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Proceedings ArticleDOI

Design and analysis of fractal antenna for UWB applications

01 Mar 2012-pp 1-4
TL;DR: The design and analysis of fractal antenna that contributes ultra wide band characteristics and maximum gain of 6.2dB and efficiency of 98.66%.
Abstract: This paper presents the design and analysis of fractal antenna that contributes ultra wide band characteristics. Fractal technique is adopted to improve radiation characteristics of the antenna. The impedance bandwidth of the proposed fractal antenna is 9.4 GHz ranging from 3.2GHz to 12.6 GHz with maximum gain of 6.2dB and efficiency of 98.66%. Analysis of antenna is done using CST Microwave Studio.
Citations
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Proceedings ArticleDOI
11 Apr 2013
TL;DR: In this paper, the authors proposed a multi-fractal antenna operating in ultra wide band range for WLAN and WiMAX applications, where the addition of Koch and Sierpinski fractal techniques gives rise to better impedance bandwidth and return loss characteristics.
Abstract: This paper presents a multi-fractal antenna operating in ultra wide band range for WLAN and WiMAX applications. The novel idea of multi-fractal geometry is introduced into the conventional triangular patch antenna with microstrip feed. The addition of Koch and Sierpinski fractal techniques gives rise to better impedance bandwidth and return loss characteristics. The proposed antenna exhibits resonant frequency at 5.48 GHz with a return loss of -31.9dB to satisfy the band specifications for wireless LAN applications IEEE802.11a (5.15-5.35 GHz, 5.725-5.875 GHz) and WiMAX application at 5GHz (5.25-5.85 GHz). It is found that the antenna exhibits omni-directional radiation pattern in H plane with a maximum gain of 3.5dB. The antenna exhibits a stable radiation pattern throughout the operating frequency range of 4.68-6.43 GHz. The antenna covers the upper and lower bands of WLAN operating frequencies. The simulation was performed in High Frequency Structure Simulator.

26 citations


Cites background from "Design and analysis of fractal ante..."

  • ...FCC and the International Telecommunication Union Radio communication Sector (ITU-R) currently define UWB in terms of a transmission from an antenna for which the emitted signal bandwidth exceeds 500 MHz or 20% of the center frequency....

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Proceedings ArticleDOI
25 Mar 2013
TL;DR: The fractal techniques such as the Koch and Sierpinski Fractal techniques are been introduced into the conventional triangular patch antenna with microstrip feed to obtain better return loss and impedance bandwidth characteristics.
Abstract: This paper presents a Koch-like sided Sierpinski multi-fractal antenna for ultra wide band applications. The fractal techniques such as the Koch and Sierpinski Fractal techniques are been introduced into the conventional triangular patch antenna with microstrip feed to obtain better return loss and impedance bandwidth characteristics. The simulation was performed in High Frequency Structure Simulator (HFSS 13). The antenna parameters such as resonant frequency, return loss, radiation pattern and surface current distribution are simulated and discussed in this paper.

14 citations

Proceedings ArticleDOI
11 Apr 2013
TL;DR: The design and analysis of fractal antenna is presented which uses the self similarity property of Fractal geometry to develop antenna elements that are wideband and compact possessing highly desirable properties.
Abstract: Wddeband application put a new demand on antennas pertaining to size, gain, efficiency, bandwidth and more. This paper presents the design and analysis of fractal antenna which uses the self similarity property of fractal geometry. This unique property is exploited to develop antenna elements that are wideband and compact possessing highly desirable properties. The presented antenna is circle inscribed octagon shaped. Simulation results show that the antenna can be used in different frequency ranges exhibiting wideband properties. Radiation pattern and gain characteristics are also analysed.

14 citations


Cites background or methods from "Design and analysis of fractal ante..."

  • ...Also, in higher iterations there is no significant change in antenna properties [4]....

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  • ...113 The array factor of the fractal antenna is given by [4],...

