Rok 2024

• Low-Cost Method for Internal Surface Roughness Reduction of Additively Manufactured All-Metal Waveguide Components

  Publikacja

  • J. Sorocki
  • I. Piekarz
  • M. Baranowski
  • A. Lamęcki
  • A. Cattenone
  • S. Marconi
  • G. Alaimo
  • N. Delmonte
  • L. Silvestri
  • B. Maurizio

  - IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES - Rok 2024

  In this study, a novel low-cost polishing method for internal surface roughness reduction of additively manufactured components, developed for waveguide (WG) circuits operating in the millimeter frequency range is proposed. WG components fabricated using powder bed fusion (PBF) generally feature roughness of ten to fifty microns, which influences the increase of roughness-related conductor power losses having a major effect on...

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• Low-Loss 3D-Printed Waveguide Filters Based on Deformed Dual-Mode Cavity Resonators

  Publikacja

  • M. Baranowski
  • Ł. Balewski
  • A. Lamęcki
  • M. Mrozowski

  - IEEE Access - Rok 2024

  This paper introduces a new type of waveguide filter with smooth profile, based on specially designed dual-mode (DM) cavity resonators. The DM cavity design is achieved by applying a shape deformation scheme. The coupling between the two orthogonal cavity modes is implemented by breaking the symmetry of the structure, thus eliminating the need for additional coupling elements. The modes operating in the cavity are carefully analyzed...

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Rok 2023

• Rectangular Waveguide Filters Based on Deformed Dual-Mode Cavity Resonators

  Publikacja

  • M. Baranowski
  • Ł. Balewski
  • A. Lamęcki
  • M. Mrozowski

  - Rok 2023

  In this paper, a novel design for rectangular waveguide filters with deformed dual-mode (DM) cavity resonators is demonstrated. The new resonant cavity shape is a result of applying shape deformation to the basic rectangular cavity to enable its dual-mode operation. Internal coupling between the two orthogonal cavity modes is realized by geometry deformation, eliminating the need for additional coupling elements. The designs are...

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• The Design of Cavity Resonators and Microwave Filters Applying Shape Deformation Techniques

  Publikacja

  • M. Baranowski
  • Ł. Balewski
  • A. Lamęcki
  • M. Mrozowski
  • J. Galdeano

  - IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES - Rok 2023

  This article introduces shape deformation as a new approach to the computer-aided design (CAD) of high-frequency components. We show that geometry deformation opens up new design possibilities and offers additional degrees of freedom in the 3-D modeling of microwave structures. Such design flexibility is highly desirable if the full potential of additive manufacturing (AM) is to be exploited in the fabrication of RF and microwave...

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Rok 2022

• A Circular Waveguide Dual-Mode Filter With Improved Out-of-Band Performance for Satellite Communication Systems

  Publikacja

  • M. Baranowski
  • Ł. Balewski
  • A. Lamęcki
  • M. Mrozowski
  • J. Galdeano

  - IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS - Rok 2022

  This letter presents a novel design for a 3-D-printed circular waveguide dual-mode (CWDM) filter with a modified cavity shape. The modification leads to a wide spurious-free stopband, which is highly desirable for channel separation in waveguide contiguous output multiplexers (OMUXs) in satellite communication systems. The new resonant cavity design is a result of applying shape deformation to a basic circular cavity in order to...

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• Fast Design Optimization of Waveguide Filters Applying Shape Deformation Techniques

  Publikacja

  • M. Baranowski
  • Ł. Balewski
  • A. Lamęcki
  • M. Mrozowski

  - Rok 2022

  This paper presents an efficient design of microwave filters by means of geometry optimization using shape deformation techniques. This design procedure allows for modelling complex 3D geometries which can be fabricated by additive manufacturing (AM). Shape deforming operations are based on radial basis function (RBF) interpolation and are integrated into an electromagnetic field simulator based on the 3D finiteelement method (FEM)....

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