公开(公告)号：US20060091979A1

公开(公告)日：2006-05-04

申请号：US10978395

申请日：2004-11-02

申请人： Sheng-Fuh Chang ,  Shuen-Chien Chang ,  Jia-Liang Cheng ,  Shih-Chieh Chen ,  Hung-Cheng Chen ,  Shu-Fen Tang ,  Albert Chen

发明人： Sheng-Fuh Chang ,  Shuen-Chien Chang ,  Jia-Liang Cheng ,  Shih-Chieh Chen ,  Hung-Cheng Chen ,  Shu-Fen Tang ,  Albert Chen

IPC分类号： H01P1/203

CPC分类号： H01P1/20363 ,  H01P1/20372 ,  H01P1/20381

摘要： A dual-band bandpass filter with stepped-impedance resonators uses only one circuit to generate dual-band effect. It adopts the principle of stepped-impedance resonator, which contains a connecting section and two coupling sections. The impedance and electrical length of the connecting section and coupling sections conforms to a selected condition to generate two passbands at desired frequencies. A multi-layer broadside-coupled parallel lines structure may be applied to increase coupling-amount between the parallel lines so that the dual-band bandpass filters have broader bandwidth and less loss.

摘要翻译： 带有阶梯型阻抗谐振器的双频带通滤波器仅使用一个电路来产生双频带效应。 它采用阶梯阻抗谐振器的原理，其包含连接部分和两个耦合部分。 连接部分和耦合部分的阻抗和电长度符合所选条件，以产生所需频率的两个通带。 可以应用多层宽边耦合并行线结构来增加并联线之间的耦合量，使得双频带通滤波器具有更宽的带宽和更小的损耗。