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
Pour réaliser les filtres passe-bande compacts à ultra-large bande (UWB), un nouveau prototype de filtre avec deux tronçons court-circuités chargés des deux côtés d'un résonateur à impédance étagée (SIR) via les lignes couplées en parallèle est proposé sur la base d'une théorie de synthèse de filtres distribués. . Le circuit équivalent de ce filtre est établi, tandis que la fonction de transfert correspondante de type Chebyshev à 7 pôles est dérivée pour la synthèse du filtre. Ensuite, une technique basée sur des circuits distribués a été présentée pour synthétiser les valeurs des éléments de ce filtre. À titre d'exemple, un filtre FCC UWB avec une bande passante fractionnaire (FWB) à -10 dB jusqu'à 110 % a été conçu à l'aide du prototype proposé, puis remodelé par un simulateur de circuit micro-ondes commercial pour vérifier l'exactitude et la précision de la théorie de synthèse. De plus, en termes de simulateur EM, le filtre a été encore optimisé et réalisé expérimentalement en utilisant une ligne microruban. De bons accords entre les résultats de mesure et les résultats théoriques valident l'efficacité de notre technique. De plus, par rapport au filtre UWB de type SIR conventionnel sans stubs court-circuités, le nouveau améliore considérablement la sélectivité et les caractéristiques hors bande (en particulier dans les basses -45 dB à 1-2 GHz) pour satisfaire aux exigences de la FCC. masque spectral. Le filtre conçu présente également une taille très compacte, une perte d'insertion assez faible, des jupes abruptes, un retard de groupe plat et une structure facilement réalisable (la dimension de l'espace de couplage dans ce filtre est de 0.15 mm). De plus, il convient de noter qu'en termes de technique de conception présentée, le prototype de filtre proposé peut également être utilisé pour réaliser facilement des filtres UWB avec un autre FBW même supérieur à 110 %.
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Chun-Ping CHEN, Zhewang MA, Tetsuo ANADA, "Novel Compact Ultra-Wideband Bandpass Filter by Application of Short-Circuited Stubs and Stepped-Impedance-Resonator" in IEICE TRANSACTIONS on Electronics,
vol. E91-C, no. 11, pp. 1786-1792, November 2008, doi: 10.1093/ietele/e91-c.11.1786.
Abstract: To realize the compact ultra-wideband (UWB) bandpass filters, a novel filter prototype with two short-circuited stubs loaded at both sides of a stepped-impedance resonator (SIR) via the parallel coupled lines is proposed based on a distributed filter synthesis theory. The equivalent circuit of this filter is established, while the corresponding 7-pole Chebyshev-type transfer function is derived for filter synthesis. Then, a distributed-circuit-based technique was presented to synthesize the elements' values of this filter. As an example, a FCC UWB filter with the fractional bandwidth (FWB) @ -10 dB up to 110% was designed using the proposed prototype and then re-modeled by commercial microwave circuit simulator to verify the correctness and accuracy of the synthesis theory. Furthermore, in terms of EM simulator, the filter was further-optimized and experimentally-realized by using microstrip line. Good agreements between the measurement results and theoretical ones validate the effectiveness of our technique. In addition, compared with the conventional SIR-type UWB filter without short-circuited stubs, the new one significantly improves the selectivity and out-of-band characteristics (especially in lower one -45 dB@1-2 GHz) to satisfy the FCC's spectrum mask. The designed filter also exhibits very compact size, quite low insertion loss, steep skirts, flat group delay and the easily-fabricatable structure (the coupling gap dimension in this filter is 0.15 mm) as well. Moreover, it should be noted that, in terms of the presented design technique, the proposed filter prototype can be also used to easily realize the UWB filters with other FBW even greater than 110%.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e91-c.11.1786/_p
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@ARTICLE{e91-c_11_1786,
author={Chun-Ping CHEN, Zhewang MA, Tetsuo ANADA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Novel Compact Ultra-Wideband Bandpass Filter by Application of Short-Circuited Stubs and Stepped-Impedance-Resonator},
year={2008},
volume={E91-C},
number={11},
pages={1786-1792},
abstract={To realize the compact ultra-wideband (UWB) bandpass filters, a novel filter prototype with two short-circuited stubs loaded at both sides of a stepped-impedance resonator (SIR) via the parallel coupled lines is proposed based on a distributed filter synthesis theory. The equivalent circuit of this filter is established, while the corresponding 7-pole Chebyshev-type transfer function is derived for filter synthesis. Then, a distributed-circuit-based technique was presented to synthesize the elements' values of this filter. As an example, a FCC UWB filter with the fractional bandwidth (FWB) @ -10 dB up to 110% was designed using the proposed prototype and then re-modeled by commercial microwave circuit simulator to verify the correctness and accuracy of the synthesis theory. Furthermore, in terms of EM simulator, the filter was further-optimized and experimentally-realized by using microstrip line. Good agreements between the measurement results and theoretical ones validate the effectiveness of our technique. In addition, compared with the conventional SIR-type UWB filter without short-circuited stubs, the new one significantly improves the selectivity and out-of-band characteristics (especially in lower one -45 dB@1-2 GHz) to satisfy the FCC's spectrum mask. The designed filter also exhibits very compact size, quite low insertion loss, steep skirts, flat group delay and the easily-fabricatable structure (the coupling gap dimension in this filter is 0.15 mm) as well. Moreover, it should be noted that, in terms of the presented design technique, the proposed filter prototype can be also used to easily realize the UWB filters with other FBW even greater than 110%.},
keywords={},
doi={10.1093/ietele/e91-c.11.1786},
ISSN={1745-1353},
month={November},}
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TY - JOUR
TI - Novel Compact Ultra-Wideband Bandpass Filter by Application of Short-Circuited Stubs and Stepped-Impedance-Resonator
T2 - IEICE TRANSACTIONS on Electronics
SP - 1786
EP - 1792
AU - Chun-Ping CHEN
AU - Zhewang MA
AU - Tetsuo ANADA
PY - 2008
DO - 10.1093/ietele/e91-c.11.1786
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E91-C
IS - 11
JA - IEICE TRANSACTIONS on Electronics
Y1 - November 2008
AB - To realize the compact ultra-wideband (UWB) bandpass filters, a novel filter prototype with two short-circuited stubs loaded at both sides of a stepped-impedance resonator (SIR) via the parallel coupled lines is proposed based on a distributed filter synthesis theory. The equivalent circuit of this filter is established, while the corresponding 7-pole Chebyshev-type transfer function is derived for filter synthesis. Then, a distributed-circuit-based technique was presented to synthesize the elements' values of this filter. As an example, a FCC UWB filter with the fractional bandwidth (FWB) @ -10 dB up to 110% was designed using the proposed prototype and then re-modeled by commercial microwave circuit simulator to verify the correctness and accuracy of the synthesis theory. Furthermore, in terms of EM simulator, the filter was further-optimized and experimentally-realized by using microstrip line. Good agreements between the measurement results and theoretical ones validate the effectiveness of our technique. In addition, compared with the conventional SIR-type UWB filter without short-circuited stubs, the new one significantly improves the selectivity and out-of-band characteristics (especially in lower one -45 dB@1-2 GHz) to satisfy the FCC's spectrum mask. The designed filter also exhibits very compact size, quite low insertion loss, steep skirts, flat group delay and the easily-fabricatable structure (the coupling gap dimension in this filter is 0.15 mm) as well. Moreover, it should be noted that, in terms of the presented design technique, the proposed filter prototype can be also used to easily realize the UWB filters with other FBW even greater than 110%.
ER -