The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Dans cet article, une antenne imprimée en F inversé permettant de rayonner une onde polarisée circulairement autour de sa fréquence de résonance est proposée. Pour obtenir un bon rapport axial sur la bande de fréquence avec une perte de retour de 10 dB, un élément rectangulaire est chargé perpendiculairement au niveau de la ligne d'alimentation. Le rapport axial et la fréquence donnant le rapport axial minimum peuvent être ajustés par le rapport de la longueur à la largeur de l'antenne entière et par la dimension de l'élément rectangulaire chargé. Le principe de fonctionnement de la polarisation circulaire est expliqué à l'aide des distributions de courant électrique. De plus, l’approche de l’amélioration de la bande passante est discutée. Les bandes passantes simulées et mesurées de la perte de retour de 10 dB avec un rapport axial de 3 dB sont respectivement de 2.375 GHz à 2.591 GHz (216 MHz) et de 2.350 à 2.534 GHz (184 MHz). La dimension de l'antenne proposée est de 0.067λ2c (λc est la longueur d'onde à la fréquence centrale). L'antenne proposée est compacte et planaire, et est donc utile pour la polarisation circulaire dans la bande ISM.
Takafumi FUJIMOTO
Nagasaki University
Keigo SHIMIZU
Nagasaki University
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Takafumi FUJIMOTO, Keigo SHIMIZU, "A Small Printed Inverted-F Antenna for Circular Polarization" in IEICE TRANSACTIONS on Communications,
vol. E102-B, no. 2, pp. 197-204, February 2019, doi: 10.1587/transcom.2018ISP0005.
Abstract: In this paper, a printed inverted-F antenna for radiating circularly polarized wave around its resonant frequency is proposed. To get good axial ratio at the frequency band with 10dB-return loss, a rectangular element is loaded at the feeding line perpendicularly. The axial ratio and the frequency giving the minimum axial ratio can be adjusted by the ratio of the length to the width of the whole antenna and by the dimension of the loaded rectangular element. The operational principle for circular polarization is explained using the electric current distributions. Moreover, the approach of the enhancement for the bandwidth is discussed. The simulated and measured bandwidths of the 10dB-return loss with a 3dB-axial ratio are 2.375GHz-2.591GHz (216MHz) and 2.350-2.534GHz (184MHz), respectively. The proposed antenna's dimension is 0.067λ2c (λc is the wavelength at the center frequency). The proposed antenna is compact and planar, and is therefore useful for circular polarization in the ISM band.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2018ISP0005/_p
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@ARTICLE{e102-b_2_197,
author={Takafumi FUJIMOTO, Keigo SHIMIZU, },
journal={IEICE TRANSACTIONS on Communications},
title={A Small Printed Inverted-F Antenna for Circular Polarization},
year={2019},
volume={E102-B},
number={2},
pages={197-204},
abstract={In this paper, a printed inverted-F antenna for radiating circularly polarized wave around its resonant frequency is proposed. To get good axial ratio at the frequency band with 10dB-return loss, a rectangular element is loaded at the feeding line perpendicularly. The axial ratio and the frequency giving the minimum axial ratio can be adjusted by the ratio of the length to the width of the whole antenna and by the dimension of the loaded rectangular element. The operational principle for circular polarization is explained using the electric current distributions. Moreover, the approach of the enhancement for the bandwidth is discussed. The simulated and measured bandwidths of the 10dB-return loss with a 3dB-axial ratio are 2.375GHz-2.591GHz (216MHz) and 2.350-2.534GHz (184MHz), respectively. The proposed antenna's dimension is 0.067λ2c (λc is the wavelength at the center frequency). The proposed antenna is compact and planar, and is therefore useful for circular polarization in the ISM band.},
keywords={},
doi={10.1587/transcom.2018ISP0005},
ISSN={1745-1345},
month={February},}
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TY - JOUR
TI - A Small Printed Inverted-F Antenna for Circular Polarization
T2 - IEICE TRANSACTIONS on Communications
SP - 197
EP - 204
AU - Takafumi FUJIMOTO
AU - Keigo SHIMIZU
PY - 2019
DO - 10.1587/transcom.2018ISP0005
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E102-B
IS - 2
JA - IEICE TRANSACTIONS on Communications
Y1 - February 2019
AB - In this paper, a printed inverted-F antenna for radiating circularly polarized wave around its resonant frequency is proposed. To get good axial ratio at the frequency band with 10dB-return loss, a rectangular element is loaded at the feeding line perpendicularly. The axial ratio and the frequency giving the minimum axial ratio can be adjusted by the ratio of the length to the width of the whole antenna and by the dimension of the loaded rectangular element. The operational principle for circular polarization is explained using the electric current distributions. Moreover, the approach of the enhancement for the bandwidth is discussed. The simulated and measured bandwidths of the 10dB-return loss with a 3dB-axial ratio are 2.375GHz-2.591GHz (216MHz) and 2.350-2.534GHz (184MHz), respectively. The proposed antenna's dimension is 0.067λ2c (λc is the wavelength at the center frequency). The proposed antenna is compact and planar, and is therefore useful for circular polarization in the ISM band.
ER -