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A Wide-Angle and High-Efficiency Reconfigurable Reflectarray Antenna Based on a Miniaturized Radiating Elementopen access
- Issue Date
- 1-Jan-2022
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- 1-bit; Asymmetric phase difference; Feeds; Gain measurement; Lighting; Metasurface; phase quantization; Phased arrays; PIN diode; PIN photodiodes; Quantization (signal); Reflector antennas
- Citation
- IEEE Access, v.10, pp.1 - 1
- Journal Title
- IEEE Access
- Volume
- 10
- Start Page
- 1
- End Page
- 1
- ISSN
- 2169-3536
- Abstract
- A wide-angle reconfigurable reflectarray antenna (RRA) was designed and experimentally verified utilizing a miniaturized ring patch efficiently controllable with a single bit. Based on the merits of the miniaturization of the radiating element and an elaborate study of the quantization efficiencies of the asymmetric phase differences between the on/off states of the unit cell by optimizing a reference phase on the metasurface, highly directive beam scanning is achieved in a wide ±60° range in both the <italic>H</italic>- and <italic>E</italic>-planes. Furthermore, the illumination and spillover efficiencies and focal diameter ratio (F/D) are carefully optimized, resulting in a low profile configuration with F/D=0.36. The fabricated RRA prototype was measured at 9.85 GHz (X-band) with the highest aperture efficiency of 28% and a 1 dB gain bandwidth of 530 MHz, respectively. Author
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Related Researcher
- Lee, Jeong Hae
- Engineering (Electronic & Electrical Engineering)