A5024434592- Advanced Antenna and Metasurface Technologies
- Metamaterials and Metasurfaces Applications
- Antenna Design and Analysis
- Interconnection Networks and Systems
- Modular Robots and Swarm Intelligence
- Advanced Materials and Mechanics
- Cooperative Communication and Network Coding
- Energy Harvesting in Wireless Networks
- Material Properties and Failure Mechanisms
- Elasticity and Wave Propagation
- Opportunistic and Delay-Tolerant Networks
- Innovations in Concrete and Construction Materials
- Adaptive Control of Nonlinear Systems
- Network Time Synchronization Technologies
- Structural mechanics and materials
- Robot Manipulation and Learning
- Advanced Control Systems Optimization
- Advanced Wireless Communication Technologies
- Additive Manufacturing and 3D Printing Technologies
- Water Quality Monitoring Technologies
- Industrial Vision Systems and Defect Detection
- Power Line Communications and Noise
- Flexible and Reconfigurable Manufacturing Systems
- Advanced Control Systems Design
- Manufacturing Process and Optimization
University of Cyprus
2018-2024
Toronto Metropolitan University
2021
Imperial College London
2018
Aristotle University of Thessaloniki
1993-2014
National Technical University of Athens
1986-1989
The realization of a programmable metasurface, enabled by custom application-specific integrated circuit (ASIC), is presented in this paper. ASIC used to provide an adaptive complex impedance load each the metasurface unit cells. Various technology nodes are analyzed for implementation tunable loading elements before one selected final implementation, which four loads placed within circuit, and controlled two digital-to-analog converters. Furthermore, ASICs populate back form mesh network...
Abstract Reconfigurable metasurfaces are man-made surfaces, which consist of sub-wavelength periodic elements—meta-atoms—that can be reconfigured to manipulate incoming electromagnetic waves. However, reconfigurable developed to-date, have limitations in terms loading impedance range, reconfiguration delay and power consumption. Also, these systems costly they require bulky electronics complex control circuits, makes them unattractive for commercial use. Here, we report the first family CMOS...
Metamaterials and metasurfaces have given possibilities for manipulating electromagnetic (EM) waves that in the past would seemed impossible. The majority of metasurface designs are suitable a particular frequency angle incidence. One long-sought objective is design programmable to dynamically manipulate variety incoming EM frequencies angles. In order do this, large-scale mesh networked chips required below metasurface, which apart from adapting electrical impedance properties, also...
A computational model for radio wave propagation through tree orchards is presented. Trees are modeled as collections of branches, geometrically approximated by cylinders, whose dimensions determined on the basis measurements in a cherry orchard. Tree canopies dielectric spheres appropriate size. single row trees was creating copies representative positioned top rectangular, lossy slab that simulated ground. The complete scattering model, including soil and trees, enhanced periodicity...
HyperSurfaces are a merge of structurally reconfigurable metasurfaces whose electromagnetic properties can be changed via software interface, using an embedded miniaturized network controllers, thus enabling novel capabilities in wireless communications. Resource constraints associated with the development hardware testbed this breakthrough technology necessitate controller architectures different from traditional regular Network-on-Chip architectures. The Manhattan-like topology chosen to...
The authors present a robotic system incorporating vision and force/torque sensing for handling flat textile materials describe the results of experiments to measure accuracy reliability variety representative tasks materials.
This paper introduces the use of a diode-connected MOSFET as temperature controlled switch for trapped charge cancellation ISFET sensors. The current flowing through reverse-biased diodes 2.7 aA is negligible at low but reaches 23 fA when heated to 100 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">°</sup> C, which allows readout and high compensation charge. device tied floating gate integrated part source-follower readout. in-pixel feedback...
This article presents the design of a fully-custom integrated circuit (IC) suitable for adjusting complex impedance individual meta-atoms to enable programmability metasurface systems. Implemented in 0.18 μm mixed-signal CMOS process, utilizes four elements, each one with 2 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">16</sup> available states. The elements are optimized between 2–6 GHz, thus covering entire S-band as well half C-band. An...
<p>Reconfigurable metasurfaces are man-made surfaces, which consist of sub-wavelength periodic elements-meta-atoms-that can be reconfigured to manipulate incoming electromagnetic waves. However, reconfigurable developed to-date, have limitations in terms loading impedance range, reconfiguration delay and power consumption. Also, these systems costly they require bulky electronics complex control circuits, makes them unattractive for commercial use. Here, we report the first family CMOS...
<p>The realization of a programmable metasurface, enabled by custom application-specific integrated circuit (ASIC), is presented in this paper. The ASIC used to provide an adaptive complex impedance load each the metasurface unit cells. Various technology nodes are analyzed for implementation tunable loading elements before one selected final implementation, which four loads placed within circuit, and controlled two digital-to-analog converters. Furthermore, ASICs populate back form...
In this paper, the architecture of an application-specific integrated circuit for adaptive metasurfaces is presented. The allows scalable networking over large and reconfiguration each unit-cell with unique complex impedance settings, adjusting metasurface electromagnetic performance. one-chip-design array, includes self-initialization/addressing, configuration-packet routing, network adaptation fault-tolerant dynamic metasurfaces. An asynchronous design adopted power efficiency high...
<p>The realization of a programmable metasurface, enabled by custom application-specific integrated circuit (ASIC), is presented in this paper. The ASIC used to provide an adaptive complex impedance load each the metasurface unit cells. Various technology nodes are analyzed for implementation tunable loading elements before one selected final implementation, which four loads placed within circuit, and controlled two digital-to-analog converters. Furthermore, ASICs populate back form...
<p>Reconfigurable metasurfaces are man-made surfaces, which consist of sub-wavelength periodic elements-meta-atoms-that can be reconfigured to manipulate incoming electromagnetic waves. However, reconfigurable developed to-date, have limitations in terms loading impedance range, reconfiguration delay and power consumption. Also, these systems costly they require bulky electronics complex control circuits, makes them unattractive for commercial use. Here, we report the first family CMOS...