A novel low-pass filter based on dielectric impedance inverters to enhance the multipactor breakdown threshold
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Romera Pérez, Antonio; Pons Abenza, Alejandro; Quesada Pereira, Fernando Daniel; Hinojosa Jiménez, Juan; Álvarez Melcón , Alejandro; [et al.]Área de conocimiento
Ingeniería EléctricaTeoría de la Señal y las ComunicacionesPatrocinadores
This research work has been financially supported by the Spanish Ministerio de Ciencia e Innovación in the frame of the project “Green an Efficient Technologies for Advanced Telecommunication Systems (GRETAS)” with Ref. TPID2019-103982RB-C42.Realizado en/con
Universidad Politécnica de Cartagena; Universidad de Alcalá; Universidad de CaliforniaFecha de publicación
2021-11-17Editorial
ElsevierCita bibliográfica
Antonio Romera Perez, Alejandro Pons Abenza, Fernando D. Quesada Pereira, Juan Hinojosa Jimenez, Alejandro Alvarez Melcon, Juan Sebastian Gomez Diaz, A novel low-pass filter based on dielectric impedance inverters to enhance the multipactor breakdown threshold, AEU - International Journal of Electronics and Communications, Volume 143, 2022, 154040, ISSN 1434-8411, https://doi.org/10.1016/j.aeue.2021.154040.Revisión por pares
SIPalabras clave
Waveguide low-pass filterMicrowave filters
Multipactor breakdown
Dielectric filter
Resumen
This work presents a novel low-pass filter based on using dielectric materials, in the critical areas of the structure, to prevent high-power space condition adverse effects, like multipactor breakdown. It is shown that the use of dielectric pieces in the inverters of the filter leads to increased gaps between metallic parts in the irises. In addition, by completely filling up the air space in critical gaps, the multipactor breakdown thresholds can be increased. Moreover, they also lead to a volume reduction, increasing compactness of the structure. To demonstrate the proposed concept, a prototype has been manufactured with an aluminum housing and a Teflon dielectric material, and tested for multipactor effect at ESA-VSC Laboratory. Tests confirmed that the manufactured filter has good electrical performance with cut-off frequency 13.6 GHz, insertion losses 0.32 dB, return losses better than 15 dB, and additionally does not show multipactor breakdown up to the maximum power tested in the ...
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