Results 1 to 10 of about 506,346 (193)
mmW Rotman Lens-Based Sensing: An Investigation Study [PDF]
Sensors, 2021 A Rotman lens is a wideband true-time delay device. Due to its simplistic structure with wave/signal routing capabilities, it has been widely utilized as a beamforming device in numerous communication systems.
Khaled Issa +2 more
exaly +8 more sources
A Volumetric Waveguide-Type Rotman Lens Antenna for Three-Dimensional Millimeter-Wave Beamforming [PDF]
SensorsIn this paper, a volumetric Rotman lens antenna operating at 28 GHz is proposed. The design formula and procedure were derived for the 3-D Rotman lens antenna. The number of tilted beams is 3 × 3. The six rectangular blocks are assembled using a metallic
Dong-Woo Kim, Soon-Soo Oh
exaly +5 more sources
Cascaded Rotman lens fed circular array [PDF]
Electronics Letters, 2019 A single Rotman lens fed circular array requires phase shifters to beam steer, whereas a two‐cascaded Rotman lens fed circular array can beam form and beam steer by simply exciting a single Rotman lens beam port. In this Letter, the authors show how cascaded Rotman lenses feeding a circular array can use this property in order to beam steer/shape and ...
Chepala, Anil, Fusco, Vincent
exaly +4 more sources
Fully-Metallic Additively Manufactured Monolithic Double-Ridged Waveguide Rotman Lens in the K/Ka-Band [PDF]
Sensors, 2023 This paper reports on the design and experimental validation of a fully-metallic double-ridged waveguide 10 × 10 Rotman lens additively manufactured as a single part. The wide band operation of this quasi-optical beamformer enables us to cover the uplink
Nelson J. G. Fonseca +8 more
doaj +2 more sources
Design of a novel wide-angle Rotman lens beamformer for 5G mmWave applications [PDF]
Scientific ReportsThe attachment of 5G with millimeter wave (mmWave) frequencies offers massive capacity and low latency to reveal the full 5G experiences. High directive gain and beamforming are considered essential for mmWave 5G systems.
Abolfazl Azari +2 more
doaj +2 more sources
5G as a wireless power grid [PDF]
Scientific Reports, 2021 5G has been designed for blazing fast and low-latency communications. To do so, mm-wave frequencies were adopted and allowed unprecedently high radiated power densities by the FCC. Unknowingly, the architects of 5G have, thereby, created a wireless power
Aline Eid +2 more
doaj +2 more sources
Ka-Band Rotman Lens-Based Retrodirective Beamforming System for Wireless Power Transfer [PDF]
Journal of Electromagnetic Engineering and Science, 2021 A retrodirective beamforming system (BFS) based on a Rotman lens is proposed for far-field wireless power transfer at Ka-band. The true-time-delay property of the Rotman lens allows for a wideband operation covering 28–38 GHz.
Hayoung Hong +8 more
doaj +1 more source
IEEE Access, 2020 A compact multi-layer Rotman lens-fed array antenna which can generate nine orbital angular momentum (OAM) modes is presented in this paper. The proposed antenna consists of a microstrip Rotman lens and a nine-element circular array antenna which ...
Dan Wu +5 more
doaj +1 more source
IEEE Access, 2021 In this paper, we present a general closed-form solution of trifocal Rotman lens beamforming network (TFRL-BFN) design to excite a conformal phased array of antennas for multibeam radiations.
Hsi-Tseng Chou, Danai Torrungrueng
doaj +1 more source
Design of Compact Rotman Lens Using Truncated Ports With Energy Distribution Slots
IEEE Access, 2019 A compact Rotman lens is presented in this paper. The compact Rotman lens consists of a lens body and truncated ports with the energy distribution slots.
Qiuyan Liang +4 more
doaj +1 more source