天津职业技术师范大学学报
天津職業技術師範大學學報
천진직업기술사범대학학보
JOURNAL OF TIANJING UNIVERSITY OF TECHNOLOGY AND EDUCATION
2012年
4期
9-12
,共4页
陷波%微带低通滤波器%L形开路枝节
陷波%微帶低通濾波器%L形開路枝節
함파%미대저통려파기%L형개로지절
notch band%micro-strip low-pass filter%L-type open stub
提出了一种寄生陷波频带的方法,用于低通滤波器通带内,可以实现部分阻带功能。该方法在传统切比雪夫Ⅰ型低通滤波器上寄生一对完全对称的L形开路枝节,实现了一种陷波功能,进而对该枝节的几何参数与陷波特性之间的关系进行了研究。结果表明:改变L形开路枝节的几何尺寸,可以灵活调节陷波频带的中心频率和带宽。实验结果对该设计进行了验证。
提齣瞭一種寄生陷波頻帶的方法,用于低通濾波器通帶內,可以實現部分阻帶功能。該方法在傳統切比雪伕Ⅰ型低通濾波器上寄生一對完全對稱的L形開路枝節,實現瞭一種陷波功能,進而對該枝節的幾何參數與陷波特性之間的關繫進行瞭研究。結果錶明:改變L形開路枝節的幾何呎吋,可以靈活調節陷波頻帶的中心頻率和帶寬。實驗結果對該設計進行瞭驗證。
제출료일충기생함파빈대적방법,용우저통려파기통대내,가이실현부분조대공능。해방법재전통절비설부Ⅰ형저통려파기상기생일대완전대칭적L형개로지절,실현료일충함파공능,진이대해지절적궤하삼수여함파특성지간적관계진행료연구。결과표명:개변L형개로지절적궤하척촌,가이령활조절함파빈대적중심빈솔화대관。실험결과대해설계진행료험증。
A low-pass filter with notched band is proposed and implemented. Inside the passband of filter, stopband function is realized by inserting a pair of L-type stubs into the Chebyshev I filter. These stubs are with symmetrical structure. Therefore, the notched band can be easily generated and set at any desired frequency by changing parameters. Relationship between the parameters of L-stubs and characteristics of notch-bands is also discussed. Finally, the design is verified by full-wave EM simulation and the experiments.