Results 11 to 20 of about 9,694 (264)

Method of phase compensation and pattern transformation for array antennas with arbitrarily oriented circularly polarised elements

open access: yesIET Microwaves, Antennas & Propagation, 2023
The inconsistent polarised directions and the radiation pattern transformation of the elements need to be considered in the analysis and simulation of large circularly polarised conformal arrays. Without relying on full‐wave simulations of the full array,
Zhongtian Jing, Yubing Han
doaj   +1 more source

Design of UAVs-Based 3D Antenna Arrays for a Maximum Performance in Terms of Directivity and SLL

open access: yesInternational Journal of Antennas and Propagation, 2016
This paper presents a design of UAVs-based 3D antenna arrays for a maximum performance in terms of directivity and side lobe level (SLL). This paper illustrates how to model the UAVs formation flight using 3D nonuniform antenna arrays.
Jesus Garza   +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

A Review of Synthesis Techniques for Phased Antenna Arrays in Wireless Communications and Remote Sensing

open access: yesInternational Journal of Antennas and Propagation, 2021
Electronically controlled antenna arrays, such as reconfigurable and phased antenna arrays, are essential elements of high-frequency 5G communication hardware.
Stanislav Ogurtsov   +2 more
doaj   +1 more source

PROSPECTS FOR THE DEVELOPMENT OF PHASED ANTENNA ARRAYS

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2016
This article describes the main achievements in the development of phased antenna arrays (par) in the past decade. Provides an overview of the most famous systems based on the PAR and PAR based on MMIC technology - PAR in radar stations, PAR to control ...
A. P. Dzuba
doaj   +1 more source

A New and Simple Design Method for End-Fire Dipole Antenna Array and Three Two-Element 24 GHz Planar End-Fire Dipole Antenna Arrays

open access: yesApplied Sciences, 2021
For an RF system, a high-gain antenna helps to improve the equivalent isotropic radiated power (EIRP) of the transmitter and an end-fire antenna array helps to improve the directivity (D) and half power beam width (HP) of the antenna.
Yanfei Mao, Shiju E, Chungeng Zhu
doaj   +1 more source

Sidelobe Reductions of Antenna Arrays via an Improved Chicken Swarm Optimization Approach

open access: yesIEEE Access, 2020
Antenna arrays are able to improve the directivity performance and reduce the cost of wireless communication systems. However, how to reduce the maximum sidelobe level (SLL) of the beam pattern is a key problem in antenna arrays.
Shuang Liang   +5 more
doaj   +1 more source

100 GHz Silicon-based micro-machined patch antenna and arrays

open access: yesThe Journal of Engineering, 2019
This study designs a micro-machined BCB-cavity patch antenna and two types of four-element micro-machined antenna arrays at 100 GHz. The patches are fabricated on Benzocyclobutene (BCB) polymer material.
Jingtian Liu   +3 more
doaj   +1 more source

Dual-Polarization and Dual-Band Conical-Beam Array Antenna Based on Dual-Mode Cross-Slotted Cylindrical Waveguide

open access: yesIEEE Access, 2021
Two designs of conical-beam array antennas are presented for different fifth-generation applications. They are based on slotted cylindrical waveguides and a travelling-wave topology, where the waveguide is used to progressively excite a cross-slot array.
Pablo Sanchez-Olivares   +2 more
doaj   +1 more source

Thinning of Sierpinski fractal array antennas using bounded binary fractal-tapering techniques for space and advanced wireless applications

open access: yesICT Express, 2019
Fractal arrays are repetitive-geometry-based smart arrays having impressive array factor properties. However, the performance of these arrays degrades owing to their large number of antenna elements at higher expansion levels. This research work presents
V.A. Sankar Ponnapalli, P.V.Y. Jayasree
doaj   +1 more source

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