Results 31 to 40 of about 3,242 (300)

DIRECTIVITY OF ANTENNA ARRAYS [PDF]

open access: yesRadio Physics and Radio Astronomy, 2016
Purpose: Theoretical investigation of directive gains of linear and planar antenna arrays depending on the distance between radiators and wavelength.
A. A. Bulgakovа   +3 more
doaj   +1 more source

Nonreciprocal Phased-Array Antennas [PDF]

open access: yesPhysical Review Applied, 2019
26 pages; 16 figures; 1 ...
Zang, J. W.   +2 more
openaire   +2 more sources

Wi-Fi Access Point Design Concept Targeting Indoor Positioning for Smartphones and IoT

open access: yesSensors, 2022
Indoor positioning systems (IPS) have been regarded as essential for many applications, particularly for smartphones, during the past decade. With the internet of things (IoT), and especially device-to-device (D2D) cases, the client is supposed to have a
Mohamed S. El-Gendy   +2 more
doaj   +1 more source

Study and Design of a Diferentially Fed Tapered Slot Antenna Array

open access: yes, 2010
The results of a parametric study and design of an ultrawideband dual-polarized array of differentially-fed tapered slot antenna elements are presented. We examine arrays of bunny-ear antennas and discuss the capabilities and limitations of differential ...
Lera Acedo, Eloy de   +5 more
core   +2 more sources

An Efficient Compact Blazed Grating Antenna for Optical Phased Arrays

open access: yes, 2023
Phased arrays are vital in communication systems and have received significant interest in the field of optoelectronics and photonics, enabling a wide range of applications such as LiDAR, holography, wireless communication, etc.
Henna Farheen (11674690)   +4 more
core   +1 more source

Microwave phased array for aerological radar [PDF]

open access: yesITM Web of Conferences, 2019
The use of radars with phased antenna arrays in aerological atmospheric sounding systems significantly increases the technical characteristics of the radio channel, ensures reliable auto-tracking in the near zone at high angular velocities of the ...
Shabunin Sergey   +3 more
doaj   +1 more source

Analytical beampattern synthesis for symmetric nonuniform linear array based on superposition principle

open access: yesElectronics Letters, 2023
In this letter, an analytical method for the beampattern synthesis of symmetric nonuniform array is proposed. This method consists of two steps. In the first step, it acquires a real symmetric excitation by the convex optimization method to attain a ...
Fei Shi, Mengkai Hu, Xiuquan Dou
doaj   +1 more source

Phased array antennas in MIMO receiver

open access: yesJournal of Telecommunications and Information Technology, 2006
In this paper, a computer simulation of a MIMO system comprising phased array antennas (PAA) in all receiving branches is presented. In order to examine the system performance under relatively realistic conditions, a ray-tracing simulator was applied to generate a baseband channel impulse response matrix H.
Sebastian Kozłowski   +2 more
openaire   +2 more sources

A Design Proposal Using Coherently Radiating Periodic Structures (CORPSs) for 2-D Phased Arrays of Limited Scanning

open access: yesApplied Sciences
New configurations of 2-D phased arrays are proposed in this paper for reducing the number of phase shifters. This design methodology is based on the use of a novel coherently radiating periodic structures (CORPSs) block for 2-D phased arrays.
Gilberto Calvillo   +4 more
doaj   +1 more source

60 GHz compact broadband antenna arrays with wide-angle beam steering

open access: yesThe Journal of Engineering, 2019
Highly integrated multilayered printed circuit board-based patch antenna arrays are proposed in this study for 60 GHz wireless communications. Electromagnetic coupling between two stacked patches is used to achieve
Imran Aziz   +6 more
doaj   +1 more source

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