Results 61 to 70 of about 22,257 (229)

A Wideband Circularly Polarized Microstrip Patch Antenna With Embedded Shielding Package Based on Quarter-Mode Substrate Integrated Waveguide Feed

open access: yesIEEE Access, 2020
In this paper, the feasibility of using the half-mode/quarter-mode of a substrate integrated waveguide (HMSIW/QMSIW) cavity to feed microstrip patch antennas (MPAs) is explored; based on this, a circularly polarized (CP) MPA fed by the sequential ...
Kai Sun   +4 more
doaj   +1 more source

Multiple Order Dual-Band Active Ring Filters with Composite Right/Left Handed Cells [PDF]

open access: yes, 2010
In this paper, a novel dual-band active filter topology is presented. The non-linear phase response of a composite right/left-handed cell is used to achieve the desired dual-band performance.
García Muñoz, Luis Enrique   +3 more
core   +2 more sources

Recent advances in multifunctional soft robots: A materials–structures–systems co‐design perspective for synergistic integration

open access: yesFlexMat, EarlyView.
Abstract Soft robots, engineered from highly compliant materials, offer superior adaptability and safety in unstructured environments compared to their rigid counterparts. Recent advancements, fueled by bio‐inspiration and material programmability, have led to the rapid co‐evolution of their core modules: actuation, sensing, protection, energy, and ...
Qiulei Liu   +3 more
wiley   +1 more source

Microwave microscopy applied to EMC problem: Visualisation of electromagnetic field in the vicinity of electronic circuit and effect of nanomaterial coating

open access: yesAdvanced Electromagnetics, 2017
This proposal is devoted to a collaborative approach dealing with microwave microscopy experiments. The application is dedicated to an electromagnetic field cartography above circuits and the influence of nanometric material layer deposition on the ...
J. Rossignol   +5 more
doaj   +1 more source

Spoof Surface Plasmon Polaritons in Terahertz Integrated Circuits

open access: yesAdvanced Photonics Research, Volume 7, Issue 5, May 2026.
Terahertz integrated circuits (THz ICs) face challenges from wavelength‐scale dimensions and parasitic effects. Spoof surface plasmon polaritons (SSPPs) provide strong confinement and enhanced near fields, enabling novel transmission and modulation mechanisms.
Xuanru Zhang, Ze Kai Wang, Tie Jun Cui
wiley   +1 more source

A compact and sensitive spurline-based microwave sensor for non-invasive glucose detection

open access: yesDiscover Applied Sciences
Non-invasive blood glucose monitoring remains a critical need in diabetes management, prompting the development of compact, sensitive, and user-friendly sensing technologies.
Ibrahim Zewail   +3 more
doaj   +1 more source

An UWB LNA Design with PSO Using Support Vector Microstrip Line Model

open access: yesJournal of Applied Mathematics, 2015
A rigorous and novel design procedure is constituted for an ultra-wideband (UWB) low noise amplifier (LNA) by exploiting the 3D electromagnetic simulator based support vector regression machine (SVRM) microstrip line model.
Salih Demirel   +2 more
doaj   +1 more source

Josephson parametric reflection amplifier with integrated directionality

open access: yes, 2018
A directional superconducting parametric amplifier in the GHz frequency range is designed and analyzed, suitable for low-power read-out of microwave kinetic inductance detectors employed in astrophysics and when combined with a nonreciprocal device at ...
Klapwijk, T. M., Westig, M. P.
core   +2 more sources

Hierarchical Reconfigurable Metasurface Based on Scenario‐Guided Functional Modules and Programmable Core

open access: yesAdvanced Science, Volume 13, Issue 28, 18 May 2026.
This paper proposes a hierarchical reconfigurable metasurface architecture (HRMA) to achieve comprehensive electromagnetic parameter modulation and on‐demand polymorphic function switching. The reconfigurable metasurface is divided into a programmable core (PC) and scenario‐guided functional modules (FMs), exhibiting significant flexibility and ...
Lihao Zhu   +11 more
wiley   +1 more source

The treatment of geometrically small structures in FDTD by the modification of assigned material parameters [PDF]

open access: yes, 2005
A number of different improvements to the analysis by finite-difference time-domain (FDTD) of small structures, such as wires, strips and slots have been proposed in the literature.
Craddock, IJ   +3 more
core   +2 more sources

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