Analysis and design of slitted waveguides with suppressed slot-mode using periodic FDTD.
Access Status
Authors
Date
2012Collection
Type
Metadata
Show full item recordAbstract
The characteristics of the slot- and perturbed TE10 modes in a slitted waveguide are studied for the purpose of suppressing the undesired slot-mode. The use of the finite difference time domain (FDTD) with periodic boundary conditions allows the extraction of the individual complex waven umbers of the two modes, and thus the tracking of the modes as modifications are made to the structure. Two structures are presented, the first suppressing the propagation of the slot-mode, and the second suppressing the radiation of the slot-mode. Experimental validation is presented supporting the numerical results. It will be shown that a wide band suppression of the slot-mode propagation is achievable. However, there is a significant impact on the propagation characteristics of the desired perturbed TE10 modes. Conversely, the suppression of the slot-mode radiation is achievable with minimal impact on the perturbed TE10 mode.
Citation
Source Title
Related items
Showing items related by title, author, creator and subject.
-
Sutinjo, Adrian; Okoniewski, M.; Johnston, R. (2009)Transverse perturbations in the form of periodic slots in the narrow-wall are employed to suppress the slot-mode radiation in a slitted waveguide. The presence of the perturbations alters the fast wave supported in an ...
-
Thyagarajan, N.; Jacobs, D.; Bowman, J.; Barry, N.; Beardsley, A.; Bernardi, G.; Briggs, F.; Cappallo, R.; Carroll, P.; Deshpande, A.; De Oliveira-Costa, A.; Dillon, J.; Ewall-Wice, A.; Feng, L.; Greenhill, L.; Hazelton, B.; Hernquist, L.; Hewitt, J.; Hurley-Walker, N.; Johnston-Hollitt, M.; Kaplan, D.; Kim, H.; Kittiwisit, P.; Lenc, E.; Line, J.; Loeb, A.; Lonsdale, C.; McKinley, B.; McWhirter, S.; Mitchell, D.; Morales, M.; Morgan, E.; Neben, A.; Oberoi, D.; Offringa, A.; Ord, S.; Paul, S.; Pindor, B.; Pober, J.; Prabu, T.; Procopio, P.; Riding, J.; Shankar, N.; Sethi, S.; Srivani, K.; Subrahmanyan, R.; Sullivan, I.; Tegmark, M.; Tingay, Steven; Trott, C.; Wayth, Randall; Webster, R.; Williams, A.; Williams, C.; Wyithe, J. (2015)We confirm our recent prediction of the "pitchfork" foreground signature in power spectra of high-redshift 21 cm measurements where the interferometer is sensitive to large-scale structure on all baselines. This is due ...
-
Wang, L.; Chin, K.; Soh, Sie Teng (2015)The capacity of wireless mesh networks (WMNs) can be improved significantly using multiple input multiple output (MIMO) technology. The Degree of Freedoms (DoFs) or antenna elements available at each node enable concurrent ...