Quasi-TEM approach of coupled-microstrip lines and its application to the analysis of microstrip filters
2012 (English)In: International Journal of RF and Microwave Computer-Aided Engineering, ISSN 1096-4290, E-ISSN 1099-047X, Vol. 22, no 1, 131-139 p.Article in journal (Refereed) Published
In this article, the quasi-TEM approach is successfully used to analyze coupled-microstrip lines of finite length, which are usually used for the coupling between the source/load and resonators in microstrip filters. First, an orthogonal expansion method is used to extract the per-length inductance and capacitance matrices. The authors then obtain the impedance matrix or admittance matrix, which relates the voltages and currents at both ends of coupled-microstrip lines. To verify our theory, an example is presented, i.e., a Y-shaped dual-mode bandpass microstrip filter, for which, the equivalent circuit model based on the quasi-TEM analysis of coupled-microstrip lines is accurately set up. The approach in this article is applicable to planar microstrip lines with arbitrary number of conductors, under the quasi-TEM assumption.
Place, publisher, year, edition, pages
2012. Vol. 22, no 1, 131-139 p.
coupled-microstrip lines, microstrip filter, quasi-TEM approach, Y-shaped dual-mode bandpass microstrip filter
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-75536DOI: 10.1002/mmce.20592ISI: 000298263100016ScopusID: 2-s2.0-83555165182OAI: oai:DiVA.org:kth-75536DiVA: diva2:490789
QC 201202062012-02-062012-02-062013-11-19Bibliographically approved