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Table 1

Summary of the SEPIA ALMA Band 5 specifications and performance.

Item Specifications Comment
Technology 2SB SIS mixers, dual polarization
RF band 157.36–211.64 GHz
IF band 4–8 GHz For each sideband
IF bandwidth 4 × 4 GHz
SSB noise temperature <50 K Averaged over RF band < 45 K
Sideband rejection ratio >10 dB Averaged over IF > 16 dB
Cross-polarization <−23 dB At the cartridge RF window

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