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An Integrated Ring-Based Magnetic-Resonance Near-Field Super-Resolution Sensing Model With Effective Second Mode Suppression
IEEE Transactions on Microwave Theory and Techniques
Year: 2025 | Early Access Article |
Subwavelength aperture imaging exhibits brilliant applications of electromagnetic probing and imaging with super-resolution; however, its response signal intensity is inversely proportional to the near-field resolution. Magnetic resonance inducing subwavelength aperture has been experimentally demonstrated greatly increasing the response signal level with resonance perturbation. Here, we introduce...Show More
Broadband Characterization of Liquids at Millimeter Waves by Using an U-Shaped Bent Waveguide
Chenhao Yin;Jinkai Li;Lili Fang;Giovanni Gugliandolo;Nicola Donato;Li Wang;Giovanni Crupi;Houjun Sun;Xiue Bao
2024 17th United Conference on Millemetre Waves and Terahertz Technologies (UCMMT)
Year: 2024 | Conference Paper |
This paper proposes an U-shaped bent waveguide for liquid characterization. Compared to straight rectangular waveguide, it is more simple for liquid sensing, without using special liquid holder. Additionally, it requires no complex de-embedding process, consequently improving characterization convenience and accuracy. Two types of liquids are put at the sensing area and then the liquid-loaded sens...Show More
Electromagnetic Characterization of Materials Based on Genetic Algorithm and Prior Knowledge
2024 IEEE MTT-S International Wireless Symposium (IWS)
Year: 2024 | Conference Paper |
This paper proposes a method for extracting the complex permittivity of materials, utilizing genetic algorithm optimization and prior knowledge. S-parameters of the grounded coplanar waveguide with an upper cover containing the material under test are obtained through simulation in CST. Then, the genetic algorithm optimization procedure of a finite element method (FEM) software is utilized to mini...Show More
A Compact Dual-Circularly Polarized Patch Antenna With Wide Axial Ratio Beamwidth Based on Square-Ring Coupled Feeding
2024 IEEE MTT-S International Wireless Symposium (IWS)
Year: 2024 | Conference Paper |
A compact dual-circularly polarized (CP) patch antenna with wide axial ratio beamwidth (ARBW) based on square-ring coupled feeding is proposed. A meandered patch and a shorting wall are introduced for size reduction and ARBW enhancement. A square ring structure etched below the patch is used to feed through capacitive coupling. A quadrature hybrid, integrated into the feed network, introduces a 90...Show More
An Overview of the Impact of the Temperature on the Small- and Large-Signal Performance of 0.15-μm Microwave GaN HEMTs
Giovanni Crupi;Valeria Vadalà;Gianni Bosi;Giovanni Gugliandolo;Xiue Bao;Rocco Giofrè;Antonio Raffo;Paolo Colantonio;Nicola Donato;Giorgio Vannini
2024 IEEE MTT-S International Wireless Symposium (IWS)
Year: 2024 | Conference Paper |
The goal of the present work is to study the influence of the thermal effects on the small- and large-signal characteristics of gallium nitride (GaN) high-electron-mobility transistor (HEMT) devices by using an extensive campaign of measurements. The studied devices were manufactured using a 0.15-μm process on silicon carbide (SiC) substrate. Experiments carried out on the three HEMTs with differe...Show More
An overlapping Sub-Aperture Method for Unified Near-Field and Far-Field Localization
2024 IEEE MTT-S International Wireless Symposium (IWS)
Year: 2024 | Conference Paper |
The topic of positioning is challenging and complex. Many closed-form positioning solutions have been suggested, utilizing modified polar representation (MPR) to account for measurement error and sensor position errors. High sensor position errors can significantly reduce the accuracy of target location. In this paper, a novel overlapping sub-aperture (OSA) localization method is designed to mitig...Show More
Design of a Microfluidic Millimeter Wave Chip for Magnetic Beads based Biosensing
