A One-Bit Programmable Multi-Functional Metasurface for Microwave Beam Shaping

Author:

Zhang Wu1,Lin Jiahan1,Zheng Zitao1,Gao Yusong1,Tao Jifang2,Shang Wenli34,Zhang Meng34

Affiliation:

1. School of Physics and Material Science, Guangzhou University, Guangzhou 510006, China

2. School of Information Science and Engineering, Shandong University, Jinan 250100, China

3. School of Electronics and Communication Engineering, Guangzhou University, Guangzhou 510006, China

4. Key Laboratory of On-Chip Communication and Sensor Chip of Guangdong Higher Education Institute, Guangzhou 510006, China

Abstract

In this paper, we demonstrate a multi-functional metasurface for microwave beam-shaping application. The metasurface consists of an array of programmable unit cells, and each unit cell is integrated with one varactor diode. By turning the electrical bias on the diode on and off, the phase delay of the microwave reflected by the metasurface can be switched between 0 and π at a 6.2 GHz frequency, which makes the metasurface 1-bit-coded. By programming the 1-bit-coded metasurface, the generation of a single-focus beam, a double-focus beam and a focused vortex beam was experimentally demonstrated. Furthermore, the single-focus beam with tunable focal lengths of 54 mm, 103 mm and 152 mm was experimentally observed at 5.7 GHz. The proposed programmable metasurface manifests robust and flexible beam-shaping ability which allows its application to microwave imaging, information transmission and sensing applications.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Guangdong

Guangzhou Municipal Science and Technology Project

Guangzhou University Graduate Innovation Ability Cultivation Funding Program

National College Student Innovation and Entrepreneurship Training Program of Guangzhou University

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Mechanical Engineering,Control and Systems Engineering

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