Vague Cardona, José JoaquínAsensio, IreneCoves, ÁngelaSan Blas, Ángel A.Reglero Mangada, Marta SofíaVidal Pantaleoni, AnaRaboso, DavidBaquero Escudero, MarianoBoria Esbert, Vicente Enrique2023-10-302023-10-302022-050018-9480https://riunet.upv.es/handle/10251/199006[EN] This article presents a theoretical and experimental comparative study of the different multipactor threshold values obtained in the rectangular waveguide (RW) and the groove gap waveguide (GGW). To this end, the multipactor effect has been first analyzed in an RW with a recently developed theoretical model. Then, the multipactor breakdown power levels in the equivalent GGW have been predicted with an accurate electron tracking code, showing a significant increment compared with the RW case. In order to validate these results, two E-plane WR-90 RW transformers have been designed with a full-wave electromagnetic simulation tool. The central sections of these transformers have been implemented in RW and GGW, respectively, and their multipactor breakdown power levels have also been predicted. The two designed transformers have been fabricated in aluminum and then measured in terms of electrical response (scattering parameters) and RF multipactor effect (power threshold values). All the experimental results agree well with the set of simulated data, thus fully validating the performed study.Reserva de todos los derechosStandardsElectromagnetic waveguidesPins,TransformersSoftware toolsRectangular waveguidesRadio frequencyGroove gap waveguide (GGW)Multipactor effect,rectangular waveguideRF breakdownWaveguide transformerTEORÍA DE LA SEÑAL Y COMUNICACIONESArtículo10.1109/TMTT.2022.3157587Abierto