Results 51 to 60 of about 31,808 (349)
IEEE Access, 2017 A printed omnidirectional dipole array antenna with a radiated load is proposed and analyzed, which is fed by a coplanar waveguide. Flying lines and via-holes are used to connect dipoles to achieve a balanced feed.
Hua Zong +6 more
doaj +1 more source
Antenna array with switching scanning in elevation plane
Физика волновых процессов и радиотехнические системы, 2021 It is known that the most reliable communication in hard-to-reach places such as the Arctic, Tundra, Taiga is satellite communication [1-5]. Therefore, for satellite communications, it is necessary to develop your own antenna arrays.
Yuri G. Pasternak +2 more
doaj +1 more source
Micromachined Millimetre-Wave Passive Components at 38 and 77 GHz [PDF]
, 2009 A precision micro-fabrication technique has been developed for millimetre-wave components of air-filled three-dimensional structures, such as rectangular coaxial lines or waveguides.
Huang, F. +4 more
core
Superconducting re-entrant cavity transducer for a resonant bar gravitational radiation antenna [PDF]
, 1992 Copyright @ American Institute of PhysicsA 10‐GHz superconducting niobium re‐entrant cavity parametric transducer was developed for use in a cryogenic 1.5‐tonne Nb resonant bar gravitational radiation antenna. The transducer has a very high electrical Q (
Braginsky V. B. +2 more
core +1 more source
Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection
Advanced Materials, EarlyView.Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel +7 more
wiley +1 more source
Coaxial Dipole Array With Switching Transmit Sensitivities for Ultrahigh Field MRI. [PDF]
Magn Reson MedABSTRACT Purpose To investigate dipole antennas with electronically switchable transmit field patterns to improve flip angle homogeneity in ultra‐high field MRI. Methods Reconfigurable dipole elements that could produce two distinct electronically switchable B1+ field profiles were conceptualized and constructed.
Bosch D +5 more
europepmc +2 more sources
Delay line and mutual coupling considerations for MST radar antenna arrays [PDF]
, 1983 Basic antenna theory which states that the field radiated from an antenna array is equal to the sum of the currents flowing in each element of the array is discussed.
Brosnahan, J. W.
core +1 more source
Advanced Materials, EarlyView.We report a multifunctional tapered optical fiber integrating a conformal micro‐resistance temperature detector (µRTD) for local, real‐time thermometry during optical stimulation. The platform combines light‐delivery and temperature sensing within a minimally invasive footprint, enabling detection of sub‐degree cortical heating under representative ...
Antonio Balena +6 more
wiley +1 more source
Dual Circularly Polarized Omnidirectional Antenna with Slot Array on Coaxial Cylinder
International Journal of Antennas and Propagation, 2015 A dual circularly polarized (CP) omnidirectional antenna based on slot array in coaxial cylinder structure is presented in this paper. It is constructed by perpendicular slot pairs around and along the axis of the coaxial cylinder to realize the ...
Bin Zhou +5 more
doaj +1 more source
A A Compact Bandwidth Enhanced Antenna Loaded with SRR For WLAN/WiMAX/Satellite Applications
Advanced Electromagnetics, 2018 A compact bandwidth enhanced antenna using metamaterial single Rectangular Split Ring Resonator (RSRR) for WLAN/WiMAX/Satellite applications is presented. As the wireless modules continue to shrink, there exists a drastic demand for a compact antenna. In
T. Ali, M. S. Aw, R. C. Biradar
doaj +1 more source