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dc.contributor.authorMallorquí Franquet, Jordi Joan
dc.contributor.authorAguasca Solé, Alberto
dc.contributor.authorCardama Aznar, Ángel
dc.contributor.authorPages, R
dc.contributor.authorHaro, J M
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationMallorqui, J.J., Aguasca, A., Cardama, A., Pages, R., Haro, J. Application of the conjugate gradient method to a self-matching network for industrial microwave heating antennas. A: IEEE Antennas and Propagation Society International Symposium '99. "APS 1999: Antennas and Propagation Society International Symposium: July 11-16, 1999". Orlando: Institute of Electrical and Electronics Engineers (IEEE), 1999, p. 978-981.
dc.description.abstractOne of the main problems regarding the efficiency in a heating industrial system using high power microwaves is related with the uncontrolled changes on the load. These changes can be caused both by the different kinds of materials to be processed in the same oven and by the temperature rise which modifies the material's physical properties, particularly its dielectric permittivity. Usually, the microwave generator is matched to the antenna feeding the oven by means of a waveguide matching system, typically a two, three or four capacitive-screw tuner empirically adjusted for a given load. Once the heating process is started, the temperature dependence of the complex permittivity usually changes the impedance seen by the generator, worsening the mismatch factor and reducing the efficiency of the heating process. A similar process happens when the load is inhomogeneous or discontinuous; it is not feasible to manually re-adjust the matching network for every different sample processed. Until now the solution has been simple but highly inefficient: to increase the incident power in order to overcome the mismatching effects.
dc.format.extent4 p.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació
dc.subject.otherMicrowave heating
dc.subject.otherMicrowave antennas
dc.subject.otherImpedance matching
dc.subject.otherConjugate gradient methods
dc.subject.otherWaveguide junctions
dc.titleApplication of the conjugate gradient method to a self-matching network for industrial microwave heating antennas
dc.typeConference report
dc.contributor.groupUniversitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció
dc.contributor.groupUniversitat Politècnica de Catalunya. ANTENNALAB - Grup d'Antenes i Sistemes Radio
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorMallorqui, J.J.; Aguasca, A.; Cardama, A.; Pages, R.; Haro, J.
local.citation.contributorIEEE Antennas and Propagation Society International Symposium '99
local.citation.publicationNameAPS 1999: Antennas and Propagation Society International Symposium: July 11-16, 1999

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