Multi Element Fractal Rectangular Curve Patch Antenna for Indoor Access Points (original) (raw)

A reduced size fractal rectangular curve patch antenna

2003

A novel fractal rectangular curve microstrip antenna is investigated as an efficient scheme of miniaturization. Based on simulation results the element possesses good size reduction ability without compromising significantly on the antenna's bandwidth and efficiency. The radiation patterns between the conventional quarter wavelength patch and the shorted fractal element are similar, concluding that the latter can be used to replace the former. Moreover, the novel geometry has several degrees of freedom that can be used to either reduce further the size of the antenna or keep the bandwidth to a satisfactory level. The novel geometry was also considered for production of circular polarization and exhibited very good results.

Design of Microstrip Patch Circular Monopole Fractal Antenna For Wireless Applications

The modern telecommunication system requires an antenna with wider bandwidth and smaller dimension than conventional antennas. This has initiated antenna research in various dimensions, one of which is used by a fractal shaped antenna element. Fractal is a concept being demanded for multi band operation. In this paper a circular shaped monopole fractal antenna using CoPlanar Waveguide feed (CPW) for wideband application has been proposed. The circular fractal patch and modified ground plane are employed to achieve the desired wideband characteristics. The antenna is optimized for a multi band operation. This antenna is simulated using Ansoft HFSS 11.0. For this design, low cost and readily available FR-4 substrate of relative permittivity of 4.8 and height 1mm has been used. The measured antenna parameters such as gain, radiation patterns and VSWR of the proposed antennas are found well for multi band operation.

Design and Analysis of Fractal Antenna

IRJET, 2022

The design suggestions for three antennas, each of which has a whole separate set of capabilities. The idea of fractal geometry is used by all three in the process of constructing small antennas that have superior performance than that of Microstrip Patch antennas (MPAs). Fractals are now one of the most fruitful areas of study in the world of antenna design. Their most notable advantage is their capacity to increase electrical length while basically maintaining the same amount of area and delivering improved performance. The first idea is to create a hybrid fractal, which combines elements from two different kinds of fractals—the Sierpinski Carpet and the Giuseppe Peanu—and superimposes them on top of one other in order to provide the antenna the capability of narrow-band operation. Due to its ability to resonate in the S-band, it carries with it the potential to be used for WiMAX applications. The second idea is to use an iterative self-similar design to create a multi-band fractal, which is the second part of the second proposal. The antenna achieves its multi-band capabilities by cutting circles out of squares while preserving electrical conductivity throughout. The fact that it can resonate at five different frequencies within the range of three gigahertz to twelve gigahertz gives it a wide variety of potential uses, all of which are feasible within this frequency range. The third suggestion is to use an antenna with a very wide band, the manufacture of which has already been completed. The smallest of the three patches, this one was designed by cutting hexagonal holes out of a circular patch, and optimization was accomplished via the use of parametric analysis.

DESIGN AND DEVELOPMENT OF A NOVEL FRACTAL ANTENNA FOR WIRELESS APPLICATIONS

An innovative concept is utilized to develop the fractal antenna by coalesce the Koch prefractal and meander line. This fractal antenna is proposed for multistandard wireless applications. The shape and dimensions of the proposed antenna are chosen to obtain the multiband behaviour as well as miniaturized structure. Initially two different fractal concepts have been chosen through previous research and merged them to obtain more than two resonant frequencies. The proposed design characterizes four bands at resonant frequencies 2.5 GHz, 6.4 GHz, 7.2 GHz and 8.15 GHz with a return loss of-12.05 dB,-16.68 dB,-14.87 dB and-26.51 dB respectively. This design also represents VSWR between the required range of 1 to 2 for the presented resonant frequencies with an appropriate value of gain in dB. The antenna is analysed with Ansoft HFSS-13.0 electromagnetic field solver.

A Novel Fractal Antenna in Planar Configuration for Wireless Devices

—In today's wireless communication, there has been an increasing need for more compact, portable and wideband radiators. There is a need to evolve antenna designs to minimum size which can be used in many practical applications in modern 2G, 3G, LTW, WiFi and WiMax wireless communications systems. Fractal antenna is one such antenna which is irregular in shape and it is mainly used for wireless applications. Thus, the objective is to design a novel fractal geometry which exhibits self similarity property and can be confined to space. The new proposed fractal antenna is designed in such a way that it can be operating at a frequency of 2.4GHz. This structure is built up through replication of a base shape, improving antenna performance. The purpose of this project is to explore fractal elements antennas through simulation and design experimentation. In the proposed approach, simulators are carried out using FEKO simulator 6.1 and the results are compared with the existing structures of monopole and Koch fractal. The design is implemented in planar structure also to improve its characteristics when compared to the wire monopole. Keywords—Fractal antenna, Koch fractal, Antenna radiation pattern, Theta gain and Phi gain.

