Analog Backend

New Analog Backend System(Beta Version)


The GMRT receiver system uses the SUPERHETERODYNE principle for processing the data. Hence cosmic signals are to be converted into suitable frequency band called Intermediate Frequency (IF). The IF serves the purpose of transmission of observed signals from antenna base to Central Electronics Building (CEB). The conversion also helps in the transmission through Fiber Optic Cable. The conversion of RF signals is done with the help of Local Oscillator (LO System) frequencies, which are generated at the antenna base using standard reference generated at CEB and transmitted frequencies. The two channels of IF band are transmitted from antenna base to CEB and are given to Base Band for further processing.

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Updated  on  June 2009