The expanded very large array low band upgrade

Author

Clarke, Tracy E. ; Perley, Rick A. ; Kassim, Namir E. ; Hicks, Brian C. ; Owen, Frazer N. ; Durand, Steve ; Kutz, Chuck ; Pospieszalski, Marian ; Weiler, Kurt W. ; Wilson, Tom L.

Author_Institution

Remote Sensing Div., Naval Res. Lab., Washington, DC, USA

fYear

2011

fDate

13-20 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

The EVLA upgrade will enable full frequency coverage between 1 and 50 GHz. The legacy 74 and 330 MHz low frequency receivers have been largely decommissioned by compatibility issues with the new EVLA digital electronics. We describe an EVLA Low Band initiative to replace the existing narrow band receivers with a new low-noise, broadband system covering 66 to 470 MHz. The bandwidth at 74 MHz will increase by more than an order of magnitude while the 330 MHz bandwidth increases by a factor of 6. The initial deployment of the system will use the current, limited bandwidth feeds.

Keywords

radioastronomy; receivers; EVLA digital electronics; EVLA upgrade; Expanded Very Large Array low band upgrade; broadband system; frequency 1 GHz; frequency 330 MHz; frequency 50 GHz; frequency 66 MHz to 470 MHz; frequency 74 MHz; low frequency receivers; narrow band receivers; noise; Arrays; Feeds; Noise; Observatories; Radio astronomy; Radiofrequency interference; Receivers;

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.2011.6051196

Filename

6051196