Results 31 to 40 of about 1,095,168 (305)

Microstrip Patch Antenna for GNSS Applications

Applied Sciences
This research paper presents the results of an analysis conducted on a microstrip patch antenna designed to operate within the 1.559–1.591 GHz frequency band, which encompasses three major satellite constellations: GPS, Galileo and BeiDou.
Hatice-Andreea Topal, Teodor Lucian Grigorie   +1 more
doaj   +1 more source

An aperture’s amplitude-phase distribution for forming frequency-independent direction-finding characteristics of a linear antenna arrays

Физика волновых процессов и радиотехнические системы, 2019
The apertures amplitude-phase distribution of a linear antenna array, ensuring the formation of frequency-independent direction-finding characteristics in a wide frequency band, is considered.
N.I. Bobkov, D.D. Gabriel’an, Yu.V. Ivanov   +2 more
doaj   +1 more source

Optical Scattering of Liquid Gallium Nanoparticles Coupled to Thin Metal Films

Nanomaterials, 2020
We investigate experimentally and numerically the scattering properties of liquid gallium nanoparticles coupled to a thin gold or silver film. The gallium nanoparticles are excited either directly by using inclined white light or indirectly by surface ...
Fu Deng, Hongfeng Liu, Yuanyuan Peng, Mingcheng Panmai, Sheng Lan   +4 more
doaj   +1 more source

Radiation pattern of a classical dipole in a photonic crystal: photon focusing

, 2003
The asymptotic analysis of the radiation pattern of a classical dipole in a photonic crystal possessing an incomplete photonic bandgap is presented. The far-field radiation pattern demonstrates a strong modification with respect to the dipole radiation ...
A. A. Maradudin, A. Taflove, B. Temelkuran, D. M. Sullivan, D. N. Chigrin, Dmitry N. Chigrin, E. M. Purcell, J. D. Jackson, J. D. Joannopoulos, J. P. Wolfe, K. Sakoda, K. Sakoda, P. Yeh, S. G. Johnson, V. P. Bykov   +14 more
core   +1 more source

Carcinomas and Carcinoid Tumors of the Lungs and Bronchi in Children and Adolescents: The EXPeRT Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Primary lung carcinomas and bronchial carcinoid tumors (BC) are very rare malignancies in childhood. While typical BC and mucoepidermoid carcinomas are mostly low‐grade, localized tumors with a more favorable prognosis than in adults, necessitating avoidance of overtreatment, adenocarcinomas of the lung are often diagnosed at advanced disease ...
Michael Abele, Calogero Virgone, Michaela Kuhlen, Sabine Irtan, Yves Reguerre, Malgorzata Krawczyk, Ewa Bien, Tal Ben‐Ami, Maja Cesen, Ricardo Lopez‐Almaraz, Andrea Ferrari, Gianni Bisogno, Dominik T. Schneider, Abbas Agaimy, Constantin Lapa, Hubert Ducou le Pointe, Rainer Claus, Catherine Daniel, Ines B. Brecht, Daniel Orbach   +19 more
wiley   +1 more source

MODIFIED TRANSMISSION LINE MODEL EQUATIONS FOR MICROSTRIP ANTENNA DESIGN

Academy Journal of Science and Engineering, 2022
Microstrip antennas are becoming more and more popular as the drive towards miniaturization continues. Therefore, the need for accurate models is growing.
Nyitamen, Dominic S, Agbendeh, Simon T
doaj  

X-band coaxial monopole antenna with an additional metal screen

Journal of Telecommunications and Information Technology, 2023
The novel coaxial monopole antenna design with an additional metal screen is presented. The radiation char- acteristics of this antenna are investigated depending on a dis- tance between the ground plane and additional metal screens, as well as on a ...
Maksym Khruslov , Vadym Pazynin
doaj   +1 more source

Optical Nanoantennas with Tunable Radiation Patterns [PDF]

Nano Letters, 2013
We address new optical nanoantenna systems with tunable highly directional radiation patterns. The antenna comprises a regular linear array of metal nanoparticles in the proximity of an interface with high dielectric contrast. We show that the radiation pattern of the system can be controlled by changing parameters of the excitation, such as the ...
Munarriz, J., Malyshev, A. V., Malyshev, V. A., Knoester, J.   +3 more
openaire   +3 more sources

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

Pediatric 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, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source

Radiation Pattern Synthesis Using Partially Reactively Loaded Antenna Array

IEEE Open Journal of Antennas and Propagation
This work proposes a method for the synthesis of the shape of the whole radiation pattern at a single frequency using a partially reactively loaded antenna array.
Samuel Travnicek, Jan Kracek, Pavel Hazdra   +2 more
doaj   +1 more source