Multipactor Threshold Comparative Study Between Groove Gap and RectangularWaveguide Technologies
I. Asensio, J. J. Vague, A. Coves, A.A. San Blas, M. Baquero-Escudero, V. E. Boria
XXXVII Simposium Nacional de la Unión Científica Internacional de Radio (URSI 2022)  (Málaga (España), 5-7 de septiembre de 2022)
 ISBN:978-84-09-44537-0

Resumen:


This paper presents a comparative study of the


different multipactor thresholds obtained in Rectangular Waveguide


(RW) and Groove Gap Waveguide (GGW) technologies.


Firstly, a technique developed by the authors has been used


to analyse theoretically the multipactor level in RWs. Results


have been compared with those from an available commercial


software, obtaining negligible differences. Second, by using an


accurate electron tracking code, the breakdown power levels in


the equivalent GGW have been predicted, showing a reduction


of the multipactor power threshold. Third, two aluminum WR-


90 symmetric E-plane RW transformers, one of them with the


central section in GGW technology, have been designed and


their multipactor breakdown power levels have been predicted


at five different frequencies. Finally, both transformers have been


manufactured and tested in an extensive multipactor campaign.


The measured results agree well with simulations, thereby fully


validating the obtained results.