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A distributed-element filter is an electronic filter in which capacitance, inductance, and resistance (the elements of the circuit) are not localised in discrete capacitors, inductors, and resistors as they are in conventional filters. Its purpose is to allow a range of signal frequencies to pass, but to block others. Conventional filters are constructed from inductors and capacitors, and the circuits so built are described by the lumped element model, which considers each element to be "lumped together" at one place. That model is conceptually simple, but it becomes increasingly unreliable as the frequency of the signal increases, or equivalently as the wavelength decreases. The distributed-element model applies at all frequencies, and is used in transmission-line theory; many distributed

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rdfs:label
  • Distributed-element filter (en)
  • Filtre à éléments distribués (fr)
  • Filtro a elementi distribuiti (it)
rdfs:comment
  • A distributed-element filter is an electronic filter in which capacitance, inductance, and resistance (the elements of the circuit) are not localised in discrete capacitors, inductors, and resistors as they are in conventional filters. Its purpose is to allow a range of signal frequencies to pass, but to block others. Conventional filters are constructed from inductors and capacitors, and the circuits so built are described by the lumped element model, which considers each element to be "lumped together" at one place. That model is conceptually simple, but it becomes increasingly unreliable as the frequency of the signal increases, or equivalently as the wavelength decreases. The distributed-element model applies at all frequencies, and is used in transmission-line theory; many distributed (en)
  • Un filtre à éléments distribués est un filtre électronique dans lequel la capacité, l'inductance et la résistance (les éléments du circuit) ne sont pas localisées dans des condensateurs, des inducteurs et des résistances discrets comme dans les filtres classiques. Son but est de laisser passer une gamme de fréquences de signaux, mais d'en bloquer d'autres. Les filtres conventionnels sont construits à partir d'inductances et de condensateurs, et les circuits ainsi construits sont décrits par le (en), qui considère que chaque élément est "localisé" à un endroit. Ce modèle est simple d'un point de vue conceptuel, mais il devient de moins en moins fiable lorsque la fréquence du signal augmente ou, de manière équivalente, lorsque la longueur d'onde diminue. Le (en) s'applique à toutes les fré (fr)
  • Un filtro a elementi distribuiti è un filtro in cui capacità, induttanza e resistenza (gli elementi del circuito) non sono localizzati in condensatori, induttori e resistori discreti come invece lo sono nei filtri convenzionali. Il loro scopo è lasciar passare un intervallo di frequenze dei segnali, ma di bloccare le altre. I filtri convenzionali vengono realizzati con induttori e condensatori e i circuiti così costruiti sono descritti dal modello a elementi concentrati, che considera ogni elemento come se fosse "interamente concentrato" in unico punto. Questo modello è concettualmente semplice, ma diventa sempre meno accurato all'aumentare della frequenza dei segnali, o equivalentemente al diminuire della lunghezza d'onda. Il modello a elementi distribuiti si applica a tutte le frequenze (it)
foaf:depiction
  • http://commons.wikimedia.org/wiki/Special:FilePath/Microstrip-bandpass-filter.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Microstrip_Low_Pass_Bowtie_Stub_Filter.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Interdigital_Filter.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Microstrip_Distributed_Element_Filter_Technology.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Microstrip_Hairpin_Filter.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Microstrip_Hairpin_Filter_And_Low_Pass_Stub_Filter.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Stripline_butterfly_stub_filter.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Stripline_capacitive_gap_filter.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Stripline_filter_low-pass_form_1.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Stripline_filter_low-pass_form_2.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Stripline_filter_low-pass_stubs.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Stripline_filter_lumped_equivalents.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Stripline_filter_more_lumped_equivalents.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Stripline_hairpin_filter_2.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Stripline_interdigital_filter.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Stripline_parallel-coupled_lines_filter.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Stripline_stub_filter.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Stripline_via_key.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/LNB_dissassembled.jpg
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