Analysis of microstrip rectangular carpet shaped fractal antenna

Abstract

The need for miniaturized antenna is ever growing in view of the advancements in wireless communication technology.The conventional microstrip antennas take any shape like square, rectangular, triangle and so on. They provide normally single resonance frequency with high quality factor because of narrow bandwidth. However, the fractal antennas are able to provide either multi-band resonances or broad bandwidth because of the self-similar and space-filling properties.In present paper, a study is made on Sierpinski gasket carpet fractal antenna, for single and multiband applications. Design and simulation is done using HFSS 13.0 software and fabrication is done using photolithography etching method which gives adequate result for this type of antennas. By using vector network analyzer E5071C the designed antennas are tested and various plots like return loss, VSWR, smith chart and polar plot are verified. The designed antennas are used in implantable medical (IMD) applications and other wireless applications.[1-6].

A Comparative Analysis of Triband, Koch, Microstrip and Rectangular Carpet with Giuseppe Peano Fractal Antenna

“…Comparisons of different existing antennas such as tri-band [1], Koch [2], microstrip fractal [3] and rectangular carpet [5] have been made with the proposed antenna (Giuseppe peano) in this paper. By observing the results of existing antennas and proposed antenna, it has been concluded that the maximum gain of existing antennas is 6.8dB.…”

“…Koch fractal [2] antenna shows the value of gain as 6.8dB, 4.9dB and 2.8dB at respective frequency band. Similarly, the microstrip fractal [3] and rectangular carpet [5] shows the overall gain of 4dB and 3.8dB respectively. To increase the gain and the resonant frequencies the proposed antenna is designed.…”

“…The existing antennas like tri-band [1], Koch [2], microstrip [3] and rectangular carpet [5] are shown in Figure 1 The proposed antenna is designed by using Giuseppe peano fractal technique. In this a rectangular patch is designed by using equation (1) to (5). Proposed antenna is designed on FR4 epoxy substrate having Ԑ r =4.4 and h=1.6mm with resonant frequency f r =4GHz.…”

“…This technique can be achieved by using two properties of fractal antenna such as selfsimilarity and space-filling [4]. Similarity property of the fractals means that some of the parts are of the same shape of the whole structure but at different scale [5] [6]. To achieve the miniaturization the space-filling property is used.…”

A Design of Quad-Band Hexagonal Antenna with Fractal Slots using Inset Feeding Technique

“…Two properties are used to design the geometries of fractal antennas, one is selfsimilarity and the other is space-filling [5] [6]. Self-similarity property of fractal is used to divide the parts of whole structure at different scales and space-filling is used to achieve the miniaturization of antenna [7]. The geometries of fractal antenna are designed to achieve the wideband and multiband characteristics which are the need of modern wireless communication systems [8].…”