1. Polarimetric receiver in the forty gigahertz band: new instrument for the Q-U-I joint Tenerife experiment.
- Author
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Villa, Enrique, Cano, Juan L., Aja, Beatriz, Terán, J. Vicente, de la Fuente, Luisa, Mediavilla, Ángel, and Artal, Eduardo
- Subjects
ASTRONOMICAL polarimetry ,LINEAR polarization ,RADIOS ,MICROWAVE radiometry ,STOKES parameters ,ASTRONOMICAL instruments - Abstract
This paper describes the analysis, design and characterization of a polarimetric receiver developed for covering the 35 to 47 GHz frequency band in the new instrument aimed at completing the ground-based Q-U-I Joint Tenerife Experiment. This experiment is designed to measure polarization in the Cosmic Microwave Background. The described high frequency instrument is a HEMT-based array composed of 29 pixels. A thorough analysis of the behaviour of the proposed receiver, based on electronic phase switching, is presented for a noise-like linearly polarized input signal, obtaining simultaneously
I ,Q andU Stokes parameters of the input signal. Wideband subsystems are designed, assembled and characterized for the polarimeter. Their performances are described showing appropriate results within the 35-to-47 GHz frequency band. Functionality tests are performed at room and cryogenic temperatures with adequate results for both temperature conditions, which validate the receiver concept and performance. [ABSTRACT FROM AUTHOR]- Published
- 2018
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