Noise temperature measurement of finite compact aperture array

Author

Zhang, Ye ; Brown, Anthony K.

Author_Institution

Sch. of Electr. & Electron. Eng., Univ. of Manchester, Manchester, UK

fYear

2013

fDate

9-13 Sept. 2013

Firstpage

1029

Lastpage

1031

Abstract

A dual polarized aperture array consisting of Octagonal Ring Antennas (ORA) operating in the AA-mid frequency range between 400 MHz and 1.4 GHz has been developed for the Square Kilometre Array. A finite array with the aperture size of 1m × 1m had been fabricated. The subarray elements of the finite array are connected to self-developed LNAs or commercially available LNAs. The noise temperature of the ORA antennas integrated with different LNAs can then be compared. A flexible beamforming network has been used to combine different number of active elements for the hot and cold load measurements.

Keywords

antenna arrays; aperture antennas; array signal processing; electromagnetic wave polarisation; low noise amplifiers; temperature measurement; thermal noise; AA-mid frequency; LNA; ORA antennas; active elements; cold load measurements; dual polarized aperture array; finite compact aperture array; flexible beamforming network; frequency 400 MHz to 1.4 GHz; hot load measurements; noise temperature measurement; octagonal ring antennas; square kilometre array; subarray elements; Antenna arrays; Arrays; Finite element analysis; Frequency measurement; Noise; Noise measurement; Temperature measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetics in Advanced Applications (ICEAA), 2013 International Conference on

Conference_Location

Torino

Print_ISBN

978-1-4673-5705-0

Type

conf

DOI

10.1109/ICEAA.2013.6632398

Filename

6632398