Multipactor RF Breakdown in Coaxial Transmission Lines With Digitally Modulated Signals

Gonzalez-Iglesias, D.; Monerris, Oscar; Martínez, Benito Gimeno; Díaz, María Elena; Boria, Vicente E.; Martín-Iglesias, Petronilo

doi:10.1109/ted.2016.2596801

Cited by 17 publications

(8 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some years ago, the first multipactor susceptibility charts were obtained for parallel-plate waveguides using analytical models [4] and empirical data [5]. More recently, the multipactor effect has been studied in a wider variety of waveguides and transmission lines, such as rectangular [6]- [8], circular [9], elliptical [10], ridge [11], and coaxial waveguides [12], [13], as well as planar microstrip lines [14].…”

Section: Introductionmentioning

confidence: 99%

Study of the Multipactor Effect in Groove Gap Waveguide Technology

Vague¹,

Asensio²,

Coves

et al. 2022

IEEE Trans. Microwave Theory Techn.

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

Study of the Multipactor Effect in Groove Gap Waveguide Technology

Vague¹,

Asensio²,

Coves

et al. 2022

IEEE Trans. Microwave Theory Techn.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Among these negative effects, it is worth mentioning the degradation of the component, detuning of resonant cavities, power dissipation, and a significant increase of noise in communications. Multipactor has been deeply investigated in several types of microwave waveguides with simple geometries, such as parallel-plate [1], rectangular [2]- [4], circular [5], elliptical [6], and coaxial waveguides [7], [8]. However, there are few contributions to the study of the multipactor effect in partially dielectric-loaded waveguides in the scenario of RF systems for space applications [9]- [12], and most of them use the parallel-plate waveguide approach.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Multipactor Effect in a Partially Dielectric-Loaded Rectangular Waveguide

Berenguer

Coves

Gimeno

et al. 2019

IEEE Microw. Wireless Compon. Lett.

Self Cite

View full text Add to dashboard Cite

This letter presents the experimental study of the multipactor threshold in a partially dielectric-loaded rectangular waveguide, whose results validate a multipactor model recently developed by the authors, which includes the charge distribution appearing on the dielectric surface during the multipactor discharge. First, the variation of the multipactor RF voltage threshold has been theoretically analyzed in different waveguide configurations: in an empty waveguide, and also in the cases of a one-sided and two-sided dielectric-loaded waveguides. To reach this aim, an in-house Monte-Carlo simulation tool has been developed. The Secondary Electron Yield (SEY) of the metallic and dielectric materials used in the numerical simulations have been measured experimentally. Finally, an aluminum WR-75 symmetric E-plane rectangular waveguide transformer has been designed and fabricated, in which several multipaction tests have been carried out to validate the in-house software tool, demonstrating an excellent agreement between the simulation results and the experimental data.

show abstract

“…Multipactor can cause increased losses and/or RF signal distortion, and even physical damages [15], [16]. Most researches have studied the multipactor problem using the classic parallel plate configuration, firstly proposed in [17] and widely used later in multipactor research [13], [18], [19] and industry standards [20], [21].…”

mentioning

confidence: 99%

Multipactor Effect Characterization of Dielectric Materials for Space Applications

Vague

Melgarejo

Guglielmi

et al. 2018

IEEE Trans. Microwave Theory Techn.

Self Cite

View full text Add to dashboard Cite

The objective of this work is to advance the stateof-the-art in the characterization of the multipactor effect in dielectric materials. The materials studied are the most commonly used dielectrics in space applications, namely, Alumina, Rexolite, Rogers RT5870, Rohacell, Teflon and Ultem 1000. In this context, a new family of coaxial waveguide components, covering the Land S-bands, with a wideband, lowpass response has been designed, and six different prototypes have been specifically optimized and manufactured. The six prototypes have then been used to simulate and measure the multipactor breakdown susceptibility charts for the six dielectric materials investigated. Finally, the simulation results are compared with the results of the measurement campaign indicating good agreement.

show abstract

Multipactor RF Breakdown in Coaxial Transmission Lines With Digitally Modulated Signals

Cited by 17 publications

References 15 publications

Study of the Multipactor Effect in Groove Gap Waveguide Technology

Study of the Multipactor Effect in Groove Gap Waveguide Technology

Experimental Study of the Multipactor Effect in a Partially Dielectric-Loaded Rectangular Waveguide

Multipactor Effect Characterization of Dielectric Materials for Space Applications

Contact Info

Product

Resources

About