A Self-Similar Fractal Cantor Antenna for MICS Band Wireless Applications

Abstract

Low profile antenna in communication is a new methodology. Fractal geometry is a methodology through which size reduction is achieved. A Self-similar fractal antenna using multicantor technique is proposed and experimentally studied. Space-filling cantors and self-similarity properties of fractal geometry have been adopted in the proposed antenna to miniaturize the size of antenna. The antenna is designed in such a way to operate at MICS band (Medical Implant communication Service) for wireless telemedicine application. The prototype antenna exhibits wideband characteristics and provides a good agreement of return loss (S11). Experimental return loss has been compared with that which is obtained using method of moments. The objective of using self-similar concept in antenna makes it flexible in terms of controlling the resonance and bandwidth. In this paper, the Self-similar property of fractal geometry is examined by maintaining return loss (S11) more than –30 dB approximately in all the iterations (n) and the prototype antenna has return loss greater than –10 dB and exhibits wideband characteristics

Sobolev Spaces on Non-Lipschitz Subsets of $${\mathbb {R}}^n$$ R n with Application to Boundary Integral Equations on Fractal Screens

“…The idea of this form of antenna design, realised in many applications, is that the self-similar, multi-scale fractal structure leads naturally to good and uniform performance over a wide range of wavelengths, so that the antenna has effective wide band performance [20, §18.4]. Many of the designs proposed take the form of thin planar devices that are approximations to bounded fractal subsets of the plane, for example the Sierpinski triangle [42] and sets built using Cantor-set-type constructions [50]. These and many other fractals sets F are constructed by an iterative procedure: a sequence of "regular" closed sets F 1 ⊃ F 2 ⊃ .…”

Antena UHF multifuncional del tipo fractal microstrip basada en la alfombra de Sierpinski

“…En [5] se presentan las diferentes formas fractales clásicas que se han utilizado en la construcción de antenas, como son: el conjunto de Cantor [8], el triángulo de Sierpinski [6], la alfombra de Sierpinski [9], el triángulo de Pascal [10], la curva de Koch [11], entre otras. Todos estos tipos de antenas poseen un comportamiento multibanda, sin embargo, por sus geometrías particulares tienen sus métodos específicos de diseño, como también presentan sus propias características eléctricas y de radiación.…”

Self-similar resistive circuits as fractal-like structures

“…The electric response of inhomogeneous materials can be investigated with fractal-like models [25]. Alternative antenna designs modeled by self-similar structures were considered [26].…”