A new approach to the design of dual-mode rectangular waveguide filters with distributed coupling
- 1 January 1997
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques
- Vol. 45 (2), 221-228
- https://doi.org/10.1109/22.557603
Abstract
A synthesis procedure for a new configuration of four-pole dual-mode waveguide filters with distributed coupling is presented, In this configuration the dual-mode coupling is obtained by exploiting the well-known fact that the diagonal polarizations are coupled in an almost square waveguide, The obvious advantage of this type of structure is that the cross sections of all the discontinuities are rectangular, hence the global prediction of the filter is more accurate, The synthesis approach is based on a scattering matrix formulation where the dual-mode coupling is described in terms of a 2 x 2 propagation matrix, Universal design charts, which directly yield the scattering parameters of the various junctions, have been obtained, Comparisons with experimental results of a four-pole filter are also presentedKeywords
This publication has 13 references indexed in Scilit:
- Efficient modal analysis of waveguide filters including the orthogonal mode coupling elements by an MM/FE methodIEEE Microwave and Guided Wave Letters, 1995
- Rectangular waveguide dual-mode filters without discontinuities inside the resonatorsIEEE Microwave and Guided Wave Letters, 1995
- Dual-mode dielectric or air-filled rectangular waveguide filtersIEEE Transactions on Microwave Theory and Techniques, 1994
- Analysis of thin inclined rectangular aperture with arbitrary location in rectangular waveguideIEEE Transactions on Microwave Theory and Techniques, 1993
- Dual-mode circular waveguide filters without tuning screwsIEEE Microwave and Guided Wave Letters, 1992
- A frequency-selective surface using aperture-coupled microstrip patchesIEEE Transactions on Antennas and Propagation, 1991
- Evanescent-mode coupling of dual-mode rectangular waveguide filtersIEEE Transactions on Microwave Theory and Techniques, 1991
- A History of Microwave Filter Research, Design, and DevelopmentIEEE Transactions on Microwave Theory and Techniques, 1984
- A Moment Solution for Waveguide Junction ProblemsIEEE Transactions on Microwave Theory and Techniques, 1983
- Narrow-Bandpass Waveguide FiltersIEEE Transactions on Microwave Theory and Techniques, 1972