Metallic post coated by a dielectric tube in waveguide, a NB filter design

E. Vafiadis, I. A. Tsoukalas, J. N. Sahalos

Research output: Contribution to journalArticlepeer-review


The discontinuity problem of a metallic post coated by a dielectric tube in a rectangular waveguide has been solved numerically.-From the solution parametric curves have been derived displaying the parameters of the T-equivalent circuit in dependence of the post geometrie. Several cases of the dielectric tube permittivity are considered. For some special relations between the frequency, the dielectric constant and the radius of the post the reflection or the transmission coefficient becomes equal to zero. These relations give narrow-band filters. Experimental results have shown the utility of the method as a filter design tool.

Original languageEnglish
Pages (from-to)195-203
Number of pages9
JournalArchiv für Elektrotechnik
Issue number3
Publication statusPublished - May 1987


Dive into the research topics of 'Metallic post coated by a dielectric tube in waveguide, a NB filter design'. Together they form a unique fingerprint.

Cite this