Journal
ELECTRONICS
Volume 8, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/electronics8040379
Keywords
transmitarray antenna; beam scanning; planar lens; discrete lens; tapered matching; 3D-printed antenna; 3D-printing; additive manufactuing
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Funding
- General Directorate for Cultural and Economic Promotion and Innovation of the Ministry of Foreign Affairs and International Cooperation, of the Italian Republic
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In this paper, the design of a beam scanning, 3D-printed dielectric Transmitarray (TA) working in Ka-band is discussed. Thanks to the use of an innovative three-layer dielectric unit-cell that exploits tapered sections to enhance the bandwidth, a 50 x 50 elements transmitarray with improved scanning capabilities and wideband behavior has been designed and experimentally validated. The measured radiation performances over a scanning coverage of +/- 27shown a variation of the gain lower than 2.9 dB and a 1-dB bandwidth in any case higher than 23%. The promising results suggest that the proposed TA technology is a valid alternative to realize a passive multibeam antenna, with the additional advantage that it can be easily manufactured using 3D-printing techniques.
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