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This article presents the design of a miniaturized wearable patch antenna to be utilized for the body area network (BAN) applications. To reduce the size of the antenna a crown fractal geometry antenna design technique has been adopted, and which resulted in a size reduction of 26.85%. Further, the polyester cloth has been used as the substrate of the antenna to make the proposed antenna a flexible...
The experimental study of electromagnetic interference of mobile phone radiations on brain waves is a contemporary research area and the ever-increasing use of mobile phones make it more imperative to explore the problem area in detail. Electromagnetic signal from mobile phones operating in Global System for Mobile (GSM) and wide band code division multiple access (WCDMA), has been considered in this...
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...
The traditional methods of designing antennas are not suitable in case of fractal antennas due to non availability of accurate mathematical design expressions. Recently, ANN model relating the physical and electromagnetic parameters of the fractal antenna to be designed is used as objective function of the optimization algorithm and it has been shown as an effective approach. In presented paper, ANN...
The design of miniaturized antennas using the fractal geometry concept is a latest trend. A new compact size circular based fractal antenna is presented in this paper. As the mathematical formulas are not available for the analysis of fractal antennas, so the development of a genetic algorithm based ANN ensemble for proposed antenna is also described. The comparison of the results of the proposed...
In last decade, a number of microstrip patch antennas based on fractal geometry have been proposed. Recently, some applications employing the fractal geometry as boundary of microstrip antennas are also proposed. In this paper, Minkowski curve has been used as boundary of a square split ring antenna. The simulated and experimental results of the proposed antenna have shown dual band behavior. Also...
Harmony in variety i.e. unity without similarity is a concept inspired from ancient times. Thinkers propose a team approach based on the same concept for problem solving i.e. using a combined group of solvers to resolve a difficult problem. Neural network ensemble (NNE) is a concept based on the same approach. Multiple artificial neural networks (ANNs) are trained for the same dataset to give the...
This paper presents implementation of modified variable step size least mean square adaptive algorithm using adaptive filter toolkit of LabVIEW software. User interface is designed using LabVIEW to obtain learning curve for adaptive algorithm. Simulation results are presented to compare the performance of the modified algorithm with the standard least mean square algorithms, Kwong's variable step...
Artificial Neural Networks have been recently used for the design and analysis of fractal antennas. The performance of various types of networks has not been yet explored for these antennas. This paper evaluates the performance of three types of neural networks: Back Propagation Neural Network (BPNN), Radial Basis Function Neural Network (RBFNN), and Generalized Regression Neural Networks (GRNN) for...
In this paper, Genetic Algorithms (GA) has been applied to calculate the optimized parameters of Elliptical Microstrip antenna. The inputs to the problem are thickness of the substrate, eccentricity, dielectric constant and even mode frequency. The output obtained is the optimized semi- major axis length ‘a’ from which the other parameters i.e. semi-minor axis length and odd mode frequency are calculated...
Reversible logic gates are in demand for the upcoming future computing technologies. Reversible logic is emerging as an important research area having its application in diverse fields such as low power CMOS design. The paper proposes the design of full Adder/Subtractor circuit using fault tolerant reversible logic gates. The design can work singly as a reversible Full Adder/Subtractor unit. It is...
The prime objective behind optimized sensor deployment is to reduce sensing range of a sensor node. Proper positioning of sensor nodes leads to increased lifetime, better coverage and more connectivity among nodes. In this paper, the sensor deployment problem has been considered as a clustered approach and the solution to the optimal co-ordinates of the sensor deployment has been obtained using Bacterial...
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