title: The Thirty Gigahertz Instrument Receiver for the QUIJOTE Experiment: Preliminary Polarization Measurements and Systematic-Error Analysis.
abstract: This paper presents preliminary polarization measurements and systematic-error characterization of the Thirty Gigahertz Instrument receiver developed for the QUIJOTE experiment. The instrument has been designed to measure the polarization of Cosmic Microwave Background radiation from the sky, obtaining the Q, U, and I Stokes parameters of the incoming signal simultaneously. Two kinds of linearly polarized input signals have been used as excitations in the polarimeter measurement tests in the laboratory; these show consistent results in terms of the Stokes parameters obtained. A measurement-based systematic-error characterization technique has been used in order to determine the possible sources of instrumental errors and to assist in the polarimeter calibration process.
authors.affiliation: Instituto de Física de Cantabria (IFCA), Avda. Los Castros s/n, Santander 39005, Spain. casas@ifca.unican.es.
authors.forename: Francisco J
authors.initials: FJ
authors.lastname: Casas
authors.affiliation: Instituto de Física de Cantabria (IFCA), Avda. Los Castros s/n, Santander 39005, Spain. ortizgd@ifca.unican.es.
authors.forename: David
authors.initials: D
authors.lastname: Ortiz
authors.affiliation: Departamento Ingeniería de Comunicaciones (DICOM), Universidad de Cantabria, Plaza de la Ciencia s/n, Santander 39005, Spain. villae@unican.es.
authors.forename: Enrique
authors.initials: E
authors.lastname: Villa
authors.affiliation: Departamento Ingeniería de Comunicaciones (DICOM), Universidad de Cantabria, Plaza de la Ciencia s/n, Santander 39005, Spain. jaime.cagigas@erzia.com.
authors.forename: Juan L
authors.initials: JL
authors.lastname: Cano
authors.affiliation: Departamento Ingeniería de Comunicaciones (DICOM), Universidad de Cantabria, Plaza de la Ciencia s/n, Santander 39005, Spain. jaime.cagigas@erzia.com.
authors.forename: Jaime
authors.initials: J
authors.lastname: Cagigas
authors.affiliation: Departamento Ingeniería de Comunicaciones (DICOM), Universidad de Cantabria, Plaza de la Ciencia s/n, Santander 39005, Spain. ana.perez@erzia.com.
authors.forename: Ana R
authors.initials: AR
authors.lastname: Pérez
authors.affiliation: Departamento Ingeniería de Comunicaciones (DICOM), Universidad de Cantabria, Plaza de la Ciencia s/n, Santander 39005, Spain. beatriz.aja@unican.es.
authors.forename: Beatriz
authors.initials: B
authors.lastname: Aja
authors.affiliation: Departamento Ingeniería de Comunicaciones (DICOM), Universidad de Cantabria, Plaza de la Ciencia s/n, Santander 39005, Spain. josevicente.teran@unican.es.
authors.forename: J Vicente
authors.initials: JV
authors.lastname: Terán
authors.affiliation: Departamento Ingeniería de Comunicaciones (DICOM), Universidad de Cantabria, Plaza de la Ciencia s/n, Santander 39005, Spain. luisa.delafuente@unican.es.
authors.forename: Luisa
authors.initials: L
authors.lastname: de la Fuente
authors.affiliation: Departamento Ingeniería de Comunicaciones (DICOM), Universidad de Cantabria, Plaza de la Ciencia s/n, Santander 39005, Spain. artale@unican.es.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Artal
authors.affiliation: Instituto de Astrofísica de Canarias (IAC), Vía Láctea s/n, La Laguna 38205, Spain. rjh@iac.es.
authors.forename: Roger
authors.initials: R
authors.lastname: Hoyland
authors.affiliation: Instituto de Astrofísica de Canarias (IAC), Vía Láctea s/n, La Laguna 38205, Spain. rgs@iac.es.
authors.forename: Ricardo
authors.initials: R
authors.lastname: Génova-Santos
keywords: astronomy; cosmic microwave background; instrumentation; polarization; systematic errors