Pentagon Fractal Antenna for Above 6 Ghz band Applications (original) (raw)

1. MICROSTRIP ANTENNA BASED ON DURER PENTAGON FRACTAL PATCH FOR MULTIBAND WIRELESS APPLICATIONS

Modern telecommunication systems require miniature antennas with multiband characteristics that support multiple wireless applications. This paper presents a convex pentagon shaped microstrip antenna that works at 1.8GHz with a return loss of -19 dB. The antenna is powered using proximity coupled feed method implemented in a multilayer substrate. The pentagon shaped microstrip antenna is converted in to a dual band antenna by applying fractal shape into the antenna geometry. Here durer pentagon fractal concept is used to develop dual band antenna which produces multiple resonance at 1.8 GHZ and 2.45 GHz. The antenna finds suitable for cellular communication and Bluetooth / RFID applications. Size reduction up to 25.56 % in terms of patch size is achieved in the proposed fractal antenna in comparison to pentagon patch antenna operating in the first resonant frequency band.

MultibandCircular Fractal Antenna for Wireless Applications

2017

A circular fractal antenna is presented in this paper for wireless applications. Sierpinski fractal geometry is used to make circular fractals of scaled dimensions. The fractal antenna has the multiband operation due to the self-similar property in fractal geometry. Fractal geometry leads to improved bandwidth, radiation efficiency and reduced size. This antenna is designed using HFSS V15 simulator with finite element method. The proposed antenna resonant frequencies are centered at 2.4GHz, 4. 9.2 GHz with at Least 200 MHz bandwidth. Circular patch antenna is used as the basic geometry and 3 stages of iterations produced the proposed design. Radius of the base antenna is 24 mm.Thickness of substrate is 1.6mm.

Modelling and design of fractal antenna of multiband applications

Materials Today: Proceedings, 2021

Abstract This paper introduces the design as well as modelling of a multiband planar antenna based on fractal shapes. Sierpinski carpet as well as Minkowski fractal geometries are applied to a square shaped patch antenna. The result from this combination is multiband, small size, high gain as well as low return loss antenna. The proposed antenna cover multi-frequency bands such as, 3.4, 4.03, 5.8, 6.48, 6.78, 7.32, 8.26, 9.21, 10.09 GHz. Antenna parameters as well as performance have been calculated as well as tested by using FEKO software, where it is full wave electromagnetic software based on advanced numerical methods.

A novel compact stair-shaped multiband fractal antenna for wireless communication systems

Journal of Electrical Engineering, 2021

The growing demand for enhanced capacities, broadband services, and high transmission speeds to accommodate speech, image, multimedia, and data communication simultaneously puts a requirement for antenna to operate in multiple frequency bands. A novel compact fractal antenna based on self-similar stair-shaped fractal geometry is proposed in this paper. The fractal antenna is designed by modifying the patch antenna through the iterative process using stair-shaped fractal geometry. The third iteration results in a tri-band response, and the antenna resonate at 3.65, 4.825, and 6.325 GHz with impedance bandwidths of 75.6, 121.2, and 211.4 MHz, respectively. The antenna is designed in CST Microwave studio, and evaluated for operating bands and radiation characteristics. Prototype for the third iteration of the fractal antenna is fabricated on FR-4 substrate which is further tested for measured operating bands and radiation characteristics. The simulated and measured results show good ag...

Design of Multiband Fractal Antenna Array for Wireless Communication

ITM Web of Conferences

This work proposes a modified circular fractal antenna array for multiband applications, including WLAN (5.15–5.85 GHz), C-band applications (3.8–4.4 GHz), and X-band for satellite communication (7.1–7.76 GHz). High Frequency Structure Simulator (HFSS) is used to simulate the antenna. The substrate material is FR4 epoxy, which has a 4.4 relative permittivity and 1.6 mm of thickness. It is discovered that the antenna only covers a portion of the bandwidth of the aforementioned applications.

Design of Plus Shape Fractal Antenna for Various Applications

This paper describes design of a tri-band antenna based on fractal concepts. Fractal antenna exhibits multiband behavior due to self-similarity in their structure. Plus shaped micro-strip antenna utilizes two substrates of same dielectric material mounted above the other having individual dielectric constant of 4.4 and each of thickness 1.6 mm. This antenna is radiating at multiple resonant frequencies. The resultant resonant frequencies obtained are of triple bands i.e. 2.9GHz, 3.2GHz and 3.6GHz for IMT 200 and GSM application. The proposed plus shaped fractal antenna is simulated using the CST Studio 2010 and was found to perform well in terms of Bandwidth. Radiation pattern simulated results are in good agreement with the experimental results.