A new rigorous method for the determination of iris dimensions in dual-mode cavity filters

Couffignal, P.; Baudrand, H.; Théron, B.

doi:10.1109/22.299724

Cited by 13 publications

(17 citation statements)

References 28 publications

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“…The gain in efficiency due to the new approach has been successfully measured by comparing our results with those provided by a classical eigenvalue solver included in the LAPACK software [8]. Finally, the new CAD tool has been successfully applied to the full-wave design of a dual-mode filter in circular waveguide technology with elliptical irises, which is a typical passive component present in most satellite payloads [9][10][11].…”

Section: Introductionmentioning

confidence: 90%

Efficient and accurate waveguide mode computation using BI-RME and Lanczos methods

García

Boria

Vidal

2006

Int. J. Numer. Meth. Engng

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SUMMARYIn this paper, a special purpose algorithm for solving large eigenvalue problems based on the Lanczos method is successfully applied to an engineering problem: the electromagnetic analysis and design of passive waveguide devices. For dealing with such complex problems, the boundary integral-resonant mode expansion (BI-RME) technique has been recently proposed. This technique solves integral equations (IEs) through the well-known method of moments (MoM), thus leading to structured eigenvalue problems. These problems frequently become very large when solving complex arbitrary geometries with high accuracy. In such cases, the eigenvalue problem cannot be efficiently solved with standard methods by means of personal computers, essentially due to CPU time and memory allocation requirements. In this paper, we propose an alternative technique, based on the Lanczos method, for the fast and accurate solution of large BI-RME generalized eigenvalue problems. The novel theoretical aspects of this approach, as well as the impact on the original BI-RME formulation, are described. Comparative benchmarks are also successfully presented for the full-wave analysis and design of real passive microwave devices.

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Section: Introductionmentioning

confidence: 90%

Efficient and accurate waveguide mode computation using BI-RME and Lanczos methods

García

Boria

Vidal

2006

Int. J. Numer. Meth. Engng

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“…(8) D1 and D2 are diagonal matrices with imaginary elements. Therefore, the right-hand sides of (7) may be put into single summation form.…”

Section: D1 = Y 2 ( I + L2)(l2 -I ) -' Dzmentioning

confidence: 99%

An improved modal expansion method for two cascaded junctions and its application to waveguide filters

Shen

MacPhie

1995

IEEE Trans. Microwave Theory Techn.

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An improved modal expansion method is described for the scattering matrix of a cascaded network which consists of an enlargement junction combined with a reduction junction. The new method can significantly reduce computation time and requirement of computer memory. Application to iris coupled waveguide cavity filters is demonstrated. Numerical results for a rectangular waveguide cavity filter are given.

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“…For instance, ridged rectangular [1] and ridged circular [2] waveguides, as well as cross-shaped irises [3] are frequently found in dual-mode empty or dielectric-loaded resonator filters. Multiridged rectangular waveguides have been also employed as tuning elements in reentrant coaxial filters [4], as well as key elements in doubly corrugated chokes [5].…”

Section: Introductionmentioning

confidence: 99%

Efficient modal analysis of arbitrarily shaped waveguides composed of linear, circular, and elliptical arcs using the BI-RME method

Cogollos

Marini

Boria

et al. 2003

IEEE Trans. Microwave Theory Techn.

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Abstract-This paper deals with the accurate and efficient modal analysis of arbitrarily shaped waveguides whose cross section is defined by a combination of straight, circular, and/or elliptical arcs. A novel technique for considering the presence of circular and/or elliptical segments within the frame of the well-known boundary integral-resonant mode expansion (BI-RME) method is proposed. This new extended BI-RME method will allow a more accurate solution of a wider number of hollow conducting waveguides with arbitrary profiles, which are usually present in most modern passive waveguide components. To show the advantages of this new extended technique, the modal chart of canonical (circular and elliptical) waveguides, as well as of irises with great practical interest (i.e., cross-shaped irises with rounded corners) has been first successfully solved. Next, a computer-aided-design software package based on such a novel modal analysis tool has first been validated with the accurate analysis of a referenced complex dual-mode filter, and then applied to the complete design of a novel twist component for -band application based on circular and elliptical waveguides. A prototype of this novel device has been manufactured and measured for verification purposes.

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A new rigorous method for the determination of iris dimensions in dual-mode cavity filters

Cited by 13 publications

References 28 publications

Efficient and accurate waveguide mode computation using BI-RME and Lanczos methods

Efficient and accurate waveguide mode computation using BI-RME and Lanczos methods

An improved modal expansion method for two cascaded junctions and its application to waveguide filters

Efficient modal analysis of arbitrarily shaped waveguides composed of linear, circular, and elliptical arcs using the BI-RME method

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