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Proceedings ArticleDOI
19 Mar 2015
TL;DR: A low profile compact CPW fed fractal patch antenna that exhibits a wider bandwidth and reduced returnloss and is found to be suitable for UWB low profile applications is proposed.
Abstract: In this paper a low profile compact CPW fed fractal patch antenna is proposed for UWB applications. Slotted circular shape is iterated using fractal geometry that exhibits a wider bandwidth and reduced returnloss. Bandwidth is extended using ground plate modifications and outer circular radius tuning techniques. The low cost dielectric material FR4 (e=4.4) is used as substrate. The proposed antenna is simulated in FEM method using Ansoft HFSS v.13. Overall size of the miniaturized antenna is 30*32.4*1.6mm3 with operating frequency band from 1.6–10.4 GHz. Bandwidth is 8.8 GHz measured from −10dB and VSWR = 2. Input impedance is 50Ω and it exhibits the omni directional pattern. Finally it is found to be suitable for UWB low profile applications.

10 citations

Journal ArticleDOI
TL;DR: In this article, a planar monopole antenna with beveled stubs is proposed for UWB applications, which is attributed to the addition of suitable stubs to a basic circular geometry of the radiator as an improved impedance matching technique to achieve enhanced radiation performances.
Abstract: A novel compact planar monopole antenna for UWB applications is proposed in this paper. The proposed novelty of the antenna is attributed to the addition of suitable beveled stubs to a basic circular geometry of the radiator as an improved impedance matching technique to achieve enhanced radiation performances. The feed circuit is a tapered microstrip line with a matching section over a semi-elliptical ground plane. The proposed antenna achieves su-cient impedance bandwidth for a VSWR < 2 for frequencies from 3{15GHz covering the entire UWB range (3.1{10.6GHz), which is verifled experimentally. Also this design achieves good gain, constant group delay and a near omni- directional radiation pattern over the UWB band. The UWB characteristics of the antenna are evaluated in frequency and time domains. Results reveal that the proposed antenna has ∞at transfer function, linear phase and good impulse response with virtually no ringing which are the essential requirements for an UWB antenna for e-cient pulse transmission/reception. The simulated and measured results of these parameters are presented. The performance results of the novel antenna with other designs is also compared and presented.

7 citations

References
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Book
01 Jan 1982
TL;DR: The most up-to-date resource available on antenna theory and design as mentioned in this paper provides an extended coverage of ABET design procedures and equations making meeting ABET requirements easy and preparing readers for authentic situations in industry.
Abstract: The most-up-to-date resource available on antenna theory and design Expanded coverage of design procedures and equations makes meeting ABET design requirements easy and prepares readers for authentic situations in industry New coverage of microstrip antennas exposes readers to information vital to a wide variety of practical applicationsComputer programs at end of each chapter and the accompanying disk assist in problem solving, design projects and data plotting-- Includes updated material on moment methods, radar cross section, mutual impedances, aperture and horn antennas, and antenna measurements-- Outstanding 3-dimensional illustrations help readers visualize the entire antenna radiation pattern

