Results 81 to 90 of about 51,071 (307)

Simple and accurate analytical model of planar grids and high-impedance surfaces comprising metal strips or patches

, 2008
This paper introduces simple analytical formulas for the grid impedance of electrically dense arrays of square patches and for the surface impedance of high-impedance surfaces based on the dense arrays of metal strips or square patches over ground planes.
Goussetis, George, Granet, Gérard, Lioubtchenko, Dmitri, Luukkonen, Olli, Räisänen, Antti V., Simovski, Constantin, Tretyakov, Sergei   +6 more
core   +1 more source

Organic Electrochemical Transistor Channel Materials: Copolymerization Versus Physical Mixing of Glycolated and Alkoxylated Polymers

Advanced Functional Materials, EarlyView.
This work discusses the use of blended channel materials in OECTs. It explores how mixing glycolated and alkoxylated polymers in various ratios offers a simpler and more efficient route to tuning OECT properties. The performance of the polymer blends is compared to the corresponding copolymers, demonstrating similar OECT characteristics, swelling ...
Lize Bynens, Kaishuai Zhang, Priscila Cavassin, Arwin Goossens, Jochen Vanderspikken, Tania C. H. Castillo, Demetra Tsokkou, Adam Marks, Arianna Magni, Karrie Weaver, Laurence Lutsen, Sahika Inal, Koen Vandewal, Natalie Banerji, Wouter Maes   +14 more
wiley   +1 more source

Experimental study of spiral antennas with various additional deceleration options

Физика волновых процессов и радиотехнические системы
Background. The work is aimed at the development and research of flat spiral antennas with additional slowdown. The use of slowdown structures allows to change the operating frequency range of antennas and the electrodynamic characteristics of antennas ...
Dmitrij P. Tabakov, Mikhail A. Malakhov
doaj   +1 more source

Design of a Planar Eleven Antenna for Optimal MIMO Performance as a Wideband Micro Base-station Antenna [PDF]

, 2018
A new low-profile planar Eleven antenna is designed for optimal MIMO performance as a wideband MIMO antenna for micro base-stations in future wireless communication systems. The design objective has been to optimize both the reflection coefficient at the
Glazunov, Andrés Alayón, Razavi, Aidin, Yang, Jian, Yu, Wenjie   +3 more
core   +1 more source

Comprehensive design and propagation study of a compact dual band antenna for healthcare applications [PDF]

, 2015
In this paper, a dual band planar inverted F antenna (PIFA) has been investigated for cooperative on- and off-body communications. Free space and on-body performance parameters like return loss, bandwidth, radiation pattern and efficiency of this antenna
Abbasi, Qammer H., Ashique, Ratil, Khan, Mohammad   +2 more
core   +2 more sources

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

The effect of the ground plane size and the height on small PIFA [PDF]

, 2003
This is the post-print version of the article - Copyright @ ISAP ...
AbuTarboush, HF, Cheung, SC, Nilavalan, R, Peter, T   +3 more
core   +1 more source

Advancing Electronic Application of Coordination Solids: Enhancing Electron Transport and Device Integration via Surface‐Mounted MOFs (SURMOFs)

Advanced Functional Materials, EarlyView.
The layer‐by‐layer (LbL) assembly of coordination solids, enabled by the surface‐mounted metal‐organic framework (SURMOF) platform, is on the cusp of generating the organic counterpart of the epitaxy of inorganics. The programmable and sequential SURMOF protocol, optimized by machine learning (ML), is suited for accessing high‐quality thin films of ...
Zhengtao Xu, Christof Wöll, Stefan Bräse   +2 more
wiley   +1 more source

Features and technologies of ERS-1 (ESA) and X-SAR antennas [PDF]

Features and technologies of planar waveguide array antennas developed for spaceborne microwave sensors are described. Such antennas are made from carbon fiber reinforced plastic (CFRP) employing special manufacturing and metallization techniques to ...
Schuessler, R., Wagner, R.
core   +1 more source