Results 81 to 90 of about 5,806 (197)

Illuminating Advances in Materials: Optical Physical Unclonable Functions for Security Applications

open access: yesAdvanced Optical Materials, Volume 13, Issue 29, October 13, 2025.
This review highlights Optical Physical Unclonable Functions (OPUFs) as secure, light‐driven authentication tools. It surveys material platforms including optical fibers, low‐dimensional materials, luminophores, plasmonic nanoparticles and rare earth OPUFs systems.
Syeda Ramsha Ali   +4 more
wiley   +1 more source

Creation of backdoors in quantum communications via laser damage

open access: yes, 2016
Practical quantum communication (QC) protocols are assumed to be secure provided implemented devices are properly characterized and all known side channels are closed. We show that this is not always true.
Bourgoin, Jean-Philippe   +9 more
core   +1 more source

Design of Switchable and Reconfigurable Semi‐lumped Wideband Bandpass Filter

open access: yesETRI Journal, 2017
A switchable single‐wideband (SWB)‐to‐dual‐wideband (DWB) bandpass filter (BPF), which is realized by using lumped switches, is presented in this paper.
Yang Xiong   +5 more
doaj   +1 more source

A Compact Dual Bandpass Filter Using Dual Composite Right-/Left-Handed and Open-Loop Ring Resonators for 4G and 5G Applications [PDF]

open access: yesRadioengineering
In this paper a very compact design of a dual-band band pass filter (D-BPF) using dual composite right-/left-handed (D-CRLH) and open-loop ring (OLR) resonators is presented. To overcome the frequency ratio limitations of D-CLRH resonators technique, the
X. P. Dao   +7 more
doaj  

Monolithically-Integrated Bandpass Filters Using Capacitively-Loaded Intertwined Helical Resonators

open access: yesIEEE Journal of Microwaves
This paper presents a novel compact 3D bandpass filter (BPF) concept based on new classes of intertwined helical resonators. The concept is demonstrated by three unique RF filter architectures: a second-order single-band BPF, a second-order dual-band BPF,
Jose L. Medran del Rio   +4 more
doaj   +1 more source

Switchable Bandpass/Bandstop Filter Using Liquid Metal Alloy as Fluidic Switch

open access: yesSensors, 2019
In this paper, we propose a switchable band-pass/band-stop filter using liquid metal alloy as a fluidic switch. The filter is designed based on the Chebyshev response and implemented using a three-stage quarter-wavelength resonant structure.
Eiyong Park, Minjae Lee, Sungjoon Lim
doaj   +1 more source

Harmonic-Rejection Compact Bandpass Filter Using Defected Ground Structure for GPS Application

open access: yesActive and Passive Electronic Components, 2014
A miniaturized bandpass filter (BPF) using defected ground structure (DGS) resonator with the characteristic of harmonic rejection is developed in this paper.
Haiwen Liu   +5 more
doaj   +1 more source

Transversal wideband bandpass filter with a wide stopband and multiple transmission zeros

open access: yesETRI Journal, 2020
Herein, we present a compact transversal bandpass filter (BPF) with an extremely wide upper stopband and multiple transmission zeros (TZ). Three signal transmission paths with shorted stubs and open‐coupled lines allow signal transmission from input port
Li‐Tian Wang   +3 more
doaj   +1 more source

Compact tri‐wideband bandpass filter with multiple transmission zeros

open access: yesETRI Journal, 2018
This paper presents a tri‐wideband bandpass filter (TWB‐BPF) with compact size, high band‐to‐band isolation, and multiple transmission zeros (TZs). The proposed TWB‐BPF is based on a multiple‐mode resonator (MMR), which is interpreted by the method of ...
Yang Xiong   +6 more
doaj   +1 more source

Implementation of Single Cell Composite Right-Left Handed Transmission Line for Ultra Wideband Bandpass Filter

open access: yesInternational Journal of Technology, 2014
A design and fabrication of a compact ultra-wideband (UWB) bandpass filter (BPF) using single cell Composite Right-Left Handed Transmission Line (CRLH-TL) is reported in this paper.
Fitri Yuli Zulkifli   +2 more
doaj   +1 more source

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