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".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Une petite antenne imprimée omnidirectionnelle à large bande comprenant des éléments trapézoïdaux disposés symétriquement est étudiée pour le rapport d'onde stationnaire de tension (VSWR) à large bande et les caractéristiques de basse fréquence centrale. Deux éléments trapézoïdaux symétriques sont imprimés sur la face inférieure du substrat et sont reliés à un petit plan de masse imprimé sur la même face sur deux bandes. Les éléments trapézoïdaux et les bandes sont excités de manière électromagnétiquement couplée par l'élément monopôle placé entre les éléments trapézoïdaux. Deux caractéristiques de résonance apparaissent car la partie résonance change en fonction de la fréquence et une large bande passante devient possible. La fréquence centrale peut être abaissée en modifiant la forme des éléments trapézoïdaux. La longueur de l'élément monopolaire est un paramètre très important pour l'adaptation d'impédance. L'espace entre l'élément monopôle et les éléments trapézoïdaux est un paramètre important pour l'optimisation de deux caractéristiques de résonance. Il est démontré que l'antenne proposée atteint une bande passante VSWR (≤2) de 28.9 %, un profil bas et des caractéristiques de diagramme omnidirectionnel. Les résultats mesurés et numériques sont en bon accord.
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Copier
Makoto SUMI, Keizo CHO, "A Small Broadband Omni-Directional Printed Antenna Comprising Symmetrically Arranged Trapezoid Elements" in IEICE TRANSACTIONS on Communications,
vol. E94-B, no. 4, pp. 960-967, April 2011, doi: 10.1587/transcom.E94.B.960.
Abstract: A small broadband omni-directional printed antenna comprising symmetrically arranged trapezoid elements is investigated for broadband Voltage Standing Wave Ratio (VSWR) and low center frequency characteristics. Two symmetrical trapezoid elements are printed on the bottom side of the substrate and are connected to a small ground plane printed on the same side over two strips. The trapezoid elements and the strips are excited in an electromagnetically coupled manner by the monopole element set between the trapezoid elements. Two resonance characteristics arise because the resonance part changes depending on the frequency, and a broad bandwidth becomes possible. The center frequency can be lowered by changing the shapes of the trapezoid elements. The monopole element length is a very important parameter for impedance matching. The space between the monopole element and the trapezoid elements is an important parameter for the optimization of two resonance characteristics. The proposed antenna is shown to achieve a VSWR bandwidth (≤2) of 28.9%, a low profile, and omni-directional pattern features. The measured and numerical results are in good agreement.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E94.B.960/_p
Copier
@ARTICLE{e94-b_4_960,
author={Makoto SUMI, Keizo CHO, },
journal={IEICE TRANSACTIONS on Communications},
title={A Small Broadband Omni-Directional Printed Antenna Comprising Symmetrically Arranged Trapezoid Elements},
year={2011},
volume={E94-B},
number={4},
pages={960-967},
abstract={A small broadband omni-directional printed antenna comprising symmetrically arranged trapezoid elements is investigated for broadband Voltage Standing Wave Ratio (VSWR) and low center frequency characteristics. Two symmetrical trapezoid elements are printed on the bottom side of the substrate and are connected to a small ground plane printed on the same side over two strips. The trapezoid elements and the strips are excited in an electromagnetically coupled manner by the monopole element set between the trapezoid elements. Two resonance characteristics arise because the resonance part changes depending on the frequency, and a broad bandwidth becomes possible. The center frequency can be lowered by changing the shapes of the trapezoid elements. The monopole element length is a very important parameter for impedance matching. The space between the monopole element and the trapezoid elements is an important parameter for the optimization of two resonance characteristics. The proposed antenna is shown to achieve a VSWR bandwidth (≤2) of 28.9%, a low profile, and omni-directional pattern features. The measured and numerical results are in good agreement.},
keywords={},
doi={10.1587/transcom.E94.B.960},
ISSN={1745-1345},
month={April},}
Copier
TY - JOUR
TI - A Small Broadband Omni-Directional Printed Antenna Comprising Symmetrically Arranged Trapezoid Elements
T2 - IEICE TRANSACTIONS on Communications
SP - 960
EP - 967
AU - Makoto SUMI
AU - Keizo CHO
PY - 2011
DO - 10.1587/transcom.E94.B.960
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E94-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2011
AB - A small broadband omni-directional printed antenna comprising symmetrically arranged trapezoid elements is investigated for broadband Voltage Standing Wave Ratio (VSWR) and low center frequency characteristics. Two symmetrical trapezoid elements are printed on the bottom side of the substrate and are connected to a small ground plane printed on the same side over two strips. The trapezoid elements and the strips are excited in an electromagnetically coupled manner by the monopole element set between the trapezoid elements. Two resonance characteristics arise because the resonance part changes depending on the frequency, and a broad bandwidth becomes possible. The center frequency can be lowered by changing the shapes of the trapezoid elements. The monopole element length is a very important parameter for impedance matching. The space between the monopole element and the trapezoid elements is an important parameter for the optimization of two resonance characteristics. The proposed antenna is shown to achieve a VSWR bandwidth (≤2) of 28.9%, a low profile, and omni-directional pattern features. The measured and numerical results are in good agreement.
ER -