A5071771833- Antenna Design and Analysis
- Microwave Engineering and Waveguides
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Optimization
- Radio Astronomy Observations and Technology
- Gyrotron and Vacuum Electronics Research
- RFID technology advancements
- Energy Harvesting in Wireless Networks
- Microwave and Dielectric Measurement Techniques
- Bluetooth and Wireless Communication Technologies
- Modular Robots and Swarm Intelligence
- Microwave-Assisted Synthesis and Applications
- Astrophysics and Cosmic Phenomena
- Millimeter-Wave Propagation and Modeling
- Superconducting and THz Device Technology
- Restraint-Related Deaths
- Satellite Image Processing and Photogrammetry
- Advanced Chemical Sensor Technologies
- Renal function and acid-base balance
- Electromagnetic Simulation and Numerical Methods
- Advanced MIMO Systems Optimization
- Computational Physics and Python Applications
- Infrared Target Detection Methodologies
- Evolutionary Algorithms and Applications
- Thyroid Disorders and Treatments
Osservatorio Astronomico di Cagliari
2020-2025
National Institute for Astrophysics
2022-2025
University of Cagliari
1992-2018
A printed Log-periodic dipole array (LPDA) is presented, operating over the C, X and Ku bands. The antenna feeding structure consists of two coaxial cables, in order to realize an inflnite balun which provides required broadband input matching. second cable mirrors flrst one, connected input, capable both stabilizing phase center improving radiation pattern. has been designed using CST Microwave Studio, with useful frequency range 4{18GHz. Moreover, simulated measured results show that...
A printed log-periodic dipole array (LPDA), operating between 3 and 6 GHz fed with a coplanar waveguide, is presented. The antenna has been designed starting from Carrel's theory, optimized using CST Microwave Studio 2012, then realized. comparison simulated measured results shows that the proposed can be used for broadband applications in whole frequency band (3-6 GHz), very good input matching satisfactory endfire radiation pattern.
High-sensitivity and large-scale surveys are essential in advancing radio astronomy, enabling detailed exploration of the universe. A Phased Array Feed (PAF) installed focal plane a telescope significantly enhances mapping efficiency by increasing instantaneous Field View (FoV) improving sky sampling capabilities. This paper presents design optimization novel C-Band antenna for Sardinia Radio Telescope (SRT). The system features an 8 × array dual-polarized elements optimized to achieve...
The Sardinia Radio Telescope (SRT) is a 64-m, fully-steerable single-dish radio telescope that was recently commissioned both technically and scientifically with regard to the basic observing modes. In order improve scientific capability cover all requirements for an advanced telescope, we developed SArdinia Roach2-based Digital Architecture Astronomy (SARDARA), wide-band, multi-feed, general-purpose, reconfigurable digital platform, whose preliminary setup used in early science program of...
A multiband printed Log-periodic dipole array (LPDA) antenna for wireless communications is presented. The has been designed starting from Carrel’s theory, optimized using CST Microwave Studio 2012, and then realized. comparison between simulated measured results shows that the proposed can be used both in S (2.4–3 GHz) C (5.2–5.8 frequency bands, with very good input matching a satisfactory end-fire radiation pattern. Moreover, it compact size, easy to realize, presents an excellent...
In this work, a narrowband fully passive printable RFID chipless tag, working in the UHF band, is presented. The tag consists of two cross-polarized transmitting and receiving microstrip broadband circular monopole antennas, loaded with multiple cascaded resonators, each one unambiguously corresponding to data bit. proposed antenna has compact size, low cost fabrication, very frequency bandwidth. It uses spectral signatures encode data, hence provides unique ID for every tagged object. been...
A dual-band printed log-periodic dipole array (LPDA) antenna for wireless communications, designed on a low-cost PET substrate and implemented by inkjet-printing conductive ink, is presented. The proposed can be used communications both within the UHF (2.4–2.484 GHz) SHF (5.2-5.8 frequency bands, presents good out-of-band rejection, without need of stopband filters. has been using general-purpose 3-D computer-aided design software (CAD), CST Microwave Studio, then realized. Measured results...
AbstractWe present here the design and analysis of a microwave resonant cavity to evaluate effect RF electromagnetic field on enzyme reactions. The has been first designed using CST Microwave Studio. Then, its behaviour in actual use evaluated COMSOL multiphysics. presented results show that such can be quite effective.Keywords: cavitybiological effectsenzyme reactionmultiphysics AcknowledgementsMarco Simone gratefully acknowledges Sardinia Regional Government for financial support her PhD...
