[ Étude sur le comportement d’un filtre passe bande en basse fréquence et haute fréquence ]
Volume 40, Issue 3, September 2023, Pages 1044–1051
KISOKI MBUNGA Henri1
1 Professeur associé, Faculté des sciences, Département de physique et des sciences appliquées, Université pédagogique nationale (UPN), Kinshasa-Ngaliema, RD Congo
Original language: French
Copyright © 2023 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
In this article, it is a question of studying the behavior of a band pass filter in BF and HF with passive elements. Said filter is widely used in electronics and telecommunications with many applications such as: manufacture and assembly of loudspeakers, limitations of working frequencies in a given interval according to its band, etc. We preferred to do this study based on mathematical and physical models which allowed us to discuss and interpret the different results obtained after simulation at the physics laboratory of the National Pedagogical University (UPN/RDCongo-Kinshasa) and which are presented as follows: In Low Frequency (BF): The capacitor blocked the signal and behaved like an open switch, on the other hand the coil allowed the signal to pass through. It acted as a closed switch. Therefore, the voltage at the filter output was zero; In High Frequency (HF): We had the opposite behavior in BF and the voltage at the output of the filter was always zero. The studied behavior led us to the determination of the band pass filter. The tool used for the simulation in Matlab, very powerful engineering software.
Author Keywords: Band Pass filter, Filter, Matlab, simulation.
Volume 40, Issue 3, September 2023, Pages 1044–1051
KISOKI MBUNGA Henri1
1 Professeur associé, Faculté des sciences, Département de physique et des sciences appliquées, Université pédagogique nationale (UPN), Kinshasa-Ngaliema, RD Congo
Original language: French
Copyright © 2023 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
In this article, it is a question of studying the behavior of a band pass filter in BF and HF with passive elements. Said filter is widely used in electronics and telecommunications with many applications such as: manufacture and assembly of loudspeakers, limitations of working frequencies in a given interval according to its band, etc. We preferred to do this study based on mathematical and physical models which allowed us to discuss and interpret the different results obtained after simulation at the physics laboratory of the National Pedagogical University (UPN/RDCongo-Kinshasa) and which are presented as follows: In Low Frequency (BF): The capacitor blocked the signal and behaved like an open switch, on the other hand the coil allowed the signal to pass through. It acted as a closed switch. Therefore, the voltage at the filter output was zero; In High Frequency (HF): We had the opposite behavior in BF and the voltage at the output of the filter was always zero. The studied behavior led us to the determination of the band pass filter. The tool used for the simulation in Matlab, very powerful engineering software.
Author Keywords: Band Pass filter, Filter, Matlab, simulation.
Abstract: (french)
Dans cet article, il est question d’étudier le comportement d’un filtre passe bande en Basse Fréquence et Haute Fréquence avec des éléments passifs. Ledit filtre est très utilisé en Electronique et en Télécommunication avec de nombreuses applications telles que : fabrication et montage des enceintes acoustiques, limitation des fréquences de travail dans un intervalle donné suivant sa bande etc. Nous avons préféré de faire cette étude en s’appuyant sur le modèles mathématiques et physiques, lesquels modèles, nous ont permis à discuter et interpréter les différents résultats obtenus après simulation en laboratoire de Physique de l’Université Pédagogique Nationale (UPN/RD Congo-Kinshasa) et qui sont présentés de la manière suivante : En Basse Fréquence (BF) : le condensateur a bloqué le signal et s’est comporté comme un interrupteur ouvert, par contre, la bobine a laissé traverser le signal. Elle a agi comme un interrupteur fermé. Par conséquent, la tension à la sortie de filtre était nulle. En Haute Fréquence (HF) : nous avions le comportement contraire que celui en BF et la tension à la sortie de filtre était toujours nulle. Le comportement étudié nous a conduits à la détermination du filtre passe bande. L’outil utilisé pour la simulation est le Matlab, logiciel très puissant en ingénierie.
Author Keywords: Filtre, Filtre Passe bande, Matlab, Simulation.
How to Cite this Article
KISOKI MBUNGA Henri, “Study on the behavior of a bandpass filter at low frequency and high frequency,” International Journal of Innovation and Applied Studies, vol. 40, no. 3, pp. 1044–1051, September 2023.
