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
Cet article présente la conception de filtres passe-bande (BPF) double bande composés de résonateurs d'impédance échelonnée (SIR) λ/2 et symétriquement/asymétriquement appariés λ/4 pour les applications WLAN. Les filtres couvrent à la fois les fréquences de fonctionnement de 2.45 et 5.2 GHz. Le mécanisme de double couplage est utilisé dans la conception du filtre pour fournir des itinéraires alternatifs pour les signaux de fréquences sélectionnées. Un filtre prototype est composé de SIR λ/2 et symétriques λ/4. Le filtre à large bande d'arrêt amélioré est ensuite développé à partir du filtre avec les SIR symétriques λ/4 remplacés par les asymétriques. Les SIR asymétriques λ/4 ont leurs fréquences de résonance les plus élevées isolées des SIR d'E/S adjacents et étendent le filtre amélioré jusqu'à une limite supérieure de bande d'arrêt au-delà de dix fois la fréquence fondamentale. En outre, le filtre pourrait posséder une structure de couplage croisé qui introduit des zéros de transmission par les bords de la bande passante pour améliorer la sélectivité du signal. L'alimentation en ligne à prises est adoptée dans ce circuit pour créer des pôles d'atténuation supplémentaires afin d'améliorer les niveaux de rejet de la bande d'arrêt. Des expériences sont menées pour vérifier les performances du circuit.
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Min-Hua HO, Hao-Hung HO, Mingchih CHEN, "Symmetric/Asymmetrical SIRs Dual-Band BPF Design for WLAN Applications" in IEICE TRANSACTIONS on Electronics,
vol. E92-C, no. 9, pp. 1137-1143, September 2009, doi: 10.1587/transele.E92.C.1137.
Abstract: This paper presents the dual-band bandpass filters (BPFs) design composed of λ/2 and symmetrically/asymmetrically paired λ/4 stepped impedance resonators (SIRs) for the WLAN applications. The filters cover both the operating frequencies of 2.45 and 5.2 GHz. The dual-coupling mechanism is used in the filter design to provide alternative routes for signals of selected frequencies. A prototype filter is composed of λ/2 and symmetrical λ/4 SIRs. The enhanced wide-stopband filter is then developed from the filter with the symmetrical λ/4 SIRs replaced by the asymmetrical ones. The asymmetrical λ/4 SIRs have their higher resonances frequencies isolated from the adjacent I/O SIRs and extend the enhanced filter an upper stopband limit beyond ten time the fundamental frequency. Also, the filter might possess a cross-coupling structure which introduces transmission zeros by the passband edges to improve the signal selectivity. The tapped-line feed is adopted in this circuit to create additional attenuation poles for improving the stopband rejection levels. Experiments are conducted to verify the circuit performance.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E92.C.1137/_p
Copier
@ARTICLE{e92-c_9_1137,
author={Min-Hua HO, Hao-Hung HO, Mingchih CHEN, },
journal={IEICE TRANSACTIONS on Electronics},
title={Symmetric/Asymmetrical SIRs Dual-Band BPF Design for WLAN Applications},
year={2009},
volume={E92-C},
number={9},
pages={1137-1143},
abstract={This paper presents the dual-band bandpass filters (BPFs) design composed of λ/2 and symmetrically/asymmetrically paired λ/4 stepped impedance resonators (SIRs) for the WLAN applications. The filters cover both the operating frequencies of 2.45 and 5.2 GHz. The dual-coupling mechanism is used in the filter design to provide alternative routes for signals of selected frequencies. A prototype filter is composed of λ/2 and symmetrical λ/4 SIRs. The enhanced wide-stopband filter is then developed from the filter with the symmetrical λ/4 SIRs replaced by the asymmetrical ones. The asymmetrical λ/4 SIRs have their higher resonances frequencies isolated from the adjacent I/O SIRs and extend the enhanced filter an upper stopband limit beyond ten time the fundamental frequency. Also, the filter might possess a cross-coupling structure which introduces transmission zeros by the passband edges to improve the signal selectivity. The tapped-line feed is adopted in this circuit to create additional attenuation poles for improving the stopband rejection levels. Experiments are conducted to verify the circuit performance.},
keywords={},
doi={10.1587/transele.E92.C.1137},
ISSN={1745-1353},
month={September},}
Copier
TY - JOUR
TI - Symmetric/Asymmetrical SIRs Dual-Band BPF Design for WLAN Applications
T2 - IEICE TRANSACTIONS on Electronics
SP - 1137
EP - 1143
AU - Min-Hua HO
AU - Hao-Hung HO
AU - Mingchih CHEN
PY - 2009
DO - 10.1587/transele.E92.C.1137
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E92-C
IS - 9
JA - IEICE TRANSACTIONS on Electronics
Y1 - September 2009
AB - This paper presents the dual-band bandpass filters (BPFs) design composed of λ/2 and symmetrically/asymmetrically paired λ/4 stepped impedance resonators (SIRs) for the WLAN applications. The filters cover both the operating frequencies of 2.45 and 5.2 GHz. The dual-coupling mechanism is used in the filter design to provide alternative routes for signals of selected frequencies. A prototype filter is composed of λ/2 and symmetrical λ/4 SIRs. The enhanced wide-stopband filter is then developed from the filter with the symmetrical λ/4 SIRs replaced by the asymmetrical ones. The asymmetrical λ/4 SIRs have their higher resonances frequencies isolated from the adjacent I/O SIRs and extend the enhanced filter an upper stopband limit beyond ten time the fundamental frequency. Also, the filter might possess a cross-coupling structure which introduces transmission zeros by the passband edges to improve the signal selectivity. The tapped-line feed is adopted in this circuit to create additional attenuation poles for improving the stopband rejection levels. Experiments are conducted to verify the circuit performance.
ER -