Rigorous CAD of multiport coupled rectangular waveguide components

Hauth, Wolfgang; Keller, Reinhard; Papziner, U.; Ihmels, R.; Sieverding, T.; Arndt, F.

doi:10.1109/euma.1993.336644

Cited by 32 publications

(15 citation statements)

References 14 publications

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“…Furthermore, for two-port structures, the frequency dependency of the coupling integrals can be eliminated as is already well known [1], [3], [9], [37]. If the described efficiency features are utilized, a solid and fair comparison between the possible adequate generalized matrix combination techniques (GSM, GAM, GIM) reveals that, in general, the computational effort for this kind of application is nearly the same for all three techniques.…”

Section: A Mode-matching Key Building Blocks For Rectangular and Cirmentioning

confidence: 89%

“…The asymmetric step discontinuities already include the full information required for general multiport transitions or multiaperture irises (cf. [3]). Coupling section elements of finite lengths (e.g., irises or metal inserts) are combined by considering two junctions at once [9], where again, only one submatrix of reduced size has to be inverted (a similar technique has been recently described again [40]).…”

Section: A Mode-matching Key Building Blocks For Rectangular and Cirmentioning

confidence: 93%

“…The boundary condition for the electric field yields the system of linear equations (3) where the elements of the matrix are the coupling integrals of the field vectors of the cavity region. Due to the nonorthogonality of these field vectors at the boundary, this matrix is not diagonal.…”

Section: B Boundary Contour Mode-matching Methodsmentioning

confidence: 99%

“…Although the authors investigated the (modal) GAM or generalized impedance matrix (GIM) for the building blocks for comparison purposes as well (e.g., [3]), the GSM technique was preferred. As has already been mentioned, it has turned out (if all features of the most advanced mode-matching techniques (cf.…”

Section: E Generalized Scattering Matrix Combinationmentioning

confidence: 99%

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Automated design of waveguide components using hybrid mode-matching/numerical EM building-blocks in optimization-oriented CAD frameworks-state of the art and recent advances

Arndt

Beyer

Reiter

et al. 1997

IEEE Trans. Microwave Theory Techn.

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115

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Fast hybrid mode-matching/boundary-contour (MM/BC) and mode-matching/finite-element (MM/FE) waveguide building blocks are described for the optimization-oriented use in powerful circuit computer-aided design (CAD) tools and the automated design of waveguide components. The efficient electromagnetic (EM) CAD technique allows the accurate design of a comprehensive class of rectangular and circular waveguide components including realistic structures of higher complexity. The efficiency and flexibility of the hybrid CAD method is demonstrated at advanced EM design examples, such as broad-band circular-to-rectangular waveguide transitions including octagonal cross sections, waveguide resonator filters with rounded corners, optimum-shaped bends, dual-mode filterswith coupling sections without tuning screws, ridged waveguide filters with rounded corners, and multiplexers. The designed components are directly amenable to cost-efficient fabrication techniques like computer-controlled milling methods. The theory is verified by available measurements.

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Section: A Mode-matching Key Building Blocks For Rectangular and Cirmentioning

confidence: 89%

Section: A Mode-matching Key Building Blocks For Rectangular and Cirmentioning

confidence: 93%

Section: B Boundary Contour Mode-matching Methodsmentioning

confidence: 99%

Section: E Generalized Scattering Matrix Combinationmentioning

confidence: 99%

See 2 more Smart Citations

Automated design of waveguide components using hybrid mode-matching/numerical EM building-blocks in optimization-oriented CAD frameworks-state of the art and recent advances

Arndt

Beyer

Reiter

et al. 1997

IEEE Trans. Microwave Theory Techn.

Self Cite

115

View full text Add to dashboard Cite

show abstract

“…The GAM constitutes the matrix relation between the V and I coefficients at both ends of the waveguide length L. Using transmission line theory, by virtue of the orthogonality of the modal eigenfunctions, one easily obtains: (2) where Yg,, are diagonal submatrices of size M X M given by:…”

Section: The M M Methodsmentioning

confidence: 99%

A strategy for the efficient full-wave description of complex waveguide networks

Tarricone¹,

Dionigi²,

Sorrentino³

1996

Int. J. Microw. Mill.-Wave Comput.-Aided Eng.

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The mode‐matching analysis of rectangular waveguide networks requires a complex segmentation of the structure into simple elements. The way these elements are connected has a strong influence on the computing performance of the code. Moreover, for complex structures the size of the coefficient matrix of the main system can easily reach unaffordable dimensions, so that the use of an efficient solving strategy becomes indispensable. A new approach to the optimum automatic choice of the interconnections is presented, leading to a highly stable and outperforming method of analysis. A Butler 4 × 4 matrix, with six branch guide couplers and four phase shifters, containing 336 uniform waveguide sections and bifurcations, has been studied, and the presented strategy has allowed a performance increase up to two orders of magnitude. © 1996 John Wiley & Sons, Inc.

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Mode‐Matching Methods

Arndt¹

2005

Encyclopedia of RF and Microwave Engineering

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The article presents an overview of the state of the art of (mode) matching (MM) methods applied for the rigorous, fast CAD and optimization of waveguide components, and describes some recent advances. The great technical importance of the MM technique is its extremely high computational efficiency achieving complete full‐wave analyses of typical waveguide components several orders of magnitude faster than electromagnetics (EM)‐based methods applying space discretization techniques. Hence, the MM technique allows advantageously the direct EM‐based optimization of waveguide components toward given specifications within shortest response times. Adequate extensions of the MM technique, such as the boundary contour MM (BCMM) method or hybrid combinations with other EM methods such as the finite‐element method, allow extended flexibility. Typical application examples will illustrate the versatility of the MM methods.

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Rigorous CAD of multiport coupled rectangular waveguide components

Cited by 32 publications

References 14 publications

Automated design of waveguide components using hybrid mode-matching/numerical EM building-blocks in optimization-oriented CAD frameworks-state of the art and recent advances

Automated design of waveguide components using hybrid mode-matching/numerical EM building-blocks in optimization-oriented CAD frameworks-state of the art and recent advances

A strategy for the efficient full-wave description of complex waveguide networks

Mode‐Matching Methods

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