Linxiang Shao;Yaxuan Chen;Zhaoying Li;Chaoran Xing;Zeyu Wang;Minghe Du;Jinkai Li;Lianggong Wen;Xiue Bao
2024 IEEE MTT-S International Wireless Symposium (IWS)
Year: 2024 | Conference Paper |
A novel method utilizing a millimeter wave and microfluidic sensor for testing magnetic beads solutions is introduced and experimentally validated for the first time. The sensor based on resonant principles is composed of an easily integrable coplanar waveguide (CPW) and a sprial-shaped defect ground structure (DGS). The transmission parameters of the sensor are simulated and analyzed when the mat...Show More
A Dual-Band, Polarization-Insensitive, Flexible Rectifying Metasurface for RF Energy Harvesting
2024 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2024 | Conference Paper |
In this paper, a dual-band, polarization-insensitive and flexible rectifying metasurface (RMS) is proposed for radio frequency (RF) energy harvesting. The RMS system is matching-free due to its Schottky-diode loaded unit cells. By introducing the gaps between parallel metasurface resonator, not only can dual-band feature be obtained, but direct impedance matching between diodes and metasurface can...Show More
Design of a Compact Planar Magneto-Electronic Circularly Polarized Antenna
2024 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2024 | Conference Paper |
A compact magneto-electronic circularly polarized antenna realized by printed circuit board is proposed. First, a pair of magnetic dipoles with $90^{\circ}$ phase difference is formed by an infinite balanced structure; second, a pair of electronic dipoles are placed above the magnetic dipoles with probe feed. A Wilkinson divider is designed to provide two signals with equal amplitude and $90^{\cir...Show More
Extraction of Complex Permittivity and Complex Permeability of Liquids by Using a Grounded Coplanar Waveguide with Upper Shielding
Yutao Yang;Haoyun Yuan;Liming Si;Giovanni Crupi;Li Wang;Giovanni Gugliandolo;Nicola Donato;Houjun Sun;Xiue Bao
2024 IEEE International Symposium on Medical Measurements and Applications (MeMeA)
Year: 2024 | Conference Paper |
This paper proposes a method for extracting the complex permittivity and complex permeability of liquid ma-terials, utilizing sensing structure based on a grounded copla-nar waveguide with upper shielding (GCPWG) and a genetic algorithm (GA). The scattering (S-)parameters of the GCPWG sensing area that is loaded with the material under test (MUT) are obtained through simulation in the CST Studio S...Show More
The Influence of Calibration Materials' Dielectric Properties on Deembedding Accuracy for Liquid Characterization
2024 15th Global Symposium on Millimeter-Waves & Terahertz (GSMM)
Year: 2024 | Conference Paper |
The calibration and de-embedding outcomes of utilizing different liquid combinations as standards are studied. Using standards with significant disparities aids in minimizing calibration errors, whereas employing standards with similar liquid dielectric constants creates significant calibration discrepancies. Optimal calibration liquids consist of a high permittivity liquid, a low permittivity liq...Show More
Highly Compact Time-Domain Borehole Radar With Time-Varying Gain Equivalent Sampling
Li Wang;Xiue Bao;Changbin Liu;Wenchao Yan;Bici Jiang;Yafei Wang;Liming Si;Dominique Schreurs;Zhensheng Shi;Anxue Zhang
In this article, a compact time-domain (TD) microwave system for borehole radar (BHR) is developed based on cost-effective microwave hardware. The time-varying gain equivalent sampling (TVGES) technique is proposed in the receiver, which consequently achieves an equivalent sampling rate of up to 33.3 GSa/s and a bandwidth of 618 MHz, enabling undistorted sampling of ultrawideband (UWB) pulse signa...Show More
Artificial Neural Network Modeling of Microwave Sensors for Dielectric Liquids Characterization
Giovanni Gugliandolo;Zlatica Marinković;Xiue Bao;Cristiano De Marchis;Filippo Battaglia;Mariangela Latino;Giuseppe Campobello;Giovanni Crupi;Nicola Donato
