A5007555237- Energy Harvesting in Wireless Networks
- Antenna Design and Analysis
- Wireless Power Transfer Systems
- Microwave Engineering and Waveguides
- Antenna Design and Optimization
- RFID technology advancements
- Full-Duplex Wireless Communications
- Radio Frequency Integrated Circuit Design
- Indoor and Outdoor Localization Technologies
- Advanced MIMO Systems Optimization
- Innovative Energy Harvesting Technologies
- Advanced Antenna and Metasurface Technologies
- Electromagnetic Compatibility and Noise Suppression
- Electromagnetic Simulation and Numerical Methods
- Millimeter-Wave Propagation and Modeling
- Wireless Body Area Networks
- Electromagnetic Compatibility and Measurements
- Superconducting and THz Device Technology
- Gyrotron and Vacuum Electronics Research
- Photonic and Optical Devices
- Ultra-Wideband Communications Technology
- Microwave and Dielectric Measurement Techniques
- Context-Aware Activity Recognition Systems
- Semiconductor Lasers and Optical Devices
- UAV Applications and Optimization
University of Bologna
2016-2025
Laboratori Guglielmo Marconi (Italy)
2015-2024
Marconi University
2015-2024
Universitat Politècnica de Catalunya
2018
Northrop Grumman (United States)
2018
Leibniz Institute for High Performance Microelectronics
2018
University of California, Santa Barbara
2018
Fudan University
2018
Villanova University
2018
Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
2017-2018
In this paper, a rigorous procedure for the circuit-level analysis and design of entire systems, developed to provide power wirelessly, is presented. A unified theoretical approach first introduced, based on two-port-equivalent circuit representation, describe wireless transfer link when transmitter receiver are either in near-field or far-field region reciprocally. This allows one compute straightforward manner system figure merit, namely efficiency. Specific guidelines two configurations...
This invited paper presents potential solutions for tackling some of the main underlying challenges toward developing sustainable Internet-of-things (IoT) devices with a focus on eco-friendly manufacturing, powering, and wireless connectivity next-generation IoT devices. The diverse applications systems, such as smart cities, wearable devices, self-driving cars, industrial automation, are driving up number systems at an unprecedented rate. In recent years, rapidly-increasing...
This paper presents a self-consistent set of algorithms for the numerical computation noise effects in forced and autonomous nonlinear microwave circuits. The analysis relies upon piecewise harmonic-balance method, thus retains all peculiar advantages this technique, including general-purposeness widest sense. simulation capabilities include any kind or circuit operated time-periodic large-signal steady state, as well mixers arbitrary topology. limitations traditional frequency-conversion...
Wireless power transmission (WPT) is an emerging technology that gaining increased visibility in recent years. Efficient WPT circuits, systems and strategies can address a large group of applications spanning from batteryless systems, battery-free sensors, passive RF identification, near-field communications, many others. fundamental enabling the Internet Things concept, as well machine-to-machine since it minimizes use batteries eliminates wired connections. brings together dc circuit...
We are surrounded in our daily lives by a multitude of small, relatively inexpensive computing devices, many equipped with communication and sensing features. From these has evolved the concept "pervasive intelligence" [1], [2], basis from we can envision future world as an Internet Things/Internet Everything (IoT/IoE), terms both consumer IoT/IoE (interconnected devices within individual's environment) Industrial IoT (interconnectedness to improve business-to-business services, mainly...
In this study, we exploit genetic algorithms to design a rectenna required harvest ambient radio‐frequency (RF) energy from four different RF bands in critical (ultra‐low power) conditions. For purpose set of multi‐resonant annular‐ring patch antennas are pixel‐wise described inside an electromagnetic simulator provide the ‘population’ individuals among which tool is able select most adapted one with respect specifications. The further use circuit‐level non‐linear simulation tool, based on...
In this work, a flexible and extensive digital platform for Smart Homes is presented, exploiting the most advanced technologies of Internet Things, such as Radio Frequency Identification, wearable electronics, Wireless Sensor Networks, Artificial Intelligence. Thus, main novelty paper system-level description flexibility allowing interoperability different smart devices. This research was developed within framework operative project HABITAT (Home Assistance Based on Things Autonomy...
This paper proposes a smart wireless power transmission method, based on two-step procedure, exploiting real-time beaming of time-modulated arrays. The sideband radiation phenomenon, which is usually drawback these radiating systems, favorably used for intentional transfer (WPT): in first step to precisely localize the tag be powered and second one perform directive WPT. approach theoretically discussed, then numerical integrates full-wave analysis antenna array with nonlinear simulation...
Radio frequency (RF) energy harvesting and wireless power transmission (WPT) technologies —both near-field far-field—have attracted significant interest for applications RFID systems. We already utilize WPT products in our life it is expected that RF EH far-field systems can drive the future low-power In this article, we initially present a brief historical overview of these technologies. The main technical challenges rectennas transmitters are discussed. Furthermore, paper presents recent...
