Results 31 to 40 of about 317,142 (308)

Design of a Novel Patch Antenna with Enhanced Gain and Side Lobe Reduction [PDF]

open access: yesEngineering and Technology Journal, 2012
The design of an efficient and directive small size antenna, for modern wireless applications, is a major challenge. This paper introduces the design and simulation of new method to enhance the gain and side lobe reduction that improve the performance of
Jabir S. AZIZ
doaj   +1 more source

Active coated nano rod antennas for enhanced and directive scattering phenomena

open access: yesEPJ Applied Metamaterials, 2019
The scattering properties of a range of symmetric and asymmetric active coated nano rod antennas are investigated numerically. The active nano rods are composed of a silica dioxide nano-core coated with a silver nano-shell, and with a canonical gain ...
Arslanagić Samel, Jacobsen Rasmus E.
doaj   +1 more source

Design of Crossed Dipole Yagi–Uda MIMO Antenna for Radar Applications

open access: yesInternational Journal of Antennas and Propagation, 2022
This work proposes, builds, and manufactures a small, high-gain MIMO antenna for radar applications. Using a Parasitic elements such as director & reflector show a simple method for increasing the gain and bandwidth of a Yagi-Uda Antenna.
K. Malaisamy   +3 more
doaj   +1 more source

Maximum Gain, Effective Area, and Directivity [PDF]

open access: yesIEEE Transactions on Antennas and Propagation, 2019
Fundamental bounds on antenna gain are found via convex optimization of the current density in a prescribed region. Various constraints are considered, including self-resonance and only partial control of the current distribution. Derived formulas are valid for arbitrarily shaped radiators of a given conductivity. All the optimization tasks are reduced
Mats Gustafsson, Miloslav Capek
openaire   +2 more sources

Directional GPS antenna for indoor positioning applications [PDF]

open access: yes, 2009
In this paper, a directional GPS antenna for L1 frequency - 1575 MHz - with RHCP and a high directive gain is proposed for indoor positioning applications.
Ozsoy, Kerem   +3 more
core  

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

A consideration of copyright for a national repository of humanities and social science data [PDF]

open access: yes, 2015
In 2011 the Digital Repository of Ireland (DRI) began work on the development of an interactive national Trusted Digital Repository for contemporary and historical social and cultural data.
Bustillo, Marta   +2 more
core   +2 more sources

Why and When Are Evidence‐Based Interventions Adopted in Paediatric Supportive Care? A Qualitative Exploration of the Determinants of Photobiomodulation Implementation

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Oral mucositis is a common and debilitating side effect of childhood cancer and stem cell transplant treatments. It affects the quality of life of children and young people (CYP) and places a strain on services. Photobiomodulation is recommended for oral mucositis prevention in international guidance but is poorly implemented in UK ...
Claudia Heggie   +4 more
wiley   +1 more source

Efficient MAC Protocols for Wireless Sensor Networks Endowed with Directive Antennas: A Cross-Layer Solution

open access: yesEURASIP Journal on Wireless Communications and Networking, 2007
This paper deals with a novel MAC layer protocol, namely, directive synchronous transmission asynchronous reception (D-STAR) able to space-time synchronize a wireless sensor network (WSN).
Gianfranco Manes   +7 more
doaj   +2 more sources

Measurement results of transmit delay diversity for DVB-T networks [PDF]

open access: yes, 2008
This paper describes work carried out by Brunel University and Broadreach systems (UK) to quantify the advantages that can be achieved if transmit diversity is applied to systems employing the DVB standard.
Di Bari, R
core   +1 more source

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