期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 69, 期 4, 页码 2003-2012出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2020.3026922
关键词
Dielectrics; Bandwidth; Gain; Lenses; Broadband communication; Broadband antennas; Permittivity; 3-D print technology; all-dielectric transmitarray; genetic algorithms optimization (GAO); ultrabroadband
资金
- National Natural Science Foundation of China [61661011, 61761012]
- China Postdoctoral Science Foundation [2019M653371]
- GUET Excellent Graduate Thesis Program [17YJPYSS06]
- Key Laboratory of Cognitive Radio and Information Processing, Ministry of Education (Guilin University of Electronic Technology) [CRKL190101]
An ultra broadband all-dielectric transmitarray antenna was designed using genetic algorithm optimization and 3D print fabrication technology, achieving good transmission performance and broadband phase compensation. The all-dielectric structure is easy to manufacture and can enhance radiation gain.
An ultra broadband all-dielectric transmitarray antenna (TA) is designed based on genetic algorithm optimization (GAO) and 3-D print fabrication technology. The array element is composed of all-dielectric pillars with different sizes distributed on the two sides of a substrate. The element is operating in the out-of-band resonance (OBR) zone, whose transmission amplitude is nearly one and the phase can be easily controlled. Afterward, the geometric parameters of the elements on different positions of the TA surface were optimized using generalized Snell's Law-based GAO, which achieved broadband phase compensation and good transmission performance. As the structure is all- dielectric, it can be easily manufactured using 3-D printing technology. The TA was fed by a ridged horn, and the antenna gains are enhanced by 7-12 dB in the measuring band (9-20 GHz). Moreover, the 1 dB steady gain ranges from 14.5 to 20 GHz (up to 29%).
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