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Efficient analysis of cubic junction of rectangular waveguides using admittance-matrix representation

Efficient analysis of cubic junction of rectangular waveguides using admittance-matrix representation

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  • Author(s): V.E. Boria 1 ; S. Cogollos 1 ; H. Esteban 1 ; M. Guglielmi 2 ; B. Gimeno 3
    • View affiliations
    • Affiliations: 1: Departamento de Comunicaciones, Universidad Politécnica de Valencia, Valencia, Spain
      2: Departamento de Comunicaciones, European Space Research and Technology Centre (ESTEC), AG Noordwijk, The Netherlands
      3: Departamento de Física Aplicada — ICMUV, Universidad de Valencia, Burjasot (Valencia), Spain
  • Source: Volume 147, Issue 6, December 2000, p. 417 – 422
    DOI:  10.1049/ip-map:20000828 , Print ISSN 1350-2417, Online ISSN 1359-706X
© IEE
Published

In the paper an efficient and accurate method, based on the multimode-admittance-matrix representation and the theory of cavities, is proposed for the analysis of a six-port ‘cubic’ junction composed of the orthogonal intersection of three rectangular waveguides. Very simple closed-form analytical expressions are explicitly detailed for all matrix elements of this basic key building block. More general waveguide multiport junctions, composed of a central cubic junction with arbitrarily shaped waveguide access ports, are also studied using a segmentation procedure. To validate the theory, numerical results are first discussed for a standard rectangular waveguide six-port cross junction. Finally, the analysis method proposed is also successfully applied to H- and E-plane T-junctions whose side arms are waveguides with rounded corners.

Inspec keywords: matrix algebra; rectangular waveguides; electric admittance; waveguide theory; waveguide junctions

Other keywords: H-plane T-junctions; multimode-admittance-matrix representation; waveguide multiport junctions; closed-form analytical expressions; six-port junction; shaped waveguide access ports; central cubic junction; numerical results; cavity theory; segmentation procedure; E-plane T-junctions; six-port cross junction; cubic junction; rectangular waveguides

Subjects: Waveguide and microwave transmission line components; Waveguides and microwave transmission lines; Waveguide and cavity theory

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