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A wide-band, active antenna system for long wavelength radio astronomy

Citation

Hicks, BC and Paravastu-Dalal, N and Stewart, KP and Erickson, WC and Ray, PS and Kassim, NE and Burns, S and Clarke, T and Schmitt, H and Craig, J and Hartman, J and Weiler, KW, A wide-band, active antenna system for long wavelength radio astronomy, Publications of the Astronomical Society of the Pacific, 124, (920) pp. 1090-1104. ISSN 0004-6280 (2012) [Refereed Article]

Copyright Statement

Copyright 2012 The Astronomical Society of the Pacific

DOI: doi:10.1086/668121

Abstract

We describe an "active" antenna system for HF/VHF (long wavelength) radio astronomy that has been successfully deployed 256-fold as the first station (LWA1) of the planned Long Wavelength Array. The antenna system, consisting of crossed dipoles, an active balun/preamp, a support structure, and a ground screen has been shown to successfully operate over at least the band from 20 MHz (15 m wavelength) to 80 MHz (3.75 m wave- length) with a noise figure that is at least 6 dB better than the Galactic background emission-noise temperature over that band. Thus, we met the goal to design and construct a compact, inexpensive, rugged, and easily assembled antenna system that can be deployed many-fold to form numerous large individual "stations" for the purpose of building a large, long wavelength synthesis array telescope for radio astronomical and ionospheric observations.

Item Details

Item Type:Refereed Article
Keywords:astronomical Instrumentation
Research Division:Physical Sciences
Research Group:Astronomical and Space Sciences
Research Field:Astronomical and Space Instrumentation
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Physical Sciences
Author:Erickson, WC (Professor William Erickson)
ID Code:83495
Year Published:2012
Web of Science® Times Cited:10
Deposited By:Mathematics and Physics
Deposited On:2013-03-15
Last Modified:2013-07-24
Downloads:0

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