title: ÐÐ¸ÐºÑÐ¾Ð¿Ð¾Ð»Ð¾ÑÐºÐ¾Ð²ÑÐµ Ð¿Ð¾Ð»Ð¾ÑÐ¾Ð²ÑÐµ ÑÐ¸Ð»ÑÑÑÑ Ñ Ð¿ÐµÑÐµÑÑÑÐ°Ð¸Ð²Ð°ÐµÐ¼Ð¾Ð¹ Ð¿Ð¾Ð»Ð¾ÑÐ¾Ð¹ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÑÐ¿ÑÐ°Ð²Ð»ÑÐµÐ¼ÑÑ Ð¿Ð¾Ð´Ð»Ð¾Ð¶ÐµÐº
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: The tunable microstrip bandpass filters based on controlled substrates
Creators: name: ÐÐ¾Ð¿ÑÐ»Ð¾Ð², Ð¯ÐºÐ¾Ð²
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: Ð¼Ð¸ÐºÑÐ¾Ð¿Ð¾Ð»Ð¾ÑÐºÐ¾Ð²ÑÐ¹ Ð¿Ð¾Ð»Ð¾ÑÐ¾Ð²Ð¾Ð¹ ÑÐ¸Ð»ÑÑÑ
Ð¿ÐµÑÐµÑÑÑÐ°Ð¸Ð²Ð°ÐµÐ¼ÑÐ¹ ÑÐ¸Ð»ÑÑÑ
Ð¶Ð¸Ð´ÐºÐ¸Ð¹ ÐºÑÐ¸ÑÑÐ°Ð»Ð»
Ð¼Ð¸ÐºÑÐ¾Ð¿Ð¾Ð»Ð¾ÑÐºÐ¾Ð²Ð°Ñ Ð»Ð¸Ð½Ð¸Ñ
microstrip bandpass filter
tunable filter
liquid crystal
microstrip line

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description: The subject of the research work is microstrip filters. The aim of the work is to analyze tunable microstrip bandpass filters based onÂ controlled substrates. The principle of microstrip filter operation, different implementations of basicÂ filter topologies and different filter tuning mechanisms were studied; the basic structures of microstrip bandpass filters were modeled. Also the influence ofÂ dielectric constant on the central frequency of the device was explored, theÂ microstrip bandpass filter with parallel coupled resonators with LC-substrateÂ characteristics tuned to a central frequency of 1,45 GHz and having a bandwidth ofÂ 80 MHz was selected and developed. The influence of the substrate thickness on theÂ amplitude-frequency curve of such a filter was studied and a configuration of theÂ filter with alternating substrates was proposed.