Mickhayluck, Yury P., Savochkin, Alexander A., Schekaturin, Andrey A. et al. · The Scientific Issues of Ternopil Volodymyr Hnatiuk National Pedagogical University Series pedagogy · 2007
Wireless local networks of Wi-Fi standard, which are actively used presently, is supposed application nondirectional antennas. For the increase of efficiency of communication lines between user's terminals and access points it is better to use the directional antennas with the control radiation pattern. The results of theoretical and experimental research of 4 and 8 elements phased antenna array of ranges are in-process presented 2.4 and 5 GHz of radiation pattern maximum changeable direction. The overall sizes of antennas allow to build them in user's terminals.
Cited by 0Open access
Junyu Zhou, Yuhui Zhao, Yizhou Jin et al. · 2024
In this paper, a 2 × 2 directional dual-polarization antenna array operating at 2.4GHz for Wi-Fi applications is proposed. This antenna mainly consists of four crossed elements and a feeding network. For the sake of structural simplicity, low profile, and ease of mass production, printed dipoles are adopted as the dual-polarized antenna element. To feed the antenna element, a pair of L-shaped balun transmission lines are designed. The simulated S<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</inf>, radiation and antenna efficiency are discussed in this paper.
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ijeit · OSF Preprints (OSF Preprints) · 2020
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K. Malaisamy, M. Santhi, S. Robinson et al. · Research Square · 2021
Abstract This paper illustrates the design and development of the Series-fed Two Dipole Array antenna (STDA) for Wi-Fi applications. The proposed antenna consists of two dipole elements of different lengths, which are serially joined by the Coplanar Strip Line (CPS). The design incorporates an alternative feeding mechanism of coaxial/probe feeding technique with balun. The primary objective of this paper is to develop the high gain antenna with array configuration for Wi-Fi applications. The performance parameters of an antenna such as return loss, radiation pattern, gain and directivity are investigated for STDA array configurations. It operates at 2.4 GHz and produces a high gain of 21.6 dBi with reflector. The STDA antenna has been analyzed for different array configurations in the formation of 1×4, 1×8, 2×8 STDA array formation in order to improve the overall gain. The proposed antenna is fabricated an FR4 substrate with a dielectric constant of 4.4 and Loss tangent (tan δ) of 0.007 with the thickness of 1.6 mm. The size of an antenna is about 105 mm × 80 mm. The proposed antenna meets the requirements of an antenna which is operating at 2.4GHz with a bandwidth of 200 MHz; hence, it is found to be suitable for Wi-Fi applications.
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K. Malaisamy, M. Santhi, S. Robinson et al. · Wireless Personal Communications · 2021
Cited by 3
Dongming Wei, Junwei Dong, Ravi Kumar Arya et al. · 2024
The manuscript presents a Rotman lens as a beamforming network for feeding antenna arrays in applications such as satellite communication systems, collision avoidance radar, and ultra-wideband communication systems. The array port connects to the Vivaldi antenna via an SMA connector, forming an array antenna with beam-scanning capabilities. Experimental results show that the designed lens enables beam scanning with a width of ±30°, achieving a maximum antenna gain of 12 dBi. The design results correlate closely with the experimental data, validating the effectiveness of the proposed approach.
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И.С. Фаустов, V. B. Manelis, Vladimir Kozmin et al. · Proceedings of Telecommunication Universities · 2025
Relevance. The active use of wireless technologies requires the development of controls for wireless networks, in particular Wi-Fi networks. Radio monitoring services solve the tasks of detecting, identifying and localizing unauthorized access points and clients. An effective tool for bearing radio signals is correlation interferometric direction finders based on two-channel receiving equipment and a multi-element antenna system. The development of methods of joint identification and bearing makes it possible to separate the bearings of a large number of signal sources operating in the same frequency range with time division. In this work, the emphasis is placed on the detection of target signals and the identification of source features from them. The indicators of the quality of bearing will also significantly depend on the success of these operations. The aim of the work is to investigate the possibilities of increasing the interference resistance of detecting and identifying Wi-Fi signals through the combined use of two channels of a correlation interferometric detector. Methods. The paper uses statistical computer modeling methods that take into account the presence of fading due to multipath propagation channel and the correlation of radio signals caused by the proximity of receiving antennas. Decision. Algorithms of detection, time-frequency synchronization and demodulation of Wi-Fi signals are considered. Methods of combining receiving channels in signal processing are proposed. The noise immunity of the proposed two-channel signal processing algorithms in the presence of quasi-stationary Relay fades and correlation of receiving channels is investigated. Novelty. Algorithms for two-channel detection, time-frequency synchronization and demodulation of Wi-Fi signals have been developed. Practical significance. The combined use of two reception channels for the detection and identification of Wi-Fi signals allows you to increase the reliability of radio monitoring systems by 4‒7 dB, even if there is a correlation between the channels.
