Results 121 to 130 of about 1,262,902 (327)

Considerations for GaN-powered base stations

open access: yesIII-Vs Review, 2006
Convergence of broadband with the wide variety of wireless channels, from Bluetooth through to WiMAX, makes the transmission towers and the base station key elements. The associated antenna and power amplifiers will play an important part in the continuing evolution of communication tools. This feature talks about some of the issues involved.
Keith Gurnett, Tom Adams
openaire   +2 more sources

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

open access: yesAdvanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner   +4 more
wiley   +1 more source

Atmospheric Doping of Stretchable Polymer Semiconductors for Skin Electronics

open access: yesAdvanced Functional Materials, EarlyView.
An atmospheric doping system using oxygen molecules in air as dopants is introduced for stretchable polymer semiconductors. The chemisorbed oxygen molecules act as acceptor, lead to increase not only the hole concentration of the semiconductor film over two orders of magnitude (3.37 × 1017 cm−3) but also electrical properties of the field‐effect ...
Min Woo Jeong   +7 more
wiley   +1 more source

The Displacement of Base Station in Mobile Communication with Genetic Approach

open access: yesEURASIP Journal on Wireless Communications and Networking, 2008
This paper addresses the displacement of a base station with optimization approach. A genetic algorithm is used as optimization approach. A new representation that describes base station placement, transmitted power with real numbers, and new genetic
Nam Kim, Kyung Soo Kim, Yong Seouk Choi
doaj   +1 more source

Suppression of Common-Mode Resonance in Multiband Base Station Antennas. [PDF]

open access: yesSensors (Basel), 2023
Farasat M   +4 more
europepmc   +1 more source

High‐Performance Field‐Effect Transistors and Phototransistors Array Based on Solution‐Processed Quasi‐1D Van der Waals Ta2Pd3S8 Crystals

open access: yesAdvanced Functional Materials, EarlyView.
Herein, the synthesis of Ta₂Pd₃S₈ nanowires is reported via scalable liquid cascade exfoliation and their integration into high‐mobility field‐effect transistors (FETs) and sensitive photodetectors, achieving carrier mobility of up to 27.3 cm2 V⁻¹ s⁻¹ and responsivities of 322.40 A W⁻¹ and 1.85 mA W⁻¹ for single nanowire and network devices ...
Kyung Hwan Choi   +13 more
wiley   +1 more source

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