Results 61 to 70 of about 28,555 (206)

Performance analysis of a novel metamaterial-inspired substrate-integrated cavity for 5G applications

open access: yesEPJ Applied Metamaterials
The functionality of a fully planar metamaterial-inspired substrate-integrated cavity is thoroughly investigated in the present work. The electromagnetic field confinement of the proposed device is realized with the utilization of broadside-coupled ...
Amanatiadis Stamatis   +3 more
doaj   +1 more source

A Microstrip Monopole Antenna Design for 5G Sub‐6 GHz Applications Using Deep Learning

open access: yesIET Communications, Volume 20, Issue 1, January/December 2026.
This study presents the design and optimization of a SIW antenna for 5G sub‐6 GHz applications, employing a deep learning‐based surrogate model combined with Honeybee Mating Optimization (HBMO). To generate training and test datasets efficiently, LHS was used.
Berker Çolak   +5 more
wiley   +1 more source

Cluster Algebras of Grassmannians are Locally Acyclic [PDF]

open access: yes, 2015
Considered as commutative algebras, cluster algebras can be very unpleasant objects. However, the first author introduced a condition known as "local acyclicity" which implies that cluster algebras behave reasonably.
Muller, Greg, Speyer, David E.
core  

Miniaturised QMSIW Filter Loading Sinusoidal Curved Slot

open access: yesElectronics Letters, Volume 62, Issue 1, January/December 2026.
In this Letter, a miniaturised filter is designed, analysed and measured. Utilising a sinusoidal curved slot as a strengthened distributed capacitance enables a further 22% size reduction in the quarter‐mode substrate‐integrated waveguide (QMSIW) filter compared to one with a conventional slot.
Hai Zhang   +6 more
wiley   +1 more source

W-Band Hybrid Unequal Feeding Network of Waveguide and Substrate Integrated Waveguide for High Efficiency and Low Sidelobe Level Slot Array Antenna Application

open access: yesInternational Journal of Antennas and Propagation, 2017
A W-band hybrid unequal feeding network of waveguide and substrate integrated waveguide (SIW) is presented in this paper. It comprises a two-way hybrid waveguide-SIW E-plane divider and an unequal SIW dividing network. Firstly, the two-way hybrid divider
Jun Wang, Yu Jian Cheng
doaj   +1 more source

Quantum random walk : effect of quenching

open access: yes, 2012
We study the effect of quenching on a discrete quantum random walk by removing a detector placed at a position $x_D$ abruptly at time $t_R$ from its path.
A. Ambainis   +6 more
core   +1 more source

A Miniaturised Circularly Polarised Planar Antenna Utilising a Novel Square Ring Patch Feeding Structure

open access: yesIET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
In this article, a novel set of orthogonal capacitive stubs, designed to simultaneously control circular polarisation and miniaturisation characteristics, is embedded into a 3 × 3 circular patch array. A metallic square‐ring patch loaded with L‐shaped stubs is proposed to excite CM modes and introducing a new circularly polarised mode, thereby ...
Minyu Jiang, Lei Zhu, Yuanjian Liu
wiley   +1 more source

Design of a Dual‐Polarised Wide‐Band Stacked‐Patch Array for Ku Band Satcom On‐the‐Move

open access: yesIET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
This paper presents a dual‐linearly polarised stacked 2 × 2 patch antenna array designed for SATCOM on‐the‐move in the Ku band, operating over the receive (10.7–12.75 GHz) and transmit (13.75–14.5 GHz) sub‐bands. The array is fed by two perpendicular corporate networks enabling reconfiguration of orthogonal linear polarisations, which can be combined ...
Davide Guarnera   +7 more
wiley   +1 more source

Electronically tunable graphene-based half-mode SIW phase shifter [PDF]

open access: yesAIP Advances
This paper presents a proof of concept for the first graphene-based half-mode substrate integrated waveguide (GHMSIW) phase shifter. The GHMSIW phase shifter comprises a half-mode substrate integrated waveguide (SIW) transmission line and a single stub ...
Shakir Ullah, Muhammad Yasir
doaj   +1 more source

Cost-effectiveness of brief structured interventions to discontinue long-term benzodiazepine use: an economic analysis alongside a randomised controlled trial [version 1; peer review: 2 approved]

open access: yesHRB Open Research, 2020
Background: In Spain, long-term use of benzodiazepine is prevalent in 7% of the population; however, this longer-term use lacks clinical benefits, costs €90million per year and side-effects further add extra cost through adverse health outcomes.
Dominic Trépel   +7 more
doaj   +1 more source

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