LL is divided into many cells and each cell is filled by the unit cell with different filling ratios, which breaks the circular symmetry of the LL. The proposed method divides the LL into many layers, and the profile surface equation of each layer is calculated by the ordinary least square method to keep the rotation symmetry of the LL. Then, according to the proposed circularly polarized implement method, the transformation of linear polarization to circular polarization can be realized by selecting a proper radius of LL. The simulated and measured results show that the axial ratios of the proposed multibeam LL antenna are less than 3 dB with good impedance performance and more than 13.8 dBi gain in a relative bandwidth of 31.6%, which demonstrates the validity and simplicity of the presented method.
KW - Circularly polarized antenna
KW - Luneburg lens (LL)
KW - three-dimensional (3-D)-printing
KW - wideband multibeam antenna
UR - http://www.scopus.com/inward/record.url?scp=85129447129&partnerID=8YFLogxK
U2 - 10.1109/LAWP.2022.3170492
DO - 10.1109/LAWP.2022.3170492
M3 - 文章
AN - SCOPUS:85129447129
SN - 1536-1225
VL - 21
SP - 1423
EP - 1427
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
IS - 7
ER -