Design and analysis of a multiband koch fractal monopole antenna

Abstract

Abstract-This work presents the design and investigation of the monopole and Koch fractal antenna. The fractal concept and geometry has been used in antenna design to obtain multi-band behavior and miniaturized size, as both of these characteristics are important requirements in current antenna design trends. The aim of this paper is to evaluate the antenna performance between monopole antenna and third iteration Koch fractal antenna. Antenna properties such as reflection coefficient (S 11 ), bandwidth, gain and radiation pattern are analyzed and discussed in this paper. The result shows that both antennas can operate well at respective designed resonances. However, the third iteration Koch fractal antenna is also proven to be advantageous over the planar monopole -more number of resonant frequencies, larger bandwidth and smaller size.

Reduced size of slotted‐fractal Koch log‐periodic antenna for 802.11af TVWS application

“…Thus, one of the important parameters in designing log‐periodic antenna is scaling factor, τ ranging between 0.8 and 1.0 . The dimension of length, L , width, W , and distance, D , of log‐periodic antenna determined its scaling factor as stated in Eq.…”

Design and Analysis of Minkowskized Hybrid Fractal Like Antenna for Multiband Operation

“…Paper [17] presented a CPW-fed slot antenna with a dielectric resonator for Heptaband operation. The study revealed that Koch curve dipole reduced the size of an antenna in comparison with the regular dipole antenna and affect resonant frequency in a positive way [9]. Also, Sierpinski triangle which is popularly known as Sierpinski gasket shows multiband behavior with growing number of iterations.…”

“…He explained the concept of a fractal and fractals abilities to reduce the size of an antenna without compromising its performance. Since then, various research concepts [6][7][8][9][10][11][12][13][14][15] related to fractal antenna have been revealed, and a new era of fractal antenna theory has begun. Various fractal antennas such as Sierpinski triangle [19], Koch dipole, meander and Minkowski fractal [16,17] show the advantages of fractal geometry over the popular fractal Sierpinski and Koch curve and become references.…”

Video Monitoring Application using Wireless Sensor Node with Various External Antenna

“…The antennas used as shown in Figure 1 are the Raspberry Pi 3 onboard antenna, monopole antenna, Fractal Koch antenna, and the Yagi Uda antenna. Yagi Uda was develop according to [5][6][7] and Fractal Koch designed according to [8], [9] by the Adavance RF and Microwave Research Group in Universiti Teknologi Malaysia (UTM). The antenna specifications are given im …”