A Wideband 1 bit 12 × 12 Reconfigurable Beam-Scanning Reflectarray: Design, Fabrication, and Measurement

By Jiaqi Han, Long Li, Guangyao Liu, Zhao Wu, Yan Shi. IEEE Antennas and Wireless Propagation Letters, 2019

209 citations recorded by the source corpus.

In this letter, a wideband 1 bit 12 × 12 reconfigurable beam-scanning reflectarray is designed, fabricated, and measured. The 1 bit reconfigurable element is realized by soldering PIN diode into a slotted metallic square patch. To enhance the bandwidth of 1 bit reconfigurable reflectarray, we choose the central frequency at 5.0 GHz whose phase shift is 200° where the maximum phase shift occurs. Phase difference within 180° ± 20° is realized from 4.7 to 5.3 GHz. Utilizing this wideband element, the 12 × 12 reconfigurable reflectarray antenna is fabricated and measured. A control board that can display phase shift distributions in real time is designed to regulate all PIN diodes independently. Experimental results show that beam scanning within ±50° can be achieved both in xoz and yoz plane at 5.0 GHz. Also, the measured results present that −1 dB gain bandwidth is 8.4% from 4.85 to 5.275 GHz.

Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/3fb08d9aa38ad21805fb2cecdc425d00bf831e6c