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Alibakhshikenari, Mohammad, Parand, Peiman, Zidour, Ali, Virdee, Bal Singh, Longhi, Patrick, See, Chan Hwang and Limiti, Ernesto (2025) 3rd order coupled-resonator bandpass filter assisted by Groove Gap-Waveguide technology for 26-GHz radio link diplexer. In: 2024 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE), 21-23 December 2024, Langkawi, Malaysia.
This paper investigates the design of a bandpass filter (BPF) intended for 26-GHz radio-link diplexer using Groove-Gap-Waveguide (GGW) technology. Its unit-cells consist of a rectangular metal-pin which is connected to a bottom metal plate and its other side is electromagnetically coupled to a top plate with an air-gap of approximately λ/4 that creates a bandgap, preventing unwanted electromagnetic-wave propagation. An array of these unit-cells forms a cavity resonator, allowing wave propagation over a specific conductive region. To achieve the desired passband response, a rectangular slot-channel is milled on the bottom metal plate, perturbing the cavity modes and creating the desired filter characteristics.
Available under License Creative Commons Attribution 4.0.
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