期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 70, 期 7, 页码 5437-5446出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2022.3145506
关键词
Integrated circuit modeling; Admittance; Tensors; Impedance; Couplings; Equivalent circuits; Transmission line matrix methods; 300 GHz; admittance tensor; anisotropy; equivalent circuit; periodic structures; sub-THz; transmitarray (TA)
资金
- National Research Agency (ANR) [ANR 18-CEA25-0009-01]
A novel approach for studying and designing low-cost anisotropic transmitarrays (TAs) at sub-THz frequencies is presented. The array consists of three metal layers and two interleaved dielectric spacers, and a four-port equivalent circuit model is derived to accurately model the anisotropic behavior of the unit cell (UC). The results demonstrate the effectiveness of the design methodology even under strict technological constraints.
A novel approach for studying and designing low-cost anisotropic transmitarrays (TAs) at sub-THz frequencies is presented here. The array comprises three metal layers and two interleaved dielectric spacers. A four-port equivalent circuit model is derived to accurately model the anisotropic behavior of the unit cell (UC). The analysis proves theoretically that nearly perfect transmission and complete phase control can be achieved at the same time. A systematic procedure optimizing the admittance tensor of the inner layer is described for the UC design. A 3 bit TA antenna at 300 GHz is fabricated using a standard printed circuit board (PCB) process. The measured results demonstrate that the design methodology is effective even under strict technological constraints. The antenna achieves a peak gain of 32.2 dBi with 36.5% aperture efficiency and 70.4 GHz of 3 dB bandwidth.
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