The theoretical foundations and the numerical performance of an advanced nonlinear circuit simulator based on piecewise harmonic-balance (HB) technique are discussed. exact computation Jacobian matrix for Newton-iteration HB simulation related conversion-matrix fast mixer analysis formulated in a general form. Convergence problems at high drive levels solved by parametric formulation device models coupled with norm-reducing iteration. A physics-based approximation is shown to allow equations...
In this paper, we introduce a new load-modulated two-branch rectifier, designed to dynamically cooperate with an ultra-low power management unit (PMU), interposed between the rectenna and application circuits. The design targets batteryless RF energy harvesting applications typical input ranging from ~ 10 100 μW. Energy is stored in low leakage capacitor. order allow activation discharged states, PMU implements low-voltage start-up stage, whose current consumption specifically optimized for...
In this article, the authors have considered some of most recent RF/microwave circuit and signaling solutions to assist wireless powering maintenance-free devices take a step forward in reliable implementation cooperative smart spaces. This is currently among important requirements for increasingly widespread world pervasive monitoring, including ambient assisting living, structural e-health, agriculture, risk-preponderant working environments. such scenarios, lowduty-cycle, low-power (tens...
In the past few years, many interesting approaches have been studied and designed to advance practical implementation of wireless information power transfer (WIPT) <xref ref-type="bibr" rid="ref1" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">[1]</xref> simultaneous WIPT (SWIPT) rid="ref2" xmlns:xlink="http://www.w3.org/1999/xlink">[2]</xref> , rid="ref3" xmlns:xlink="http://www.w3.org/1999/xlink">[3]</xref> in contexts everyday life, academic...
Providing energy to Internet of Things (IoT) apparatuses is ever more challenging. Humans are increasingly invested in the revolutionary new scenario that experts call <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Industry 4.0</i> , where billions electronic devices interconnected with one another. The operations battery charging or replacement for these will soon become infeasible. As a consequence, radiative wireless power transfer (WPT)...
This paper discusses some modern trends in nonlinear (NL) microwave circuit optimization based on electromagnetic (EM) simulation. In order to keep the CPU time required for a typical design within acceptable limits, number of expensive EM analyses must be kept under tight control. may obtained by resorting systematic implementation algorithmic concepts such as space mapping, domain partitioning, and neural-network modeling passive subnetwork and/or its most critical parts. Although these...
In this paper, we describe a rigorous theoretical approach to the circuit-level nonlinear design of an entire inductive resonant wireless power transfer (IR-WPT) system, including transmitter and receiver subsystems. Starting from novel analytical characterization link, system efficiency is parametrically computed as function set circuital parameters, levels be transferred. These quantities are then used goals inside optimization blocks. By adopting last generation miniaturized enhanced-mode...
In this work, a novel, compact, single-port antenna combining both UWB and UHF bands is presented. This solution proposed for next-generation passive RFID tags, performing communication localization through technology efficient energy harvesting in the band, but it also designed to keep compatibility with previous tags generations. The deployed by means of an Archimedean spiral topology, while at obtained suitably extending outer arms, thus realizing meandered dipole, without affecting...
In this article, we describe a customized 2.45-GHz radio frequency identification (RFID) reader designed to simultaneously perform 3-D tracking of multiple tagged entities (objects or people), static dynamic, in harsh electromagnetic indoor environments. This is obtained by bi-dimensional electronic beam-steering, implementing the monopulse radar concept elevation and azimuth directions, with tags-reader distance estimation based on received signal strength indicator (RSSI) measurements....
In this paper, we develop a new microwave reading system able to select and detect hidden tagged objects, static mobile, in harsh electromagnetic (EM) environments. This is obtained by augmenting standard RF identification reader operations with electronic beam scanning of mono-pulse array. We present detailed description the blocks design, carried out making use nonlinear EM co-simulation. Custom designed components, such as printed-dipole array wide-range phase shifter, are integrated...
In the new scenarios foreseen by Internet of Things (IoT), industrial and consumer systems will be required to detect localize tagged items with high accuracy using cheap, energy autonomous, disposable tags. This paper discusses system-level circuit-level aspects adopted for future generation passive radio-frequency identification (RFID) tags localization capabilities. It is argued that RFID-enabled strategies, combining ultra-wideband (UWB) backscattering communication/localization purposes...
This work proposes the design and implementation of a wearable rectifying filtenna (filtering antenna) which is activated powered wirelessly, to detect presence ethanol solutions. The system implemented on Rogers RT/Duroid 5880 substrate ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\varepsilon _{r} =2.2$ </tex-math></inline-formula> thickness: 0.508 mm), whose flexibility facilitates wearability....
The paper demonstrates for the first time an integrated circuit-level/electromagnetic approach to analysis of time-modulated linear arrays. We developed a multi-domain CAD platform combining rigorous Harmonic Balance-based nonlinear switches with electromagnetic characterization radiating elements. This allows full-wave computation radiated far field envelope which is used display array behavior. resulting simulation tool evaluation some performance aspects system such as power-handling...