公开(公告)号：US20080024244A1

公开(公告)日：2008-01-31

申请号：US11829549

申请日：2007-07-27

申请人： Andrea Cathelin ,  Stephane Razafimandiby ,  Andreas Kaiser

发明人： Andrea Cathelin ,  Stephane Razafimandiby ,  Andreas Kaiser

IPC分类号： H03H9/00

CPC分类号： H03H9/0095 ,  H03H2009/02204

摘要： A filtering circuit based on a lattice structure comprising a first and a second input and a first and second output. The circuit further comprises two series impedance and two parallel impedance which each comprises an acoustic resonator associated with two inductive and capacitive components which can be adjusted by a first control value. The second and fourth impedance comprise each an acoustic resonator associated to two inductive and capacitive components which are adjustable by means of a second control value. A control circuit generates the two control values which simultaneously comprise a common mode potential and a differential mode potential which allows the emergence of first and second pass bands which are usable for realizing two different bandpass filters.

摘要翻译： 一种基于包括第一和第二输入以及第一和第二输出的晶格结构的滤波电路。 电路还包括两个串联阻抗和两个并联阻抗，每个阻抗均包括与两个电感和电容部件相关联的声谐振器，这两个电感和电容部件可以通过第一控制值进行调节。 第二和第四阻抗包括每个与谐振器相关联的声谐振器，两个电感和电容元件可通过第二控制值进行调节。 控制电路产生同时包括共模电位和差模电位的两个控制值，允许出现可用于实现两个不同带通滤波器的第一和第二通带。