10 papers
Superdirective Arrays with Finite-Length Dipoles: Modeling and New Perspectives
Konstantinos Dovelos, Stylianos D. Assimonis, Hien Quoc Ngo +1
Dense arrays can facilitate the integration of multiple antennas into finite volumes. In addition to the compact size, sub-wavelength spacing enables superdirectivity for endfire o…
Superdirective Antenna Pairs for Energy-Efficient Terahertz Massive MIMO
Konstantinos Dovelos, Stylianos D. Assimonis, Hien Quoc Ngo +1
Terahertz (THz) communication is widely deemed the next frontier of wireless networks owing to the abundant spectrum resources in the THz band. Whilst THz signals suffer from sever…
Efficient Circular Polarized Metamaterial RF Energy Harvester for Wi-Fi Applications
Stylianos D. Assimonis, Vincent Fusco, Manos M. Tentzeris
A new metamaterial based, circular polarized electromagnetic energy harvester is presented in this work. The structure, which is multilayer and utilises the well-known to the liter…
Intelligent Reflecting Surface-Aided Wideband THz Communications: Modeling and Analysis
Konstantinos Dovelos, Stylianos D. Assimonis, Hien Quoc Ngo +2
In this paper, we study the performance of wideband terahertz (THz) communications assisted by an intelligent reflecting surface (IRS). Specifically, we first introduce a generaliz…
Electromagnetic Modeling of Holographic Intelligent Reflecting Surfaces at Terahertz Bands
Konstantinos Dovelos, Stylianos D. Assimonis, Hien Quoc Ngo +2
Intelligent reflecting surface (IRS)-assisted wireless communication is widely deemed a key technology for 6G systems. The main challenge in deploying an IRS-aided terahertz (THz)…
Intelligent Reflecting Surfaces at Terahertz Bands: Channel Modeling and Analysis
Konstantinos Dovelos, Stylianos D. Assimonis, Hien Quoc Ngo +2
An intelligent reflecting surface (IRS) at terahertz (THz) bands is expected to have a massive number of reflecting elements to compensate for the severe propagation losses. Howeve…
Millimeter-wave Multimode Circular Array for Spatially Encoded Beamforming in a Wide Coverage Area
Stylianos D. Assimonis, M. Ali Babar Abbasi, Vincent F. Fusco
This paper summarizes an investigation around millimeter-wave (mmWave) multimode circular antenna array based beamformer capable of specially encoded data transmission in a wide co…
Millimeter-wave Multi-mode Circular Antenna Array for Uni-cast Multi-cast and OAM Communication
Stylianos D. Assimonis, M. Ali Babar Abbasi, Vincent Fusco
This paper investigates multi-mode and orbital angular momentum (OAM) mode data transmission techniques by a using a circular antenna array, operating at 28 GHz. The classical mode…
Two-Parametric Nyquist Pulses with Better Performance Based on Inverse Hyperbolic Functions
Songbing Liang, Stylianos D. Assimonis
In this article, three new inter-symbol interference (ISI)-free pulses with enhanced performance compared to the state-of-the-art are proposed and studied in terms of frequency and…
Intelligent Reflecting Surfaces with Spatial Modulation: An Electromagnetic Perspective
Okan Yurduseven, Stylianos D. Assimonis, Michail Matthaiou
Electromagnetic wave control using the concept of a reflecting surface is first studied as a near-field and a far-field problem. Using a secondary source present in a wireless comm…