Wideband modelling of cascaded H-plane waveguide junctions using the generalised impedance matrix representation

A strong interest in H-plane waveguide components composed of a large number of cascaded planar junctions is recently renewed. Therefore, the more efficient development of full-wave analysis tools of such devices is again receiving consideration, specially for its potential use within modern design tools. A novel technique for providing the wideband generalised impedance matrix representation of the inductive devices in the form of pole expansions, thus extracting the most expensive computations from the frequency loop is proposed. For such purpose, the whole device is first decomposed into simpler building blocks, i.e. planar junctions and uniform waveguides, which are modelled in terms of the proposed wideband matrices. Then, a novel iterative algorithm for the efficient combination of such matrices is followed. The complete technique has been successfully applied to the full-wave analysis of several inductive waveguide filters of great practical interest.

[1]  S. B. Cohn,et al.  A History of Microwave Filter Research, Design, and Development , 1984 .

[2]  E. I. Lavretski,et al.  Efficient method for design and analysis of rectangular waveguide band-pass filters with multiple inductive circular posts , 2005 .

[3]  Ke-Li Wu,et al.  A full-wave modal analysis of arbitrarily shaped waveguide discontinuities using the finite plane-wave series expansion , 1999 .

[4]  Vicente E. Boria,et al.  A new hybrid mode-matching/numerical method for the analysis of arbitrarily shaped inductive obstacles and discontinuities in rectangular waveguides , 2002 .

[5]  F. Montauti,et al.  Implementing transmission zeros in inductive-window bandpass filters , 1995 .

[6]  Alejandro Álvarez Melcón,et al.  New simple procedure for the computation of the multimode admittance or impedance matrix of planar waveguide junctions , 1996 .

[7]  Tatsuo Itoh,et al.  Recent advances in numerical methods for microwave and millimeter-wave passive structures , 1989 .

[8]  T. Itoh.  Numerical techniques for microwave and millimeter-wave passive structures , 1989 .

[9]  Marco Guglielmi,et al.  Simple CAD procedure for microwave filters and multiplexers , 1994 .

[10]  J. M. Reiter,et al.  Rigorous analysis of arbitrarily shaped H- and E-plane discontinuities in rectangular waveguides by a full-wave boundary contour mode-matching method , 1995 .

[11]  Tatsuo Itoh,et al.  E-Plane Filters with Finite-Thickness SEPTA , 1983 .

[12]  Roberto Sorrentino,et al.  Numerical methods for passive microwave and millimeter wave structures , 1989 .

[13]  M. Ferrando,et al.  Full-wave equivalent network representation for multiple arbitrarily shaped posts in H-plane waveguide , 1999 .

[14]  Roberto Sorrentino,et al.  Advanced Modal Analysis: CAD Techniques for Waveguide Components and Filter , 1999 .

[15]  M. Guglielmi,et al.  A new family of all-inductive dual-mode filters , 2001 .

[16]  Ralf Beyer,et al.  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 , 1997 .

[17]  Tullio Rozzi,et al.  Accurate full-band equivalent circuits of inductive posts in rectangular waveguide , 1992 .

[18]  Luca Perregrini,et al.  Wideband modeling of arbitrarily shaped E-plane waveguide components by the "boundary integral-resonant mode expansion method" , 1996 .

[19]  G. Pelosi,et al.  Rigorous multimode network numerical representation of inductive step , 1994 .

[20]  Comparative study of two integral-equation formulations for inductive irises in rectangular waveguides , 1996 .

[21]  F.D.Q. Pereira,et al.  Efficient Analysis of Arbitrarily Shaped Inductive Obstacles in Rectangular Waveguides Using a Surface Integral-Equation Formulation , 2007, IEEE Transactions on Microwave Theory and Techniques.

[22]  Rozzi,et al.  Wide-Band Network Modeling of Interacting Inductive Irises and Steps , 1975 .

[23]  B. Gimeno,et al.  Waveguide filters for satellites , 2007, IEEE Microwave Magazine.

[24]  R.R. Mansour,et al.  An Improved Transmission Matrix Formulation of Cascaded Discontinuities and its Application to E-Plane Circuits , 1986, 1986 IEEE MTT-S International Microwave Symposium Digest.

[25]  Y. Shih.  Design of Waveguide E-Plane Filters with All-Metal Inserts , 1984 .

[26]  Marco Guglielmi,et al.  Rigorous , Multimode Equivalent Network Representation of Capacitive Discontinuities , 2008 .

[27]  Paolo Arcioni,et al.  Combination of generalized admittance matrices in the form of pole expansions , 1999 .

[28]  J. Uher,et al.  Waveguide Components for Antenna Feed Systems: Theory and CAD , 1993 .