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Design of an IF section for a Galactic Emission Mapping experiment | | Miguel Bergano
; Luis Cupido
; Domingos Barbosa
; Rui Fonseca
; Dinis M. Santos
; George Smoot
; | | Date: |
23 Feb 2007 | | Journal: | Proceedings of Conftele 2007, an IT and IEEE sponsored Conference,
May 2007, Peniche, Portugal | | Abstract: | In the context of the Galactic Emission Mapping collaboration, a galactic survey at 5GHz is in preparation to properly characterize the galactic foreground to the Cosmic Microwave Background Radiation (CMBR). For the North sky survey, a new receiver is being developed. This 5GHz heterodyne polarimeter has a high gain IF (intermediate frequency) chain using the latest RF technology and microstrip design that we describe in the present article. Working at 600MHz central frequency, it consists of a pre-amplifier with an integral band-pass filter followed by an amplifier with digitally controlled gain and a frequency converter to zero-IF that feeds the ADC of a four channel digital correlator (outside the scope of the present article). This paper focuses the design options and constraints and presents the simulations and experimental results of a circuit prototype. | | Source: | arXiv, astro-ph/0702629 | | Services: | Forum | Review | PDF | Favorites | |
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