Phased array antenna design and characterization for next-generation radio telescopes

Author

Warnick, Karl F. ; Jeffs, Brian D. ; Landon, Jonathan ; Waldron, Jacob ; Jones, David ; Fisher, J. Richard ; Norrod, Roger

Author_Institution

Brigham Young Univ., Provo, UT

fYear

2009

fDate

2-4 March 2009

Firstpage

1

Lastpage

4

Abstract

Instrumentation for radio astronomical observations is currently undergoing a transition from large reflectors with single-pixel feeds to multi-pixel phased arrays. Research efforts aimed at realizing the benefits of phased arrays for highly sensitive, calibrated astronomical measurements have opened up interesting challenges for antenna designers. This paper surveys recent theoretical and experimental results on characterization of beam equivalent noise temperature and efficiency, impedance matching to minimize front end noise, and beamforming and calibration algorithms for phased array feeds.

Keywords

antenna phased arrays; calibration; impedance matching; radioastronomy; radiotelescopes; beam equivalent noise temperature; beamforming; calibration; impedance matching; phased array antenna design; phased array feeds; radio astronomical observations; radio telescopes; Antenna arrays; Antenna measurements; Extraterrestrial measurements; Feeds; Instruments; Optical design; Phase measurement; Phase noise; Phased arrays; Radio astronomy;

fLanguage

English

Publisher

ieee

Conference_Titel

Antenna Technology, 2009. iWAT 2009. IEEE International Workshop on

Conference_Location

Santa Monica, CA

Print_ISBN

978-1-4244-4395-6

Electronic_ISBN

978-1-4244-4396-3

Type

conf

DOI

10.1109/IWAT.2009.4906956

Filename

4906956