A5006132595- Microwave Engineering and Waveguides
- Energy Harvesting in Wireless Networks
- Electromagnetic Simulation and Numerical Methods
- RFID technology advancements
- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Wireless Power Transfer Systems
- Advanced MEMS and NEMS Technologies
- Electromagnetic Compatibility and Noise Suppression
- Photonic and Optical Devices
- Radio Frequency Integrated Circuit Design
- Acoustic Wave Resonator Technologies
- Advanced Sensor and Energy Harvesting Materials
- Electromagnetic Scattering and Analysis
- Innovative Energy Harvesting Technologies
- Antenna Design and Optimization
- Modular Robots and Swarm Intelligence
- Gyrotron and Vacuum Electronics Research
- Semiconductor Lasers and Optical Devices
- Microwave and Dielectric Measurement Techniques
- Millimeter-Wave Propagation and Modeling
- Indoor and Outdoor Localization Technologies
- Non-Invasive Vital Sign Monitoring
- Bluetooth and Wireless Communication Technologies
- Soil Moisture and Remote Sensing
University of Perugia
2016-2025
ORCID
2021
University of Pisa
2016
Vita-Salute San Raffaele University
2012
Ospedali Riuniti di Ancona
1991
This paper introduces a novel compact ultralightweight multiband RF energy harvester fabricated on substrate. The proposed rectenna is designed to operate in all recently released LTE bands (range 0.79-0.96 GHz; 1.71-2.17 and 2.5-2.69 GHz). High compactness ease of integration between antenna rectifier are achieved by using topology nested annular slots. features an RF-to-dc conversion efficiency the range 5%-16% for available input power -20 dBm interest, which increases up 11%-30% at -15...
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...
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...
Energy harvesting is well established as one of the prominent enabling technologies [along with radio-frequency identification (RFID), wireless power transfer, and green electronics] for pervasive development Internet Things (IoT). This paper focuses on a particular, yet broad, class systems that falls in IoT category large area electronics (LAE). represented by “smart surfaces.” The paper, after an introductory overview about how smart surfaces are collocated LAE scenario, first deals...
Radio-Frequency IDentification (RFID) devices and sensors are among the main innovations of last years, with an enormous impact on Internet Things (IoT) physical communication layer as well logistics robotics. The aim present paper is to review technologies available for RFID sensors, identify corresponding state-of-the-art when these applied realistic IoT scenarios. Firstly, concepts radio backscattering harmonic analyzed, highlighting pros cons each approach. Then, solutions reported,...
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...
In this paper, the bonding-wire interconnection has been studied from points of view its modeling and electrical characterization. Both singleand double-wire structures have considered, latter under assumption parallel wires. Two models bonding wire are discussed. First, finite-difference time-domain (FDTD) method is proposed for rigorous analysis such structures. This uses a suitable discretization technique, which accounts curvature by means polygonal approximation. A quasi-static model...
Over the last decade, radio frequency identification (RFID) systems have been increasingly used for and object tracking due to their low-power, low-cost wireless features. In addition, explosive demand ubiquitous rugged compact sensors Internet-of-Things, ambient intelligence, biomonitoring/ quality-of-life application has sparked a plethora of research efforts integrate with an RFID-enabled platform. The rapid evolution large-area electronics printing technologies (e.g., ink-jet gravure...
A three-dimensional (3-D) implementation of the lumped-element finite-difference time-domain (FDTD) algorithm has been carried out. To accomplish proper description device dynamic responses, code incorporates accurate models lumped bipolar devices, including nonlinear capacitances associated with pn and Schottky junctions. The system arising from discretized equations is solved by means an iterative Newton-Raphson algorithm, convergence properties which are sensitive to value simulation time...
This paper summarizes the most important technologies, concurrently participating to build technological platform needed for a realistic implementation of Internet Things (IoT) paradigm. At present state evolution IoT, these technologies are mostly: Radio Frequency IDentification (RFID), Green Electronics (GE), Wireless Power Transfer (WPT) and Energy Harvesting (EH). contribution briefly explains reason that, shows collection scientific contributions which can be seen as examples. The deep...
In this work, a new technique to fabricate microwave circuits in paper substrates is proposed. This relies on copper adhesive tape that shaped by photo-lithographic process and then transferred the hosting substrate means of sacrificial layer. Microstrip lines have been electromagnetically characterized accounting also for layers. Experimental results show an insertion loss better than 0.6 dB/cm at 10 GHz.
This letter proposes wearable electronic modules on textile, suitable for garment integration, based antennas magnetically coupled to the active circuitry. The coupling mechanism is a heterogeneous transformer with primary and secondary windings implemented in antenna circuitry substrate (hybrid or monolithic), respectively. proposed topology avoids galvanic contacts between circuitry, allowing interconnecting by mere placing gluing process. Bonding soldering processes, often critical...
