Results 21 to 30 of about 99,963 (219)

Hexagonal open loop resonators employing frequency shift coding for Chipless RFID tag applications [PDF]

open access: yesInternational Journal of Electronics and Telecommunications
A novel, high surface encoding capacity compact planar multiresonator tailored for Chipless RFID tag applications is discussed in this article. The tag consists of three hexagonal open loop resonators that are etched on the ground plane of a 50Ω ...
Harikrishnan A I, Mary Neebha, Sumi M
doaj   +1 more source

Characteristics of polar coronal hole jets [PDF]

open access: yes, 2013
High spatial- and temporal-resolution images of coronal hole regions show a dynamical environment where mass flows and jets are frequently observed. These jets are believed to be important for the coronal heating and the acceleration of the fast solar ...
Banerjee, D.   +4 more
core   +1 more source

Subleading corrections to the Double Coset Ansatz preserve integrability [PDF]

open access: yes, 2014
In this article we compute the anomalous dimensions for a class of operators, belonging to the SU(3) sector of the theory, that have a bare dimension of order N. For these operators the large N limit and the planar limit are distinct and summing only the
Graham, Stuart   +2 more
core   +2 more sources

Simple Memristive SPICE Macro-Models and Reconfigurability in Filter and Antenna [PDF]

open access: yesRadioengineering, 2016
Simple current- and voltage-controlled memristive circuit macro-models using SPICE are proposed to capture the nonlinear hysteresis loop behaviors in this paper.
K.D. Xu, X.S. Li, Y.J. Guo, Q.H. Liu
doaj  

Configurable microwave structures for software defined (and cognitive) radio front ends [PDF]

open access: yes, 2010
Both Software Defined Radio and Cognitive Radio require a flexible transceiver front end. This paper introduces solutions to two important features of such a device; the antenna and the filter.
Hilton, GS, Warr, PA
core   +3 more sources

Compact Size UWB Monopole Antenna with Triple Band-Notches [PDF]

open access: yesRadioengineering, 2017
This paper presents triple band notched ultra wide band (UWB) monopole antenna with overall size of 36 × 32 mm2 fed by microstrip transmission line. In order to achieve a good impedance matching from 2.7 GHz to 13.4 GHz, a tapered transition between the ...
W. Ali, A. A. Ibrahim, J. Machac
doaj  

Wideband and UWB antennas for wireless applications. A comprehensive review [PDF]

open access: yes, 2017
A comprehensive review concerning the geometry, the manufacturing technologies, the materials, and the numerical techniques, adopted for the analysis and design of wideband and ultrawideband (UWB) antennas for wireless applications, is presented. Planar,
Cicchetti, Renato   +2 more
core   +3 more sources

Scalable grid resource allocation for scientific workflows using hybrid metaheuristics [PDF]

open access: yes, 2008
Grid infrastructure is a valuable tool for scientific users, but it is characterized by a high level of complexity which makes it difficult for them to quantify their requirements and allocate resources.
Buss, G, Lee, K, Veit, D
core   +1 more source

Cross-Layer Design of FDD-OFDM Systems based on ACK/NAK Feedbacks

open access: yes, 2009
It is well-known that cross-layer scheduling which adapts power, rate and user allocation can achieve significant gain on system capacity. However, conventional cross-layer designs all require channel state information at the base station (CSIT) which is
Cheng, Roger S. K.   +2 more
core   +1 more source

Laboratory studies of spacecraft response to transient discharge pulses [PDF]

open access: yes, 1985
The in-orbit measurement of spacecraft discharge properties was investigated. The experiments include design and fabrication of appropriate sensors and effects of spacecraft electromagnetic responses on the interpretation of the discharge data.
Adamo, R. C., Nanevicz, J. E.
core   +1 more source

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