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J. G. Vera-Dimas, M. Tecpoyotl‐Torres, Pedro Vargas et al. · Programación matemática y software · 2019
La comunicación inalámbrica, mejor conocida como Wi-Fi (Wireless Fidelity), adquiere interés ya que no requiere del uso de cables, los cuales son engorrosos y limitan el espacio libre. Este tipo de comunicación es ampliamente utilizado en equipos electrónicos, principalmente en el hogar y la industria. Las antenas de parche, que usan algunos de estos equipos, son muy populares debido a sus características. El objetivo de este trabajo es obtener un prototipo de antena de parche eficiente y económico para su uso en interiores y exteriores. En principio, se presenta el prototipo de una antena de parche rectangular diseñada para Wi-Fi con polarización lineal. Después, se realizan sobre ella cortes y ranuras, para mejorar su ganancia. Las pruebas realizadas con la antena individual con cuatro cortes muestra la factibilidad de su uso para interiores. Posteriormente, se diseña un arreglo de antenas de parche en base a la antena individual de cuatro cortes, con la finalidad de obtener un prototipo mejorado. Las pruebas demuestran un buen desempeño del arreglo de antenas propuesto, para su uso en interiores y exteriores, como se esperaba.
Cited by 15Open access
Bernhard Schrenk · Zenodo (CERN European Organization for Nuclear Research) · 2024
An all-fiber focal plane beamformer with 32 fine-pitched antenna elements and 1×32 switch is employed for robust coupling of light between two optical single-mode waveguides over a free-space link. The penalty in bit error ratio due to an angular receiver misalignment can be fully mitigated.
Cited by 2Open access
Rovin Tiwari, Raghavendra Sharma, Rahul Dubey · International Journal of Emerging Technology and Advanced Engineering · 2023
An antenna that works at high frequencies, specifically in the microwave region, is called an MPA, which stands for "Microstrip Patch Antenna." MPA is appropriate for electronic and wireless communication devices operating on 4G and 5G. This research presents the design and fabrication of a 1X2 and 1X4 circular form MPA-Array for a 5G wireless communication system. It is possible to get three distinct resonant frequencies of 4.5GHz, 5.4GHz, and 6.4GHz, with a value of gain 7.22dBi and a bandwidth of 2012MHz. The concept uses a cutting-edge layout for a patch antenna with a circular form and a partial ground. The Printed Circuit Board (PCB) constructed of copper with two sides is used to create the hardware design. An FR-4 epoxy substrate is used to fabricate the MPA-A, which is then put through an experimental test where its findings are compared to those generated by a simulation
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Minh-Hoang Vu, Thang Viet Tran, Yudi April Nando et al. · Lecture notes in computer science · 2024
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Milind Fernandes, Aniket Bhandare, Chetan Dessai et al. · 2013
In this paper a Switched beam 4×1 linear antenna array is presented with a 4×4 Butler matrix feed. For wideband operation Aperture coupled antenna elements are used in the array whereas wideband Hybrid couplers and Cross Couplers are used in the Butler Matrix feed. Design and Simulations are carried out in IE3D software considering a low cost FR4 substrate. The array is designed to cover LTE bands at 2.3 & 2.6GHz as well as the 2.4GHz ISM band. The performance parameters from simulation and measurements are presented and analyzed. A total 1:1.3 VSWR bandwidth of 400MHz is obtained with gain between 6-7.5dB, directivity of ~12dBi and Efficiency greater than 30%. The radiation beam directions in azimuth are obtained at +15, -15, +45 and -45° for respective input port.
Cited by 15
Hajar Ja'afar, Mohd Tarmizi Ali, Ahmad Nazri Dagang et al. · Greater South Information System · 2016
This paper presents a new design of reconfigurable plasma antenna array using commercial fluorescent tube.A round shape reconfigurable plasma antenna array is proposed to collimate beam radiated by an omnidirectional antenna (monopole antenna) operating at 2.4 GHz in particular direction.The antenna design consists of a monopole antenna located at the center of a circular aluminum ground.The monopole antenna is surrounded by a cylindrical shell of conducting plasma.The plasma shield consists of 12 commercial fluorescent tubes aligned in series containing a mixture of argon gas and mercury vapor which upon electrification forms plasma columns.The plasma behaves as a conductor and acts as a reflector in radiation, in the condition where plasma frequency, ω p is higher than the operating frequency.From this concepts, when all plasma elements are activated or switched to ON, the radiation signal from the monopole antenna will trapped inside the plasma blanket and meanwhile when one or more plasma elements is deactivated (switched OFF), the radiation from the monopole antenna will escape.This antenna has the capability to change its patterns with beam direction at 0°, 30°, 60°, 90°, 120°, 150°, 180°, 210°, 240°, 270°, 300° and 330° at frequency 2.4 GHz.The proposed antenna has been successfully fabricated and measured with conclusive results.
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Y.H. Yu, Bin Li, Xin Jiang et al. · Lecture notes in electrical engineering · 2025
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M. Cicolani, A. De Luca, M. Teglia · Bulletin of Miscellaneous Information (Royal Gardens Kew)
Modern phased array antennas in radar systems are composed of several thousands of transmit/receive modules (TRM), whose correct functioning has remarkable impact on radar performance. It is therefore of fundamental importance to check and monitor main characteristics of active array components; such actions will permit to verify system performance in real time and, if necessary, suitable actions to guarantee them may be actuated. The application presented in the first part refers to a particular application of metamaterial structures inside an open waveguide, whose final purpose is to allow radiation in free space with high efficiency within a wideband well below its cut‐off frequency; in the latter an useful application of an embedded WiFi Controller of a phased array antenna.
