Title :
Three-dimensional analysis of coupled-cavity waveguides
Author_Institution :
Ansoft Corp., Pittsburgh, PA, USA
Abstract :
For the design and analysis of coupled-cavity waveguides (CCW) and their coupling to ridge waveguides, a 2D analysis based on effective index of refraction is insufficient. The 3D finite-element analysis in this paper shows how the individual "defects" in the CCW radiate into space, and how this depends on dielectric thickness. Coupling with a dielectric waveguide was optimized for a CCW with three defects, but longer CCWs still had a large ripple in the pass band. Since CCWs consist of coupled resonators, they show similarities to Chebychev band-pass filters. Design techniques for such filters may be helpful to design CCWs.
Keywords :
cavity resonators; coupled circuits; dielectric waveguides; finite element analysis; ridge waveguides; 3D finite-element analysis; CCW defects; Chebychev band-pass filters; coupled resonators; coupled-cavity waveguide 3D analysis; dielectric thickness; dielectric waveguide; pass band ripple; ridge waveguides; Couplings; Dielectric losses; Dielectric materials; Electromagnetic waveguides; Frequency; Integrated optics; Optical refraction; Optical resonators; Optical waveguides; Polarization;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1220079
