Results 1 to 10 of about 12,181 (273)

Steer by Image Technology for Intelligent Reflecting Surface Based on Reconfigurable Metasurface with Photodiodes as Tunable Elements

open access: yesCrystals, 2022
Lately, metasurface has become an essential and promising component in implementing Intelligent Reflecting Surface (IRS) for 5G and 6G. A novel method that simplifies the ability to reconfigure the metasurface is presented in this paper.
David Rotshild   +6 more
doaj   +1 more source

On-Chip Optical Beam Manipulation with an Electrically Tunable Lithium-Niobate-on-Insulator Metasurface

open access: yesMicromachines, 2022
Photonic integrated circuits (PICs) have garnered increasing attention because of their high efficiency in information processing. Recently, lithium niobate on insulator (LNOI) has become a new platform for PICs with excellent properties. Several tunable
Linyuan Dou   +4 more
doaj   +1 more source

Novel Hybrid Electric/Magnetic Bias Concept for Tunable Liquid Crystal Based Filter

open access: yesIEEE Journal of Microwaves, 2022
This paper presents a novel hybrid bias concept for liquid crystal (LC) filter by using simultaneously electric and magnetic bias fields. It enables continuous tuning with a simplified electrode design, decreased number of electrodes and reduced bias ...
Ersin Polat   +8 more
doaj   +1 more source

Circuit model of carbon-nanotube inks for microelectronic and microwave tunable devices [PDF]

open access: yes2011 IEEE MTT-S International Microwave Symposium, 2011
This paper proposes an electrical model of carbon-nanotube (CNT) networks, that can be patterned using inkjet transfer printing. The Double-Walled carbon Nanotubes (DWNTs) “inkjet”-able suspension was deposited in gaps of variable lengths cut out of the central line of the coplanar waveguide test structure.
DE PAOLIS, ROSA   +6 more
openaire   +2 more sources

Bandwidth and Center Frequency Reconfigurable Waveguide Filter Based on Liquid Crystal Technology

open access: yesIEEE Journal of Microwaves, 2022
This paper presents for the first time a fully electronically reconfigurable waveguide filter tunable in bandwidth and center frequency based on liquid crystal (LC) technology.
Fynn Kamrath   +10 more
doaj   +1 more source

Inkjet‐Printed Indium Oxide/Carbon Nanotube Heterojunctions for Gate‐Tunable Diodes

open access: yesAdvanced Electronic Materials, 2020
van der Waals heterojunctions composed of dissimilar materials enable fabrication of gate‐tunable diodes showing negative transconductance characteristics. Such devices show great potential for implementation of multi‐valued logic circuits.
Bongjun Kim
doaj   +1 more source

Design and Sensitivity Analysis of Dynamic Wireless Chargers for Efficient Energy Transfer

open access: yesIEEE Access, 2021
Tunable Self-Oscillating Switching (TSOS) methods are a robust solution for tuning of Inductive Power Transfer (IPT) systems. However, they require deep analysis to be an appropriate choice for Dynamic Wireless Charging (DWC) systems.
S. Abbas Moosavi   +4 more
doaj   +1 more source

Concept for Continuously Tunable Output Filters for Digital Transmitter Architectures

open access: yesIEEE Access, 2019
This paper presents a novel output filter approach for continuously frequency-tunable digital power amplifiers, suitable for future seamless and band-less applications in 5G, e.g. for cognitive radios (CR). The presented tunable output filter is based on
Christian Schuster   +8 more
doaj   +1 more source

A Current Mode Design of Fractional Order Universal Filter

open access: yesAdvances in Electrical and Computer Engineering, 2019
In this paper, low-voltage active elements based a general filter topology, which provides fractional order low-pass, high-pass, band-pass and band-reject filter responses at the same circuit, is introduced.
SACU, I. E., ALCI, M.
doaj   +1 more source

Low-Voltage Permittivity Control of Coplanar Lines Based on Hafnium Oxide Ferroelectrics Grown on Silicon

open access: yesIEEE Access, 2019
This paper is dedicated to the study of the tunable electromagnetic properties of HfO2 doped with Zr (further referred to as HfZrO) grown on high-resistivity silicon using atomic layer deposition (ALD) techniques. Two metallic coplanar lines patterned on
M. Aldrigo   +6 more
doaj   +1 more source

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