Delopement of mutimode horns and wideband feed for radio telescopes

Author

Ujihara, H. ; Kimura, K. ; Matsumoto, K. ; Ogawa, H. ; Ohno, T. ; Tsuboi, M. ; Kasuga, T. ; Homma, M. ; Kawaguchi, N.

Author_Institution

Kashima Space Res. Center, Nat. Instiutute of Infomation & Commun. Technol., Kashima, Japan

fYear

2011

fDate

13-20 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

Multimode horns were developed for 8.4GHz, 22GHz, 43GHz receiver systems of ASTRO-G/VSOP-2 satellite for Space-VLBI, and for 6.7GHz of VERA 20m radio telescopes of National Astronomical Observatory in JAPAN and 25m Shanghai Radio telescope in China. Rational bandwidth of these horns in low cross polar level are 20-30%, and their thin walls without corrugation and shortened length are the best for the satellite use. Also, wideband feeds will be presented, which are now developing for SKA and VLBI2010, which is a kind of Tapered Slot Antenna or other of traveling wave antenna.

Keywords

broadband antennas; horn antennas; radiotelescopes; slot antennas; ASTRO-G/VSOP-2 satellite; China; JAPAN; National Astronomical Observatory; SKA; Shanghai Radio telescope; Space-VLBI; VERA radio telescope; VLBI 2010; frequency 22 GHz; frequency 43 GHz; frequency 6.7 GHz; frequency 8.4 GHz; low cross polar level; mutimode horn; radio telescopes; receiver system; tapered slot antenna; thin wall; traveling wave antenna; wideband feed; Feeds; Radio astronomy; Satellite broadcasting; Satellites; Slot antennas; Structural beams; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium, 2011 XXXth URSI

Conference_Location

Istanbul

Print_ISBN

978-1-4244-5117-3

Type

conf

DOI

10.1109/URSIGASS.2011.6051293

Filename

6051293