CAD of T-septum waveguide evanescent-mode filters

Labay, Vladimir A.; Børnemann, Jens

doi:10.1109/22.231675

Cited by 18 publications

(11 citation statements)

References 9 publications

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“…Refs. 7–9. Two such designs are presented for 9.5 GHz applications, one in square and one in circular waveguide technology [10].…”

Section: Introductionmentioning

confidence: 99%

Polarization‐preserving evanescent‐mode filters

Børnemann

2011

Micro & Optical Tech Letters

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Rectangular and circular waveguide evanescent‐mode filters with polarization‐preserving properties are presented. The filters are formed by inserting quadruple‐ridged resonators in a square or circular waveguide operated below cutoff. They are especially suited in applications requiring short and compact components. The numerical technique that facilitates eigenvalue and scattering parameter computations is verified against measurements. Basic design considerations are discussed, and structural dimensions are provided for two 9.5 GHz filters with 500 MHz bandwidth. Performances are validated by independent and commercially available electromagnetic software packages. Sensitivity issues for fabrication are addressed by a tolerance analysis. Fabrication accuracy is acceptable for operation in dual vertical and horizontal polarizations but is considerably more stringent for circularly polarized applications. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1435–1439, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26016

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“…Refs. 7–9. Two such designs are presented for 9.5 GHz applications, one in square and one in circular waveguide technology [10].…”

Section: Introductionmentioning

confidence: 99%

Polarization‐preserving evanescent‐mode filters

Børnemann

2011

Micro & Optical Tech Letters

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“…In particular, RTSW is used as a basic unit of filters [1] and microwave heating applicators [2,3]. Several EM parameters, such as the cutoff wavelengths of the two lowest modes, broad band, impedance, attenuation, and power-handling capability of hollow RTSW have been studied in [4 -6].…”

Section: Introductionmentioning

confidence: 99%

“…Bandwidth characteristics, dispersion curves, and fields patterns of the lowest mode of partially loaded RTSW have been analyzed numerically for the two cases of lossy and lossless dielectric filling in [7][8][9]. Various numerical approaches, including the mode-matching method [1], the Ritz--Galerkin method [4 -6], conservation of complex power technique [7], the finite-element method (FEM) [8,9] and so forth are normally used for RTSW parameters modeling.…”

Section: Introductionmentioning

confidence: 99%

Peculiarities of dominant mode transformation in rectangular T-septum waveguide with inhomogeneous dielectric loading

Комаров

Kolomeytsev

2004

Int J RF and Microwave Comp Aid Eng

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A combined 2D numerical-analytical algorithm for electromagnetic (EM) fields computation in one-counter waveguides with arbitrary cross section is proposed. The developed algorithm is employed to investigate the influence of the normalized propagation constant and dielectric loading on the field distribution in a rectangular T-septum waveguide with an E-plane dielectric insert. Dominant-mode varieties of a given transmission line are represented.

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“…With the demonstrated capability of T-septum waveguide technology towards smaller components and broadband performance, for example, in [11][12][13][14], a certain demand for rectangular-to-T-septum waveguide transformers exists. The only transformer designed thus far [14] exclusively uses T-septum transformer sections, which complicates the fabrication process due to varying septa dimensions between the individual transformer stages.…”

Section: Introductionmentioning

confidence: 99%

Broadband rectangular‐to‐ridge‐to‐T‐septum waveguide transformers

Labay

Børnemann

2004

Micro & Optical Tech Letters

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Broadband transformers from rectangular to T‐septum waveguides are presented. By utilizing both ridge and T‐septum waveguide sections in the transformer design, the thicknesses of the ridge and the T‐septa can be kept constant, which simplifies fabrication. The three‐ and four‐section designs achieve relative bandwidths of 57% and 72%, respectively. Both designs are verified through computations with commercially available field solver software. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 43: 183–185, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20414

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CAD of T-septum waveguide evanescent-mode filters

Cited by 18 publications

References 9 publications

Polarization‐preserving evanescent‐mode filters

Polarization‐preserving evanescent‐mode filters

Peculiarities of dominant mode transformation in rectangular T-septum waveguide with inhomogeneous dielectric loading

Broadband rectangular‐to‐ridge‐to‐T‐septum waveguide transformers

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