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.

A new printed multiband fractal triangular antenna for wireless application

TELKOMNIKA Telecommunication Computing Electronics and Control, 2024

This letter investigates the properties of a novel multi-band fractal antenna with a triangular geometry that can expand its bandwidth, provide multiband functionality, and enable the best smart antenna technology. The antenna employs an FR4 as support with dimensions of 75×75 mm 2 and a thickness of 1.6 mm. A microstrip line with an impedance of 50 ohms feeds the patch. The high-frequency structure simulator (HFSS) is applied to develop and simulate the patch. The vector network analyzer AVR ROHDE and SCHWARZ ZVB20 carried out the experimental tests of the prototype antenna. The suggested antenna's simulation results show that it runs on five main frequency bands: 1.840 GHz, 2.770 GHz, 2.940 GHz, 4.330 GHz, and 5.790 GHz, with a high gain that can exceed 6.01dB and an efficiency of 82%. In the operational bands, the voltage standing wave ratio (VSWR) is between one and two. The results from the simulation and the experiment are extremely similar.

Design and Analysis of Fractal Antenna: A Review

In the overview paper approximately the designing and evaluation of fractal antennas that N Antenna is a sensor and transducer that converts electric alerts into electromagnetic waves and electromagnetic waves into electric alerts. In contemporary-day wi-fi conversation structures an antenna with low cost, small size, clean fabrication with proper overall performance is required. For the one's structures, microstrip antennas are excellent due to their massive advantages. Microstrip antennas also are referred to as patch antennas. This paper explains the layout and overall performance troubles of patch antennas in conjunction with their packages. In this paper, initially, we attention to the layout and overall performance troubles of microstrip antennas. The use of fractal geometries has notably impacted many regions of technology and engineering; certainly considered one among them is antennas. Antennas the use of a number of those geometries for diverse telecommunications packages are already to be had commercially. The use of fractal geometries has been proven to enhance numerous antenna functions to various extents.

DESIGN OF T-SHAPED FRACTAL PATCH ANTENNA FOR WIRELESS APPLICATIONS

Since the evolution of the patch antennas, there is rapid growth observed in the applications of the patch antenna. There are number of advantages such as small size, ease of fabrication and installment, and a stable performance, so there are huge number of designs has been developed and presented by the researchers time to time. Taking an example of the mobile phone antennas, the antenna must have a small size and must be capable to resonate at multiple frequency bands. Reviewing about the various requirements of the antenna design for the wireless applications a novel multiple band fractal patch antenna has been designed. In this paper, a T-shaped patch antenna has been designed and discussed and fractal geometry has been applied to it in order to obtain self-similar characteristics. The dimensions of the Square Patch has been taken as 36 x 36 mm. Dimension of ground has been taken as been taken as 50 x 50 mm. The substrate material used for antenna design is FR-4 having dielectric constant 4.4. Antenna resonates at four operating bands 3.5 GHz, 4.48 GHz, 6.1 GHz and 8.17 GHz. This antenna has return loss of-16.76 dB,-16 dB,-28.63 dB and-15.03dB with bandwidth of 432 MHz, 332 MHz, 295 MHz and 364 MHz at resonant frequencies. Further this antenna has impressive gain of 3.55 dBi, 5.7 dBi and 3.16 dBi and 3.27 dBi at corresponding frequencies. This antenna can be useful for Wi-Max, 4G network, WLAN, Satellite & RADAR communication applications.

A Novel Γ-shape Fractal Antenna for Wideband Communications

Procedia Technology, 2013

In this paper, a nove-shaped Fractal antenna is proposed for wideband applications. The proposed antenna is made of iterations-shape around the base shape with 90 0 rotations in each step. Results show that the proposed antenna achieves a wide bandwidth ranging from 880 MHz to 2720 MHz (102%). The simple structure of the proposed antenna makes it appropriate for many wireless communications such as RFID, GPS, DCS-1800, PCS-1900, IMT-2000/UMTS, ISM (including WLAN), WiFi and Bluetooth. Details of the proposed antenna design are presented and discussed.