Title :
Experimental Demonstration of Local Quasi-TEM Gap Modes in Single-Hard-Wall Waveguides
Author :
Valero-Nogueira, Alejandro ; Alfonso, Esperanza ; Herranz, Jose I. ; Kildal, Per-Simon
Author_Institution :
Univ. Politec. de Valencia, Valencia, Spain
Abstract :
This letter reports an experimental study of a gap waveguide which is able to support a plurality of degenerate local quasi-TEM modes. No sidewalls are needed to separate these modes, which is a very useful property in the upper microwave and millimeter-wave bands. The waveguiding media is formed in the gap between a conducting plate and a hard surface. The working principle is described first. Next a practical realization is explained and tested experimentally.
Keywords :
plates (structures); rectangular waveguides; conducting plate; local quasiTEM gap modes; microwave bands; millimeter-wave bands; rectangular waveguides; single-hard-wall waveguides; Gap waveguide; hard surface; metamaterials; millimeter waves; quasi-TEM waveguide;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2009.2027051
