Numerical Study of Eigenmodes Propagation Through Rectangular Waveguide with Quarter-Wave Chokes on the Walls

  • Alexander BrovkoEmail author
  • Guido Link
Conference paper
Part of the Studies in Systems, Decision and Control book series (SSDC, volume 199)


The problem of improvement of input/output ports construction of conveyor belt microwave heating system is considered. The desirable construction of the ports should not allow electromagnetic energy to escape from the microwave processing chamber, i.e. must operate as stop band filter for a number of eigenmodes. This paper contains numerical results illustrating performance of the quarter-wave chokes as a band-stop filter for large cross-section waveguide. The results were obtained by direct FDTD modeling of the system. Presented results show possibility of effective eigenmode filtering for waveguides with cross-section 780 × 100 mm. Limits of the approach may come from the requirements of small length of the filter (<1 m) and large height of waveguide.


Eigenmode Band-stop filter Quarter-wave choke FDTD 


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Yuri Gagarin State Technical University of SaratovSaratovRussia
  2. 2.Karlsruhe Institute of TechnologyEggenstein-LeopoldshafenGermany

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