Modern Antenna Technologies Stimulated by the Arecibo Radio Telescope Upgrade Project 1984-1997
Paper i proceeding, 2016

The world's largest single-reflector radio telescope is located in Arecibo. Its Gregorian dual-reflector feed was inaugurated in 1997, representing an enormous improvement in terms of bandwidth (limited by that of a wide-angle corrugated horn) and aperture efficiency compared to using the previous line feeds of about 1% bandwidth. The inauguration was preceded by an upgrading project of more than 10 years duration, during which author of this paper was stimulated to get ideas of several other technologies that were further developed the decades thereafter. The present paper gives an overview of these technologies, and how they are related to the upgrade project: the Comhat antenna (a hat-fed reflector) originating from an initial theoretical model of the line feeds, semi-analytical reflector synthesis by ray tracing, wideband constant widebeamwidth feed for paraboloids, canonical soft and hard surfaces, and gap waveguides.

edge-diffraction

artificially soft

multireflector

reflector synthesis

line feeds

transition region theory

antennas

spherical reflector antenna

Arecibo radio telescope

soft and

surfaces

hat-fed reflector antenna

canonical surfaces

Författare

Per-Simon Kildal

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Antennsystem

M. Davis

Cornell University

2016 Ieee Antennas and Propagation Society International Symposium

1947-1491 (eISSN)

379-380

Drivkrafter

Hållbar utveckling

Ämneskategorier

Telekommunikation

Elektroteknik och elektronik

Signalbehandling

Styrkeområden

Materialvetenskap

DOI

10.1109/APS.2016.7695898

ISBN

978-1-5090-2886-3