Receivers for Low-Frequency Radio Astronomy

Details Receivers for Low-Frequency Radio Astronomy Receivers for Low-Frequency Radio Astronomy

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..345..321e&link_type=abstract

From Clark Lake to the Long Wavelength Array: Bill Erickson's Radio Science ASP Conference Series, Vol. 345, Proceedings of the

Astronomy and Astrophysics

Astronomy

1

Scientific paper

The next generation of large telescopes for low-frequency radio astronomy will consist of tens of thousands of broadband antennas, each individually instrumented with receivers having large tuning range and instantaneous bandwidth. Because the number of receivers is very large, their cost must be minimized; however the receivers must be also be able to cope with the severe interference associated with these frequencies, which has the potential to complicate the design and increase cost. In this paper, we consider the receiver design problem for the Long Wavelength Array, which aims to achieve 10's of MHz of instantaneous bandwidth over a tuning range of roughly 30-90 MHz. A receiver architecture is proposed and some requirements are derived. The findings described in this paper may also be applicable to other low-frequency radio telescopes with similar design features.

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