TY - JOUR
T1 - A Wideband High-Gain Circularly-Polarized Antenna Using Artificial Anisotropic Polarizer
AU - Ding, Chen
AU - Luk, Kwai Man
PY - 2019/10
Y1 - 2019/10
N2 - A novel wideband high-gain circularly-polarized (CP) antenna is proposed and investigated for the 60-GHz high-throughput communication and the 77 GHz automobile radar system. The design consists of a rectangular horn, a hyperbolic lens and an artificial anisotropic polarizer. To minimize the thickness of the polarizer, the properties of the artificial anisotropic material (AAM) for generating CP wave is discussed analytically. Minimal polarizer thickness and the corresponding component ratio are provided mathematically. In comparison with other approaches, the proposed design achieves a relatively high-gain and wideband performance with a minimal thickness. The antenna exhibits a wide impedance bandwidth of more than 39% (VSWR < 2) from 55 to 82 GHz and a wide axial ratio (AR) bandwidth of more than 32% (AR < 3 dB) from 56 to 77 GHz. The average gain is 17 dBic. Good unidirectional radiation characteristics are achieved with low fabrication cost. In addition, the off-body lens and the polarizer could be directly migrated to other radiating sources with the concrete analytical guidance for polarizer design.
AB - A novel wideband high-gain circularly-polarized (CP) antenna is proposed and investigated for the 60-GHz high-throughput communication and the 77 GHz automobile radar system. The design consists of a rectangular horn, a hyperbolic lens and an artificial anisotropic polarizer. To minimize the thickness of the polarizer, the properties of the artificial anisotropic material (AAM) for generating CP wave is discussed analytically. Minimal polarizer thickness and the corresponding component ratio are provided mathematically. In comparison with other approaches, the proposed design achieves a relatively high-gain and wideband performance with a minimal thickness. The antenna exhibits a wide impedance bandwidth of more than 39% (VSWR < 2) from 55 to 82 GHz and a wide axial ratio (AR) bandwidth of more than 32% (AR < 3 dB) from 56 to 77 GHz. The average gain is 17 dBic. Good unidirectional radiation characteristics are achieved with low fabrication cost. In addition, the off-body lens and the polarizer could be directly migrated to other radiating sources with the concrete analytical guidance for polarizer design.
KW - Artificial anisotropic polarizer
KW - circular polarization
KW - wide bandwidth
KW - high gain
KW - 3D print
KW - 60-GHz
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U2 - 10.1109/TAP.2019.2923739
DO - 10.1109/TAP.2019.2923739
M3 - RGC 21 - Publication in refereed journal
SN - 0018-926X
VL - 67
SP - 6645
EP - 6649
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 10
ER -