Cryogenic 2-13 GHz Eleven feed for reflector antennas in future wideband radio telescopes
Artikel i vetenskaplig tidskrift, 2011

The system design of a cryogenic 2-13 GHz feed is considered with emphasis on its application in future wideband radio telescope systems. The feed is based on the so-called Eleven antenna and the design requires careful integration of various sub-designs in order to realize cryogenic operation. The various sub-designs include the electrical design of the Eleven antenna, design of the critical center puck, alternative solutions for integrating the Eleven antenna with low-noise amplifiers (LNAs), mechanical and cryogenic design and tests, and system noise temperature estimation and measurements. A great deal of simulated and measured results are presented throughout this paper, including the electrical, mechanical and cryogenic performance, and an assessment of the system noise temperature. The objective of this work is to present a good feed candidate that is well-suited for VLBI2010 and SKA radio telescopes. Further developments needed to completely fulfill the requirements for these future wideband radio telescopes are also discussed.

Författare

Jian Yang

Signaler och system, Kommunikationssystem, informationsteori och antenner, Antennsystem

Miroslav Pantaleev

Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium

Per-Simon Kildal

Signaler och system, Kommunikationssystem, informationsteori och antenner, Antennsystem

Benjamin Klein

Hartebeestoek Radio Astron. Observ.

Yogesh Karandikar

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Leif Helldner

Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium

Niklas Wadefalk

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

C. Beaudoin

MIT Haystack Observatory

IEEE Transactions on Antennas and Propagation

0018-926X (ISSN)

Vol. 59 1918-1934 5723714

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/TAP.2011.2122229