Application of electromagnetic bandgaps to the design of ultra-wide bandpass filters with good out-of-band performance

被引：143

作者：

Garcia-Garcia, Joan ^{[1
]}

Bonache, Jordi ^{[1
]}

Martin, Ferran ^{[1
]}

机构：

[1] Univ Autonoma Barcelona, Dept Elect Engn, GEMMA Grp, Bellaterra 08193, Barcelona, Spain

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2006年 / 54卷 / 12期

关键词：

electromagnetic bandgap (EBG); microstrip filters; ultra-wideband (UWB) technology;

D O I：

10.1109/TMTT.2006.886155

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 study, a new technique for the design of ultrawide bandpass filters with spurious suppression over a very wide band is presented. The method consists on the combination of a well-known analytical design approach to achieve wide bandwidths with an electromagnetic bandgap structure, which is fundamental for spurious suppression. To illustrate the technique, a microstrip of ultra-wide bandpass filter centered at 3.4 GHz with a bandwidth covering 4.8 GHz is implemented in an Arlon substrate (permittivity epsilon(r) = 2.4, thickness h = 0.675 mm). Measured filter characteristics are good with in-band insertion losses below 0.90 dB and return losses better than 10 dB. Out-of-band performance is also good with spurious passband attenuation higher than 30 dB up to at least 20 GHz.

引用

页码：4136 / 4140

页数：5