Results 11 to 20 of about 1,614 (200)

A High-Gain Omnidirectional Broadband Antenna

open access: yesInternational Journal of Antennas and Propagation
This study develops a two-element biconical deformed printed dipole omnidirectional antenna comprising a radiating arm, a feed line, and a magnetic ring.
Junjun Wu
doaj   +2 more sources

Novel Biconical Antenna Configuration with Directive Radiation [PDF]

open access: yesJournal of Electromagnetic Waves and Applications, 2009
In this paper a novel biconical antenna geometry has been proposed that has directive radiation pattern, higher gain and enhanced front to back ratio. Wide band performance is another characteristic of this new antenna. This record was migrated from the OpenDepot repository service in June, 2017 before shutting down.
Shahpari, M, Kashani, F Hojjat, Ameri, H
openaire   +3 more sources

Formulating layered adjustable autonomy for unmanned aerial vehicles [PDF]

open access: yes, 2017
Purpose - In this paper, we propose a Layered Adjustable Autonomy (LAA) as a dynamically adjustable autonomy model for a multi-agent system. It is mainly used to efficiently manage humans and agents share control of autonomous systems and maintain humans’
A Mostafa, Salama   +3 more
core   +1 more source

On Modeling Antennas Using MoM-Based Algorithms: Wire-Grid versus Surface Triangulation

open access: yesAlgorithms, 2023
This paper focuses on antenna modeling using wire-grid and surface triangulation as two of the most commonly used MoM-based approaches in this field.
Adnan Alhaj Hasan   +6 more
doaj   +1 more source

The effects of PO43- removal from aqueous solution with varied concentrations of metal oxides in steel slag filter system [PDF]

open access: yes, 2018
High amount of orthophosphate will accelerate the growth of autotrophs and eutrophication will occur. This phenomenon decreases the water quality and as a result may increase the cost of water treatment for drinking water.
Ahmad, Siti Zu Nurain   +2 more
core   +1 more source

Millimeter-Wave Propagation Measurement and Modeling in Indoor Corridor and Stairwell at 26 and 38 GHz

open access: yesIEEE Access, 2021
Accurate propagation characteristics are essential for future indoor millimeter-wave (mmWave) small cell network planning. This paper presents propagation measurements at 26 GHz and 38 GHz which are important candidate bands for fifth generation mmWave ...
Yuyan Shen   +4 more
doaj   +1 more source

Reduction of the model noise in non-linear reconstruction via an efficient calculation of the incident field: application to a 434 MHz Scanner [PDF]

open access: yes, 1999
Microwave tomography has been drastically boosted by the development of efficient reconstruction algorithms based on an iterative solution of the corresponding non-linear inverse problem.
Bolomey, Jean Charles   +7 more
core   +1 more source

On the Design of Conical Antennas for Broadband Impedance Matching Performance

open access: yesInternational Journal of Antennas and Propagation, 2017
In the scope of broadband radiators, the biconical antenna, or its monopole conical counterpart, is long known to be a proper choice. One common form of such radiator, the spherically capped conical antenna (SCCA), has closed-form solution to its input ...
Francisco Estêvão Simão Pereira   +1 more
doaj   +1 more source

Theoretical Investigations on CPW-Fed Single and Dual-Polarized Slot Radiators Using Schelkunoff’s Biconical Antenna Analysis [PDF]

open access: yesRadioengineering, 2020
This article presents a closed-form analysis of CPW-fed slot dipole structures with the help of Schelkunoff’s biconical antenna analysis technique and Babinet’s principle. Input characteristics of CPW-fed slot dipole antennas are investigated, and closed-
A. Banerjee   +4 more
doaj  

3D-Printed UHF-RFID Tag for Embedded Applications

open access: yesIEEE Access, 2020
This paper presents the design, manufacture and characterization of a novel 3D passive UHF-RFID tag for embedded applications. The prototype is fabricated using additive manufacturing techniques: 3D printing and copper electroplating.
Neus Vidal   +6 more
doaj   +1 more source

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