Compact dual-band rejection filter based on complementary meander line split ring resonator
2009 (English)In: Progress in Electromagnetics Research Letters, ISSN 1937-6480, Vol. 8, 181-190 p.Article in journal (Refereed) Published
A general model for dual band rat-race couplers is presented through an odd-even mode analysis approach. The requirements for the impedances and electrical lengths of the branches are derived. To verify this model, a dual-band rat-race coupler is designed utilizing the balanced composite right/left handed transmission line. The whole structure is much more compact than the existing dual-band rat-race couplers and easy to fabricate. The simulated results are given. Return loss and port isolation of better than -30 dB are achieved at the central frequencies of both operating bands. Furthermore, the requirements of equal amplitude and balanced phase conditions are well fulfilled (within 0.5 dB and 5) over a frequency range of almost 50 and 90 MHz at the two central frequencies.
Place, publisher, year, edition, pages
2009. Vol. 8, 181-190 p.
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-10136ScopusID: 2-s2.0-70449584696OAI: oai:DiVA.org:kth-10136DiVA: diva2:209449
QC 201007202009-03-252009-03-252013-11-19Bibliographically approved