Field Theory Analysis and Numerical Synthesis of Symmetrical Multiple-branch Waveguide Couplers

Arndt, F.; Ellermann, Dieter; Häusler, Hans Walter; Strube, J.

doi:10.1515/freq.1982.36.10.262

Cited by 19 publications

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References 5 publications

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“…In contrast to waveguide technology, where design tools based on a field theoretical approach for multiple branch waveguide directional couplers are well known [1], a design theory for branch TEM-line directional couplers (branch line couplers), Fig. la, has not been reported.…”

Section: * Mbb -Space Communication and Propulsion Münchenmentioning

confidence: 99%

Accurate Analysis Method for Rectangular-Coaxial Line Components

Chang¹

1989

Frequenz

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4] Spann, R.: A two-dimensional correlation property of pseudorandom maximal length sequences. Proc. IEEE, VoL S3 (1965) p. 2137. [51 Fenimore, E.E.; Cannon, T.M.: Coded aperture imaging with uniformly redundant arrays. Applied Optics, VoL 17 (1978) pp. 337-347. [6] Sckraeder, M.R.: Diffuse sound reflection by maximum-fength sequences. J. Aconst Soc. Am, VoL 57 (1975) pp. 149-150. [7] Goby, M.J.E.: The meritfactor of long low autocorrelation binary sequences. IEEE Trans. Inform. Theory, VoL IT-28 (1982) pp. 543-549. [8] Mac Williams, F. J.; Sloane. N. J. A.: Pseudo-random sequences and arrays. Proc. IEEE, VoL 64 (1976) pp. 1715-1729. [9] Antweiler, M.; Bömer, L.; Luke, H.D.: Perfect Ternary Arrays. Proposed for publication in IEEE Trans. Inform. Theory. [10] Luke, H. D.: Sequences and arrays with perfect periodic correlation. IEEE Trans. Aerosp. Electron. Syst., VoL AES-24 (1988) pp. 287-294. [11] Calabro, D.; Wolf, J.K.: On the synthesis of two-dimensional arrays »im desirable correlation properties. Inform. Contr, VoL 11 (1968) pp. 537-560. [12] Chan, Y.K.; Sin, M.K.; Tong. P.: Two-dimensional binar) arrays with good autocorrelation. Inform, a. Contr., VoL 42 (1979) pp. 125-130. [13] Bömer. L.; Antweikr, M.: Perfect binary arrays with 36 elements. Electron. Lett, VoL 23 (1987) pp. 730-732. [14] Bömer, L.; Antweiler, M.: Two-dimensional perfect binary arrays with 64 dements. Accepted for publication in IEEE Trans. Information Theory. [15] Wild. P.: Infinite families of perfect binary arrays. Electron. Lett, VoL 24 (1988) pp. 845-847. [16] Jedwab, J.; Mitchell, C: Construction new perfect binary arrays. Electron. Lett, VoL 24 (1988) pp. 650-652. [17] Luke, H.D.; Bömer, L.: Perfect binary arrays. To be published in: Signal Processing, VoL 16 (1989). [18] Bamnen, L.D.: Cyclic difference sets. Berlin: Springer Verlag, 1971. [19] Kopiknich, L. E.: On perfect binary arrays. Electron. Lett, VoL 24 (1988) pp. [20] [21] Lemple, A'.; Cohn, M.; Eastman, W.L.: A class of balanced binary quences with optimal autocorrelation properties. IEEE Trans. Abstract:The eigenfunction expansion method is used to solve the field problem of rectangular-coaxial lines and step discontinuities. The programme package developed has been applied to design several TEM-branchline couplers. The performance measured coincides well with the theoretical predictions. Übersicht:Orthpgonalentwicklung nach Eigenfunktion wird zur Lösung der Randwertprobleme in rechteckkoaxialen Leitungen und Strukturen mit sprunghafter Breitenänderung angewandt. Entsprechende Programme sind getestet und erfolgreich zum Entwurf von mehreren TEM-Branch-Line-Kopplern eingesetzt worden. Die gemessenen Kopplercharakteristiken stimmen gut mit den theoretischen Voraussagen überein. Für die Dokumentation :Orthogonalentwicklung / rechteck-koaxiale Leitung / TEM-Leitung / Leitungsdiskontinuität/ TEM-Branch-Line-Koppler / Filter

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Section: * Mbb -Space Communication and Propulsion Münchenmentioning

confidence: 99%

Accurate Analysis Method for Rectangular-Coaxial Line Components

Chang¹

1989

Frequenz

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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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HybridCADTechniques

Arndt

2005

Encyclopedia of RF and Microwave Engineering

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Microwave components/systems that meet the tight requirements of advanced applications—in particular concerning reduced mass and size, increased specs and performance, minimized design time, and cost—demand fast EM‐based CAD tools yielding accurate, optimized designs within adequately short response times. This goal makes flexible hybrid solutions desirable, which typically go beyond the efficiency possibilities of single methods. The article presents an overview of the state of the art of hybrid CAD mode‐matching (MM)/finite‐element (FE)/method‐of‐moments (MoM)/finite‐difference (FD) techniques applied for the rigorous, fast CAD and optimization of waveguide components and aperture antennas, and describes some more recent advances. The hybrid techniques presented combine advantageously the efficiency of the MM method with the flexibility of FE, MoM, and FD methods. Typical application examples illustrate the versatility of these techniques; the accuracy is demonstrated by comparisons with available measurements.

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Field Theory Analysis and Numerical Synthesis of Symmetrical Multiple-branch Waveguide Couplers

Cited by 19 publications

References 5 publications

Accurate Analysis Method for Rectangular-Coaxial Line Components

Accurate Analysis Method for Rectangular-Coaxial Line Components

Mode‐Matching Methods

HybridCADTechniques

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