This work presents an RFID-based autonomous leaf-compatible temperature sensing system for precision agriculture. The wireless transponders are based on the EM4325 chip by EM Microelectronic, which features integrated sensor. is made to operate in semi-active mode and required energy supplied a flexible commercial solar cell. antenna manufactured PLA substrate adopting adhesive copper tape technology layout optimized obtain compact transponder, suitable being applied leaves. A field test...
River discharge is an important variable to measure in order predict droughts and flood occurrences. Once the cross-sectional geometry of river known, can be inferred from water level surface flow velocity measurements. Since discharges are particular interest during extreme weather events, when sites cannot safely accessed, noncontact sensing technologies particularly appealing. To this purpose, work proposes a prototype low-cost continuous wave (CW) Doppler radar sensor, which able monitor...
This study illustrates the sensing and wound healing properties of silk fibroin in combination with peptide patterns, an emphasis on printability multilayered grids, envisions possible applications these next-generation silk-based materials. Functionalized fibers covalently linked to arginine-glycine-aspartic acid (RGD) create a platform for preparing biomaterial ink 3D printing grid-like piezoresistors wound-healing properties. The culture medium obtained from 3D-printed enriched RGD...
This paper deals with a low-cost method for the assembly of flexible substrate antennas and UHF RF identification silicon (Si) chips. Such exploits magnetic coupling mechanism, thus not requiring galvanic contacts between Si chip antenna itself. The is established by planar transformer, primary secondary windings which are implemented on chip, respectively. As result, can be assembled mere placing gluing process. First, idea has been validated theory. Electromagnetic simulations square...
A novel zero-power wireless crack sensor based on the harmonic radar principle is presented. The tag, fabricated a paper substrate by means of copper adhesive tape technology, targeted for fundamental frequency f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> =2.45 GHz (ISM band) and consists system two nested annular slots, doubler stub behaving as band-stop filter. In presence crack, stub, placed at input doubler, torn off an alarm...
In this effort, the authors present first demonstration of a flexible, inkjet-printed mm-wave rectenna. The design considerations and processes individual antenna array rectifier are described, demonstrating realized gain 5 dBi, single-lumped-component via-less with up to 2.5V dc voltage for an input power 18 dBm, at operation frequency 24 GHz. printed system is finally demonstrated in wireless test, bent condition, thereby setting foundation emergence mm-wave-powered smart skins wearables...
The use of low-cost embedded devices with ubiquitous connectivity systems is a possible strategy to monitor the consumption water used in agriculture even countries that do not have good economic resources. In this paper, we propose system based on measuring approach capacitive soil content sensors never explored previously. This solution takes advantage sensor properties respond need measure at same time salinity and volumetric content. For purpose, bi-functional modified commercial an...
The inclusion of lumped elements, both linear and nonlinear, into the finite-difference time-domain (FDTD) algorithm has been recently made possible by introduction element FDTD method. Such a method, however, cannot efficiently accurately account for two-terminal networks several arbitrarily connected together. This limitation can be removed as proposed in this paper describing network terms its impedance Laplace domain using appropriate digital signal-processing methodologies to fit...
This letter presents the design of a Schottky diode frequency doubler suitable for harmonic RFID tags. A microwave is implemented in cellulose-based (paper) substrate, i.e., an ultra-low cost, recyclable and biodegradable material. The circuit exploits distributed microstrip structure that fabricated using copper adhesive laminate to have low conductor losses. measurements show conversion loss 13.4 dB at output 2.08 GHz. achieved with available input power -10 dBm only. Finally experiment...
In this letter, the design and performance analysis of a harmonic planar transponder on paper, which conjugates compactness scalability, are presented. The tag, targeted for fundamental frequency 1.2 GHz, is based doubler with single lumped component (a low-barrier Schottky diode) system nested tapered annular slot antennas. Both antennas, orthogonally placed, feature maximum gain around 3 dBi. optimized power levels in order -13 dBm, where it achieves conversion loss 15.7 dB. A complete...
This paper presents a novel passive Schottky-diode frequency doubler equipped with an on-off keying (OOK) modulation port to be used in harmonic transponders for both identification and sensing applications. The amplitude of the second-harmonic output signal is achieved by driving low-frequency MOSFET, which modifies dc impedance termination doubler. Since applied gate transistor, no static current drained. A proof-of-concept prototype was manufactured tested, operating at 1.04 GHz. An...
A 24‐GHz patch array antenna with integrated feeding network has been fabricated exploiting a multi‐layer cellulose‐based (i.e. paper) substrate. The adopted microstrip circuitry exploits copper adhesive laminate that is shaped by photo‐lithographic process and transferred to the hosting substrate using sacrificial layer. structure obtained stacking gluing two layers of photo‐paper an interposed ground plane. measurements show input reflection coefficient about −29 dB at centre frequency,...