Multiband and wideband properties of printedfractal branched antennas

Sindou, M.; Ablart, G.; Sourdois, C.

doi:10.1049/el:19990179

Cited by 41 publications

(13 citation statements)

References 4 publications

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“…Using a curve fitting approach, to fit the parametric curves in Fig. 7, we obtain the primary resonant frequency of a Koch dipole as (14) where is the resonant frequency of the linear dipole antenna with the same (end-to-end) length as the Koch curve. The above curve fit expression is valid at or near the wire radius considered.…”

Section: A Lowest Resonant Frequencymentioning

confidence: 99%

On the relationship between fractal dimension and the performance of multi-resonant dipole antennas using koch curves

Vinoy

Abraham

Varadan

2003

IEEE Trans. Antennas Propagat.

154

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This paper relates for the first time, multiple resonant frequencies of fractal element antennas using Koch curves to their fractal dimension. Dipole and monopole antennas based fractal Koch curves studied so far have generally been limited to certain standard configurations of the geometry. It is possible to generalize the geometry by changing its indentation angle, to vary its fractal similarity dimension. This variation results in self-similar geometry which can be generated by a recursive algorithm. Such a variation is found to have a direct influence on the input characteristics of dipole antennas. The primary resonant frequency, the input resistance at this resonance, and the ratio of first two resonant frequencies, have all been directly related to the fractal dimension. Curve-fit expressions can also be obtained for the performance of antennas at their primary resonance, in terms of fractal iteration and fractal dimension. The antenna characteristics have been studied using extensive numerical simulations and are experimentally verified. These findings underscore the significance of fractal dimension as an important mathematical property of fractals that can be used as a design parameter for antennas. The use of these ideas would not only reduce the computational intensity of optimization approaches for design of fractal shaped antennas, but also help antenna designers approach the problem systematically. Design formulation for antennas based on other fractal geometries can be similarly obtained after identifying suitable parameters of variation. This would therefore help analytical design of multiband and multifunctional antennas using fractal geometries.Index Terms-Fractals, multifrequency antennas, wire antennas.

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Section: A Lowest Resonant Frequencymentioning

confidence: 99%

On the relationship between fractal dimension and the performance of multi-resonant dipole antennas using koch curves

Vinoy

Abraham

Varadan

2003

IEEE Trans. Antennas Propagat.

154

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“…This is confirmed by simulating the probe fed antenna with four, three, two and single multi-triangular patches included in the conventional (Fig. 4); compared to the conventional antenna resonating at 1.04 GHz (table 1) indicates multifunctionality [9]- [16] due to fractal nature of the proposed geometry. Also, the resonating frequency (1.04 GHz) of conventional (base) antenna reduces by 67.65% to 0.683 GHz with the proposed fourth iterative fractal antenna geometry.…”

Section: Results and Discussion 31 Reflection Lossmentioning

confidence: 59%

“…Therefore, bandwidth enhancement becomes necessary, when bandwidth available in multiband antenna is narrow. There are many known methods reported in the literatures [5], [8]- [9] to enhance the antenna bandwidth those include design of the antenna with log-periodic profile, use of a low dielectric substrate, increase of the substrate thickness, use of travellingwave topologies, use of efficient impedance matching and feeding techniques, use of multiple resonators and slot antenna geometry. The field pattern of an antenna and its control is second important parameter for effective wireless transmission and reception.…”

Section: Introductionmentioning

confidence: 99%

Verification of Multiband Characteristics in Iterative Fractal Antenna

Thakare¹

2016

JANT

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“…The design of antennas operating in multi-band (Guo et al, 2004, Lee et al, 2000, Llorens et al, 2003Sindou et al, 1999) allows the wireless devices to be used with only a single antenna for multiple wireless applications, and thus permits to reduce the size of the space required for antenna on the wireless equipment.…”

Section: Printed Arms Monopole Antennamentioning

confidence: 99%

Ultra-Wideband Printed Antennas Design

Srifi¹

2011

Ultra Wideband Communications: Novel Trends - Antennas and Propagation

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Multiband and wideband properties of printedfractal branched antennas

Cited by 41 publications

References 4 publications

On the relationship between fractal dimension and the performance of multi-resonant dipole antennas using koch curves

On the relationship between fractal dimension and the performance of multi-resonant dipole antennas using koch curves

Verification of Multiband Characteristics in Iterative Fractal Antenna

Ultra-Wideband Printed Antennas Design

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