Microwave technology innovations in orbiting VLBI

Author

D´Addario, L.R.

Author_Institution

Nat. Radio Astron. Obs., Charlottesville, VA, USA

fYear

1992

fDate

1-5 June 1992

Firstpage

1375

Abstract

The radio astronomical technique of very long baseline interferometry (VLBI) will soon be extended beyond the Earth´s surface by placing antennas and receiving systems in high Earth orbit. Two such orbiting VLBI telescopes are expected to be in operation by 1995. The technical challenges of these projects have produced several interesting innovations in the microwave area, including designs of large, deployable antennas; designs of multifrequency feed systems; cryogenic low-noise amplifiers; and methods of precise time synchronization with ground telescopes.<>

Keywords

artificial satellites; microwave amplifiers; microwave antennas; radioastronomical techniques; radiotelescopes; radiowave interferometry; cryogenic low-noise amplifiers; deployable antennas; microwave; multifrequency feed systems; orbiting VLBI telescopes; radio astronomical technique; radiotelescopes; receiving systems; time synchronization; very long baseline interferometry; Earth; Microwave antennas; Microwave technology; Microwave theory and techniques; Optical design; Radio interferometry; Receiving antennas; Space technology; Technological innovation; Telescopes;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1992., IEEE MTT-S International

Conference_Location

Albuquerque, NM, USA

ISSN

0149-645X

Print_ISBN

0-7803-0611-2

Type

conf

DOI

10.1109/MWSYM.1992.188262

Filename

188262