Bandpass THz frequency selective surface with flat passband

• Autorzy: Hussein Muaad , Alrudainy Haider , Abdulkawi Wazie M.

Identyfikatory

DOI

10.15199/48.2022.08.14

Warianty tytułu

PL

Powierzchnia selektywna pasma przepustowego THz z płaskim pasmem przepustowym

• Języki publikacji: EN

Abstrakty

EN

The thickness of the substrate turns out to be approximately a quarter of a wavelength in implementing second-order passband frequency selective surfaces (FSSs) to achieve better response with faster roll-off and smooth in-band frequency response. The problem with using a thicker substrate in FSS structures is that the losses will be high, especially in millimeter and terahertz (THz) frequency applications. For that, a new approach is introduced in this paper to deal with this issue. The approach is to adopt an improvement of the coupling coefficient without increasing the thickness of the substrate. Based on this, a thin band-pass filter (FSS) with low losses and flat-top response is built. An equivalent circuit model has been provided to characterize the structure based on electric and magnetic fields distributions. Thus, it is proven in this paper that the calculated results are in good agreement with the numerical simulation results.

PL

Okazuje się, że grubość podłoża wynosi około jednej czwartej długości fali w implementacji powierzchni selektywnych częstotliwościowo pasma przepustowego (FSS) drugiego rzędu, aby uzyskać lepszą odpowiedź z szybszym wycofywaniem się i gładką odpowiedzią częstotliwościową w paśmie. Problem z użyciem grubszego podłoża w strukturach FSS polega na tym, że straty będą wysokie, szczególnie w zastosowaniach o częstotliwościach milimetrowych i terahercowych (THz). W tym celu w niniejszym opracowaniu wprowadzono nowe podejście do rozwiązania tego problemu. Podejście polega na przyjęciu poprawy współczynnika sprzężenia bez zwiększania grubości podłoża. Na tej podstawie budowany jest cienki filtr pasmowoprzepustowy (FSS) o niskich stratach i płaskiej odpowiedzi. Dostarczono równoważny model obwodu w celu scharakteryzowania struktury w oparciu o rozkłady pól elektrycznych i magnetycznych. Tym samym dowiedziono w niniejszej pracy, że obliczone wyniki są w dobrej zgodności z wynikami symulacji numerycznej.

Słowa kluczowe

EN

THz; FSS; filter; flat passband

PL

powierzchnia selektywna; pasmo THz; pasmo przepustowe; FSS

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2022
• Tom: R. 98, nr 8
• Strony: 73--76
• Opis fizyczny: Bibliogr. 25 poz., rys.

Twórcy

autor

Hussein Muaad

• Southern Technical University, Iraq, Basra, Str. Zubayr

• https://orcid.org/0000-0003-0612-4322

autor

Alrudainy Haider

• Southern Technical University, Iraq, Basra, Str. Zubayr

autor

Abdulkawi Wazie M.

• King Saud University, Saudi Arabia, Riyadh 11421

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).