Results 21 to 30 of about 1,829,864 (373)

Over-the-Air Array Calibration of mmWave Phased Array in Beam-Steering Mode Based on Measured Complex Signals

open access: greenIEEE Transactions on Antennas and Propagation, 2021
Accurate knowledge of initial complex excitation coefficients for phased-array elements is essential to ensure accurate array performance. In the literature, many array calibration algorithms have been proposed for this purpose, which generally requires ...
Zhengpeng Wang   +5 more
openalex   +3 more sources

Terahertz Beam Steering: from Fundamentals to Applications

open access: yesJournal of Infrared, Millimeter and Terahertz Waves, 2023
Free-space transmission of terahertz (THz) waves opens great opportunities for wireless applications including sensing and communication in the 6G era and beyond.
Y. Monnai, Xuyang Lu, K. Sengupta
semanticscholar   +1 more source

Reconfigurable SIW-Based Leaky-Wave Antenna Composed of Longitudinal Cells

open access: yesIEEE Access, 2021
A novel fixed frequency beam-steering leaky-wave antenna (LWA) is presented in this manuscript. Radiation occurs through thin offset longitudinal slots etched on a substrate integrated waveguide (SIW).
Nima Javanbakht   +3 more
doaj   +1 more source

3D Printed Directive Beam-Steering Antenna Based on Gradient Index Flat Lens With an Integrated Polarizer for Dual Circular Polarization at W-Band

open access: yesIEEE Transactions on Antennas and Propagation, 2023
In this communication, the design of a circularly polarized (CP) perforated gradient index (GRIN) flat lens antenna with directive beam-steering properties is presented for millimeter-wave applications at W-band (75–95 GHz).
J. Melendro-Jiménez   +4 more
semanticscholar   +1 more source

Programmable Beam-Steering Capabilities Based on Graphene Plasmonic THz MIMO Antenna Via Reconfigurable Intelligent Surfaces (RIS) for IoT Applications

open access: yesElectronics, 2022
The approaching sixth-generation (6G) communication network will modernize applications and satisfy user demands through implementing a smart and reconfigurable system with a higher data rate and wider bandwidth.
S. A. Khaleel   +3 more
semanticscholar   +1 more source

Microswitch beam-steering grid [PDF]

open access: yesInternational Conference on Millimeter and Submillimeter Waves and Applications 1994, 2017
We propose new microswitch beam-steering grids to operate at 90 GHz and 240 GHz. The microswitch beam-steering grid has potential advantages over mechanical-scanning devices or active beam-steering reflectors based on diode grids such as lower loss and simple control circuits.
Chiao, Jung-Chih, Rutledge, David B.
openaire   +2 more sources

Diffraction Efficiency of MEMS Phase Light Modulator, TI-PLM, for Quasi-Continuous and Multi-Point Beam Steering

open access: yesMicromachines, 2022
The recent development of the Micro Electromechanical System (MEMS) Phase Light Modulator (PLM) enables fast laser beam steering for lidar applications by displaying a Computer-Generated Hologram (CGH) without employing an iterative CGH calculation ...
Xianyue Deng   +3 more
doaj   +1 more source

High-performance optical beam steering with nanophotonics

open access: yesNanophotonics, 2022
The ability to control and steer optical beams is critical for emerging technologies. Among these are light detection and ranging (LiDAR), laser display, free space communication, and single pixel imaging.
Sam Lin, Yixin Chen, Zi Jing Wong
semanticscholar   +1 more source

High-Accuracy, High-Gain Phased Array Utilizing Matrix-Sum and Tunable Amplifier Techniques

open access: yesIEEE Access, 2023
This paper presents an 8-element phased array system and proposes a novel beam control method—namely, matrix-sum method—that can achieve beam steering and beam-width control.
Yi-Ting Lin, Zuo-Min Tsai, Jen-Ming Wu
doaj   +1 more source

Functional Metasurface Quarter-Wave Plates for Simultaneous Polarization Conversion and Beam Steering.

open access: yesACS Nano, 2021
The capability to manipulate the polarization state of light at the nanoscale is of paramount importance in many emerging research areas ranging from optical communication to quantum information processing.
Yadong Deng   +4 more
semanticscholar   +1 more source

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