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Erschienen in:
Maxwell, J.C. Maxwell’s Original Presentation of Electromagnetic Theory and Its Evolution Kapitel lesen Erstes Kapitel lesen

2016 | OriginalPaper | Buchkapitel

Antennas in Radio Telescope Systems

verfasst von : Steven W. Ellingson

Erschienen in: Handbook of Antenna Technologies

Verlag: Springer Singapore

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Abstract

Radio astronomy is the study of the universe by measurement of radio frequency emission at frequencies ranging from a few MHz to the far infrared. Signals of interest are typically extraordinarily weak, necessitating large effective aperture and resulting in some of the world’s largest antenna systems. Technologies now commonly employed include reflector antennas (“dishes”) using horn-type feeds or feed arrays, beamforming arrays consisting of elements ranging from dipoles to large dishes, and interferometry. Many problems in radio astronomy also require very fine angular resolution, leading to aperture synthesis imaging instruments consisting of antennas distributed over apertures ranging from hundreds of meters to intercontinental distances. This chapter provides a brief review of antenna systems used in operational modern radio telescopes and in anticipated new radio telescopes.

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Vorheriges Kapitel Space Antennas Including Terahertz Antennas
Nächstes Kapitel Reconfigurable Antennas for Wireless Communications
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Metadaten
Titel
Antennas in Radio Telescope Systems
verfasst von
Steven W. Ellingson
Copyright-Jahr
2016
Verlag
Springer Singapore
Buch
Handbook of Antenna Technologies

Print ISBN: 978-981-4560-43-6

Electronic ISBN: 978-981-4560-44-3

Copyright-Jahr: 2016

DOI
https://doi.org/10.1007/978-981-4560-44-3_124

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