Results 21 to 30 of about 506,346 (193)
IEEE Access, 2019 This paper presents a design methodology of three-dimensional (3-D) passive metallic waveguide-array lens antenna (MWALA) by implementing the Rotman lens concept (RLC) for collinear multi-beam radiations on the same angular plane.
Hsi-Tseng Chou +2 more
doaj +1 more source
Automatic design and implementation of Rotman Lens
, 2022 For rapid Rotman lens design, a series of Matlab code was developed to complete the whole design process of Rotman lens, this code allows users to input some required parameters, then it can automatically get all the coordinate of the Rotman lens ...
Zhang, Heqi
core
A Review on the Development of Rotman Lens Antenna [PDF]
Chinese Journal of Engineering, 2014 Rotman lenses are the beguiling devices used by the beamforming networks (BFNs). These lenses are generally used in the radar surveillance systems to see targets in multiple directions due to its multibeam capability without physically moving the antenna system.
Shruti Vashist +2 more
openaire +1 more source
Millimeter-Wave 2D Retrodirective Beamformer Based on Waveguide Rotman Lens
IEEE AccessMillimeter-wave (mmWave) technologies offer high directivity and narrow beamwidth with compact size, making them suitable for wireless power transfer (WPT). To support efficient beam steering, retrodirective operation is advantageous.
Sooyoung Oh +5 more
doaj +1 more source
Fabrication of a 77 GHz Rotman Lens on a High Resistivity Silicon Wafer Using Lift-Off Process
International Journal of Antennas and Propagation, 2014 Fabrication of a high resistivity silicon based microstrip Rotman lens using a lift-off process has been presented. The lens features 3 beam ports, 5 array ports, 16 dummy ports, and beam steering angles of ±10 degrees.
Ali Attaran, Sazzadur Chowdhury
doaj +1 more source
One-Dimensional Beam Scanning Transmitarray Lens Antenna Fed by Microstrip Linear Array
IEEE Access, 2019 This paper proposed a one-dimensional beam scanning transmitarray lens antenna fed by a microstrip linear array antenna which owns a wide pattern in the plane orthogonal to the array axis and a narrow pattern in the plane that includes the array axis ...
Na Kou +3 more
doaj +1 more source
Information Design for Early‐Stage Dose‐Finding Trials
Naval Research Logistics (NRL), EarlyView.ABSTRACT To enhance enrollment rates in early‐stage dose‐finding clinical trials, we propose an information design approach, where the clinical investigator (CI) commits to an information releasing mechanism (IRM) based on the treatment's uncertain efficacy and toxicity to encourage patients to participate in the trial.
Amin Khademi, Ningyuan Chen
wiley +1 more source
Millimeter-Wave Retrodirective Wireless Power Transfer Applicable to Small Electronic Devices
IEEE Journal of MicrowavesWith the recent surge in popularity of the Internet of Things (IoT), there also has been a notable increase in research on wirelessly charging IoT enabled electronic devices. Millimeter-wave retrodirective power beaming has recently emerged as a suitable
Sooyoung Oh +6 more
doaj +1 more source
Frequency Invariant Beam Steering for Short-Pulse Systems with a Rotman Lens
International Journal of Antennas and Propagation, 2010 A promising approach for beam steering of high-voltage transient signals for HPEM-systems (High Power Electro Magnetic) is presented. The inherent capability of the Rotman lens to provide true time delays is used to develop a prototype beam steering ...
Andreas Lambrecht +3 more
doaj +1 more source
Business Ethics, the Environment &Responsibility, EarlyView.ABSTRACT While organizational justice perceptions are often thought to be stable, empirical evidence highlights substantial within‐person fluctuations over time. The development of these justice fluctuations may have important implications for newcomers' enactment of organizational citizenship behaviors (OCB).
Constanze Eib +4 more
wiley +1 more source