A5090383408- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Optimization
- Advanced MIMO Systems Optimization
- Wireless Body Area Networks
- Cooperative Communication and Network Coding
- Advanced Materials and Mechanics
- Advanced Wireless Communication Technologies
- Microwave Engineering and Waveguides
- Full-Duplex Wireless Communications
Huawei Technologies (China)
2023-2024
Tsinghua University
2019-2020
A 1 bit reconfigurable reflectarray antenna with independent dual-band phase controlling and large-angle beam scanning capabilities is designed experimentally verified. By exploiting polarization orthogonality, the proposed element achieves shift at 12.5 GHz for x-polarization 14.25 y-polarization only two p-i-n diodes in each element. The structure biasing circuits are optimized. Low magnitude loss, cross polarization, out-of-band interference prototype 256 elements fabricated tested....
In this article, a dual-polarized 2-bit electronically reconfigurable reflectarray (RRA) is proposed for 5G beam scanning applications. By introducing two parallel transmission lines and T-junction, only p-i-n diodes are used to generate phase quantization analyzed verified. Based on concept, novel RRA element presented that makes use of an aperture-coupled patch microstrip delay behind its ground plane. Only loaded each line realize the quantization. Two orthogonal linear polarizations...
The performance of holographic multiple-input multiple-output (MIMO) communications, employing two-dimensional (2-D) planar antenna arrays, is typically compromised by finite degrees-of-freedom (DOF) stemming from limited array size. DOF constraint becomes significant when the element spacing approaches approximately half a wavelength, thereby restricting overall MIMO systems. To break this inherent limitation, we propose novel three-dimensional (3-D) that strategically explores untapped...
Terahertz (THz) high gain antennas with electronic beam-scanning capability have been long required in various modern applications. In this paper, a novel reconfigurable reflectarray antenna (RRA) at 0.3 THz 16×16 individually controlled 1-bit phasing elements is proposed. The element consists of shorted bow-tie microstrip patch and double-channel heterostructure HEMT the middle. Electronic phase control can be achieved by switching state HEMT. simulation verifies its wideband low...
A 1-bit reconfigurable reflectarray (RRA) element with independent dual-band phase controlling capability is designed and analyzed. Two PIN diodes are placed at the orthogonal sides of rectangular microstrip patch. By switching them ON or OFF individually, resonant property patch tuned, thus, 180° difference 12.5 GHz 14.25 achieved. sets biasing circuits that able to isolate DC/RF signals effectively both frequencies elaborately designed. Element simulations demonstrate good performance...
Reconfigurable antennas can provide superior performance over legacy antennas, since they dynamically reshape the channels by configuring optimal operation mode. In this paper, we focus on effectiveness of applying reconfigurable in an industrial multi-user MIMO system. Firstly, propose a new antenna structure that realize dual-polarization independent control modes. Then, capture relationship between cell throughput with modes based which mode selection problem is formulated. Additionally,...
This paper introduces an innovative quantum-inspired method for beamforming (BF) optimization in multiple-input multiple-output (MIMO) arrays. The leverages the simulated bifurcation (SB) algorithm to address complex combinatorial problem due quantized phase configuration. We propose novel encoding techniques high-bit quantization, which are then mapped into Ising spins. enables efficient construction of Hamiltonians and subsequent BF patterns. results clearly demonstrate that SB optimizer...
The performance of holographic multiple-input multiple-output (MIMO) communications, employing two-dimensional (2-D) planar antenna arrays, is typically compromised by finite degrees-of-freedom (DOF) stemming from limited array size. DOF constraint becomes significant when the element spacing approaches approximately half a wavelength, thereby restricting overall MIMO systems. To break this inherent limitation, we propose novel three-dimensional (3-D) that strategically explores untapped...