- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
Modeling of circular fractal antenna using BFO-PSO-based selective ANN ensemble
摘要： Accurate design of miniaturized antenna is constrained by the limited well‐formulated exact mathematical expressions. Demands for smart devices with features like portability, implantability, and configurability have further placed bigger challenges in front of the antenna design engineers or scientists. As a part of the search for various solutions, many innovative approaches have been proposed by various authors in different literatures. Application of soft computing is also another design approach to accurate design of fractal antenna. Here, the authors have attempted to propose a better solution to miniaturized antenna and its design. A fractal antenna based on circular outer geometry has been proposed as a solution to the search of miniaturized antennas, and a particle swarm optimization–based selective artificial neural networks ensemble is developed, which is employed as the objective function of a bacterial foraging optimization algorithm leading to a hybridized algorithm. The developed hybrid algorithm is utilized to develop the proposed antenna at 2.45 GHz. A good agreement of the simulated, desired, and experimental results validates the proposed design approach.
关键词： BFO,ANN ensemble,ISM band,fractal antenna,PSO
更新于2025-09-23 15:22:29
-
[Lecture Notes in Electrical Engineering] Microelectronics, Electromagnetics and Telecommunications Volume 521 (Proceedings of the Fourth ICMEET 2018) || Wide Band Sierpinski Carpet Rectangular Microstrip Fractal Antenna Using Inset-Fed for 5G Applications
摘要： The objective of this paper is to propose a wide band Sierpinski carpet rectangular microstrip fractal antenna fed with inset-fed for 5G applications. This proposed antenna design consists of the third iteration of Sierpinski carpet fractal on the rectangular patch and partial ground structure print on both sides of FR4 epoxy material with a dielectric constant of 4.4 and 0.4 mm thickness at 28 GHz. The simulated result shows a wide impedance bandwidth of 9.16 GHz and 8.43 dB gain. It can further be con?gured to an array of fractals for high gain and bandwidth, frequency selective surface (FSS), and radar applications.
关键词： Inset-fed and partial ground,Fractal antenna,Wide band,Sierpinski carpet
更新于2025-09-23 15:21:01
-
Fractal Analysis - Applications in Physics, Engineering and Technology || Fractals in Antennas and Metamaterials Applications
摘要： Recently, telecommunications systems have been requiring more advanced features in the design and operation. Among others a smaller size of devices, which can be integrated for multiple mobile communications systems, applied in one user's device board, such as PDA or smartphone. Moreover, the cost of mass production should be minimized as much as possible. To meet part of that request, the antennas of these devices should have small size, lower weight, operating in multiple frequency bands and/or be broadband. There are many research methods to achieve this goal, one of which is using the fractal geometries for the shape of antenna elements. In recent years, there are many fractal shapes that have been proposed for such applications, and the designed antennas have significantly improved antenna features such as smaller size, operating in multi-frequency bands, with improved power gain and efficiency. In recent years, the new approach for modern antenna the metamaterials, MTM, is adopted, and sometimes that based on the fractal geometry is adopted.
关键词： fractal geometries,fractal antenna,antenna array,efficiency,fractal dimension,IFS,metamaterials,power gain,MTM,multiband,antenna elements,compact size
更新于2025-09-19 17:15:36
-
A quad‐band Sierpenski based fractal antenna fed by co‐planar waveguide
摘要： In this article, A Sierpenski based octagonal carpet fractal antenna is introduced for quad-band applications. The proposed antenna developed with FR-4 substrate material with relative permittivity of 4.4, thickness chosen is 1.6 mm and co-planar waveguide feed is used in this design. The antenna is designed, simulated with computer simulation technology studio suite, printed and tested. The measurement results of proposed antenna resonates at 2.4, 4.45, 9.1, 10.24, 12.46 GHz and are well suited for C-band(2.4 GHz), L-band (4.45 GHz), X-band (9.1 GHz, 10.24 GHz), Ku-band (12.46 GHz) applications. Good agreement between the results of simulation and measurement is observed with applications.
关键词： Sierpenski fractal antenna,multiband applications,quad-band,co-planar waveguide
更新于2025-09-11 14:15:04
-
[Institution of Engineering and Technology 12th European Conference on Antennas and Propagation (EuCAP 2018) - London, UK (9-13 April 2018)] 12th European Conference on Antennas and Propagation (EuCAP 2018) - Fractal Antenna of MIMO System WLAN
摘要： The design of fractal antenna covering two-bands of WLAN-MIMO system is presented. To achieve compact size and dual frequency operation the Minkowski fractal island were used. The design and numerical simulations were done by means of HFSS software. The antenna operates at 2.443 and 5.261 GHz WLAN-bands. The overall dimension of the antenna is 23×23 mm2. Antenna was fabricated on microwave laminate FR4-epoxy. The numerical and experimental results agree favorable.
关键词： frequency tuning,design,Minkowski fractal island,MIMO system,fractal antenna,WLAN
更新于2025-09-04 15:30:14
-
[IEEE 2018 3rd International Conference for Convergence in Technology (I2CT) - Pune (2018.4.6-2018.4.8)] 2018 3rd International Conference for Convergence in Technology (I2CT) - A Star Shaped Superwide Band Fractal Antenna for 5G Applications
摘要： A superwide band (SWB) microstrip fractal antenna for 5G communication is proposed in this paper and a snow?ake like structure is achieved using star shaped fractal geometry. The con?guration of the proposed design has a substrate of Rogers RT5880 having thickness of 0.787mm, dielectric constant of 2.2 and loss tangent of 0.0009. The presented antenna is simulated using CST Microwave studio and parameters of the proposed structure are optimized so that it is suitable to be operated in the frequency range from 17.22GHz to 180GHz with the fractional bandwidth of 165%. The overall dimension of the antenna is just 20mm×20mm which is very compact. The peak gain of 10dBi and average gain of 6.4dBi is acquired and over all appreciated gain is maintained throughout the entire range. Result curves such as S-parameter, VSWR, radiation pattern, gain and Input impedance have been depicted and discussed in the paper.
关键词： 5G Technology,Snow?ake structure,Fractal antenna,Star shaped,Superwideband (SWB),Microstrip patch antenna
更新于2025-09-04 15:30:14