窄带LC带通滤波器的设计与实现  

Design and Realization of Narrow Band LC Band Pass Filter

作　　者：王勇[1] 卢中华[1] 

机构地区：[1]船舶重工集团公司723所,扬州225001

出　　处：《舰船电子对抗》2011年第4期115-117,共3页Shipboard Electronic Countermeasure

摘　　要：为适应现代舰载电子战设备对低频滤波器的严格要求,通过对传统带通滤波器的结构进行适当的网络变换,得到了一种可靠的电路结构。该结构将原有集总参数带通网络的电路元件参数值转化成常见量值,同时最大程度地吸收了集总元件的寄生参数,使滤波器的性能更加稳定。测试结果表明:采用该结构的滤波器具有很窄的带宽、较高的阻带抑制度以及优良的电压反射系数等性能。A reliable circuit structure of LC band pass filter is obtained in order to meet the strict requirements of modern shipborne electronic warfare equipments to low frequency filter,through the proper network transformation for the traditional band pass filter. The circuit element parameter value of original lumped parameter band pass network is transformed into ordinary value in this structure,at the same time the parasitic parameters of the lumped element are absorbed farthest, which make the filter performance more stably. The test results show that the filter has the charac- teristics of narrow bandwidth, considerable ratio of stop-band suppression, excellent voltage reflec- tance and so on.

关 键 词：窄带 带通滤波器 电感-电容滤波器 

分 类 号：TN713.5[电子电信—电路与系统]