An Additively Manufactured Deployable Broadband Metasurface Lens Antenna

초록

This paper proposes a deployable broadband millimeter-wave metasurface lens antenna. The deployability is realized by way of the 3D-printed accordion origami structure between the source and the lens. The metasurface lens is designed on the 3D-printed origami with two 3D-printed rectangular gratings and an inkjet-printed I-shaped pattern. The broad bandwidth is achieved with a high transmission efficiency while full 360º phase coverage is obtained from the orthogonal polarization conversion characteristic of the unit cell. The performances of the proposed metasurface lens antenna are numerically and experimentally demonstrated. Its measured 10-dB impedance bandwidth is 24.0–34.9 GHz (38%) and 3-dB gain bandwidth is 25.0–33.5 GHz (30%). Moreover, its overall volume is reduced to 1/3 of its original size when folded for idle mode. Our simple additive manufacturing process can produce the additional advantages of lightweight and low cost. IEEE

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