Title :
NRD-guide spurious mode suppressor using self-contained periodic planar EBG structure
Author :
Cassivi, Yves ; Wu, Ke
Author_Institution :
Dept. de Genie Electr., Ecole Polytech. de Montreal, Que., Canada
Abstract :
A new mode suppressor for nonradiative dielectric (NRD) waveguides is presented in the design of hybrid planar/NRD circuits. This suppressor circuit makes use of self-contained planar periodic EBG (electromagnetic bandgap) structure that is part of the planar ground plane of the NRD guide to attenuate unwanted waveguide modes generated in the NRD-guide by modal transition of planar and NRD-guide or other discontinuity effects. The topology of the mode suppressor is presented with design steps. Its usefulness is experimentally demonstrated in an NRD filter application in which an increase of the out-of-band rejection level of the filter is obtained.
Keywords :
band-pass filters; energy gap; network topology; nonradiative dielectric waveguides; periodic structures; planar waveguides; waveguide components; waveguide filters; waveguide theory; NRD filter application; NRD guide; NRD-guide spurious mode suppressor; discontinuity effects; filter out-of-band rejection level; hybrid planar/NRD circuit design; modal transition; mode suppressor; mode suppressor topology; nonradiative dielectric waveguide; planar ground plane; self-contained periodic planar EBG structure; self-contained planar periodic EBG structure; self-contained planar periodic electromagnetic bandgap structure; suppressor circuit; unwanted waveguide mode attenuation; Circuits; Dielectrics; Electromagnetic waveguides; Filters; Metamaterials; Periodic structures; Planar waveguides; Waveguide components; Waveguide discontinuities; Waveguide transitions;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei, Taiwan
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985459
