Miniaturized Broadband Antenna Combining Fractal Patterns and Self-Complementary Structures for UWB Applications

Vasil DIMITROV; Akira SAITOU; Kazuhiko HONJO

doi:10.1587/transcom.E95.B.1844

Miniaturized Broadband Antenna Combining Fractal Patterns and Self-Complementary Structures for UWB Applications

Vasil DIMITROV, Akira SAITOU, Kazuhiko HONJO

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Miniaturized broadband antennas combining a fractal pattern and a self-complementary structure are demonstrated for UWB applications. Using four kinds of fractal patterns generated with an octagon initiator, similar to a self-complementary structure, we investigate the effect of the fractal pattern on broadband performance. The lower band-edge frequency of the broad bandwidth is decreased by the reduced constant input impedance, which is controlled by the vacant area size inside the fractal pattern. The reduced constant input impedance is shown to be produced by the extended current distribution flowing along the vacant areas. Given the results, miniaturized broadband antennas, impedance-matched to 50 Ω, are designed and fabricated. The measured return loss was better than 10 dB between 2.95 and 10.7 GHz with a size of 2712.5 mm. The lower band-edge frequency was reduced by 28% compared with the initiator.

Publication: IEICE TRANSACTIONS on Communications Vol.E95-B No.5 pp.1844-1847

Publication Date: 2012/05/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1587/transcom.E95.B.1844

Type of Manuscript: LETTER

Category: Antennas and Propagation

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Vasil DIMITROV, Akira SAITOU, Kazuhiko HONJO, "Miniaturized Broadband Antenna Combining Fractal Patterns and Self-Complementary Structures for UWB Applications" in IEICE TRANSACTIONS on Communications, vol. E95-B, no. 5, pp. 1844-1847, May 2012, doi: 10.1587/transcom.E95.B.1844.
Abstract: Miniaturized broadband antennas combining a fractal pattern and a self-complementary structure are demonstrated for UWB applications. Using four kinds of fractal patterns generated with an octagon initiator, similar to a self-complementary structure, we investigate the effect of the fractal pattern on broadband performance. The lower band-edge frequency of the broad bandwidth is decreased by the reduced constant input impedance, which is controlled by the vacant area size inside the fractal pattern. The reduced constant input impedance is shown to be produced by the extended current distribution flowing along the vacant areas. Given the results, miniaturized broadband antennas, impedance-matched to 50 Ω, are designed and fabricated. The measured return loss was better than 10 dB between 2.95 and 10.7 GHz with a size of 2712.5 mm. The lower band-edge frequency was reduced by 28% compared with the initiator.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E95.B.1844/_p

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@ARTICLE{e95-b_5_1844,
author={Vasil DIMITROV, Akira SAITOU, Kazuhiko HONJO, },
journal={IEICE TRANSACTIONS on Communications},
title={Miniaturized Broadband Antenna Combining Fractal Patterns and Self-Complementary Structures for UWB Applications},
year={2012},
volume={E95-B},
number={5},
pages={1844-1847},
abstract={Miniaturized broadband antennas combining a fractal pattern and a self-complementary structure are demonstrated for UWB applications. Using four kinds of fractal patterns generated with an octagon initiator, similar to a self-complementary structure, we investigate the effect of the fractal pattern on broadband performance. The lower band-edge frequency of the broad bandwidth is decreased by the reduced constant input impedance, which is controlled by the vacant area size inside the fractal pattern. The reduced constant input impedance is shown to be produced by the extended current distribution flowing along the vacant areas. Given the results, miniaturized broadband antennas, impedance-matched to 50 Ω, are designed and fabricated. The measured return loss was better than 10 dB between 2.95 and 10.7 GHz with a size of 2712.5 mm. The lower band-edge frequency was reduced by 28% compared with the initiator.},
keywords={},
doi={10.1587/transcom.E95.B.1844},
ISSN={1745-1345},
month={May},}

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TY - JOUR
TI - Miniaturized Broadband Antenna Combining Fractal Patterns and Self-Complementary Structures for UWB Applications
T2 - IEICE TRANSACTIONS on Communications
SP - 1844
EP - 1847
AU - Vasil DIMITROV
AU - Akira SAITOU
AU - Kazuhiko HONJO
PY - 2012
DO - 10.1587/transcom.E95.B.1844
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E95-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2012
AB - Miniaturized broadband antennas combining a fractal pattern and a self-complementary structure are demonstrated for UWB applications. Using four kinds of fractal patterns generated with an octagon initiator, similar to a self-complementary structure, we investigate the effect of the fractal pattern on broadband performance. The lower band-edge frequency of the broad bandwidth is decreased by the reduced constant input impedance, which is controlled by the vacant area size inside the fractal pattern. The reduced constant input impedance is shown to be produced by the extended current distribution flowing along the vacant areas. Given the results, miniaturized broadband antennas, impedance-matched to 50 Ω, are designed and fabricated. The measured return loss was better than 10 dB between 2.95 and 10.7 GHz with a size of 2712.5 mm. The lower band-edge frequency was reduced by 28% compared with the initiator.
ER -