A multiband double square loop antenna with fractal concept is proposed. The design is based on an initial model of fractal geometry and a double square slot antenna structure. The initial model of fractal geometry influences to the second frequency band and it will be carefully investigated. The radiation patterns of the proposed antenna are still similarly to bidirectional radiation pattern. ...

Antenna Miniaturization Using Fractals Richa Garg, AP ECE Deptt., [email protected], J.C.D.C.O.E., Sirsa ABSTRACTThe use of fractal geometry in designing antenna has been a resent topic of interest. Fractal shape has their own unique characteristics that the improved antenna performance can be achieved without degrading the antenna properties. Modern telecommunication system requires antenn...

We use the fractional integrals to describe fractal media. We consider the fractal media as special (”fractional”) continuous media. We discuss the possible experimental testing of the continuous medium model for fractal media that is suggested in Phys. Lett. A. 336 (2005) 167-174. This test is connected with measure of period of the Maxwell pendulum with fractal medium cylinder. PACS: 03.40.-t...

The aim of this paper is to provide a survey on results and future perspectives of the project “Development an validation of a sea surface fractal model” approved by ESA in the framework of the “Opportunity of exploiting ENVISAT data”. The goal is to validate a sea surface fractal model, developed by the University of Pisa, trough the use of sea SAR images. New image fractal analysis techniques...

We construct a linear extension operator, Π, which extends a function u in the energy domain of the fractal Koch curve S to a larger domain Ω ⊆ R. The operator Π is the limit of a sequence of operators Πn and satisfies the estimate ∥Πu∥H1(Ω) ≤ C √ E[u] + ∥u∥2L2(S,μ) where C is a numerical constant independent of u. Our approach is different and more constructive than the standard approach and e...

Fractal compression is a technique for encoding images compactly. It is built on local self similarities within the images. Image blocks are seen as rescaled and intensity transformed approximate the copies of blocks found elsewhere in the image. In this paper the Fractal image compression technique using fixed level of scaling is proposed in which the time of encoding process is considerably r...

While finite non-commutative operator systems lie at the foundation of quantum measurement, they are also tools for understanding geometric iterations as used in the theory of iterated function systems (IFSs) and in wavelet analysis. Key is a certain splitting of the total Hilbert space and its recursive iterations to further iterated subdivisions. This paper explores some implications for asso...

On the basis of similar structure of solution for a second-order linear differential equation’s boundary value problem, and our analysis of the relationship between this similar structure and its kernel function, the differential equation, and the boundary conditions, we propose a new simple solution—similar constructive method of solution (SCMS)—and sum up its detailed steps. We set up a porou...

It is pointed out that the entropies of structure, information and the effectiveness entropy between knowledge and organization structure are main entropy sources of supply chain network in this paper. Firstly, establish entropy model of fractal supply chain network organization structure. Secondly, fractal knowledge management network outside independently organization structure is set up. Mor...

Most natural surfaces and surfaces of engineering interest, e.g., polished or sandblasted surfaces, are self-affine fractal over a wide range of length scales, with the fractal dimension Df 1⁄4 2:15 0:15. We give several examples illustrating this and a simple argument, based on surface fragility, for why the fractal dimension usually is \2.3. A kinetic model of sandblasting is presented, which...