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[IEEE 2018 International Conference on Advanced Technologies for Communications (ATC) - Ho Chi Minh City, Vietnam (2018.10.18-2018.10.20)] 2018 International Conference on Advanced Technologies for Communications (ATC) - Wideband Unit-cell for Linearly Polarized X-band Transmitarray Applications
摘要： In this paper, we present a large phase range unit-cell for X-band passive transmitarray antennas. The unit-cell is designed by using the combination of cut-circular patches and cut-ring slots. A 3-bit phase resolution has been optimized to provide eight values of the transmission phase with a step of 45°. The bandwidth of -1 dB transmission magnitude reaches 21.3%. A 10x10-element transmitarray based on the unit-cell configuration has been simulated. The transmitarray antenna provides good radiation patterns and a high aperture efficiency of 52.1%.
关键词： flat lens antenna,Transmitarray,transmitarray antenna,transmitarray unit-cell
更新于2025-09-23 15:22:29
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Unit-Cell loaded with PIN diodes for 1-bit Linearly Polarized Reconfigurable Transmitarrays
摘要： In this letter, a reconfigurable unit-cell for transmitarray antenna working at X-band is presented. It is designed to provide 1-bit phase quantization using p-i-n diodes. The unit-cell is based on multi-layer frequency selective surfaces with the use of two substrates and a combination of a C-patch and a ring slot loaded by a rectangular gap. It is optimized using full-wave electromagnetic simulation and verified by using waveguide simulator. The experimental results show that the unit-cell provides two values of transmission phase with a step of 180° at 11.5 GHz. Furthermore, the unit-cell has a low thickness of 0.19λ0, and is low-cost and easy to fabricate.
关键词： flat lens antenna,Transmitarray antenna,reconfigurable transmitarray antenna
更新于2025-09-10 09:29:36