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Florian Honz, Bernhard Schrenk · ArXiv.org · 2025
Terrestrial free-space optical (FSO) links are an ideal candidate to extend the bandwidth continuum offered by fiber networks, yet at the expense of unfavorable cost credentials due to highly complex opto-mechanical setups. As a response to this challenge, we present a simple fiber-based focal plane array (FPA) architecture which contributes beamforming functionality to an FSO link that bridges the gap between two single-mode fiber ports. Through use of space-switched and wavelength-routed beamforming networks, which together with a photonic lantern provide a compact arrangement of up to 61 fine-pitched optical antenna elements on a fiber tip, we experimentally demonstrate that our FPA can assist the channel optimization of an FSO link after rough initial beam pointing. We show that favorable coupling conditions can be accomplished between two standard single-mode fibers, which enables us to successfully retain the fiber continuum by achieving error-free 10 Gb/s/λ data transmission in a space-switched out-door fiber-wireless-fiber scenario.
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Florian Honz, Bernhard Schrenk · Journal of Lightwave Technology · 2025
Terrestrial free-space optical (FSO) links are an ideal candidate to extend the bandwidth continuum offered by fiber networks, yet at the expense of unfavorable cost credentials due to highly complex opto-mechanical setups. As a response to this challenge, we present a simple fiber-based focal plane array (FPA) architecture which contributes beamforming functionality to an FSO link that bridges the gap between two single-mode fiber ports. Through use of space-switched and wavelength-routed beamforming networks, which together with a photonic lantern provide a compact arrangement of up to 61 fine-pitched optical antenna elements on a fiber tip, we experimentally demonstrate that our FPA can assist the channel optimization of an FSO link after rough initial beam pointing. We show that favorable coupling conditions can be accomplished between two standard single-mode fibers, which enables us to successfully retain the fiber continuum by achieving error-free 10 Gb/s/λ data transmission in a space-switched out-door fiber-wireless-fiber scenario.
Cited by 5
Teddy Purnamirza, Imran Mohd Ibrahim, Puji Prowadi et al. · International Journal on Communications Antenna and Propagation (IRECAP) · 2017
This paper presents a brief review of the development of small radial line slot array (RLSA) antennas for Wi-Fi devices. Based on the review, we concluded that some of the RLSA antennas designed and implemented on Wi-Fi devices are not optimal. Hence, this study aimed to design a small RLSA antenna for point-to-point 5.8 GHz Wi-Fi devices with an optimum design using a previously developed technique known as the extreme beamsquint technique. We used this technique to design and simulate 50 small RLSA antenna models, and then we fabricated the best model. We measured the performance of the fabricated prototype to verify the simulation results. The following measurement results were obtained: a gain of 17.28 dBi, a bandwidth of 1 GHz, a beamwidth of 300, and a mainlobe-to-sidelobe ratio of 10 dB. These results meet the required antenna specifications for Wi-Fi devices. Moreover, the prototype was successfully tested as an antenna for a Wi-Fi device.
Cited by 4
Antara Ghosal, A. K. Majumdar, Avali Banerjee et al. · 2024
In this chapter a microstrip patch antenna with array of spiral slots is analyzed. The slotted patch antenna can be used for WLAN, WiMAX, Wi-Fi, S-band application. The antenna is fed by a coaxial probe. The work comprises of two structures. First two square spiral patch antenna is introduced with tuning arms. Secondly, these slotted spiral patches are used as an array element for the final structure. There are four array elements on the final structure. The antenna is modeled and simulated using Ansoft HFSS Simulator software. The parametric study like the reflection coefficient, radiation pattern, gain and current distribution of the proposed structure is obtained. The simulated and experimental results are in good agreement with each other. Experimental results are obtained using Network Analyzer.
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Irfan Maulana, Nurul Fahmi Arief Hakim, Agus Heri Setya Budi et al. · 2023
This paper examines the configuration of an array antenna featuring a rectangular patch and a power distribution technique known as Dolph Tschebyscheff. The application of Dolph Tschebyscheff distribution aims to suppress unwanted sidelobes that arise from modifying the antenna with multiple elements. The array antenna consists of three rectangular elements and operates at a frequency of 6.175 GHz. Each patch element is supplied using a proximity coupling technique to achieve a broad bandwidth. The stacked antenna is constructed using two layers of FR-4 dielectric substrate, each measuring 68.7 mm $\times 50.8$ mm with a thickness of 0.8 mm. The simulation results demonstrate a bandwidth of 295 MHz, a sidelobe level of -14.8 dB, and a gain exceeding 8 dBi at approximately 6.175 GHz. With its wide bandwidth, desirable gain, and low sidelobe characteristics, the designed stacked antenna is suitable for applications in Wi-Fi 6E.
Cited by 1