The Polarized Galactic Emission Mapping Project in Portugal
An international collaboration aiming to measure galactic foregrounds
CENTRA - Centro Multidisciplinar em Astrofísica do IST
IT- Instituto de Telecomunicações (Pólo de Aveiro)
LBNL - Lawrence Berkeley National Laboratory, USA
INPE - Instituto Nacional de Pesquisas Espaciais, Brasil
IASF - Bologna - Istituto di Astrofisica Spaziale e Fisica Cosmica - Italy

               

Infrastructure support by C.M. Pampilhosa da Serra


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THE LNA for the front end stage should have a low temperature. After design at room temperature with super-low noise commercial pHEMT with GaAsIn technology (Mitsubishi and NEC), we opted for the InP HEMT based cryogenic amps from the Low Noise Factory , Sweden (Chalmers University of Technology). The LNAs have a BW of 4GHz (4-8GHz) and a Tnoise=6K @ 77K cooling (GEM criocooler), or about 3.5K Tnoise @ 10K, which are the lowest noise available LNAs. 


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Last updated: 07/25/08.