Future expansions of the ALMA correlator are likely to follow an FX topology. This memo describes the architecture for the filterbanks that naturally lends itself to multi-resolution observing in multiple frequency bands. It is based on a cascade of polyphase filterbanks, this maximizes the signal to noise performance at the highest frequency resolution.
View a pdf version of ALMA Memo #447.
Last modified: 2003-02-28
alma-memos@nrao.edu