2 × 2 Lens Array Antenna Using Square-Bottom Concave-Convex Lens in 300-GHz Band
A $2\times2$ lens array provides a half reduction of antenna height compared to the twice-diameter single-feed lens antenna with an almost similar gain performance due to the same aperture size. However, it generally suffers from a non-uniform amplitude distribution of each lens, which degrades the...
| 总结: | A $2\times2$ lens array provides a half reduction of antenna height compared to the twice-diameter single-feed lens antenna with an almost similar gain performance due to the same aperture size. However, it generally suffers from a non-uniform amplitude distribution of each lens, which degrades the overall lens antenna performance. This study proposes a $2\times2$ lens array antenna composed of square-bottom lenses with a concave-convex lens shaping design to improve the uniformity and aperture efficiency. The measured results of the proposed $2\times2$ square-bottom concave-convex lens array antenna with a lens height of 9.74 mm achieved a boresight gain of 34.9 dBi, and the lowest sidelobe level observed was greater than -12 dB in the 300-GHz band. © 2020 IEEE. |
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| ISSN: | 26376431 |
| DOI: | 10.1109/OJAP.2023.3325055 |