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The Scientific World Journal
Volume 2013, Article ID 682707, 6 pages
Research Article

Substrate Integrated Waveguide Cross-Coupling Filter with Multilayer Hexagonal Cavity

Research Institute of Electronic Science and Technology, University of Electronic Science and Technology of China, Chengdu 611731, China

Received 27 August 2013; Accepted 12 October 2013

Academic Editors: J. Charrier, V. Laude, V. M. N. Passaro, and J.-K. Xiao

Copyright © 2013 B. Wu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Hexagonal cavities and their applications to multilayer substrate integrated waveguide (SIW) filters are presented. The hexagonal SIW cavity which can combine flexibility of rectangular one and performance of circular one is convenient for bandpass filter’s design. Three types of experimental configuration with the same central frequency of 10 GHz and bandwidth of 6%, including three-order and four-order cross-coupling topologies, are constructed and fabricated based on low temperature cofired ceramic (LTCC) technology. Both theoretical and experimental results are presented.