Design and analysis of a metasurface-based wideband wide-angle scanning phased array

Qi, Huanhuan; Liu, Haiwen

doi:10.1088/1361-6463/acd8c6

Cited by 3 publications

(2 citation statements)

References 26 publications

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“…To achieve flexible communication, metasurfaces with multi-beam radiation like 3-beam and 4-beam are developed [25,27,33]. In addition, beam scanning is also realized by coding metasurfaces, which can scan beams within a certain range [34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

High-accuracy beam generation and scanning using reconfigurable coding metasurface

Zhang,

Kong,

Zhou

et al. 2024

J. Phys. D: Appl. Phys.

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Metasurface technology has attracted widespread attention, owing to its remarkable capability to control electromagnetic properties. In this paper, we design a reconfigurable reflective metasurface array operating at 5 GHz for beam generation and scanning based on coding metasurface. Field programmable gate array (FPGA) is equipped for switching the states of PIN (positive-intrinsic-negative) diodes loaded on the metasurface in real-time, resulting in a 180° phase difference. To obtain multi-beam radiation and high-accuracy beam steering, the coding sequence to produce the target radiation pattern is calculated by an algorithm program. We design the fitness function of a genetic algorithm (GA) to optimize the sequence corresponding to the target directions. The simulation result shows that with the accuracy of 1°, the proposed metasurface is capable of generating multi-beam and scanning two-dimensional beams within the 50° range. Further, we fabricate and measure a prototype sample of 15 × 15 elements, which is verified feasible by comparing the measured result and the simulation. This work demonstrates the great potential of applying this reflective metasurface to wireless communication or radar.

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Section: Introductionmentioning

confidence: 99%

High-accuracy beam generation and scanning using reconfigurable coding metasurface

Zhang,

Kong,

Zhou

et al. 2024

J. Phys. D: Appl. Phys.

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“…In this paper, based on our previous designed dualpolarized Vivaldi phased array [18] with tight mutual coupling and wide frequency coverage of 2-8 GHz. Three different kinds of resonators, including the dual-mode hairpin ring resonator (HRR), DGS, and λ/2 shorted-circuit stub, are expatiated and adopted to avoid the RFI from 5 G mobile communication (4.8-5 GHz) and C-band satellite communication (5.9-6.5 GHz) in radio astronomy system.…”

Section: Introductionmentioning

confidence: 99%

Wideband phased array design using hairpin ring resonator (HRR) and DGS for double band-notched performance

Qi,

Liu

2023

J. Phys. D: Appl. Phys.

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In this paper, a wideband Vivaldi phased array with double band-notched performance for radio astronomy is proposed. To address the issues of radio frequency interference from 5 G mobile communication (4.8–5 GHz) and C-band satellite communication (5.9–6.5 GHz) in radio astronomy system, the hairpin ring resonator (HRR), defected ground structure and λ/2 shorted-circuit stub are utilized together to realize the double notched bands with different bandwidth. The resonate mechanism of the proposed HRR is widely investigated, which exhibits independent and controllable resonances. Meanwhile, λ/2 shorted-circuited stub is adopted for the band notched performance. As the current on the stub is induced along the shorted via to the ground, without participating in radiation, thus the notched frequency is not affected by the scan angle. With these novel and dedicated design, the proposed phased array performs double band-notched performance with high skirt selectivity and deep suppression, within the notched band the maximum rejection level is better than 22.7 dB. This is the first work to implement double notched bands in phased array to the authors’ best knowledge. Finally, a prototype composed of 8 × 9 elements is fabricated and measured. The measurements agree well with the simulated ones.

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Design of Broadband Phased Array Feed Using Stereolithographic Additive Manufacturing Heterogeneous Integrating Technology for Fast Radio Burst Observation

Wang,

Liu,

et al. 2024

Adv Eng Mater

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Herein, a stereolithography appearance 3‐D printed phased array feed (PAF) on radio telescopes based on broadband Vivaldi antenna elements covering 4–10 GHz, which meets the requirements of low cost, lightweight, and compact volume, is designed and proposed. The prototype is integrated with two orthogonal linear polarized 4 × 5 arrays, each of which is composed of 20 Vivaldi antenna elements. The distance between adjacent antenna elements is 1/2 λ in both E‐plane and H‐plane. By increasing thickness of the slice elements compared with traditional end‐fire arrays on printed circuit board, the wide‐band impedance matching is realized. The mutual impedance matrix of the dual‐polarization array is calculated and the equivalent circuit of the active and parasitic elements is demonstrated. Due to the orthogonal parasitic elements inserted between the adjacent active antennas, equivalent capacitance is introduced in the tightly coupled array. The measured active voltage standing wave ratio of the manufactured PAF exhibits 4–10 GHz operating bandwidth for both broadside radiation and 45° scan in both E‐ and H‐plane polarization. The proposed wideband PAF has a promising potential application prospect in fast radio burst and other astronomic observation.

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Design and analysis of a metasurface-based wideband wide-angle scanning phased array

Cited by 3 publications

References 26 publications

High-accuracy beam generation and scanning using reconfigurable coding metasurface

High-accuracy beam generation and scanning using reconfigurable coding metasurface

Wideband phased array design using hairpin ring resonator (HRR) and DGS for double band-notched performance

Design of Broadband Phased Array Feed Using Stereolithographic Additive Manufacturing Heterogeneous Integrating Technology for Fast Radio Burst Observation

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