RU2008152467A

RU2008152467A - ADJUSTABLE LC FILTER WITH ADJUSTABLE WIDTH

Info

Publication number: RU2008152467A
Application number: RU2008152467/09A
Authority: RU
Inventors: Лилия Владиславовна Насонова (RU); Лилия Владиславовна Насонова; Игорь Михайлович Ясинский (RU); Игорь Михайлович Ясинский; Андрей Николаевич Яковлев (RU); Андрей Николаевич Яковлев
Priority date: 2008-12-29
Filing date: 2008-12-29
Publication date: 2010-07-10
Also published as: RU2396702C1

Abstract

Полосовой LC-фильтр с регулируемой шириной полосы пропускания, состоящий из первой и второй катушек индуктивности, первые выводы которых соединены между собой, а также с третьей катушкой индуктивности и первым конденсатором, вторые выводы третьей катушки индуктивности и первого конденсатора соединены с общей шиной, отличающийся тем, что в схему устройства дополнительно введены четвертая и пятая катушки индуктивности, второй и третий конденсаторы, первый и второй варикапы, при этом четвертая катушка индуктивности подключена к входной потенциальной клемме устройства, а второй ее вывод соединены со вторым выводом первой катушки индуктивности, с первыми выводами второго конденсатора и первого варикапа, пятая катушка индуктивности подключена к выходной потенциальной клемме устройства, а второй ее вывод соединен со вторым выводом второй катушки индуктивности, с первым выводом третьего конденсатора и с первым выводом второго варикапа, вторые выводы второго и третьего конденсаторов, а также первого и второго варикапов соединены с общей шиной. Band-pass LC filter with an adjustable bandwidth, consisting of the first and second inductors, the first terminals of which are connected to each other, as well as the third inductor and the first capacitor, the second terminals of the third inductor and the first capacitor are connected to a common bus, characterized in that the fourth and fifth inductors, the second and third capacitors, the first and second varicaps are additionally introduced into the device circuit, while the fourth inductor is connected to the input the potential terminal of the device, and its second terminal is connected to the second terminal of the first inductor, with the first terminals of the second capacitor and the first varicap, the fifth inductor is connected to the potential output terminal of the device, and its second terminal is connected to the second terminal of the second inductor, with the first terminal the third capacitor and with the first output of the second varicap, the second conclusions of the second and third capacitors, as well as the first and second varicaps are connected to a common bus.

Claims

Band-pass LC filter with an adjustable bandwidth, consisting of the first and second inductors, the first terminals of which are connected to each other, as well as the third inductor and the first capacitor, the second terminals of the third inductor and the first capacitor are connected to a common bus, characterized in that the fourth and fifth inductors, the second and third capacitors, the first and second varicaps are additionally introduced into the device circuit, while the fourth inductor is connected to the input the potential terminal of the device, and its second terminal is connected to the second terminal of the first inductor, with the first terminals of the second capacitor and the first varicap, the fifth inductor is connected to the potential output terminal of the device, and its second terminal is connected to the second terminal of the second inductor, with the first terminal the third capacitor and with the first output of the second varicap, the second conclusions of the second and third capacitors, as well as the first and second varicaps are connected to a common bus.