Results 81 to 90 of about 506,346 (193)
Microstrip Rotman Lens Fed Array Using Multisection Transition
, 2015 23nd Signal Processing and Communications Applications Conference (SIU) -- MAY 16-19, 2015 -- Inonu Univ, Malatya, TURKEYThe Rotman lens is a multi-input device which controls the beam scan angle, depending on the phase shift corresponding to the path ...
Al-Obaidi, Mohammed K. +1 more
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Stacked Rotman Lenses for Dual Band Beamforming
IEEE Open Journal of Antennas and PropagationThis article presents a thin planar stacked antenna array for simultaneous dual-band beamforming. The uniqueness of the design is the use of passive beamformers in a compact module with sharp filters to enable beamforming when transmitting at closely ...
Muhammad Mubasshir Hossain +3 more
doaj +1 more source
IEEE Journal of MicrowavesA low-cost electrically-switched focused beam charging system based on a reconfigurable phase-change cascaded feed network is introduced for wireless power transfer application.
Wenyi Shao +4 more
doaj +1 more source
IEEE Open Journal of Antennas and PropagationMillimeter (mmWave) 5G phased arrays require multiple simultaneous features for reliable high data-rate communication. However, it is challenging to simultaneously achieve a true wideband operation for all parameters due to mutual coupling and grating ...
Haoran Zhang, Atif Shamim
doaj +1 more source
, 2018 Retro-directive backscattering is useful for improving link-budget in communication systems, localization and radar cross-section enhancement. Many existing technologies have limitations in terms of overall gain and scalability to higher frequencies ...
Keshavarzian, Pouyan
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Millimetre-Wave Beam-Switching Rotman Lens Antenna Designs on Multi-Layered LCP Substrates
, 2016 Compact and low-cost antenna arrays with beamsteering or beam-switching are needed for emerging millimeter-wave communication systems such as 5G and WLAN at the 60 GHz frequency band. The Rotman lens is a planar lens which can be used in conjunction with
Aurinsalo, Jouko +11 more
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Procesos de Patrimonialización. Institucionalidad y dinámicas de poder [PDF]
, 2016 El presente trabajo se propone analizar y comparar las características y el desarrollo de procesos patrimoniales en ámbitos de distinta índole, ubicados en la Ciudad de Buenos Aires, a los fines de examinar algunos aspectos de su conformación ...
Rotman, Monica Beatriz
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A microstrip-based Rotman lens for mm-wave sensing operations
, 2001 ©2003 COPYRIGHT SPIE--The International Society for Optical EngineeringRotman lenses offer a compact, rugged and reliable means of forming multi-beam staring array sensing arrangements.
Abbott, D. +5 more
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Beamforming Networks for antenna array, useful inWiFi applications
NOVASINERGIA, 2018 In this paper several types of beamforming networks have been presented, this proposalcan be used for an array antenna, which are used in several types of WiFi applications,IEEE 802.11b/g/draft-n. The first design corresponds to a 4x4 Butler Matrix for a
Carlos Ramiro Peñafiel Ojeda +4 more
doaj
Rotman Lens-Based Circular Array for Generating Five-mode OAM Radio Beams. [PDF]
Sci Rep, 2016 Bai XD +5 more
europepmc +1 more source