New periodic-loaded electromagnetic bandgap coplanar waveguide with complete spurious passband suppression

被引:22
作者
Martín, F
Falcone, F
Bonache, J
Lopetegi, T
Laso, MAG
Sorolla, M
机构
[1] Univ Autonoma Barcelona, Dept Elect Engn, E-08193 Barcelona, Spain
[2] Univ Publ Navarra, Dept Elect Engn, Pamplona, Spain
关键词
coplanar waveguide (CPW) technology; electromagnetic band gap (EBG); microwave filters;
D O I
10.1109/LMWC.2002.805536
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
In this letter, coplanar waveguides (CPW) periodically loaded with shunt capacitances and periodically perturbed by varying the distance between the central strip (of constant width) and ground planes are studied. It is demonstrated that the multiple spurious passbands above the Bragg frequency, inherent to the presence of the reactive elements, can be completely and efficiently rejected by means of very simple geometry perturbation. This result is in contrast to previous works, where the rejection of multiple frequencies requires complex layout patterns and reveals that the elimination of spurious frequency bands in periodic loaded CPWs can not be merely estimated from the Fourier transform of the perturbation geometry.
引用
收藏
页码:435 / 437
页数:3
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