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Multipactor in Multicarrier Systems. Theory and Prediction

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Multipactor in Multicarrier Systems. Theory and Prediction

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dc.contributor.advisor Boria Esbert, Vicente Enrique es_ES
dc.contributor.advisor Gimeno Martinez, Benito es_ES
dc.contributor.advisor Vicente Quiles, Carlos Pascual es_ES
dc.contributor.author Anza Hormigo, Sergio es_ES
dc.date.accessioned 2014-07-14T08:29:53Z
dc.date.available 2014-07-14T08:29:53Z
dc.date.created 2014-06-27T09:00:44Z es_ES
dc.date.issued 2014-07-14T08:29:50Z es_ES
dc.identifier.uri http://hdl.handle.net/10251/38761
dc.description.abstract This work presents a new theoretical framework and prediction tool for multipactor in multi-carrier systems. This is of capital importance for satellite communication applications, which demand for higher number of channels operating at high power levels. Such a tool may help to reduce, or completely avoid, the risk of having an RF breakdown in operation, with the subsequent loss of signal quality or even completely damage of the device. Currently not much is known about multipactor for multi-carrier signals. This Thesis throws light on some basic multipactor mechanisms such as the electronic discharge build-up or its connection with signal distortion. A new non-stationary multi-carrier theory, based on current statistical multipactor studies, is presented. Unlike existing ones, this theory is able, for the first time, to model both electron creation and absorption processes. It constitutes the first multipactor theory for multi-carrier signals which is able to fully characterize the electron dynamics, such as the time evolution of the electronic density, as well as creation and absorption rates. A prediction method, the quasi-stationary method, is proposed for the automatic searching of the combination of carrier phases which yields the lowest breakdown level. It is based on the non-stationary theory for singlecarrier signals together with a genetic global optimizer. The quasi-stationary prediction method returns the worst-case phase combination plus a breakdown level for arbitrary multi-carrier signals with any number of carriers. The quasi-statinary method has been assessed with experimental tests on ad-hoc Ku-band rectangular waveguide samples with different multi-carrier signals. Additionally, the results have been contrasted with the popular 20-gap-crossing rule. The quasi-stationary method yields much better prediction accuracy than the 20-gap-crossing rule. Prediction errors for both techniques have been found to be 1 dB and 4 dB, respectively. The non-stationary theory is formulated for one-dimensional parallelplate case, but in principle can be adapted to other geometries and signals, which opens a future research line for extending it to more complex applications. en_EN
dc.language Inglés es_ES
dc.publisher Universitat Politècnica de València es_ES
dc.rights Reserva de todos los derechos es_ES
dc.source Riunet es_ES
dc.subject Multipactor es_ES
dc.subject Multiportadora es_ES
dc.subject Predicción es_ES
dc.subject Filtros es_ES
dc.subject Microondas es_ES
dc.subject Alta potencia es_ES
dc.subject Descarga es_ES
dc.subject Vacío es_ES
dc.subject RF es_ES
dc.subject Plasma es_ES
dc.subject.classification TEORIA DE LA SEÑAL Y COMUNICACIONES es_ES
dc.title Multipactor in Multicarrier Systems. Theory and Prediction
dc.type Tesis doctoral es_ES
dc.identifier.doi 10.4995/Thesis/10251/38761 es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions es_ES
dc.description.bibliographicCitation Anza Hormigo, S. (2014). Multipactor in Multicarrier Systems. Theory and Prediction [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/38761 es_ES
dc.description.accrualMethod TESIS es_ES
dc.type.version info:eu-repo/semantics/acceptedVersion es_ES
dc.relation.tesis 7813 es_ES


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