Design of an IF section for a Galactic Emission Mapping experiment.pdf

Design of an IF Section for a Galactic Emission Mapping experiment 1 2 1,4 1,3,4 1,3 5 Miguel Bergano , Luis Cupido , Domingos Barbosa , Rui Fonseca ,Dinis M. Santos , eorge Smoot 1 Instituto de Telecomunicações, Campus Universitário de Santiago, 3810- 193 Aveiro, Portugal, Phone: +351-234377900, Fax: +351-234377901, e-mail: jbergano@av.it.pt 2 Centro de Fusão Nuclear, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisbon, Portugal 3 Departamento de Electrónica, Telecomunicações e Informática, University of Aveiro, Campus Universitário de Santiago, 3810- 193 Aveiro, Portugal 4 Centro Multidisciplinar em Astrofísica, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisbon, Portugal 5 Astrophysics roup, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, 94720 Berkeley, USA Abs tract. 1- In the context of the Galactic Emission Mapping based correlator will be published elsewhere. collaboration, a galactic survey at GHz is in preparation to properly characterize the galactic foreground to the Cosmic II. RECEIVER OVERVIEW Microwave Background Radiation (CMBR). For the North sky survey, a new receiver is being developed. This GHz The receiver has a general classical heterodyne topology, heterodyne polarimeter has a high gain IF (intermediate the back-end being