Polarization Filter for Microstrip Lumped-Element Kinetic Inductance Detectors

Abstract : Polarization sensitivity is a major requirement in future cosmic microwave background studies. Even though lumped-element kinetic inductance detectors (LEKIDs) have already demonstrated a good performance in the millimeter range, the typical configuration based on linear meander inductors exhibits a cross polarization up to 30%. In this work, we propose a new configuration of LEKIDs coupled to a microstrip transmission line where the continuous ground plane has been replaced with parallel lines in order to be used as a polarizing grid. Microwave simulations and preliminary experiments show that the polarizer acts as an effective ground plane with no influence in the electromagnetic performance and that the cross polarization can be decreased to 3%.
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Communication dans un congrès
17th International Workshop on Low Temperature Detectors, Jul 2017, Kurume, Japan. J.Low.Temp.Phys., 193 (3-4), pp.157-162, 2018, 〈10.1007/s10909-018-2021-1〉
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https://hal.archives-ouvertes.fr/hal-01959964
Contributeur : Inspire Hep <>
Soumis le : mercredi 19 décembre 2018 - 10:03:26
Dernière modification le : mercredi 20 mars 2019 - 15:44:29

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A. Gomez, M. Calvo, J. Goupy, A. Bideaud, F. Lévy-Bertrand, et al.. Polarization Filter for Microstrip Lumped-Element Kinetic Inductance Detectors. 17th International Workshop on Low Temperature Detectors, Jul 2017, Kurume, Japan. J.Low.Temp.Phys., 193 (3-4), pp.157-162, 2018, 〈10.1007/s10909-018-2021-1〉. 〈hal-01959964〉

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