A multiband printed microstrip antenna for wireless communications is presented. The fed by a proximity-coupled line, and it on flexible substrate. has been designed using general-purpose 3D computer-aided design software (CAD), CST Microwave Studio, then realized. comparison between simulated measured results shows that the proposed can be used WLAN systems, covering both S-band (2.45 GHz) C-band (5.2 GHz), Wi-Max 3.5 GHz band, with satisfactory input matching broadside radiation pattern....
This work deals with the design of a wideband microstrip log periodic array operating between 4 and 18 GHz (thus working in C, X Ku bands). A few studies, since now, have been proposed but they are significantly less performing usually quite complicated. Our solution is remarkably simple shows both SWR gain better than likely structures literature. The same antenna can also be used as an UWB antenna. has developed using CST MICROWAVE STUDIO 2009, general purpose specialist tool for 3D...
In this work a low-cost uniplanar electromagnetic bandgap structure is presented, for antennas and microwave circuits working in the UHF frequency band. The proposed configuration fully planar, easy to fabricate, designed on PET substrate using conductive ink, based solely metallic surfaces layer interfaces, without use of vias or other kinds vertical connections.
This paper presents a wire antenna for multi-band WLAN application, designed using the Structure-Based Evolutionary Programming, and having very simple geometry. The has been analysed with NEC-2 during evolutionary process, outcome of procedure shows good performance, -10dB bandwidth that covers required frequencies applications (2.4/5.2/5.8 GHz) beyond, an end-fire gain greater than 11 dB.
Abstract A resonant cavity, used to evaluate the effects of exposition biological materials or aqueous‐organic mixtures low‐power electromagnetic fields at microwave frequencies, is presented.The cavity resonator has been designed using CST studio, and then manufactured. The simulations show a very good agreement with measured data. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2566–2569, 2012; View this article online wileyonlinelibrary.com. DOI 10.1002/mop.27135
We describe the architecture of a room-temperature C-band Phased Array Feed (PAF) demonstrator based on Radio Frequency System-on-Chip (RFSoC) for radio astronomy application. The instrument operates across 4.75-6.00 GHz RF band (C-band). section includes compact module an 8×8 array dual-polarization antennas integrated with MMIC (Monolithic Microwave Integrated Circuit) Low Noise Amplifiers (LNAs). A subset 32 elements one two polarization channels 128 are connected to LNAs, while rest...
A printed log-periodic dipole array (LPDA) for DVB-T2 Digital TV applications, covering the whole UHF band from Channel 21 to 69 (470 MHz–860 MHz), is presented. The presented antenna offers a compact size and lower cost compared both wire similar LPDAs, with normalized area of only 0.26 λ2 (where λ free-space wavelength at central frequency) (or higher) average gain. It composed meandered radiating dipoles, it implemented on FR4, cheapest dielectric substrate available market. Moreover, has...
A platform-tolerant RFID (Radio-Frequency Identification) tag is presented, designed to operate across the entire band. This utilizes a small Artificial Magnetic Conductor (AMC) structure as shielding element for an ungrounded antenna. It can be easily mounted on various surfaces, including low permittivity dielectric materials, metal objects, or even attached human body wearable applications. The key features of this include its ability tuned within worldwide band, achieving maximum...
In a cooling system for radio astronomy receivers, maintaining cold heads and compressors is essential consistent performance. This project focuses on monitoring the power currents of head’s motor to address potential mechanical deterioration, which could jeopardize overall functionality system. Using Hall effect sensors, microcontroller-based electronic board, artificial intelligence, detects predicts anomalies. The model operates using an unsupervised approach based incremental clustering....
High-sensitivity and large-scale surveys are essential in advancing radio astronomy, enabling detailed exploration of the universe. A Phased Array Feed (PAF) installed focal plane a telescope significantly enhances mapping efficiency by increasing instantaneous Field View (FoV) improving sky sampling capabilities. This paper presents design optimization novel C-Band PAF antenna for Sardinia Radio Telescope (SRT). The system features an 8×8 array dual-polarized elements optimized to achieve...
An improved analysis procedure for planar waveguide slot arrays has been devised and assessed. It takes into account the main interferences between radiating coupling slots, slots T-junctions, bends used in array feeding network. All these effects have modeled using in-house MoM codes, Elliott's model extended to include them. The results of this compared with experimental data showing a very good agreement.