An optically transparent, broadband, and highly efficient dual-mode Huygens’ transmit-array antenna based on a single-layer low-loss dielectric substrate
Year: 2025
Type: article
Abstract: An optically transparent, broadband, and highly efficient dual-mode Huygens’ transmit-array antenna is proposed to address the challenge of achieving wide phase shift coverage and low transmission loss in optically transparent millimeter-wave antennas. The design is based on a single-layer low-loss dielectric substrate and metallic thin lines (MTLs). By combining two types of Huygens’ elements, a phase shift range of 383° with a transmission loss below 1.55 dB is achieved at the center frequency of 27 GHz. This approach outperforms the single-mode Huygens’ element by providing a larger phase shift range and smoother phase shift curve, using only two metal layers with minimal metallic area on a single-layer, low-loss, and optically transparent cyclic olefin copolymer (COC) dielectric substrate. Experimental results show good agreement with the simulations, and the fabricated 15 × 15-cell TA demonstrates 94 % optical transparency, a maximum gain of 24.54 dBi, an aperture efficiency of 49.7 %, and a 3-dB bandwidth of 18.5 %.
Source: Materials & Design
Language: English
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,650
Funders: National Natural Science Foundation of China, Southeast University, National University's Basic Research Foundation of China, National Key Research and Development Program of China, Fundamental Research Funds for the Central Universities, National Key Research and Development Program of China Stem Cell and Translational Research
OpenAlex ID: W4409687424