Results 1 to 10 of about 9,417 (156)

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

2011 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.
Rosa De Paolis, Sébastien Pacchini, Fabio Coccetti, Giuseppina Monti, Luciano Tarricone, Manos M. Tentzeris, Robert Plana   +6 more
  +5 more sources

Automation of S-parameters measurements of high-power microwave transistors in a contact device with tunable strip matching circuits [PDF]

ITM Web of Conferences, 2019
In the practice by microwave power transistor amplifiers developing, the variable load method is usually used to determine the impedances of matching circuits in the complex conjugate matching mode. This solution involves the use of expensive equipment - coaxial impedance tuners and contact devices for mounting transistors in low impedance strip lines.
Vladimir Evseev, Mikhail Ivlev, Elena A. Lupanova, Sergey M. Nikulin, Vitaliy Petrov, A. A. Terentyev   +5 more
openalex   +3 more sources

Circuit-tunable subwavelength terahertz devices

, 2016
Dispositifs terahertz sub-longueur d'onde accordables par des composants discrets La demande croissante en composants optoélectroniques de taille réduite, rapides, de faible puissance et à faible coût oriente la recherche vers des sources et détecteurs de radiation ayant une dimension inférieure à la longueur d'onde émise/détectée ...
Bruno Paulillo
openalex   +3 more sources

Realisation of radio frequency microelectromechanical devices for multiband, tunable circuit applications

IET Microwaves, Antennas & Propagation, 2011
In this work a microelectromechanical-based parallel plate variable capacitor, a micromachined-inductor and an LC resonator that is formed by combining these two are presented. The parallel plate variable capacitor has curvature due to compressive stress and this allows the theoretical 50% tuning range to be exceeded.
Emre Heves, Yaşar Gürbüz
openalex   +3 more sources

Investigation of nonlinear processes and device designs applicable to the creation of a compact, broadly tunable laser based on a tantalum pentoxide planar lightwave circuit platform [PDF]

, 2010
Nonlinear photonic devices utilize phase-matched parametric wavelength conversion in a nonlinear medium to create a widely tunable pulsed laser source. Currently most of nonlinear lasers are based on bulk optics or photonic fibres. Lasers based on bulk optics utilizing nonlinear crystals in conjunction with high intensity pulsed laser pumps, which are ...
Ruiqi Chen
openalex   +3 more sources

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

Crystals, 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, Daniel Rozban, Efi Rahamim, Asaf Barom, Rotem Yosef, Liel Bhanam, Amir Abramovich   +6 more
doaj   +1 more source

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

Micromachines, 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, Lingyun Xie, Zeyong Wei, Zhanshan Wang, Xinbin Cheng   +4 more
doaj   +1 more source

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

IEEE 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, Fynn Kamrath, Stipo Matic, Henning Tesmer, Alejandro Jimenez-Saez, Dongwei Wang, Holger Maune, Michael Hoft, Rolf Jakoby   +8 more
doaj   +1 more source

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

IEEE 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, Ersin Polat, Stipo Matic, Christian Schuster, Daniel Miek, Henning Tesmer, Patrick Boe, Dongwei Wang, Rolf Jakoby, Holger Maune, Michael Hoft   +10 more
doaj   +1 more source

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

IEEE 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, S. Saeidallah Mortazavi, Alireza Namadmalan, Atif Iqbal, Mohammed Al-Hitmi   +4 more
doaj   +1 more source