The aim of this study is to develop a modeling procedure based on using artificial neural networks (ANNs) for predicting the frequency-dependent behavior of a microwave split-ring resonator (SRR) used for the dielectric characterization of liquid samples. The SRR device was designed and fabricated using the inkjet printing technology and, then, calibrated by means of water/ethanol mixtures with va...Show More
Defect Modeling During the SLM Process for Manufacturing Microwave Devices
Shuai Li;Xiue Bao;Giovanni Gugliandolo;Haoyun Yuan;Jinkai Li;Linxiang Shao;Minghe Du;Nicola Donato;Zlatica Marinkovic;Giovanni Crupi;Lili Fang;Liming Si;Houjun Sun
This paper intends to address the issue of crack formation and other flaws during the selective laser melting (SLM) additive manufacturing process. To achieve this objective, image processing, 3D modeling, and deep-learning techniques are employed to generate a 3D defect model, while data statistics are utilized for enhancing and optimizing the entire additive manufacturing process, including adju...Show More
An Improved DOA Estimation Method Based on Compressed Sensing for the Distributed Array
2023 6th International Conference on Information Communication and Signal Processing (ICICSP)
Year: 2023 | Conference Paper |
Cited by: Papers (1)
Direction of Arrival (DOA) estimation is important for target detection in the distributed array, however, traditional DOA algorithms based on subspace, such as Multiple Signal Classification algorithm (MUSIC) and Estimating Signal Parameter via Rotational Invariance Techniques (ESPRIT), cannot be applied directly to distributed array since the emergence of unwanted grating lobes will make the est...Show More
A Novel Liquid-Filling Based Beam-Steering Technology for a Waveguide Slot Array Antenna
Linxiang Shao;Minghe Du;Shuai Li;Haoyun Yuan;Meng Zhang;Lili Fang;Jianjun Ma;Liming Si;Houiun Sun;Xiue Bao
A new approach to achieve beam steering at a fixed frequency by adjusting the amount of the filled dielectric material is presented. It is realized based on a standard waveguide with longitudinally slotted on the broad wall, where a layered structure is designed. By selectively filling the proposed layered structure with the low-loss transform oil $(\epsilon_{r}=2.2)$, the effective permittivity o...Show More
A Double-Band Resonance Sensor for Complex Permittivity Characterization of Liquids
M. Du;S. Li;L. Shao;H. Yuan;J. Ma;L. Si;H. Sun;X. Bao;M. Zhang;J. Bao;B. Nauwelaers
2023 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)
Year: 2023 | Conference Paper |
Cited by: Papers (1)
A high sensitivity double-band resonance sensor based on a planar microstrip structure is proposed for complex permittivity measurements of liquids. Two split-ring resonators (SRRs) are combined with a microstrip line to expand the operating bandwidth. The sensor employs an array of interdigital capacitors (IDCs) to achieve higher sensitivity. Validation tests conducted on methanol-ethanol liquid ...Show More
Design of a Low-pass Filter Based on the Through-Silicon-Via Structure
Zhibo Zhao;Xiue Bao;Zeyu Wang;Haoyun Yuan;Jinkai Li;Lili Fang;Houjun Sun
2023 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2023 | Conference Paper |
The paper provides a novel low-pass filter by using the through-silicon-via (TSV) based 3D integration technology. It is designed based on a typical low-pass Butterworth filter, which consists of two inductors and one capacitor. In order to reduce the consumination of chip area, both the inductor and the capacitor are desinged based on the TSV techniques. Simulation results have validated that the...Show More
A Low Sidelobe Wideband Slotted Antenna Array Fed by High-Order Modes Resonant Cavity
Haoyun Yuan;Xiue Bao;Jinkai Li;Zeyu Wang;Zhibo Zhao;Liming Si;Houjun Sun
2023 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2023 | Conference Paper |
