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Design of Frequency-Reconfigurable Branch-Line Crossover Using Rectangular Dielectric Channels

Abstrakt

This paper presents an efficient yet straightforward passive reconfiguration technique to tune the operating frequency of a branch-line crossover (BLCO). The underlying principle is to fill rectangular dielectric channels (RDCs) prepared beforehand with either air or materials of different relative permittivity. Two configurations (one RDC and three RDCs in each arm) of the branch-line crossover are employed to estimate the tunability range of the operating frequency. The introduction of RDCs packed with different materials in the branch lines modifies the effective permittivity of the dielectric medium, resulting in an alteration of the operating frequency. The size and the positions of the RDCs are optimized using full-wave electromagnetic simulations to achieve maximum tunability range while ensuring reasonable bandwidth. A lumped circuit model (LCM) is developed to analyze the working principle of the proposed technique. To validate computational models, two prototypes of the branch-line crossover are realized, fabricated, and experimentally demonstrated. The first BLCO packed with seven RDCs exhibits a frequency tuning range of 15.8%, whereas the second prototype filled with twenty-one RDCs features a tuning range of 36.9%.

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Wersja publikacji
Accepted albo Published Version
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1109/ACCESS.2023.3267486
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Creative Commons: CC-BY-NC-ND otwiera się w nowej karcie

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Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
IEEE Access nr 11, strony 38072 - 38081,
ISSN: 2169-3536
Język:
angielski
Rok wydania:
2023
Opis bibliograficzny:
Barik R. K., Kozieł S., Bernhardsson E.: Design of Frequency-Reconfigurable Branch-Line Crossover Using Rectangular Dielectric Channels// IEEE Access -Vol. 11, (2023), s.38072-38081
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1109/access.2023.3267486
Źródła finansowania:
  • COST_FREE
Weryfikacja:
Politechnika Gdańska

wyświetlono 34 razy

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