A 1‐bit reconfigurable metasurface antenna for ground penetrating radar application

Abstract

A 1‐bit reconfigurable metasurface antenna for Ground penetrating radar (GPR) application is proposed. The element is loaded with one PIN diode, which can be electronically controlled to generate two states with 200° reflection phase difference at 2.0 GHz. The two states are regarded as “1” and “0.” Based on the proposed element, a 10 × 10 reconfigurable metasurface is designed. Besides, a digital control board is used to control the state of element. A reconfigurable metasurface antenna is simulated and fabricated. The simulated and experimented results indicate that the proposed antenna can achieve ±40° beam scanning with a gain tolerance of 3 dB and the maximum gain of 16.7 dBi. In addition, the beam‐forming performance can be achieved, such as multibeam. These properties ensure the proposed antenna has great potential in GPR and microwave imaging systems.

A 1-bit reconfigurable intelligent metasurface-based antenna design for 5G application

“…Based on the previous research [28], the digital control board is designed to control the DC-biasing voltage on each PIN diode to achieve reconfigurability. In this design, the meta-atoms have the same voltage in the same unit cell.…”

“…It indicates that this proposed RIS-based antenna has a high peak gain, a small size for the miniaturization requirements, and a large beam scanning area. Especially, compared to the previous research [28], the phase compensation mechanism is optimized in this design, and the optimization of the 2 × 2 meta-atoms as a unit cell is proposed to simplify the bias network. In addition, the frequency selection is to fit the 2023 World Radiocommunication Conference (WRC-23) application background and provide data support for the discussion of WRC2023.…”