New parallel λ/2-microstrip line filters with transmission zeros at finite frequencies

被引：0
作者：
Amari, S [1 ]
Tadeson, G [1 ]
Cihlar, J [1 ]
Rosenberg, U [1 ]
机构：
[1] Royal Mil Coll Canada, Dept Elect & Comp Engn, Kingston, ON K7K 7B4, Canada
来源：
2003 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, VOLS 1-3 | 2003年
关键词：
bandpass filters; elliptic function filters; filter synthesis; transmission zeros;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The paper presents a new class of lambda/2-microstrip line filters with transmission zeros at finite frequencies. The filters take advantage of the. difference between the propagation constants of the even and odd modes of two symmetric coupled microstrip lines to generate the transmission zeros in addition to the reflection zeros of the passband. A simple model is used to show that the transmission zeros are not due to cross-coupling of non-adjacent resonators but rather to internal anti-resonances in the structure. The results obtained from a full-wave solution using a commercial software package are in good agreement with those of the model. Examples of filters with transmission zeros in the lower or upper stop-bands are presented.
引用
收藏
页码：543 / 546
页数：4
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