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arXiv · 1001.5422

Experiments with calibrated digital sideband separating downconversion

Matthew A. Morgan·J. Richard Fisher
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Abstract

This article reports on the first step in a focused program to re-optimize radio astronomy receiver architecture to better take advantage of the latest advancements in commercial digital technology. Specifically, an L-Band sideband-separating downconverter has been built using a combination of careful (but ultimately very simple) analog design and digital signal processing to achieve wideband downconversion of an RFI-rich frequency spectrum to baseband in a single mixing step, with a fixed-frequency Local Oscillator and stable sideband isolation exceeding 50 dB over a 12 degree C temperature range.

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Matthew A. Morgan, J. Richard Fisher. 2010-01-29. Experiments with calibrated digital sideband separating downconversion. https://doi.org/10.1086/651525

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