14,065 citations

Book
31 Oct 2000
TL;DR: Feeding Techniques and Modeling, Design and Analysis of Microstrip Antenna Arrays: Parallel and Series Feed Systems, and Theory and Design of Active Integrated Micro Strip Antenna Amplifiers.
Abstract: Microstrip Radiators: Various Microstrip Antenna Configurations. Feeding Techniques and Modeling. Applications. Radiation Field. Surface Waves and Photonic Band-Gap Structures. Analytical Models for Microstrip Antennas: Transmission Line Model. Cavity Model. Generalized Cavity Model. Multi-port Network Model (MNM). Radiation Fields. Aperture Admittance. Mutual Admittance. Model for Coaxial Probe in Microstrip Antennas. Comparison of Analytical Models. Full-Wave Analysis of Microstrip Antennas: Spectral Domain Full-Wave Analysis. Mixed-Potential Integral Equation Analysis. Finite-Difference Time Domain Analysis.Rectangular Microstrip Antenna: Models for Rectangular Patch Antenna. Design Considerations for Rectangular Patch Antennas. Tolerance Analysis of Rectangular Microstrip Antennas. Mechanical Tuning of Patch Antennas. Quarter-wave Rectangular Patch Antenna. Circular Disk and Ring Antennas: Analysis of a Circular Disk Microstrip Antenna. Design Considerations for Circular Disk Antennas. Semicircular Disk and Circular Sector Microstrip Antennas. Comparison Of Rectangular And Circular Disk Microstrip Antennas. Circular Ring or Annular Ring Microstrip Antenna. Circular Sector Microstrip Ring Antenna. Microstrip Ring Antennas of Non-Circular Shapes. Dipoles and Triangular Patch Antennas: Microstrip Dipole and Center-Fed Dipoles. Triangular Microstrip Patch Antenna. Design of an Equilateral Triangular Patch Antenna. Microstrip Slot Antennas: Microstrip-Fed Rectangular Slot Antennas. CPW-Fed Slot Antennas. Annular Slot Antennas. Tapered Slot Antennas (TSA). Comparison of Slot Antennas with Microstrip Antennas. Circularly Polarized Microstrip Antennas and Techniques: Various Types of Circularly Polarized Microstrip Antennas. Singly-Fed Circularly Polarized Microstrip Antennas. Dual-Orthagonal Feed Circularly Polarized Microstrip Antennas. Circularly Polarized Traveling-Wave Microstrip-Line Arrays. Bandwidth Enhancement Techniques. Sequentially Rotated Arrays. Broad-Banding of Microstrip Antennas: Effect of Substrate Parameters on Bandwidth. Selection of Suitable Patch Shape. Selection of Suitable Feeding Technique. Multi-Moding Techniques. Other Broadbanding Techniques. Multifrequency Operation. Loaded Microstrip Antennas and Applications: Polarization Diversity Using Microstrip Antennas. Frequency Agile Microstrip Antennas. Radiation Pattern Control of Microstrip Antennas. Loading Effect of a Short. Compact Patch Antennas. Planar Inverted F Antenna. Dual-Frequency Microstrip Antennas. Dual-Frequency Compact Microstrip Antennas. Active Integrated Microstrip Antennas: Classification of Active Integrated Microstrip Antennas. Theory and Design of Active Integrated Microstrip Antenna Oscillators. Theory and Design of Active Integrated Microstrip Antenna Amplifiers. Frequency Conversion Active Integrated Microstrip Antenna Theory and Design. Design and Analysis of Microstrip Antenna Arrays: Parallel and Series Feed Systems. Mutual Coupling. Design of Linear Arrays. Design of Planar Arrays. Monolithic Integrated Phased Arrays.

3,612 citations


"Design and analysis of fractal ante..." refers methods in this paper

  • ...Radius of circular patch (ar), for 3GHz , is calculated using equation(1) [10]:-...

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Journal ArticleDOI
TL;DR: In this article, a new ultra-wideband (UWB) antenna for UWB applications is proposed, which is designed to operate from 3.2 to 12 GHz and consists of a rectangular patch with two steps, a single slot on the patch, and a partial ground plane.
Abstract: In this paper, we propose a new ultra-wideband (UWB) antenna for UWB applications. The proposed antenna is designed to operate from 3.2 to 12 GHz. It consists of a rectangular patch with two steps, a single slot on the patch, and a partial ground plane. Details of the proposed antenna design and measured results are presented and discussed. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 399–401, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11392

304 citations


"Design and analysis of fractal ante..." refers background in this paper

  • ...Various matching techniques are proposed for achieving wide band characteristics....

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Journal ArticleDOI
TL;DR: In this paper, a square planar monopole antenna with two feed points and a bevelled variant is designed to improve pattern and impedance bandwidth, and these antennas exhibit an excellent performance compared to existing planar mono-mono antennas.
Abstract: Planar monopole antennas with multiple feed points are proposed to improve pattern and impedance bandwidth. A square planar monopole antenna including two feed points and a bevelled variant are designed. These antennas exhibit an excellent performance compared to existing planar monopoles.

246 citations

Journal ArticleDOI
TL;DR: In this article, the effect of varying the plate width, feed gap height, and feedline width on the impedance bandwidth was examined, and it was shown that for a fixed groundplane size, that optimization of these parameters can yield an impedance bandwidth ratio of 43:1 without using any broadbanding techniques.
Abstract: This paper describes a printed rectangular-plate monopole fed by microstrip line The effect of varying the plate width, feed-gap height, and feedline width on the impedance bandwidth is examined It is shown that for a fixed ground-plane size, that optimization of these parameters can yield an impedance bandwidth ratio of 43:1, without using any broadbanding techniques © 2005 Wiley Periodicals, Inc Microwave Opt Technol Lett 47: 153–154, 2005; Published online in Wiley InterScience (wwwintersciencewileycom) DOI 101002/mop21109

108 citations


"Design and analysis of fractal ante..." refers methods in this paper

  • ...Feed gap optimization [3-5], shaping of ground plane [6], multiple feed technique [7], can also be used to achieve wide band characteristics....

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