Results 1 to 10 of about 92,047 (225)
Wideband circularly polarized leaky wave rectenna
Scientific ReportsThis paper presents a circular polarized rectenna based on a leaky wave antenna (LWA). Integrating circular polarization with leaky wave radiation greatly improves energy harvesting by minimizing polarization losses and extending the spatial range of ...
Nesma Mohamed +4 more
doaj +1 more source
Bandpass filter design with spurious frequency reduction capability [PDF]
, 2014 Passband microstrip coupled line filter are widely used in daily microwave engineering practice. There are various topologies to implement microstrip bandpass filters such as end-coupled, parallel coupled, hairpin, interdigital and combine filters.
Muda @ Ali, Rosnani
core
, 1998 We have developed a scanning near-field microwave microscope that operates at cryogenic temperatures. Our system uses an open-ended coaxial probe with a 200 mm inner conductor diameter and operates from 77 to 300 K in the 0.01-20 GHz frequency range.
Anlage, Steven M. +7 more
core +1 more source
Microstrip to parallel strip balun as spiral antenna feed [PDF]
, 2012 This paper presents the design and implementation of a microstrip to parallel strip balun which are frequently used as balanced antennas feed. This wideband balun transition is composed of a parallel strip which is connected to the spiral antenna and a ...
Coetzee, Jacob +2 more
core +2 more sources
Electromagnetic radiation by antennas of arbitrary shape in a layered spherical media [PDF]
, 2009 A unified method of moments model is developed for the analysis of arbitrarily shaped antennas that are radiating next to a multilayered dielectric sphere.
Khamas, S.K.
core +1 more source
Tecnología y CienciaThe amount of data in today’s communication systems is increasing considerably, which in turn increases the bandwidth needed to deploy a given service. This requires antennas that are capable of operating simultaneously in more than one band.
Juan Eduardo Ise +5 more
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Genetic Algorithm Optimization of a High-Directivity Microstrip Patch Antenna Having a Rectangular Profile [PDF]
, 2013 A single high-directivity microstrip patch antenna (MPA) having a rectangular profile, which can substitute a linear array is proposed. It is designed by using genetic algorithms with the advantage of not requiring a feeding network.
Anguera, J. +2 more
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Microstrip filters for measurement and control of superconducting qubits
, 2013 Careful filtering is necessary for observations of quantum phenomena in superconducting circuits at low temperatures. Measurements of coherence between quantum states requires extensive filtering to protect against noise coupled from room temperature ...
Bennett, Douglas A. +4 more
core +1 more source
Quantifying numerical dispersion in non-orthogonal FDTD meshes [PDF]
, 2002 Numerical electromagnetic models such as FDTD are widely used for the design and analysis of structures, including antennas. Numerical dispersion is one of the main sources of error that degrade the accuracy of the results-for each structure of interest,
C.J. Railton +4 more
core +1 more source
IEEE AccessThis work presents a very compact microstrip lowpass-bandpass (LP-BP) triplexer, which is designed and analyzed based on a novel structure. Due to its complex design process, this type of triplexer is rarely designed.
Leila Nouri +8 more
doaj +1 more source