A low sidelobe wideband waveguide slotted cavity antenna is presented for K-band wireless communication. By exciting the radiation slots in high-order modes, the antenna abandons the back cavity structure, thereby reducing the profile height. And due to the combination of multiple high-order modes, it can obtain a wide impedance bandwidth of 21.9% (17.9 to 22.3 GHz). Then, an 16×16 array antenna w...Show More
SLM Printed Wideband Circularly Polarized Multilayer Antenna Array With Reduced Impact by the Manufacturing Imperfection
Haoyun Yuan;Zhuangzhuang Liu;Li Wang;Liming Si;Houjun Sun;Giovanni Crupi;Dominique Schreurs;Xiue Bao
A novel three-dimensional (3-D)-printed wideband circularly-polarized (CP) waveguide based $4\times4$ slotted antenna array is proposed for wireless communications in the paper. For radiating CP waves, several additional eigenmodes are introduced by designing several additional layers. By adjusting the multiple resonances within the cavity, the axial ratio (AR) bandwidth can be enhanced, and the...Show More
A Wideband Time-Domain Microwave System for Breast Cancer Screening
2023 International Applied Computational Electromagnetics Society Symposium (ACES-China)
Year: 2023 | Conference Paper |
Due to its unsafety and high price, computed to-mography (CT) technology is difficult to be widely used in breast cancer screening. This paper proposes a time-domain microwave system based on ultra-broadband pulses for breast cancer screening. The system is mainly composed of several antennas, a pulse generator, an oscilloscope, a turntable, and a computer. Acrylic cylinders with different specifi...Show More
A Normalization Method for Unified Near-Field and Far-Field Localization
2023 IEEE MTT-S International Wireless Symposium (IWS)
Year: 2023 | Conference Paper |
Cited by: Papers (1)
An improved normalization method for unified near- field and far-field localization is proposed. The localization problem could be solved in the modification polar coordinate system (MPR) by firstly linearizing the nonlinear equations and using the weighted least squares (WLS) to obtain a coarse solution, then the coarse solution is tightened by a new constraint about the correlation between signa...Show More
Development of a Compact Subnanosecond Pulse Transmitter With a Single Low-Power Supply
Li Wang;Xiue Bao;Yaobo Liu;Shuai Li;Dominique Schreurs;Liming Si;Anxue Zhang;Zhensheng Shi
This letter proposes a step recovery diode (SRD)-based compact subnanosecond pulse transmitter. Working as a charge switch, the SRD can cut off the current of an inductor, generating a subnanosecond pulse. Only one single low-power supply is used in the transmitter, while a large amplitude that greatly exceeds the power supply voltage can be generated. Simulation and experimental results have vali...Show More
Adaptive Microwave Ablation System for Localized Tumor Treatment
Li Wang;Xiue Bao;Changbin Liu;Yafei Wang;Liming Si;Dominique Schreurs;Anxue Zhang
Though microwave ablation (MWA) technology has shown obvious advantages, it has the problem that the ablation zone is not sufficiently localized. As a result, normal tissue might be inevitably damaged during the ablation process. To solve this problem, the comprehensive MWA theory is first analyzed in this article, and then, a frequency-adaptive ablation approach is proposed and verified by simula...Show More
A De-embedding Method for Accurately Characterizing the Dielectric Property of Biological Liquids
2022 3rd International Conference on Electronics, Communications and Information Technology (CECIT)
Year: 2022 | Conference Paper |
Cited by: Papers (2)
An inexpensive calibration method is designed for accurate liquid characterization for biological and medical applications. Compared to the traditional two-step calibration procedure, the proposed method is more flexible and user-friendly. The calibration and de-embedding standards can be flexibly designed based on the structure of the test fixture and the sensor where the liquid under test (LUT) ...Show More
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